2 * hostapd / Configuration helper functions
3 * Copyright (c) 2003-2012, Jouni Malinen <j@w1.fi>
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
9 #include "utils/includes.h"
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 "eap_common/eap_wsc_common.h"
17 #include "eap_server/eap.h"
20 #include "ap_config.h"
23 static void hostapd_config_free_vlan(struct hostapd_bss_config *bss)
25 struct hostapd_vlan *vlan, *prev;
39 void hostapd_config_defaults_bss(struct hostapd_bss_config *bss)
41 bss->logger_syslog_level = HOSTAPD_LEVEL_INFO;
42 bss->logger_stdout_level = HOSTAPD_LEVEL_INFO;
43 bss->logger_syslog = (unsigned int) -1;
44 bss->logger_stdout = (unsigned int) -1;
46 bss->auth_algs = WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED;
48 bss->wep_rekeying_period = 300;
49 /* use key0 in individual key and key1 in broadcast key */
50 bss->broadcast_key_idx_min = 1;
51 bss->broadcast_key_idx_max = 2;
52 bss->eap_reauth_period = 3600;
54 bss->wpa_group_rekey = 600;
55 bss->wpa_gmk_rekey = 86400;
56 bss->wpa_key_mgmt = WPA_KEY_MGMT_PSK;
57 bss->wpa_pairwise = WPA_CIPHER_TKIP;
58 bss->wpa_group = WPA_CIPHER_TKIP;
59 bss->rsn_pairwise = 0;
61 bss->max_num_sta = MAX_STA_COUNT;
65 bss->radius_server_auth_port = 1812;
66 bss->ap_max_inactivity = AP_MAX_INACTIVITY;
67 bss->eapol_version = EAPOL_VERSION;
69 bss->max_listen_interval = 65535;
71 bss->pwd_group = 19; /* ECC: GF(p=256) */
73 #ifdef CONFIG_IEEE80211W
74 bss->assoc_sa_query_max_timeout = 1000;
75 bss->assoc_sa_query_retry_timeout = 201;
76 #endif /* CONFIG_IEEE80211W */
77 #ifdef EAP_SERVER_FAST
78 /* both anonymous and authenticated provisioning */
79 bss->eap_fast_prov = 3;
80 bss->pac_key_lifetime = 7 * 24 * 60 * 60;
81 bss->pac_key_refresh_time = 1 * 24 * 60 * 60;
82 #endif /* EAP_SERVER_FAST */
84 /* Set to -1 as defaults depends on HT in setup */
85 bss->wmm_enabled = -1;
87 #ifdef CONFIG_IEEE80211R
89 #endif /* CONFIG_IEEE80211R */
91 bss->radius_das_time_window = 300;
93 bss->sae_anti_clogging_threshold = 5;
97 struct hostapd_config * hostapd_config_defaults(void)
99 #define ecw2cw(ecw) ((1 << (ecw)) - 1)
101 struct hostapd_config *conf;
102 struct hostapd_bss_config *bss;
103 const int aCWmin = 4, aCWmax = 10;
104 const struct hostapd_wmm_ac_params ac_bk =
105 { aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */
106 const struct hostapd_wmm_ac_params ac_be =
107 { aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */
108 const struct hostapd_wmm_ac_params ac_vi = /* video traffic */
109 { aCWmin - 1, aCWmin, 2, 3000 / 32, 0 };
110 const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */
111 { aCWmin - 2, aCWmin - 1, 2, 1500 / 32, 0 };
112 const struct hostapd_tx_queue_params txq_bk =
113 { 7, ecw2cw(aCWmin), ecw2cw(aCWmax), 0 };
114 const struct hostapd_tx_queue_params txq_be =
115 { 3, ecw2cw(aCWmin), 4 * (ecw2cw(aCWmin) + 1) - 1, 0};
116 const struct hostapd_tx_queue_params txq_vi =
117 { 1, (ecw2cw(aCWmin) + 1) / 2 - 1, ecw2cw(aCWmin), 30};
118 const struct hostapd_tx_queue_params txq_vo =
119 { 1, (ecw2cw(aCWmin) + 1) / 4 - 1,
120 (ecw2cw(aCWmin) + 1) / 2 - 1, 15};
124 conf = os_zalloc(sizeof(*conf));
125 bss = os_zalloc(sizeof(*bss));
126 if (conf == NULL || bss == NULL) {
127 wpa_printf(MSG_ERROR, "Failed to allocate memory for "
128 "configuration data.");
134 bss->radius = os_zalloc(sizeof(*bss->radius));
135 if (bss->radius == NULL) {
141 hostapd_config_defaults_bss(bss);
146 conf->beacon_int = 100;
147 conf->rts_threshold = -1; /* use driver default: 2347 */
148 conf->fragm_threshold = -1; /* user driver default: 2346 */
149 conf->send_probe_response = 1;
151 conf->wmm_ac_params[0] = ac_be;
152 conf->wmm_ac_params[1] = ac_bk;
153 conf->wmm_ac_params[2] = ac_vi;
154 conf->wmm_ac_params[3] = ac_vo;
156 conf->tx_queue[0] = txq_vo;
157 conf->tx_queue[1] = txq_vi;
158 conf->tx_queue[2] = txq_be;
159 conf->tx_queue[3] = txq_bk;
161 conf->ht_capab = HT_CAP_INFO_SMPS_DISABLED;
163 conf->ap_table_max_size = 255;
164 conf->ap_table_expiration_time = 60;
166 #ifdef CONFIG_TESTING_OPTIONS
167 conf->ignore_probe_probability = 0.0d;
168 conf->ignore_auth_probability = 0.0d;
169 conf->ignore_assoc_probability = 0.0d;
170 conf->ignore_reassoc_probability = 0.0d;
171 conf->corrupt_gtk_rekey_mic_probability = 0.0d;
172 #endif /* CONFIG_TESTING_OPTIONS */
178 int hostapd_mac_comp(const void *a, const void *b)
180 return os_memcmp(a, b, sizeof(macaddr));
184 int hostapd_mac_comp_empty(const void *a)
186 macaddr empty = { 0 };
187 return os_memcmp(a, empty, sizeof(macaddr));
191 static int hostapd_config_read_wpa_psk(const char *fname,
192 struct hostapd_ssid *ssid)
196 int line = 0, ret = 0, len, ok;
198 struct hostapd_wpa_psk *psk;
203 f = fopen(fname, "r");
205 wpa_printf(MSG_ERROR, "WPA PSK file '%s' not found.", fname);
209 while (fgets(buf, sizeof(buf), f)) {
215 while (*pos != '\0') {
225 if (hwaddr_aton(buf, addr)) {
226 wpa_printf(MSG_ERROR, "Invalid MAC address '%s' on "
227 "line %d in '%s'", buf, line, fname);
232 psk = os_zalloc(sizeof(*psk));
234 wpa_printf(MSG_ERROR, "WPA PSK allocation failed");
238 if (is_zero_ether_addr(addr))
241 os_memcpy(psk->addr, addr, ETH_ALEN);
245 wpa_printf(MSG_ERROR, "No PSK on line %d in '%s'",
254 len = os_strlen(pos);
255 if (len == 64 && hexstr2bin(pos, psk->psk, PMK_LEN) == 0)
257 else if (len >= 8 && len < 64) {
258 pbkdf2_sha1(pos, ssid->ssid, ssid->ssid_len,
259 4096, psk->psk, PMK_LEN);
263 wpa_printf(MSG_ERROR, "Invalid PSK '%s' on line %d in "
264 "'%s'", pos, line, fname);
270 psk->next = ssid->wpa_psk;
280 static int hostapd_derive_psk(struct hostapd_ssid *ssid)
282 ssid->wpa_psk = os_zalloc(sizeof(struct hostapd_wpa_psk));
283 if (ssid->wpa_psk == NULL) {
284 wpa_printf(MSG_ERROR, "Unable to alloc space for PSK");
287 wpa_hexdump_ascii(MSG_DEBUG, "SSID",
288 (u8 *) ssid->ssid, ssid->ssid_len);
289 wpa_hexdump_ascii_key(MSG_DEBUG, "PSK (ASCII passphrase)",
290 (u8 *) ssid->wpa_passphrase,
291 os_strlen(ssid->wpa_passphrase));
292 pbkdf2_sha1(ssid->wpa_passphrase,
293 ssid->ssid, ssid->ssid_len,
294 4096, ssid->wpa_psk->psk, PMK_LEN);
295 wpa_hexdump_key(MSG_DEBUG, "PSK (from passphrase)",
296 ssid->wpa_psk->psk, PMK_LEN);
301 int hostapd_setup_wpa_psk(struct hostapd_bss_config *conf)
303 struct hostapd_ssid *ssid = &conf->ssid;
305 if (ssid->wpa_passphrase != NULL) {
306 if (ssid->wpa_psk != NULL) {
307 wpa_printf(MSG_DEBUG, "Using pre-configured WPA PSK "
308 "instead of passphrase");
310 wpa_printf(MSG_DEBUG, "Deriving WPA PSK based on "
312 if (hostapd_derive_psk(ssid) < 0)
315 ssid->wpa_psk->group = 1;
318 if (ssid->wpa_psk_file) {
319 if (hostapd_config_read_wpa_psk(ssid->wpa_psk_file,
328 int hostapd_wep_key_cmp(struct hostapd_wep_keys *a, struct hostapd_wep_keys *b)
332 if (a->idx != b->idx || a->default_len != b->default_len)
334 for (i = 0; i < NUM_WEP_KEYS; i++)
335 if (a->len[i] != b->len[i] ||
336 os_memcmp(a->key[i], b->key[i], a->len[i]) != 0)
342 static void hostapd_config_free_radius(struct hostapd_radius_server *servers,
347 for (i = 0; i < num_servers; i++) {
348 os_free(servers[i].shared_secret);
354 struct hostapd_radius_attr *
355 hostapd_config_get_radius_attr(struct hostapd_radius_attr *attr, u8 type)
357 for (; attr; attr = attr->next) {
358 if (attr->type == type)
365 static void hostapd_config_free_radius_attr(struct hostapd_radius_attr *attr)
367 struct hostapd_radius_attr *prev;
372 wpabuf_free(prev->val);
378 static void hostapd_config_free_eap_user(struct hostapd_eap_user *user)
380 os_free(user->identity);
381 os_free(user->password);
386 static void hostapd_config_free_wep(struct hostapd_wep_keys *keys)
389 for (i = 0; i < NUM_WEP_KEYS; i++) {
390 os_free(keys->key[i]);
396 static void hostapd_config_free_bss(struct hostapd_bss_config *conf)
398 struct hostapd_wpa_psk *psk, *prev;
399 struct hostapd_eap_user *user, *prev_user;
404 psk = conf->ssid.wpa_psk;
411 os_free(conf->ssid.wpa_passphrase);
412 os_free(conf->ssid.wpa_psk_file);
413 hostapd_config_free_wep(&conf->ssid.wep);
414 #ifdef CONFIG_FULL_DYNAMIC_VLAN
415 os_free(conf->ssid.vlan_tagged_interface);
416 #endif /* CONFIG_FULL_DYNAMIC_VLAN */
418 user = conf->eap_user;
422 hostapd_config_free_eap_user(prev_user);
424 os_free(conf->eap_user_sqlite);
426 os_free(conf->dump_log_name);
427 os_free(conf->eap_req_id_text);
428 os_free(conf->accept_mac);
429 os_free(conf->deny_mac);
430 os_free(conf->nas_identifier);
431 hostapd_config_free_radius(conf->radius->auth_servers,
432 conf->radius->num_auth_servers);
433 hostapd_config_free_radius(conf->radius->acct_servers,
434 conf->radius->num_acct_servers);
435 hostapd_config_free_radius_attr(conf->radius_auth_req_attr);
436 hostapd_config_free_radius_attr(conf->radius_acct_req_attr);
437 os_free(conf->rsn_preauth_interfaces);
438 os_free(conf->ctrl_interface);
439 os_free(conf->ca_cert);
440 os_free(conf->server_cert);
441 os_free(conf->private_key);
442 os_free(conf->private_key_passwd);
443 os_free(conf->ocsp_stapling_response);
444 os_free(conf->dh_file);
445 os_free(conf->pac_opaque_encr_key);
446 os_free(conf->eap_fast_a_id);
447 os_free(conf->eap_fast_a_id_info);
448 os_free(conf->eap_sim_db);
449 os_free(conf->radius_server_clients);
450 os_free(conf->test_socket);
451 os_free(conf->radius);
452 os_free(conf->radius_das_shared_secret);
453 hostapd_config_free_vlan(conf);
454 os_free(conf->time_zone);
456 #ifdef CONFIG_IEEE80211R
458 struct ft_remote_r0kh *r0kh, *r0kh_prev;
459 struct ft_remote_r1kh *r1kh, *r1kh_prev;
461 r0kh = conf->r0kh_list;
462 conf->r0kh_list = NULL;
469 r1kh = conf->r1kh_list;
470 conf->r1kh_list = NULL;
477 #endif /* CONFIG_IEEE80211R */
480 os_free(conf->wps_pin_requests);
481 os_free(conf->device_name);
482 os_free(conf->manufacturer);
483 os_free(conf->model_name);
484 os_free(conf->model_number);
485 os_free(conf->serial_number);
486 os_free(conf->config_methods);
487 os_free(conf->ap_pin);
488 os_free(conf->extra_cred);
489 os_free(conf->ap_settings);
490 os_free(conf->upnp_iface);
491 os_free(conf->friendly_name);
492 os_free(conf->manufacturer_url);
493 os_free(conf->model_description);
494 os_free(conf->model_url);
496 wpabuf_free(conf->wps_nfc_dh_pubkey);
497 wpabuf_free(conf->wps_nfc_dh_privkey);
498 wpabuf_free(conf->wps_nfc_dev_pw);
499 #endif /* CONFIG_WPS */
501 os_free(conf->roaming_consortium);
502 os_free(conf->venue_name);
503 os_free(conf->nai_realm_data);
504 os_free(conf->network_auth_type);
505 os_free(conf->anqp_3gpp_cell_net);
506 os_free(conf->domain_name);
508 #ifdef CONFIG_RADIUS_TEST
509 os_free(conf->dump_msk_file);
510 #endif /* CONFIG_RADIUS_TEST */
513 os_free(conf->hs20_oper_friendly_name);
514 os_free(conf->hs20_wan_metrics);
515 os_free(conf->hs20_connection_capability);
516 os_free(conf->hs20_operating_class);
517 #endif /* CONFIG_HS20 */
519 wpabuf_free(conf->vendor_elements);
521 os_free(conf->sae_groups);
523 os_free(conf->server_id);
528 * hostapd_config_free - Free hostapd configuration
529 * @conf: Configuration data from hostapd_config_read().
531 void hostapd_config_free(struct hostapd_config *conf)
538 for (i = 0; i < conf->num_bss; i++)
539 hostapd_config_free_bss(&conf->bss[i]);
541 os_free(conf->supported_rates);
542 os_free(conf->basic_rates);
549 * hostapd_maclist_found - Find a MAC address from a list
550 * @list: MAC address list
551 * @num_entries: Number of addresses in the list
552 * @addr: Address to search for
553 * @vlan_id: Buffer for returning VLAN ID or %NULL if not needed
554 * Returns: 1 if address is in the list or 0 if not.
556 * Perform a binary search for given MAC address from a pre-sorted list.
558 int hostapd_maclist_found(struct mac_acl_entry *list, int num_entries,
559 const u8 *addr, int *vlan_id)
561 int start, end, middle, res;
564 end = num_entries - 1;
566 while (start <= end) {
567 middle = (start + end) / 2;
568 res = os_memcmp(list[middle].addr, addr, ETH_ALEN);
571 *vlan_id = list[middle].vlan_id;
584 int hostapd_rate_found(int *list, int rate)
591 for (i = 0; list[i] >= 0; i++)
599 int hostapd_vlan_id_valid(struct hostapd_vlan *vlan, int vlan_id)
601 struct hostapd_vlan *v = vlan;
603 if (v->vlan_id == vlan_id || v->vlan_id == VLAN_ID_WILDCARD)
611 const char * hostapd_get_vlan_id_ifname(struct hostapd_vlan *vlan, int vlan_id)
613 struct hostapd_vlan *v = vlan;
615 if (v->vlan_id == vlan_id)
623 const u8 * hostapd_get_psk(const struct hostapd_bss_config *conf,
624 const u8 *addr, const u8 *prev_psk)
626 struct hostapd_wpa_psk *psk;
627 int next_ok = prev_psk == NULL;
629 for (psk = conf->ssid.wpa_psk; psk != NULL; psk = psk->next) {
631 (psk->group || os_memcmp(psk->addr, addr, ETH_ALEN) == 0))
634 if (psk->psk == prev_psk)