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 #ifdef CONFIG_IEEE80211W
78 bss->assoc_sa_query_max_timeout = 1000;
79 bss->assoc_sa_query_retry_timeout = 201;
80 #endif /* CONFIG_IEEE80211W */
81 #ifdef EAP_SERVER_FAST
82 /* both anonymous and authenticated provisioning */
83 bss->eap_fast_prov = 3;
84 bss->pac_key_lifetime = 7 * 24 * 60 * 60;
85 bss->pac_key_refresh_time = 1 * 24 * 60 * 60;
86 #endif /* EAP_SERVER_FAST */
90 struct hostapd_config * hostapd_config_defaults(void)
92 struct hostapd_config *conf;
93 struct hostapd_bss_config *bss;
95 const int aCWmin = 4, aCWmax = 10;
96 const struct hostapd_wmm_ac_params ac_bk =
97 { aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */
98 const struct hostapd_wmm_ac_params ac_be =
99 { aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */
100 const struct hostapd_wmm_ac_params ac_vi = /* video traffic */
101 { aCWmin - 1, aCWmin, 2, 3000 / 32, 1 };
102 const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */
103 { aCWmin - 2, aCWmin - 1, 2, 1500 / 32, 1 };
105 conf = os_zalloc(sizeof(*conf));
106 bss = os_zalloc(sizeof(*bss));
107 if (conf == NULL || bss == NULL) {
108 wpa_printf(MSG_ERROR, "Failed to allocate memory for "
109 "configuration data.");
115 bss->radius = os_zalloc(sizeof(*bss->radius));
116 if (bss->radius == NULL) {
122 hostapd_config_defaults_bss(bss);
127 conf->beacon_int = 100;
128 conf->rts_threshold = -1; /* use driver default: 2347 */
129 conf->fragm_threshold = -1; /* user driver default: 2346 */
130 conf->send_probe_response = 1;
132 for (i = 0; i < NUM_TX_QUEUES; i++)
133 conf->tx_queue[i].aifs = -1; /* use hw default */
135 conf->wmm_ac_params[0] = ac_be;
136 conf->wmm_ac_params[1] = ac_bk;
137 conf->wmm_ac_params[2] = ac_vi;
138 conf->wmm_ac_params[3] = ac_vo;
140 conf->ht_capab = HT_CAP_INFO_SMPS_DISABLED;
146 int hostapd_mac_comp(const void *a, const void *b)
148 return os_memcmp(a, b, sizeof(macaddr));
152 int hostapd_mac_comp_empty(const void *a)
154 macaddr empty = { 0 };
155 return os_memcmp(a, empty, sizeof(macaddr));
159 static int hostapd_config_read_wpa_psk(const char *fname,
160 struct hostapd_ssid *ssid)
164 int line = 0, ret = 0, len, ok;
166 struct hostapd_wpa_psk *psk;
171 f = fopen(fname, "r");
173 wpa_printf(MSG_ERROR, "WPA PSK file '%s' not found.", fname);
177 while (fgets(buf, sizeof(buf), f)) {
183 while (*pos != '\0') {
193 if (hwaddr_aton(buf, addr)) {
194 wpa_printf(MSG_ERROR, "Invalid MAC address '%s' on "
195 "line %d in '%s'", buf, line, fname);
200 psk = os_zalloc(sizeof(*psk));
202 wpa_printf(MSG_ERROR, "WPA PSK allocation failed");
206 if (is_zero_ether_addr(addr))
209 os_memcpy(psk->addr, addr, ETH_ALEN);
213 wpa_printf(MSG_ERROR, "No PSK on line %d in '%s'",
222 len = os_strlen(pos);
223 if (len == 64 && hexstr2bin(pos, psk->psk, PMK_LEN) == 0)
225 else if (len >= 8 && len < 64) {
226 pbkdf2_sha1(pos, ssid->ssid, ssid->ssid_len,
227 4096, psk->psk, PMK_LEN);
231 wpa_printf(MSG_ERROR, "Invalid PSK '%s' on line %d in "
232 "'%s'", pos, line, fname);
238 psk->next = ssid->wpa_psk;
248 static int hostapd_derive_psk(struct hostapd_ssid *ssid)
250 ssid->wpa_psk = os_zalloc(sizeof(struct hostapd_wpa_psk));
251 if (ssid->wpa_psk == NULL) {
252 wpa_printf(MSG_ERROR, "Unable to alloc space for PSK");
255 wpa_hexdump_ascii(MSG_DEBUG, "SSID",
256 (u8 *) ssid->ssid, ssid->ssid_len);
257 wpa_hexdump_ascii_key(MSG_DEBUG, "PSK (ASCII passphrase)",
258 (u8 *) ssid->wpa_passphrase,
259 os_strlen(ssid->wpa_passphrase));
260 pbkdf2_sha1(ssid->wpa_passphrase,
261 ssid->ssid, ssid->ssid_len,
262 4096, ssid->wpa_psk->psk, PMK_LEN);
263 wpa_hexdump_key(MSG_DEBUG, "PSK (from passphrase)",
264 ssid->wpa_psk->psk, PMK_LEN);
269 int hostapd_setup_wpa_psk(struct hostapd_bss_config *conf)
271 struct hostapd_ssid *ssid = &conf->ssid;
273 if (ssid->wpa_passphrase != NULL) {
274 if (ssid->wpa_psk != NULL) {
275 wpa_printf(MSG_DEBUG, "Using pre-configured WPA PSK "
276 "instead of passphrase");
278 wpa_printf(MSG_DEBUG, "Deriving WPA PSK based on "
280 if (hostapd_derive_psk(ssid) < 0)
283 ssid->wpa_psk->group = 1;
286 if (ssid->wpa_psk_file) {
287 if (hostapd_config_read_wpa_psk(ssid->wpa_psk_file,
296 int hostapd_wep_key_cmp(struct hostapd_wep_keys *a, struct hostapd_wep_keys *b)
300 if (a->idx != b->idx || a->default_len != b->default_len)
302 for (i = 0; i < NUM_WEP_KEYS; i++)
303 if (a->len[i] != b->len[i] ||
304 os_memcmp(a->key[i], b->key[i], a->len[i]) != 0)
310 static void hostapd_config_free_radius(struct hostapd_radius_server *servers,
315 for (i = 0; i < num_servers; i++) {
316 os_free(servers[i].shared_secret);
322 static void hostapd_config_free_eap_user(struct hostapd_eap_user *user)
324 os_free(user->identity);
325 os_free(user->password);
330 static void hostapd_config_free_wep(struct hostapd_wep_keys *keys)
333 for (i = 0; i < NUM_WEP_KEYS; i++) {
334 os_free(keys->key[i]);
340 static void hostapd_config_free_bss(struct hostapd_bss_config *conf)
342 struct hostapd_wpa_psk *psk, *prev;
343 struct hostapd_eap_user *user, *prev_user;
348 psk = conf->ssid.wpa_psk;
355 os_free(conf->ssid.wpa_passphrase);
356 os_free(conf->ssid.wpa_psk_file);
357 hostapd_config_free_wep(&conf->ssid.wep);
358 #ifdef CONFIG_FULL_DYNAMIC_VLAN
359 os_free(conf->ssid.vlan_tagged_interface);
360 #endif /* CONFIG_FULL_DYNAMIC_VLAN */
362 user = conf->eap_user;
366 hostapd_config_free_eap_user(prev_user);
369 os_free(conf->dump_log_name);
370 os_free(conf->eap_req_id_text);
371 os_free(conf->accept_mac);
372 os_free(conf->deny_mac);
373 os_free(conf->nas_identifier);
374 hostapd_config_free_radius(conf->radius->auth_servers,
375 conf->radius->num_auth_servers);
376 hostapd_config_free_radius(conf->radius->acct_servers,
377 conf->radius->num_acct_servers);
378 os_free(conf->rsn_preauth_interfaces);
379 os_free(conf->ctrl_interface);
380 os_free(conf->ca_cert);
381 os_free(conf->server_cert);
382 os_free(conf->private_key);
383 os_free(conf->private_key_passwd);
384 os_free(conf->dh_file);
385 os_free(conf->pac_opaque_encr_key);
386 os_free(conf->eap_fast_a_id);
387 os_free(conf->eap_fast_a_id_info);
388 os_free(conf->eap_sim_db);
389 os_free(conf->radius_server_clients);
390 os_free(conf->test_socket);
391 os_free(conf->radius);
392 hostapd_config_free_vlan(conf);
393 if (conf->ssid.dyn_vlan_keys) {
394 struct hostapd_ssid *ssid = &conf->ssid;
396 for (i = 0; i <= ssid->max_dyn_vlan_keys; i++) {
397 if (ssid->dyn_vlan_keys[i] == NULL)
399 hostapd_config_free_wep(ssid->dyn_vlan_keys[i]);
400 os_free(ssid->dyn_vlan_keys[i]);
402 os_free(ssid->dyn_vlan_keys);
403 ssid->dyn_vlan_keys = NULL;
406 #ifdef CONFIG_IEEE80211R
408 struct ft_remote_r0kh *r0kh, *r0kh_prev;
409 struct ft_remote_r1kh *r1kh, *r1kh_prev;
411 r0kh = conf->r0kh_list;
412 conf->r0kh_list = NULL;
419 r1kh = conf->r1kh_list;
420 conf->r1kh_list = NULL;
427 #endif /* CONFIG_IEEE80211R */
430 os_free(conf->wps_pin_requests);
431 os_free(conf->device_name);
432 os_free(conf->manufacturer);
433 os_free(conf->model_name);
434 os_free(conf->model_number);
435 os_free(conf->serial_number);
436 os_free(conf->device_type);
437 os_free(conf->config_methods);
438 os_free(conf->ap_pin);
439 os_free(conf->extra_cred);
440 os_free(conf->ap_settings);
441 os_free(conf->upnp_iface);
442 os_free(conf->friendly_name);
443 os_free(conf->manufacturer_url);
444 os_free(conf->model_description);
445 os_free(conf->model_url);
447 #endif /* CONFIG_WPS */
452 * hostapd_config_free - Free hostapd configuration
453 * @conf: Configuration data from hostapd_config_read().
455 void hostapd_config_free(struct hostapd_config *conf)
462 for (i = 0; i < conf->num_bss; i++)
463 hostapd_config_free_bss(&conf->bss[i]);
465 os_free(conf->supported_rates);
466 os_free(conf->basic_rates);
473 * hostapd_maclist_found - Find a MAC address from a list
474 * @list: MAC address list
475 * @num_entries: Number of addresses in the list
476 * @addr: Address to search for
477 * @vlan_id: Buffer for returning VLAN ID or %NULL if not needed
478 * Returns: 1 if address is in the list or 0 if not.
480 * Perform a binary search for given MAC address from a pre-sorted list.
482 int hostapd_maclist_found(struct mac_acl_entry *list, int num_entries,
483 const u8 *addr, int *vlan_id)
485 int start, end, middle, res;
488 end = num_entries - 1;
490 while (start <= end) {
491 middle = (start + end) / 2;
492 res = os_memcmp(list[middle].addr, addr, ETH_ALEN);
495 *vlan_id = list[middle].vlan_id;
508 int hostapd_rate_found(int *list, int rate)
515 for (i = 0; list[i] >= 0; i++)
523 const char * hostapd_get_vlan_id_ifname(struct hostapd_vlan *vlan, int vlan_id)
525 struct hostapd_vlan *v = vlan;
527 if (v->vlan_id == vlan_id || v->vlan_id == VLAN_ID_WILDCARD)
535 const u8 * hostapd_get_psk(const struct hostapd_bss_config *conf,
536 const u8 *addr, const u8 *prev_psk)
538 struct hostapd_wpa_psk *psk;
539 int next_ok = prev_psk == NULL;
541 for (psk = conf->ssid.wpa_psk; psk != NULL; psk = psk->next) {
543 (psk->group || os_memcmp(psk->addr, addr, ETH_ALEN) == 0))
546 if (psk->psk == prev_psk)
554 const struct hostapd_eap_user *
555 hostapd_get_eap_user(const struct hostapd_bss_config *conf, const u8 *identity,
556 size_t identity_len, int phase2)
558 struct hostapd_eap_user *user = conf->eap_user;
561 if (conf->wps_state && identity_len == WSC_ID_ENROLLEE_LEN &&
562 os_memcmp(identity, WSC_ID_ENROLLEE, WSC_ID_ENROLLEE_LEN) == 0) {
563 static struct hostapd_eap_user wsc_enrollee;
564 os_memset(&wsc_enrollee, 0, sizeof(wsc_enrollee));
565 wsc_enrollee.methods[0].method = eap_server_get_type(
566 "WSC", &wsc_enrollee.methods[0].vendor);
567 return &wsc_enrollee;
570 if (conf->wps_state && identity_len == WSC_ID_REGISTRAR_LEN &&
571 os_memcmp(identity, WSC_ID_REGISTRAR, WSC_ID_REGISTRAR_LEN) == 0) {
572 static struct hostapd_eap_user wsc_registrar;
573 os_memset(&wsc_registrar, 0, sizeof(wsc_registrar));
574 wsc_registrar.methods[0].method = eap_server_get_type(
575 "WSC", &wsc_registrar.methods[0].vendor);
576 wsc_registrar.password = (u8 *) conf->ap_pin;
577 wsc_registrar.password_len = conf->ap_pin ?
578 os_strlen(conf->ap_pin) : 0;
579 return &wsc_registrar;
581 #endif /* CONFIG_WPS */
584 if (!phase2 && user->identity == NULL) {
589 if (user->phase2 == !!phase2 && user->wildcard_prefix &&
590 identity_len >= user->identity_len &&
591 os_memcmp(user->identity, identity, user->identity_len) ==
593 /* Wildcard prefix match */
597 if (user->phase2 == !!phase2 &&
598 user->identity_len == identity_len &&
599 os_memcmp(user->identity, identity, identity_len) == 0)