2 * hostapd / Configuration helper functions
3 * Copyright (c) 2003-2009, Jouni Malinen <j@w1.fi>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
9 * Alternatively, this software may be distributed under the terms of BSD
12 * See README and COPYING for more details.
15 #include "utils/includes.h"
17 #include "utils/common.h"
18 #include "crypto/sha1.h"
19 #include "radius/radius_client.h"
20 #include "common/ieee802_11_defs.h"
21 #include "common/eapol_common.h"
22 #include "eap_common/eap_wsc_common.h"
23 #include "eap_server/eap.h"
26 #include "ap_config.h"
29 static void hostapd_config_free_vlan(struct hostapd_bss_config *bss)
31 struct hostapd_vlan *vlan, *prev;
45 void hostapd_config_defaults_bss(struct hostapd_bss_config *bss)
47 bss->logger_syslog_level = HOSTAPD_LEVEL_INFO;
48 bss->logger_stdout_level = HOSTAPD_LEVEL_INFO;
49 bss->logger_syslog = (unsigned int) -1;
50 bss->logger_stdout = (unsigned int) -1;
52 bss->auth_algs = WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED;
54 bss->wep_rekeying_period = 300;
55 /* use key0 in individual key and key1 in broadcast key */
56 bss->broadcast_key_idx_min = 1;
57 bss->broadcast_key_idx_max = 2;
58 bss->eap_reauth_period = 3600;
60 bss->wpa_group_rekey = 600;
61 bss->wpa_gmk_rekey = 86400;
62 bss->wpa_key_mgmt = WPA_KEY_MGMT_PSK;
63 bss->wpa_pairwise = WPA_CIPHER_TKIP;
64 bss->wpa_group = WPA_CIPHER_TKIP;
65 bss->rsn_pairwise = 0;
67 bss->max_num_sta = MAX_STA_COUNT;
71 bss->radius_server_auth_port = 1812;
72 bss->ap_max_inactivity = AP_MAX_INACTIVITY;
73 bss->eapol_version = EAPOL_VERSION;
75 bss->max_listen_interval = 65535;
77 bss->pwd_group = 19; /* ECC: GF(p=256) */
79 #ifdef CONFIG_IEEE80211W
80 bss->assoc_sa_query_max_timeout = 1000;
81 bss->assoc_sa_query_retry_timeout = 201;
82 #endif /* CONFIG_IEEE80211W */
83 #ifdef EAP_SERVER_FAST
84 /* both anonymous and authenticated provisioning */
85 bss->eap_fast_prov = 3;
86 bss->pac_key_lifetime = 7 * 24 * 60 * 60;
87 bss->pac_key_refresh_time = 1 * 24 * 60 * 60;
88 #endif /* EAP_SERVER_FAST */
92 struct hostapd_config * hostapd_config_defaults(void)
94 struct hostapd_config *conf;
95 struct hostapd_bss_config *bss;
97 const int aCWmin = 4, aCWmax = 10;
98 const struct hostapd_wmm_ac_params ac_bk =
99 { aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */
100 const struct hostapd_wmm_ac_params ac_be =
101 { aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */
102 const struct hostapd_wmm_ac_params ac_vi = /* video traffic */
103 { aCWmin - 1, aCWmin, 2, 3000 / 32, 1 };
104 const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */
105 { aCWmin - 2, aCWmin - 1, 2, 1500 / 32, 1 };
107 conf = os_zalloc(sizeof(*conf));
108 bss = os_zalloc(sizeof(*bss));
109 if (conf == NULL || bss == NULL) {
110 wpa_printf(MSG_ERROR, "Failed to allocate memory for "
111 "configuration data.");
117 bss->radius = os_zalloc(sizeof(*bss->radius));
118 if (bss->radius == NULL) {
124 hostapd_config_defaults_bss(bss);
129 conf->beacon_int = 100;
130 conf->rts_threshold = -1; /* use driver default: 2347 */
131 conf->fragm_threshold = -1; /* user driver default: 2346 */
132 conf->send_probe_response = 1;
134 for (i = 0; i < NUM_TX_QUEUES; i++)
135 conf->tx_queue[i].aifs = -1; /* use hw default */
137 conf->wmm_ac_params[0] = ac_be;
138 conf->wmm_ac_params[1] = ac_bk;
139 conf->wmm_ac_params[2] = ac_vi;
140 conf->wmm_ac_params[3] = ac_vo;
142 conf->ht_capab = HT_CAP_INFO_SMPS_DISABLED;
148 int hostapd_mac_comp(const void *a, const void *b)
150 return os_memcmp(a, b, sizeof(macaddr));
154 int hostapd_mac_comp_empty(const void *a)
156 macaddr empty = { 0 };
157 return os_memcmp(a, empty, sizeof(macaddr));
161 static int hostapd_config_read_wpa_psk(const char *fname,
162 struct hostapd_ssid *ssid)
166 int line = 0, ret = 0, len, ok;
168 struct hostapd_wpa_psk *psk;
173 f = fopen(fname, "r");
175 wpa_printf(MSG_ERROR, "WPA PSK file '%s' not found.", fname);
179 while (fgets(buf, sizeof(buf), f)) {
185 while (*pos != '\0') {
195 if (hwaddr_aton(buf, addr)) {
196 wpa_printf(MSG_ERROR, "Invalid MAC address '%s' on "
197 "line %d in '%s'", buf, line, fname);
202 psk = os_zalloc(sizeof(*psk));
204 wpa_printf(MSG_ERROR, "WPA PSK allocation failed");
208 if (is_zero_ether_addr(addr))
211 os_memcpy(psk->addr, addr, ETH_ALEN);
215 wpa_printf(MSG_ERROR, "No PSK on line %d in '%s'",
224 len = os_strlen(pos);
225 if (len == 64 && hexstr2bin(pos, psk->psk, PMK_LEN) == 0)
227 else if (len >= 8 && len < 64) {
228 pbkdf2_sha1(pos, ssid->ssid, ssid->ssid_len,
229 4096, psk->psk, PMK_LEN);
233 wpa_printf(MSG_ERROR, "Invalid PSK '%s' on line %d in "
234 "'%s'", pos, line, fname);
240 psk->next = ssid->wpa_psk;
250 static int hostapd_derive_psk(struct hostapd_ssid *ssid)
252 ssid->wpa_psk = os_zalloc(sizeof(struct hostapd_wpa_psk));
253 if (ssid->wpa_psk == NULL) {
254 wpa_printf(MSG_ERROR, "Unable to alloc space for PSK");
257 wpa_hexdump_ascii(MSG_DEBUG, "SSID",
258 (u8 *) ssid->ssid, ssid->ssid_len);
259 wpa_hexdump_ascii_key(MSG_DEBUG, "PSK (ASCII passphrase)",
260 (u8 *) ssid->wpa_passphrase,
261 os_strlen(ssid->wpa_passphrase));
262 pbkdf2_sha1(ssid->wpa_passphrase,
263 ssid->ssid, ssid->ssid_len,
264 4096, ssid->wpa_psk->psk, PMK_LEN);
265 wpa_hexdump_key(MSG_DEBUG, "PSK (from passphrase)",
266 ssid->wpa_psk->psk, PMK_LEN);
271 int hostapd_setup_wpa_psk(struct hostapd_bss_config *conf)
273 struct hostapd_ssid *ssid = &conf->ssid;
275 if (ssid->wpa_passphrase != NULL) {
276 if (ssid->wpa_psk != NULL) {
277 wpa_printf(MSG_DEBUG, "Using pre-configured WPA PSK "
278 "instead of passphrase");
280 wpa_printf(MSG_DEBUG, "Deriving WPA PSK based on "
282 if (hostapd_derive_psk(ssid) < 0)
285 ssid->wpa_psk->group = 1;
288 if (ssid->wpa_psk_file) {
289 if (hostapd_config_read_wpa_psk(ssid->wpa_psk_file,
298 int hostapd_wep_key_cmp(struct hostapd_wep_keys *a, struct hostapd_wep_keys *b)
302 if (a->idx != b->idx || a->default_len != b->default_len)
304 for (i = 0; i < NUM_WEP_KEYS; i++)
305 if (a->len[i] != b->len[i] ||
306 os_memcmp(a->key[i], b->key[i], a->len[i]) != 0)
312 static void hostapd_config_free_radius(struct hostapd_radius_server *servers,
317 for (i = 0; i < num_servers; i++) {
318 os_free(servers[i].shared_secret);
324 static void hostapd_config_free_eap_user(struct hostapd_eap_user *user)
326 os_free(user->identity);
327 os_free(user->password);
332 static void hostapd_config_free_wep(struct hostapd_wep_keys *keys)
335 for (i = 0; i < NUM_WEP_KEYS; i++) {
336 os_free(keys->key[i]);
342 static void hostapd_config_free_bss(struct hostapd_bss_config *conf)
344 struct hostapd_wpa_psk *psk, *prev;
345 struct hostapd_eap_user *user, *prev_user;
350 psk = conf->ssid.wpa_psk;
357 os_free(conf->ssid.wpa_passphrase);
358 os_free(conf->ssid.wpa_psk_file);
359 hostapd_config_free_wep(&conf->ssid.wep);
360 #ifdef CONFIG_FULL_DYNAMIC_VLAN
361 os_free(conf->ssid.vlan_tagged_interface);
362 #endif /* CONFIG_FULL_DYNAMIC_VLAN */
364 user = conf->eap_user;
368 hostapd_config_free_eap_user(prev_user);
371 os_free(conf->dump_log_name);
372 os_free(conf->eap_req_id_text);
373 os_free(conf->accept_mac);
374 os_free(conf->deny_mac);
375 os_free(conf->nas_identifier);
376 hostapd_config_free_radius(conf->radius->auth_servers,
377 conf->radius->num_auth_servers);
378 hostapd_config_free_radius(conf->radius->acct_servers,
379 conf->radius->num_acct_servers);
380 os_free(conf->rsn_preauth_interfaces);
381 os_free(conf->ctrl_interface);
382 os_free(conf->ca_cert);
383 os_free(conf->server_cert);
384 os_free(conf->private_key);
385 os_free(conf->private_key_passwd);
386 os_free(conf->dh_file);
387 os_free(conf->pac_opaque_encr_key);
388 os_free(conf->eap_fast_a_id);
389 os_free(conf->eap_fast_a_id_info);
390 os_free(conf->eap_sim_db);
391 os_free(conf->radius_server_clients);
392 os_free(conf->test_socket);
393 os_free(conf->radius);
394 hostapd_config_free_vlan(conf);
395 if (conf->ssid.dyn_vlan_keys) {
396 struct hostapd_ssid *ssid = &conf->ssid;
398 for (i = 0; i <= ssid->max_dyn_vlan_keys; i++) {
399 if (ssid->dyn_vlan_keys[i] == NULL)
401 hostapd_config_free_wep(ssid->dyn_vlan_keys[i]);
402 os_free(ssid->dyn_vlan_keys[i]);
404 os_free(ssid->dyn_vlan_keys);
405 ssid->dyn_vlan_keys = NULL;
408 #ifdef CONFIG_IEEE80211R
410 struct ft_remote_r0kh *r0kh, *r0kh_prev;
411 struct ft_remote_r1kh *r1kh, *r1kh_prev;
413 r0kh = conf->r0kh_list;
414 conf->r0kh_list = NULL;
421 r1kh = conf->r1kh_list;
422 conf->r1kh_list = NULL;
429 #endif /* CONFIG_IEEE80211R */
432 os_free(conf->wps_pin_requests);
433 os_free(conf->device_name);
434 os_free(conf->manufacturer);
435 os_free(conf->model_name);
436 os_free(conf->model_number);
437 os_free(conf->serial_number);
438 os_free(conf->device_type);
439 os_free(conf->config_methods);
440 os_free(conf->ap_pin);
441 os_free(conf->extra_cred);
442 os_free(conf->ap_settings);
443 os_free(conf->upnp_iface);
444 os_free(conf->friendly_name);
445 os_free(conf->manufacturer_url);
446 os_free(conf->model_description);
447 os_free(conf->model_url);
449 #endif /* CONFIG_WPS */
454 * hostapd_config_free - Free hostapd configuration
455 * @conf: Configuration data from hostapd_config_read().
457 void hostapd_config_free(struct hostapd_config *conf)
464 for (i = 0; i < conf->num_bss; i++)
465 hostapd_config_free_bss(&conf->bss[i]);
467 os_free(conf->supported_rates);
468 os_free(conf->basic_rates);
475 * hostapd_maclist_found - Find a MAC address from a list
476 * @list: MAC address list
477 * @num_entries: Number of addresses in the list
478 * @addr: Address to search for
479 * @vlan_id: Buffer for returning VLAN ID or %NULL if not needed
480 * Returns: 1 if address is in the list or 0 if not.
482 * Perform a binary search for given MAC address from a pre-sorted list.
484 int hostapd_maclist_found(struct mac_acl_entry *list, int num_entries,
485 const u8 *addr, int *vlan_id)
487 int start, end, middle, res;
490 end = num_entries - 1;
492 while (start <= end) {
493 middle = (start + end) / 2;
494 res = os_memcmp(list[middle].addr, addr, ETH_ALEN);
497 *vlan_id = list[middle].vlan_id;
510 int hostapd_rate_found(int *list, int rate)
517 for (i = 0; list[i] >= 0; i++)
525 const char * hostapd_get_vlan_id_ifname(struct hostapd_vlan *vlan, int vlan_id)
527 struct hostapd_vlan *v = vlan;
529 if (v->vlan_id == vlan_id || v->vlan_id == VLAN_ID_WILDCARD)
537 const u8 * hostapd_get_psk(const struct hostapd_bss_config *conf,
538 const u8 *addr, const u8 *prev_psk)
540 struct hostapd_wpa_psk *psk;
541 int next_ok = prev_psk == NULL;
543 for (psk = conf->ssid.wpa_psk; psk != NULL; psk = psk->next) {
545 (psk->group || os_memcmp(psk->addr, addr, ETH_ALEN) == 0))
548 if (psk->psk == prev_psk)
556 const struct hostapd_eap_user *
557 hostapd_get_eap_user(const struct hostapd_bss_config *conf, const u8 *identity,
558 size_t identity_len, int phase2)
560 struct hostapd_eap_user *user = conf->eap_user;
563 if (conf->wps_state && identity_len == WSC_ID_ENROLLEE_LEN &&
564 os_memcmp(identity, WSC_ID_ENROLLEE, WSC_ID_ENROLLEE_LEN) == 0) {
565 static struct hostapd_eap_user wsc_enrollee;
566 os_memset(&wsc_enrollee, 0, sizeof(wsc_enrollee));
567 wsc_enrollee.methods[0].method = eap_server_get_type(
568 "WSC", &wsc_enrollee.methods[0].vendor);
569 return &wsc_enrollee;
572 if (conf->wps_state && identity_len == WSC_ID_REGISTRAR_LEN &&
573 os_memcmp(identity, WSC_ID_REGISTRAR, WSC_ID_REGISTRAR_LEN) == 0) {
574 static struct hostapd_eap_user wsc_registrar;
575 os_memset(&wsc_registrar, 0, sizeof(wsc_registrar));
576 wsc_registrar.methods[0].method = eap_server_get_type(
577 "WSC", &wsc_registrar.methods[0].vendor);
578 wsc_registrar.password = (u8 *) conf->ap_pin;
579 wsc_registrar.password_len = conf->ap_pin ?
580 os_strlen(conf->ap_pin) : 0;
581 return &wsc_registrar;
583 #endif /* CONFIG_WPS */
586 if (!phase2 && user->identity == NULL) {
591 if (user->phase2 == !!phase2 && user->wildcard_prefix &&
592 identity_len >= user->identity_len &&
593 os_memcmp(user->identity, identity, user->identity_len) ==
595 /* Wildcard prefix match */
599 if (user->phase2 == !!phase2 &&
600 user->identity_len == identity_len &&
601 os_memcmp(user->identity, identity, identity_len) == 0)