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/*
* hostapd / Configuration helper functions
* Copyright (c) 2003-2012, Jouni Malinen <j@w1.fi>
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#include "utils/includes.h"
#include "utils/common.h"
#include "crypto/sha1.h"
#include "common/ieee802_11_defs.h"
#include "common/eapol_common.h"
#include "common/sae.h"
#include "ap/wpa_auth.h"
#include "ap/ap_config.h"
#include "utils/wpa_debug.h"
#include "ap/hostapd.h"
#include "ap/wpa_auth_i.h"
#include "esp_wifi_driver.h"
#include "esp_wifi_types.h"
void hostapd_config_defaults_bss(struct hostapd_bss_config *bss)
{
bss->auth_algs = WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED;
bss->wep_rekeying_period = 300;
/* use key0 in individual key and key1 in broadcast key */
bss->broadcast_key_idx_min = 1;
bss->broadcast_key_idx_max = 2;
bss->wpa_group_rekey = 600;
bss->wpa_gmk_rekey = 86400;
bss->wpa_key_mgmt = WPA_KEY_MGMT_PSK;
bss->wpa_pairwise = WPA_CIPHER_TKIP;
bss->wpa_group = WPA_CIPHER_TKIP;
bss->rsn_pairwise = 0;
bss->max_num_sta = MAX_STA_COUNT;
bss->dtim_period = 2;
bss->ap_max_inactivity = 5*60; //AP_MAX_INACTIVITY;
bss->eapol_version = EAPOL_VERSION;
bss->max_listen_interval = 65535;
#ifdef CONFIG_IEEE80211W
bss->assoc_sa_query_max_timeout = 1000;
bss->assoc_sa_query_retry_timeout = 201;
#endif /* CONFIG_IEEE80211W */
#ifdef EAP_SERVER_FAST
/* both anonymous and authenticated provisioning */
bss->eap_fast_prov = 3;
bss->pac_key_lifetime = 7 * 24 * 60 * 60;
bss->pac_key_refresh_time = 1 * 24 * 60 * 60;
#endif /* EAP_SERVER_FAST */
/* Set to -1 as defaults depends on HT in setup */
bss->wmm_enabled = -1;
#ifdef CONFIG_IEEE80211R
bss->ft_over_ds = 1;
#endif /* CONFIG_IEEE80211R */
}
struct hostapd_config * hostapd_config_defaults(void)
{
#define ecw2cw(ecw) ((1 << (ecw)) - 1)
struct hostapd_config *conf;
struct hostapd_bss_config *bss;
#undef ecw2cw
conf = (struct hostapd_config *)os_zalloc(sizeof(*conf));
bss = (struct hostapd_bss_config *)os_zalloc(sizeof(*bss));
if (conf == NULL || bss == NULL) {
wpa_printf(MSG_DEBUG, "Failed to allocate memory for "
"configuration data.");
os_free(conf);
os_free(bss);
return NULL;
}
hostapd_config_defaults_bss(bss);
conf->num_bss = 1;
conf->bss = bss;
conf->beacon_int = 100;
conf->rts_threshold = -1; /* use driver default: 2347 */
conf->fragm_threshold = -1; /* user driver default: 2346 */
conf->send_probe_response = 1;
conf->ht_capab = HT_CAP_INFO_SMPS_DISABLED;
conf->ap_table_max_size = 255;
conf->ap_table_expiration_time = 60;
return conf;
}
int hostapd_mac_comp(const void *a, const void *b)
{
return memcmp(a, b, sizeof(macaddr));
}
int hostapd_mac_comp_empty(const void *a)
{
u8 empty[ETH_ALEN];
os_bzero(empty, ETH_ALEN);
return memcmp(a, empty, ETH_ALEN);
}
static int hostapd_derive_psk(struct hostapd_ssid *ssid)
{
ssid->wpa_psk = (struct hostapd_wpa_psk *)os_zalloc(sizeof(struct hostapd_wpa_psk));
if (ssid->wpa_psk == NULL) {
wpa_printf(MSG_ERROR, "Unable to alloc space for PSK");
return -1;
}
wpa_hexdump_ascii(MSG_DEBUG, "SSID",
(u8 *) ssid->ssid, ssid->ssid_len);
wpa_hexdump_ascii_key(MSG_DEBUG, "PSK (ASCII passphrase)",
(u8 *) ssid->wpa_passphrase,
strlen(ssid->wpa_passphrase));
#ifdef ESP_SUPPLICANT
memcpy(ssid->wpa_psk->psk, esp_wifi_ap_get_prof_pmk_internal(), PMK_LEN);
#else
/* It's too SLOW */
pbkdf2_sha1(ssid->wpa_passphrase,
ssid->ssid, ssid->ssid_len,
4096, ssid->wpa_psk->psk, PMK_LEN);
#endif
wpa_hexdump_key(MSG_DEBUG, "PSK (from passphrase)",
ssid->wpa_psk->psk, PMK_LEN);
return 0;
}
int hostapd_setup_sae_pt(struct hostapd_bss_config *conf)
{
#ifdef CONFIG_SAE
struct hostapd_ssid *ssid = &conf->ssid;
if ((conf->sae_pwe == SAE_PWE_HUNT_AND_PECK ||
!wpa_key_mgmt_sae(conf->wpa_key_mgmt)))
return 0; /* PT not needed */
sae_deinit_pt(ssid->pt);
ssid->pt = NULL;
if (ssid->wpa_passphrase) {
ssid->pt = sae_derive_pt(conf->sae_groups, ssid->ssid,
ssid->ssid_len,
(const u8 *) ssid->wpa_passphrase,
os_strlen(ssid->wpa_passphrase),
NULL);
if (!ssid->pt)
return -1;
}
#endif /* CONFIG_SAE */
return 0;
}
int hostapd_setup_wpa_psk(struct hostapd_bss_config *conf)
{
struct hostapd_ssid *ssid = &conf->ssid;
if (hostapd_setup_sae_pt(conf) < 0)
return -1;
if (ssid->wpa_passphrase != NULL) {
if (ssid->wpa_psk != NULL) {
wpa_printf(MSG_DEBUG, "Using pre-configured WPA PSK "
"instead of passphrase");
} else {
wpa_printf(MSG_DEBUG, "Deriving WPA PSK based on "
"passphrase\n");
if (hostapd_derive_psk(ssid) < 0)
return -1;
}
ssid->wpa_psk->group = 1;
}
return 0;
}
int hostapd_wep_key_cmp(struct hostapd_wep_keys *a, struct hostapd_wep_keys *b)
{
int i;
if (a->idx != b->idx || a->default_len != b->default_len)
return 1;
for (i = 0; i < NUM_WEP_KEYS; i++)
if (a->len[i] != b->len[i] ||
memcmp(a->key[i], b->key[i], a->len[i]) != 0)
return 1;
return 0;
}
/**
* hostapd_maclist_found - Find a MAC address from a list
* @list: MAC address list
* @num_entries: Number of addresses in the list
* @addr: Address to search for
* @vlan_id: Buffer for returning VLAN ID or %NULL if not needed
* Returns: 1 if address is in the list or 0 if not.
*
* Perform a binary search for given MAC address from a pre-sorted list.
*/
int hostapd_maclist_found(struct mac_acl_entry *list, int num_entries,
const u8 *addr, int *vlan_id)
{
int start, end, middle, res;
start = 0;
end = num_entries - 1;
while (start <= end) {
middle = (start + end) / 2;
res = memcmp(list[middle].addr, addr, ETH_ALEN);
if (res == 0) {
if (vlan_id)
*vlan_id = list[middle].vlan_id;
return 1;
}
if (res < 0)
start = middle + 1;
else
end = middle - 1;
}
return 0;
}
int hostapd_rate_found(int *list, int rate)
{
int i;
if (list == NULL)
return 0;
for (i = 0; list[i] >= 0; i++)
if (list[i] == rate)
return 1;
return 0;
}
const u8 * hostapd_get_psk(const struct hostapd_bss_config *conf,
const u8 *addr, const u8 *prev_psk)
{
struct hostapd_wpa_psk *psk;
int next_ok = prev_psk == NULL;
for (psk = conf->ssid.wpa_psk; psk != NULL; psk = psk->next) {
if (next_ok &&
(psk->group || memcmp(psk->addr, addr, ETH_ALEN) == 0))
return psk->psk;
if (psk->psk == prev_psk)
next_ok = 1;
}
return NULL;
}
void hostapd_config_clear_wpa_psk(struct hostapd_wpa_psk **l)
{
struct hostapd_wpa_psk *psk, *tmp;
for (psk = *l; psk;) {
tmp = psk;
psk = psk->next;
bin_clear_free(tmp, sizeof(*tmp));
}
*l = NULL;
}
void hostapd_config_free_bss(struct hostapd_bss_config *conf)
{
hostapd_config_clear_wpa_psk(&conf->ssid.wpa_psk);
#ifdef CONFIG_SAE
sae_deinit_pt(conf->ssid.pt);
#endif /* CONFIG_SAE */
os_free(conf);
}
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