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;
95 struct hostapd_config
* hostapd_config_defaults(void)
97 #define ecw2cw(ecw) ((1 << (ecw)) - 1)
99 struct hostapd_config
*conf
;
100 struct hostapd_bss_config
*bss
;
101 const int aCWmin
= 4, aCWmax
= 10;
102 const struct hostapd_wmm_ac_params ac_bk
=
103 { aCWmin
, aCWmax
, 7, 0, 0 }; /* background traffic */
104 const struct hostapd_wmm_ac_params ac_be
=
105 { aCWmin
, aCWmax
, 3, 0, 0 }; /* best effort traffic */
106 const struct hostapd_wmm_ac_params ac_vi
= /* video traffic */
107 { aCWmin
- 1, aCWmin
, 2, 3000 / 32, 0 };
108 const struct hostapd_wmm_ac_params ac_vo
= /* voice traffic */
109 { aCWmin
- 2, aCWmin
- 1, 2, 1500 / 32, 0 };
110 const struct hostapd_tx_queue_params txq_bk
=
111 { 7, ecw2cw(aCWmin
), ecw2cw(aCWmax
), 0 };
112 const struct hostapd_tx_queue_params txq_be
=
113 { 3, ecw2cw(aCWmin
), 4 * (ecw2cw(aCWmin
) + 1) - 1, 0};
114 const struct hostapd_tx_queue_params txq_vi
=
115 { 1, (ecw2cw(aCWmin
) + 1) / 2 - 1, ecw2cw(aCWmin
), 30};
116 const struct hostapd_tx_queue_params txq_vo
=
117 { 1, (ecw2cw(aCWmin
) + 1) / 4 - 1,
118 (ecw2cw(aCWmin
) + 1) / 2 - 1, 15};
122 conf
= os_zalloc(sizeof(*conf
));
123 bss
= os_zalloc(sizeof(*bss
));
124 if (conf
== NULL
|| bss
== NULL
) {
125 wpa_printf(MSG_ERROR
, "Failed to allocate memory for "
126 "configuration data.");
132 bss
->radius
= os_zalloc(sizeof(*bss
->radius
));
133 if (bss
->radius
== NULL
) {
139 hostapd_config_defaults_bss(bss
);
144 conf
->beacon_int
= 100;
145 conf
->rts_threshold
= -1; /* use driver default: 2347 */
146 conf
->fragm_threshold
= -1; /* user driver default: 2346 */
147 conf
->send_probe_response
= 1;
149 conf
->wmm_ac_params
[0] = ac_be
;
150 conf
->wmm_ac_params
[1] = ac_bk
;
151 conf
->wmm_ac_params
[2] = ac_vi
;
152 conf
->wmm_ac_params
[3] = ac_vo
;
154 conf
->tx_queue
[0] = txq_vo
;
155 conf
->tx_queue
[1] = txq_vi
;
156 conf
->tx_queue
[2] = txq_be
;
157 conf
->tx_queue
[3] = txq_bk
;
159 conf
->ht_capab
= HT_CAP_INFO_SMPS_DISABLED
;
165 int hostapd_mac_comp(const void *a
, const void *b
)
167 return os_memcmp(a
, b
, sizeof(macaddr
));
171 int hostapd_mac_comp_empty(const void *a
)
173 macaddr empty
= { 0 };
174 return os_memcmp(a
, empty
, sizeof(macaddr
));
178 static int hostapd_config_read_wpa_psk(const char *fname
,
179 struct hostapd_ssid
*ssid
)
183 int line
= 0, ret
= 0, len
, ok
;
185 struct hostapd_wpa_psk
*psk
;
190 f
= fopen(fname
, "r");
192 wpa_printf(MSG_ERROR
, "WPA PSK file '%s' not found.", fname
);
196 while (fgets(buf
, sizeof(buf
), f
)) {
202 while (*pos
!= '\0') {
212 if (hwaddr_aton(buf
, addr
)) {
213 wpa_printf(MSG_ERROR
, "Invalid MAC address '%s' on "
214 "line %d in '%s'", buf
, line
, fname
);
219 psk
= os_zalloc(sizeof(*psk
));
221 wpa_printf(MSG_ERROR
, "WPA PSK allocation failed");
225 if (is_zero_ether_addr(addr
))
228 os_memcpy(psk
->addr
, addr
, ETH_ALEN
);
232 wpa_printf(MSG_ERROR
, "No PSK on line %d in '%s'",
241 len
= os_strlen(pos
);
242 if (len
== 64 && hexstr2bin(pos
, psk
->psk
, PMK_LEN
) == 0)
244 else if (len
>= 8 && len
< 64) {
245 pbkdf2_sha1(pos
, ssid
->ssid
, ssid
->ssid_len
,
246 4096, psk
->psk
, PMK_LEN
);
250 wpa_printf(MSG_ERROR
, "Invalid PSK '%s' on line %d in "
251 "'%s'", pos
, line
, fname
);
257 psk
->next
= ssid
->wpa_psk
;
267 static int hostapd_derive_psk(struct hostapd_ssid
*ssid
)
269 ssid
->wpa_psk
= os_zalloc(sizeof(struct hostapd_wpa_psk
));
270 if (ssid
->wpa_psk
== NULL
) {
271 wpa_printf(MSG_ERROR
, "Unable to alloc space for PSK");
274 wpa_hexdump_ascii(MSG_DEBUG
, "SSID",
275 (u8
*) ssid
->ssid
, ssid
->ssid_len
);
276 wpa_hexdump_ascii_key(MSG_DEBUG
, "PSK (ASCII passphrase)",
277 (u8
*) ssid
->wpa_passphrase
,
278 os_strlen(ssid
->wpa_passphrase
));
279 pbkdf2_sha1(ssid
->wpa_passphrase
,
280 ssid
->ssid
, ssid
->ssid_len
,
281 4096, ssid
->wpa_psk
->psk
, PMK_LEN
);
282 wpa_hexdump_key(MSG_DEBUG
, "PSK (from passphrase)",
283 ssid
->wpa_psk
->psk
, PMK_LEN
);
288 int hostapd_setup_wpa_psk(struct hostapd_bss_config
*conf
)
290 struct hostapd_ssid
*ssid
= &conf
->ssid
;
292 if (ssid
->wpa_passphrase
!= NULL
) {
293 if (ssid
->wpa_psk
!= NULL
) {
294 wpa_printf(MSG_DEBUG
, "Using pre-configured WPA PSK "
295 "instead of passphrase");
297 wpa_printf(MSG_DEBUG
, "Deriving WPA PSK based on "
299 if (hostapd_derive_psk(ssid
) < 0)
302 ssid
->wpa_psk
->group
= 1;
305 if (ssid
->wpa_psk_file
) {
306 if (hostapd_config_read_wpa_psk(ssid
->wpa_psk_file
,
315 int hostapd_wep_key_cmp(struct hostapd_wep_keys
*a
, struct hostapd_wep_keys
*b
)
319 if (a
->idx
!= b
->idx
|| a
->default_len
!= b
->default_len
)
321 for (i
= 0; i
< NUM_WEP_KEYS
; i
++)
322 if (a
->len
[i
] != b
->len
[i
] ||
323 os_memcmp(a
->key
[i
], b
->key
[i
], a
->len
[i
]) != 0)
329 static void hostapd_config_free_radius(struct hostapd_radius_server
*servers
,
334 for (i
= 0; i
< num_servers
; i
++) {
335 os_free(servers
[i
].shared_secret
);
341 struct hostapd_radius_attr
*
342 hostapd_config_get_radius_attr(struct hostapd_radius_attr
*attr
, u8 type
)
344 for (; attr
; attr
= attr
->next
) {
345 if (attr
->type
== type
)
352 static void hostapd_config_free_radius_attr(struct hostapd_radius_attr
*attr
)
354 struct hostapd_radius_attr
*prev
;
359 wpabuf_free(prev
->val
);
365 static void hostapd_config_free_eap_user(struct hostapd_eap_user
*user
)
367 os_free(user
->identity
);
368 os_free(user
->password
);
373 static void hostapd_config_free_wep(struct hostapd_wep_keys
*keys
)
376 for (i
= 0; i
< NUM_WEP_KEYS
; i
++) {
377 os_free(keys
->key
[i
]);
383 static void hostapd_config_free_bss(struct hostapd_bss_config
*conf
)
385 struct hostapd_wpa_psk
*psk
, *prev
;
386 struct hostapd_eap_user
*user
, *prev_user
;
391 psk
= conf
->ssid
.wpa_psk
;
398 os_free(conf
->ssid
.wpa_passphrase
);
399 os_free(conf
->ssid
.wpa_psk_file
);
400 hostapd_config_free_wep(&conf
->ssid
.wep
);
401 #ifdef CONFIG_FULL_DYNAMIC_VLAN
402 os_free(conf
->ssid
.vlan_tagged_interface
);
403 #endif /* CONFIG_FULL_DYNAMIC_VLAN */
405 user
= conf
->eap_user
;
409 hostapd_config_free_eap_user(prev_user
);
412 os_free(conf
->dump_log_name
);
413 os_free(conf
->eap_req_id_text
);
414 os_free(conf
->accept_mac
);
415 os_free(conf
->deny_mac
);
416 os_free(conf
->nas_identifier
);
417 hostapd_config_free_radius(conf
->radius
->auth_servers
,
418 conf
->radius
->num_auth_servers
);
419 hostapd_config_free_radius(conf
->radius
->acct_servers
,
420 conf
->radius
->num_acct_servers
);
421 hostapd_config_free_radius_attr(conf
->radius_auth_req_attr
);
422 hostapd_config_free_radius_attr(conf
->radius_acct_req_attr
);
423 os_free(conf
->rsn_preauth_interfaces
);
424 os_free(conf
->ctrl_interface
);
425 os_free(conf
->ca_cert
);
426 os_free(conf
->server_cert
);
427 os_free(conf
->private_key
);
428 os_free(conf
->private_key_passwd
);
429 os_free(conf
->dh_file
);
430 os_free(conf
->pac_opaque_encr_key
);
431 os_free(conf
->eap_fast_a_id
);
432 os_free(conf
->eap_fast_a_id_info
);
433 os_free(conf
->eap_sim_db
);
434 os_free(conf
->radius_server_clients
);
435 os_free(conf
->test_socket
);
436 os_free(conf
->radius
);
437 os_free(conf
->radius_das_shared_secret
);
438 hostapd_config_free_vlan(conf
);
439 if (conf
->ssid
.dyn_vlan_keys
) {
440 struct hostapd_ssid
*ssid
= &conf
->ssid
;
442 for (i
= 0; i
<= ssid
->max_dyn_vlan_keys
; i
++) {
443 if (ssid
->dyn_vlan_keys
[i
] == NULL
)
445 hostapd_config_free_wep(ssid
->dyn_vlan_keys
[i
]);
446 os_free(ssid
->dyn_vlan_keys
[i
]);
448 os_free(ssid
->dyn_vlan_keys
);
449 ssid
->dyn_vlan_keys
= NULL
;
452 os_free(conf
->time_zone
);
454 #ifdef CONFIG_IEEE80211R
456 struct ft_remote_r0kh
*r0kh
, *r0kh_prev
;
457 struct ft_remote_r1kh
*r1kh
, *r1kh_prev
;
459 r0kh
= conf
->r0kh_list
;
460 conf
->r0kh_list
= NULL
;
467 r1kh
= conf
->r1kh_list
;
468 conf
->r1kh_list
= NULL
;
475 #endif /* CONFIG_IEEE80211R */
478 os_free(conf
->wps_pin_requests
);
479 os_free(conf
->device_name
);
480 os_free(conf
->manufacturer
);
481 os_free(conf
->model_name
);
482 os_free(conf
->model_number
);
483 os_free(conf
->serial_number
);
484 os_free(conf
->config_methods
);
485 os_free(conf
->ap_pin
);
486 os_free(conf
->extra_cred
);
487 os_free(conf
->ap_settings
);
488 os_free(conf
->upnp_iface
);
489 os_free(conf
->friendly_name
);
490 os_free(conf
->manufacturer_url
);
491 os_free(conf
->model_description
);
492 os_free(conf
->model_url
);
494 wpabuf_free(conf
->wps_nfc_dh_pubkey
);
495 wpabuf_free(conf
->wps_nfc_dh_privkey
);
496 wpabuf_free(conf
->wps_nfc_dev_pw
);
497 #endif /* CONFIG_WPS */
499 os_free(conf
->roaming_consortium
);
500 os_free(conf
->venue_name
);
501 os_free(conf
->network_auth_type
);
502 os_free(conf
->domain_name
);
504 #ifdef CONFIG_RADIUS_TEST
505 os_free(conf
->dump_msk_file
);
506 #endif /* CONFIG_RADIUS_TEST */
511 * hostapd_config_free - Free hostapd configuration
512 * @conf: Configuration data from hostapd_config_read().
514 void hostapd_config_free(struct hostapd_config
*conf
)
521 for (i
= 0; i
< conf
->num_bss
; i
++)
522 hostapd_config_free_bss(&conf
->bss
[i
]);
524 os_free(conf
->supported_rates
);
525 os_free(conf
->basic_rates
);
532 * hostapd_maclist_found - Find a MAC address from a list
533 * @list: MAC address list
534 * @num_entries: Number of addresses in the list
535 * @addr: Address to search for
536 * @vlan_id: Buffer for returning VLAN ID or %NULL if not needed
537 * Returns: 1 if address is in the list or 0 if not.
539 * Perform a binary search for given MAC address from a pre-sorted list.
541 int hostapd_maclist_found(struct mac_acl_entry
*list
, int num_entries
,
542 const u8
*addr
, int *vlan_id
)
544 int start
, end
, middle
, res
;
547 end
= num_entries
- 1;
549 while (start
<= end
) {
550 middle
= (start
+ end
) / 2;
551 res
= os_memcmp(list
[middle
].addr
, addr
, ETH_ALEN
);
554 *vlan_id
= list
[middle
].vlan_id
;
567 int hostapd_rate_found(int *list
, int rate
)
574 for (i
= 0; list
[i
] >= 0; i
++)
582 const char * hostapd_get_vlan_id_ifname(struct hostapd_vlan
*vlan
, int vlan_id
)
584 struct hostapd_vlan
*v
= vlan
;
586 if (v
->vlan_id
== vlan_id
|| v
->vlan_id
== VLAN_ID_WILDCARD
)
594 const u8
* hostapd_get_psk(const struct hostapd_bss_config
*conf
,
595 const u8
*addr
, const u8
*prev_psk
)
597 struct hostapd_wpa_psk
*psk
;
598 int next_ok
= prev_psk
== NULL
;
600 for (psk
= conf
->ssid
.wpa_psk
; psk
!= NULL
; psk
= psk
->next
) {
602 (psk
->group
|| os_memcmp(psk
->addr
, addr
, ETH_ALEN
) == 0))
605 if (psk
->psk
== prev_psk
)
613 const struct hostapd_eap_user
*
614 hostapd_get_eap_user(const struct hostapd_bss_config
*conf
, const u8
*identity
,
615 size_t identity_len
, int phase2
)
617 struct hostapd_eap_user
*user
= conf
->eap_user
;
620 if (conf
->wps_state
&& identity_len
== WSC_ID_ENROLLEE_LEN
&&
621 os_memcmp(identity
, WSC_ID_ENROLLEE
, WSC_ID_ENROLLEE_LEN
) == 0) {
622 static struct hostapd_eap_user wsc_enrollee
;
623 os_memset(&wsc_enrollee
, 0, sizeof(wsc_enrollee
));
624 wsc_enrollee
.methods
[0].method
= eap_server_get_type(
625 "WSC", &wsc_enrollee
.methods
[0].vendor
);
626 return &wsc_enrollee
;
629 if (conf
->wps_state
&& identity_len
== WSC_ID_REGISTRAR_LEN
&&
630 os_memcmp(identity
, WSC_ID_REGISTRAR
, WSC_ID_REGISTRAR_LEN
) == 0) {
631 static struct hostapd_eap_user wsc_registrar
;
632 os_memset(&wsc_registrar
, 0, sizeof(wsc_registrar
));
633 wsc_registrar
.methods
[0].method
= eap_server_get_type(
634 "WSC", &wsc_registrar
.methods
[0].vendor
);
635 wsc_registrar
.password
= (u8
*) conf
->ap_pin
;
636 wsc_registrar
.password_len
= conf
->ap_pin
?
637 os_strlen(conf
->ap_pin
) : 0;
638 return &wsc_registrar
;
640 #endif /* CONFIG_WPS */
643 if (!phase2
&& user
->identity
== NULL
) {
648 if (user
->phase2
== !!phase2
&& user
->wildcard_prefix
&&
649 identity_len
>= user
->identity_len
&&
650 os_memcmp(user
->identity
, identity
, user
->identity_len
) ==
652 /* Wildcard prefix match */
656 if (user
->phase2
== !!phase2
&&
657 user
->identity_len
== identity_len
&&
658 os_memcmp(user
->identity
, identity
, identity_len
) == 0)