/*
* hostapd / Configuration helper functions
* Copyright (c) 2003-2014, 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 "crypto/tls.h"
#include "radius/radius_client.h"
#include "common/ieee802_11_defs.h"
#include "common/eapol_common.h"
#include "common/dhcp.h"
#include "eap_common/eap_wsc_common.h"
#include "eap_server/eap.h"
#include "wpa_auth.h"
#include "sta_info.h"
#include "ap_config.h"
static void hostapd_config_free_vlan(struct hostapd_bss_config *bss)
{
struct hostapd_vlan *vlan, *prev;
vlan = bss->vlan;
prev = NULL;
while (vlan) {
prev = vlan;
vlan = vlan->next;
os_free(prev);
}
bss->vlan = NULL;
}
#ifndef DEFAULT_WPA_DISABLE_EAPOL_KEY_RETRIES
#define DEFAULT_WPA_DISABLE_EAPOL_KEY_RETRIES 0
#endif /* DEFAULT_WPA_DISABLE_EAPOL_KEY_RETRIES */
void hostapd_config_defaults_bss(struct hostapd_bss_config *bss)
{
dl_list_init(&bss->anqp_elem);
bss->logger_syslog_level = HOSTAPD_LEVEL_INFO;
bss->logger_stdout_level = HOSTAPD_LEVEL_INFO;
bss->logger_syslog = (unsigned int) -1;
bss->logger_stdout = (unsigned int) -1;
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->eap_reauth_period = 3600;
bss->wpa_group_rekey = 600;
bss->wpa_gmk_rekey = 86400;
bss->wpa_group_update_count = 4;
bss->wpa_pairwise_update_count = 4;
bss->wpa_disable_eapol_key_retries =
DEFAULT_WPA_DISABLE_EAPOL_KEY_RETRIES;
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->radius_server_auth_port = 1812;
bss->eap_sim_db_timeout = 1;
bss->ap_max_inactivity = AP_MAX_INACTIVITY;
bss->eapol_version = EAPOL_VERSION;
bss->max_listen_interval = 65535;
bss->pwd_group = 19; /* ECC: GF(p=256) */
#ifdef CONFIG_IEEE80211W
bss->assoc_sa_query_max_timeout = 1000;
bss->assoc_sa_query_retry_timeout = 201;
bss->group_mgmt_cipher = WPA_CIPHER_AES_128_CMAC;
#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_AP
bss->ft_over_ds = 1;
bss->rkh_pos_timeout = 86400;
bss->rkh_neg_timeout = 60;
bss->rkh_pull_timeout = 1000;
bss->rkh_pull_retries = 4;
bss->r0_key_lifetime = 1209600;
#endif /* CONFIG_IEEE80211R_AP */
bss->radius_das_time_window = 300;
bss->sae_anti_clogging_threshold = 5;
bss->sae_sync = 5;
bss->gas_frag_limit = 1400;
#ifdef CONFIG_FILS
dl_list_init(&bss->fils_realms);
bss->fils_hlp_wait_time = 30;
bss->dhcp_server_port = DHCP_SERVER_PORT;
bss->dhcp_relay_port = DHCP_SERVER_PORT;
#endif /* CONFIG_FILS */
bss->broadcast_deauth = 1;
#ifdef CONFIG_MBO
bss->mbo_cell_data_conn_pref = -1;
#endif /* CONFIG_MBO */
/* Disable TLS v1.3 by default for now to avoid interoperability issue.
* This can be enabled by default once the implementation has been fully
* completed and tested with other implementations. */
bss->tls_flags = TLS_CONN_DISABLE_TLSv1_3;
bss->send_probe_response = 1;
#ifdef CONFIG_HS20
bss->hs20_release = (HS20_VERSION >> 4) + 1;
#endif /* CONFIG_HS20 */
/* Default to strict CRL checking. */
bss->check_crl_strict = 1;
}
struct hostapd_config * hostapd_config_defaults(void)
{
#define ecw2cw(ecw) ((1 << (ecw)) - 1)
struct hostapd_config *conf;
struct hostapd_bss_config *bss;
const int aCWmin = 4, aCWmax = 10;
const struct hostapd_wmm_ac_params ac_bk =
{ aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */
const struct hostapd_wmm_ac_params ac_be =
{ aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */
const struct hostapd_wmm_ac_params ac_vi = /* video traffic */
{ aCWmin - 1, aCWmin, 2, 3008 / 32, 0 };
const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */
{ aCWmin - 2, aCWmin - 1, 2, 1504 / 32, 0 };
const struct hostapd_tx_queue_params txq_bk =
{ 7, ecw2cw(aCWmin), ecw2cw(aCWmax), 0 };
const struct hostapd_tx_queue_params txq_be =
{ 3, ecw2cw(aCWmin), 4 * (ecw2cw(aCWmin) + 1) - 1, 0};
const struct hostapd_tx_queue_params txq_vi =
{ 1, (ecw2cw(aCWmin) + 1) / 2 - 1, ecw2cw(aCWmin), 30};
const struct hostapd_tx_queue_params txq_vo =
{ 1, (ecw2cw(aCWmin) + 1) / 4 - 1,
(ecw2cw(aCWmin) + 1) / 2 - 1, 15};
#undef ecw2cw
conf = os_zalloc(sizeof(*conf));
bss = os_zalloc(sizeof(*bss));
if (conf == NULL || bss == NULL) {
wpa_printf(MSG_ERROR, "Failed to allocate memory for "
"configuration data.");
os_free(conf);
os_free(bss);
return NULL;
}
conf->bss = os_calloc(1, sizeof(struct hostapd_bss_config *));
if (conf->bss == NULL) {
os_free(conf);
os_free(bss);
return NULL;
}
conf->bss[0] = bss;
bss->radius = os_zalloc(sizeof(*bss->radius));
if (bss->radius == NULL) {
os_free(conf->bss);
os_free(conf);
os_free(bss);
return NULL;
}
hostapd_config_defaults_bss(bss);
conf->num_bss = 1;
conf->beacon_int = 100;
conf->rts_threshold = -2; /* use driver default: 2347 */
conf->fragm_threshold = -2; /* user driver default: 2346 */
/* Set to invalid value means do not add Power Constraint IE */
conf->local_pwr_constraint = -1;
conf->wmm_ac_params[0] = ac_be;
conf->wmm_ac_params[1] = ac_bk;
conf->wmm_ac_params[2] = ac_vi;
conf->wmm_ac_params[3] = ac_vo;
conf->tx_queue[0] = txq_vo;
conf->tx_queue[1] = txq_vi;
conf->tx_queue[2] = txq_be;
conf->tx_queue[3] = txq_bk;
conf->ht_capab = HT_CAP_INFO_SMPS_DISABLED;
conf->ap_table_max_size = 255;
conf->ap_table_expiration_time = 60;
conf->track_sta_max_age = 180;
#ifdef CONFIG_TESTING_OPTIONS
conf->ignore_probe_probability = 0.0;
conf->ignore_auth_probability = 0.0;
conf->ignore_assoc_probability = 0.0;
conf->ignore_reassoc_probability = 0.0;
conf->corrupt_gtk_rekey_mic_probability = 0.0;
conf->ecsa_ie_only = 0;
#endif /* CONFIG_TESTING_OPTIONS */
conf->acs = 0;
conf->acs_ch_list.num = 0;
#ifdef CONFIG_ACS
conf->acs_num_scans = 5;
#endif /* CONFIG_ACS */
/* The third octet of the country string uses an ASCII space character
* by default to indicate that the regulations encompass all
* environments for the current frequency band in the country. */
conf->country[2] = ' ';
conf->rssi_reject_assoc_rssi = 0;
conf->rssi_reject_assoc_timeout = 30;
return conf;
}
int hostapd_mac_comp(const void *a, const void *b)
{
return os_memcmp(a, b, sizeof(macaddr));
}
static int hostapd_config_read_wpa_psk(const char *fname,
struct hostapd_ssid *ssid)
{
FILE *f;
char buf[128], *pos;
const char *keyid;
char *context;
char *context2;
char *token;
char *name;
char *value;
int line = 0, ret = 0, len, ok;
u8 addr[ETH_ALEN];
struct hostapd_wpa_psk *psk;
if (!fname)
return 0;
f = fopen(fname, "r");
if (!f) {
wpa_printf(MSG_ERROR, "WPA PSK file '%s' not found.", fname);
return -1;
}
while (fgets(buf, sizeof(buf), f)) {
int vlan_id = 0;
line++;
if (buf[0] == '#')
continue;
pos = buf;
while (*pos != '\0') {
if (*pos == '\n') {
*pos = '\0';
break;
}
pos++;
}
if (buf[0] == '\0')
continue;
context = NULL;
keyid = NULL;
while ((token = str_token(buf, " ", &context))) {
if (!os_strchr(token, '='))
break;
context2 = NULL;
name = str_token(token, "=", &context2);
if (!name)
break;
value = str_token(token, "", &context2);
if (!value)
value = "";
if (!os_strcmp(name, "keyid")) {
keyid = value;
} else if (!os_strcmp(name, "vlanid")) {
vlan_id = atoi(value);
} else {
wpa_printf(MSG_ERROR,
"Unrecognized '%s=%s' on line %d in '%s'",
name, value, line, fname);
ret = -1;
break;
}
}
if (ret == -1)
break;
if (!token)
token = "";
if (hwaddr_aton(token, addr)) {
wpa_printf(MSG_ERROR, "Invalid MAC address '%s' on "
"line %d in '%s'", token, line, fname);
ret = -1;
break;
}
psk = os_zalloc(sizeof(*psk));
if (psk == NULL) {
wpa_printf(MSG_ERROR, "WPA PSK allocation failed");
ret = -1;
break;
}
psk->vlan_id = vlan_id;
if (is_zero_ether_addr(addr))
psk->group = 1;
else
os_memcpy(psk->addr, addr, ETH_ALEN);
pos = str_token(buf, "", &context);
if (!pos) {
wpa_printf(MSG_ERROR, "No PSK on line %d in '%s'",
line, fname);
os_free(psk);
ret = -1;
break;
}
ok = 0;
len = os_strlen(pos);
if (len == 64 && hexstr2bin(pos, psk->psk, PMK_LEN) == 0)
ok = 1;
else if (len >= 8 && len < 64) {
pbkdf2_sha1(pos, ssid->ssid, ssid->ssid_len,
4096, psk->psk, PMK_LEN);
ok = 1;
}
if (!ok) {
wpa_printf(MSG_ERROR, "Invalid PSK '%s' on line %d in "
"'%s'", pos, line, fname);
os_free(psk);
ret = -1;
break;
}
if (keyid) {
len = os_strlcpy(psk->keyid, keyid, sizeof(psk->keyid));
if ((size_t) len >= sizeof(psk->keyid)) {
wpa_printf(MSG_ERROR,
"PSK keyid too long on line %d in '%s'",
line, fname);
os_free(psk);
ret = -1;
break;
}
}
psk->next = ssid->wpa_psk;
ssid->wpa_psk = psk;
}
fclose(f);
return ret;
}
static int hostapd_derive_psk(struct hostapd_ssid *ssid)
{
ssid->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,
os_strlen(ssid->wpa_passphrase));
pbkdf2_sha1(ssid->wpa_passphrase,
ssid->ssid, ssid->ssid_len,
4096, ssid->wpa_psk->psk, PMK_LEN);
wpa_hexdump_key(MSG_DEBUG, "PSK (from passphrase)",
ssid->wpa_psk->psk, PMK_LEN);
return 0;
}
int hostapd_setup_wpa_psk(struct hostapd_bss_config *conf)
{
struct hostapd_ssid *ssid = &conf->ssid;
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");
if (hostapd_derive_psk(ssid) < 0)
return -1;
}
ssid->wpa_psk->group = 1;
}
return hostapd_config_read_wpa_psk(ssid->wpa_psk_file, &conf->ssid);
}
static void hostapd_config_free_radius(struct hostapd_radius_server *servers,
int num_servers)
{
int i;
for (i = 0; i < num_servers; i++) {
os_free(servers[i].shared_secret);
}
os_free(servers);
}
struct hostapd_radius_attr *
hostapd_config_get_radius_attr(struct hostapd_radius_attr *attr, u8 type)
{
for (; attr; attr = attr->next) {
if (attr->type == type)
return attr;
}
return NULL;
}
static void hostapd_config_free_radius_attr(struct hostapd_radius_attr *attr)
{
struct hostapd_radius_attr *prev;
while (attr) {
prev = attr;
attr = attr->next;
wpabuf_free(prev->val);
os_free(prev);
}
}
void hostapd_config_free_eap_user(struct hostapd_eap_user *user)
{
hostapd_config_free_radius_attr(user->accept_attr);
os_free(user->identity);
bin_clear_free(user->password, user->password_len);
bin_clear_free(user->salt, user->salt_len);
os_free(user);
}
void hostapd_config_free_eap_users(struct hostapd_eap_user *user)
{
struct hostapd_eap_user *prev_user;
while (user) {
prev_user = user;
user = user->next;
hostapd_config_free_eap_user(prev_user);
}
}
static void hostapd_config_free_wep(struct hostapd_wep_keys *keys)
{
int i;
for (i = 0; i < NUM_WEP_KEYS; i++) {
bin_clear_free(keys->key[i], keys->len[i]);
keys->key[i] = 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;
}
static void hostapd_config_free_anqp_elem(struct hostapd_bss_config *conf)
{
struct anqp_element *elem;
while ((elem = dl_list_first(&conf->anqp_elem, struct anqp_element,
list))) {
dl_list_del(&elem->list);
wpabuf_free(elem->payload);
os_free(elem);
}
}
static void hostapd_config_free_fils_realms(struct hostapd_bss_config *conf)
{
#ifdef CONFIG_FILS
struct fils_realm *realm;
while ((realm = dl_list_first(&conf->fils_realms, struct fils_realm,
list))) {
dl_list_del(&realm->list);
os_free(realm);
}
#endif /* CONFIG_FILS */
}
static void hostapd_config_free_sae_passwords(struct hostapd_bss_config *conf)
{
struct sae_password_entry *pw, *tmp;
pw = conf->sae_passwords;
conf->sae_passwords = NULL;
while (pw) {
tmp = pw;
pw = pw->next;
str_clear_free(tmp->password);
os_free(tmp->identifier);
os_free(tmp);
}
}
void hostapd_config_free_bss(struct hostapd_bss_config *conf)
{
if (conf == NULL)
return;
hostapd_config_clear_wpa_psk(&conf->ssid.wpa_psk);
str_clear_free(conf->ssid.wpa_passphrase);
os_free(conf->ssid.wpa_psk_file);
hostapd_config_free_wep(&conf->ssid.wep);
#ifdef CONFIG_FULL_DYNAMIC_VLAN
os_free(conf->ssid.vlan_tagged_interface);
#endif /* CONFIG_FULL_DYNAMIC_VLAN */
hostapd_config_free_eap_users(conf->eap_user);
os_free(conf->eap_user_sqlite);
os_free(conf->eap_req_id_text);
os_free(conf->erp_domain);
os_free(conf->accept_mac);
os_free(conf->deny_mac);
os_free(conf->nas_identifier);
if (conf->radius) {
hostapd_config_free_radius(conf->radius->auth_servers,
conf->radius->num_auth_servers);
hostapd_config_free_radius(conf->radius->acct_servers,
conf->radius->num_acct_servers);
}
hostapd_config_free_radius_attr(conf->radius_auth_req_attr);
hostapd_config_free_radius_attr(conf->radius_acct_req_attr);
os_free(conf->rsn_preauth_interfaces);
os_free(conf->ctrl_interface);
os_free(conf->ca_cert);
os_free(conf->server_cert);
os_free(conf->private_key);
os_free(conf->private_key_passwd);
os_free(conf->check_cert_subject);
os_free(conf->ocsp_stapling_response);
os_free(conf->ocsp_stapling_response_multi);
os_free(conf->dh_file);
os_free(conf->openssl_ciphers);
os_free(conf->openssl_ecdh_curves);
os_free(conf->pac_opaque_encr_key);
os_free(conf->eap_fast_a_id);
os_free(conf->eap_fast_a_id_info);
os_free(conf->eap_sim_db);
os_free(conf->radius_server_clients);
os_free(conf->radius);
os_free(conf->radius_das_shared_secret);
hostapd_config_free_vlan(conf);
os_free(conf->time_zone);
#ifdef CONFIG_IEEE80211R_AP
{
struct ft_remote_r0kh *r0kh, *r0kh_prev;
struct ft_remote_r1kh *r1kh, *r1kh_prev;
r0kh = conf->r0kh_list;
conf->r0kh_list = NULL;
while (r0kh) {
r0kh_prev = r0kh;
r0kh = r0kh->next;
os_free(r0kh_prev);
}
r1kh = conf->r1kh_list;
conf->r1kh_list = NULL;
while (r1kh) {
r1kh_prev = r1kh;
r1kh = r1kh->next;
os_free(r1kh_prev);
}
}
#endif /* CONFIG_IEEE80211R_AP */
#ifdef CONFIG_WPS
os_free(conf->wps_pin_requests);
os_free(conf->device_name);
os_free(conf->manufacturer);
os_free(conf->model_name);
os_free(conf->model_number);
os_free(conf->serial_number);
os_free(conf->config_methods);
os_free(conf->ap_pin);
os_free(conf->extra_cred);
os_free(conf->ap_settings);
hostapd_config_clear_wpa_psk(&conf->multi_ap_backhaul_ssid.wpa_psk);
str_clear_free(conf->multi_ap_backhaul_ssid.wpa_passphrase);
os_free(conf->upnp_iface);
os_free(conf->friendly_name);
os_free(conf->manufacturer_url);
os_free(conf->model_description);
os_free(conf->model_url);
os_free(conf->upc);
{
unsigned int i;
for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++)
wpabuf_free(conf->wps_vendor_ext[i]);
}
wpabuf_free(conf->wps_nfc_dh_pubkey);
wpabuf_free(conf->wps_nfc_dh_privkey);
wpabuf_free(conf->wps_nfc_dev_pw);
#endif /* CONFIG_WPS */
os_free(conf->roaming_consortium);
os_free(conf->venue_name);
os_free(conf->venue_url);
os_free(conf->nai_realm_data);
os_free(conf->network_auth_type);
os_free(conf->anqp_3gpp_cell_net);
os_free(conf->domain_name);
hostapd_config_free_anqp_elem(conf);
#ifdef CONFIG_RADIUS_TEST
os_free(conf->dump_msk_file);
#endif /* CONFIG_RADIUS_TEST */
#ifdef CONFIG_HS20
os_free(conf->hs20_oper_friendly_name);
os_free(conf->hs20_wan_metrics);
os_free(conf->hs20_connection_capability);
os_free(conf->hs20_operating_class);
os_free(conf->hs20_icons);
if (conf->hs20_osu_providers) {
size_t i;
for (i = 0; i < conf->hs20_osu_providers_count; i++) {
struct hs20_osu_provider *p;
size_t j;
p = &conf->hs20_osu_providers[i];
os_free(p->friendly_name);
os_free(p->server_uri);
os_free(p->method_list);
for (j = 0; j < p->icons_count; j++)
os_free(p->icons[j]);
os_free(p->icons);
os_free(p->osu_nai);
os_free(p->osu_nai2);
os_free(p->service_desc);
}
os_free(conf->hs20_osu_providers);
}
if (conf->hs20_operator_icon) {
size_t i;
for (i = 0; i < conf->hs20_operator_icon_count; i++)
os_free(conf->hs20_operator_icon[i]);
os_free(conf->hs20_operator_icon);
}
os_free(conf->subscr_remediation_url);
os_free(conf->hs20_sim_provisioning_url);
os_free(conf->t_c_filename);
os_free(conf->t_c_server_url);
#endif /* CONFIG_HS20 */
wpabuf_free(conf->vendor_elements);
wpabuf_free(conf->assocresp_elements);
os_free(conf->sae_groups);
#ifdef CONFIG_OWE
os_free(conf->owe_groups);
#endif /* CONFIG_OWE */
os_free(conf->wowlan_triggers);
os_free(conf->server_id);
#ifdef CONFIG_TESTING_OPTIONS
wpabuf_free(conf->own_ie_override);
wpabuf_free(conf->sae_commit_override);
#endif /* CONFIG_TESTING_OPTIONS */
os_free(conf->no_probe_resp_if_seen_on);
os_free(conf->no_auth_if_seen_on);
hostapd_config_free_fils_realms(conf);
#ifdef CONFIG_DPP
os_free(conf->dpp_connector);
wpabuf_free(conf->dpp_netaccesskey);
wpabuf_free(conf->dpp_csign);
#endif /* CONFIG_DPP */
hostapd_config_free_sae_passwords(conf);
os_free(conf);
}
/**
* hostapd_config_free - Free hostapd configuration
* @conf: Configuration data from hostapd_config_read().
*/
void hostapd_config_free(struct hostapd_config *conf)
{
size_t i;
if (conf == NULL)
return;
for (i = 0; i < conf->num_bss; i++)
hostapd_config_free_bss(conf->bss[i]);
os_free(conf->bss);
os_free(conf->supported_rates);
os_free(conf->basic_rates);
os_free(conf->acs_ch_list.range);
os_free(conf->driver_params);
#ifdef CONFIG_ACS
os_free(conf->acs_chan_bias);
#endif /* CONFIG_ACS */
wpabuf_free(conf->lci);
wpabuf_free(conf->civic);
os_free(conf);
}
/**
* 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, struct vlan_description *vlan_id)
{
int start, end, middle, res;
start = 0;
end = num_entries - 1;
while (start <= end) {
middle = (start + end) / 2;
res = os_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;
}
int hostapd_vlan_valid(struct hostapd_vlan *vlan,
struct vlan_description *vlan_desc)
{
struct hostapd_vlan *v = vlan;
int i;
if (!vlan_desc->notempty || vlan_desc->untagged < 0 ||
vlan_desc->untagged > MAX_VLAN_ID)
return 0;
for (i = 0; i < MAX_NUM_TAGGED_VLAN; i++) {
if (vlan_desc->tagged[i] < 0 ||
vlan_desc->tagged[i] > MAX_VLAN_ID)
return 0;
}
if (!vlan_desc->untagged && !vlan_desc->tagged[0])
return 0;
while (v) {
if (!vlan_compare(&v->vlan_desc, vlan_desc) ||
v->vlan_id == VLAN_ID_WILDCARD)
return 1;
v = v->next;
}
return 0;
}
const char * hostapd_get_vlan_id_ifname(struct hostapd_vlan *vlan, int vlan_id)
{
struct hostapd_vlan *v = vlan;
while (v) {
if (v->vlan_id == vlan_id)
return v->ifname;
v = v->next;
}
return NULL;
}
const u8 * hostapd_get_psk(const struct hostapd_bss_config *conf,
const u8 *addr, const u8 *p2p_dev_addr,
const u8 *prev_psk, int *vlan_id)
{
struct hostapd_wpa_psk *psk;
int next_ok = prev_psk == NULL;
if (vlan_id)
*vlan_id = 0;
if (p2p_dev_addr && !is_zero_ether_addr(p2p_dev_addr)) {
wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR
" p2p_dev_addr=" MACSTR " prev_psk=%p",
MAC2STR(addr), MAC2STR(p2p_dev_addr), prev_psk);
addr = NULL; /* Use P2P Device Address for matching */
} else {
wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR
" prev_psk=%p",
MAC2STR(addr), prev_psk);
}
for (psk = conf->ssid.wpa_psk; psk != NULL; psk = psk->next) {
if (next_ok &&
(psk->group ||
(addr && os_memcmp(psk->addr, addr, ETH_ALEN) == 0) ||
(!addr && p2p_dev_addr &&
os_memcmp(psk->p2p_dev_addr, p2p_dev_addr, ETH_ALEN) ==
0))) {
if (vlan_id)
*vlan_id = psk->vlan_id;
return psk->psk;
}
if (psk->psk == prev_psk)
next_ok = 1;
}
return NULL;
}
static int hostapd_config_check_bss(struct hostapd_bss_config *bss,
struct hostapd_config *conf,
int full_config)
{
if (full_config && bss->ieee802_1x && !bss->eap_server &&
!bss->radius->auth_servers) {
wpa_printf(MSG_ERROR, "Invalid IEEE 802.1X configuration (no "
"EAP authenticator configured).");
return -1;
}
if (bss->wpa) {
int wep, i;
wep = bss->default_wep_key_len > 0 ||
bss->individual_wep_key_len > 0;
for (i = 0; i < NUM_WEP_KEYS; i++) {
if (bss->ssid.wep.keys_set) {
wep = 1;
break;
}
}
if (wep) {
wpa_printf(MSG_ERROR, "WEP configuration in a WPA network is not supported");
return -1;
}
}
if (full_config && bss->wpa &&
bss->wpa_psk_radius != PSK_RADIUS_IGNORED &&
bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH) {
wpa_printf(MSG_ERROR, "WPA-PSK using RADIUS enabled, but no "
"RADIUS checking (macaddr_acl=2) enabled.");
return -1;
}
if (full_config && bss->wpa && (bss->wpa_key_mgmt & WPA_KEY_MGMT_PSK) &&
bss->ssid.wpa_psk == NULL && bss->ssid.wpa_passphrase == NULL &&
bss->ssid.wpa_psk_file == NULL &&
(bss->wpa_psk_radius != PSK_RADIUS_REQUIRED ||
bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH)) {
wpa_printf(MSG_ERROR, "WPA-PSK enabled, but PSK or passphrase "
"is not configured.");
return -1;
}
if (full_config && !is_zero_ether_addr(bss->bssid)) {
size_t i;
for (i = 0; i < conf->num_bss; i++) {
if (conf->bss[i] != bss &&
(hostapd_mac_comp(conf->bss[i]->bssid,
bss->bssid) == 0)) {
wpa_printf(MSG_ERROR, "Duplicate BSSID " MACSTR
" on interface '%s' and '%s'.",
MAC2STR(bss->bssid),
conf->bss[i]->iface, bss->iface);
return -1;
}
}
}
#ifdef CONFIG_IEEE80211R_AP
if (full_config && wpa_key_mgmt_ft(bss->wpa_key_mgmt) &&
(bss->nas_identifier == NULL ||
os_strlen(bss->nas_identifier) < 1 ||
os_strlen(bss->nas_identifier) > FT_R0KH_ID_MAX_LEN)) {
wpa_printf(MSG_ERROR, "FT (IEEE 802.11r) requires "
"nas_identifier to be configured as a 1..48 octet "
"string");
return -1;
}
#endif /* CONFIG_IEEE80211R_AP */
#ifdef CONFIG_IEEE80211N
if (full_config && conf->ieee80211n &&
conf->hw_mode == HOSTAPD_MODE_IEEE80211B) {
bss->disable_11n = 1;
wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) in 11b mode is not "
"allowed, disabling HT capabilities");
}
if (full_config && conf->ieee80211n &&
bss->ssid.security_policy == SECURITY_STATIC_WEP) {
bss->disable_11n = 1;
wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WEP is not "
"allowed, disabling HT capabilities");
}
if (full_config && conf->ieee80211n && bss->wpa &&
!(bss->wpa_pairwise & WPA_CIPHER_CCMP) &&
!(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
WPA_CIPHER_CCMP_256 | WPA_CIPHER_GCMP_256)))
{
bss->disable_11n = 1;
wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WPA/WPA2 "
"requires CCMP/GCMP to be enabled, disabling HT "
"capabilities");
}
#endif /* CONFIG_IEEE80211N */
#ifdef CONFIG_IEEE80211AC
if (full_config && conf->ieee80211ac &&
bss->ssid.security_policy == SECURITY_STATIC_WEP) {
bss->disable_11ac = 1;
wpa_printf(MSG_ERROR,
"VHT (IEEE 802.11ac) with WEP is not allowed, disabling VHT capabilities");
}
if (full_config && conf->ieee80211ac && bss->wpa &&
!(bss->wpa_pairwise & WPA_CIPHER_CCMP) &&
!(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
WPA_CIPHER_CCMP_256 | WPA_CIPHER_GCMP_256)))
{
bss->disable_11ac = 1;
wpa_printf(MSG_ERROR,
"VHT (IEEE 802.11ac) with WPA/WPA2 requires CCMP/GCMP to be enabled, disabling VHT capabilities");
}
#endif /* CONFIG_IEEE80211AC */
#ifdef CONFIG_WPS
if (full_config && bss->wps_state && bss->ignore_broadcast_ssid) {
wpa_printf(MSG_INFO, "WPS: ignore_broadcast_ssid "
"configuration forced WPS to be disabled");
bss->wps_state = 0;
}
if (full_config && bss->wps_state &&
bss->ssid.wep.keys_set && bss->wpa == 0) {
wpa_printf(MSG_INFO, "WPS: WEP configuration forced WPS to be "
"disabled");
bss->wps_state = 0;
}
if (full_config && bss->wps_state && bss->wpa &&
(!(bss->wpa & 2) ||
!(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
WPA_CIPHER_CCMP_256 |
WPA_CIPHER_GCMP_256)))) {
wpa_printf(MSG_INFO, "WPS: WPA/TKIP configuration without "
"WPA2/CCMP/GCMP forced WPS to be disabled");
bss->wps_state = 0;
}
#endif /* CONFIG_WPS */
#ifdef CONFIG_HS20
if (full_config && bss->hs20 &&
(!(bss->wpa & 2) ||
!(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
WPA_CIPHER_CCMP_256 |
WPA_CIPHER_GCMP_256)))) {
wpa_printf(MSG_ERROR, "HS 2.0: WPA2-Enterprise/CCMP "
"configuration is required for Hotspot 2.0 "
"functionality");
return -1;
}
#endif /* CONFIG_HS20 */
#ifdef CONFIG_MBO
if (full_config && bss->mbo_enabled && (bss->wpa & 2) &&
bss->ieee80211w == NO_MGMT_FRAME_PROTECTION) {
wpa_printf(MSG_ERROR,
"MBO: PMF needs to be enabled whenever using WPA2 with MBO");
return -1;
}
#endif /* CONFIG_MBO */
#ifdef CONFIG_OCV
if (full_config && bss->ieee80211w == NO_MGMT_FRAME_PROTECTION &&
bss->ocv) {
wpa_printf(MSG_ERROR,
"OCV: PMF needs to be enabled whenever using OCV");
return -1;
}
#endif /* CONFIG_OCV */
return 0;
}
static int hostapd_config_check_cw(struct hostapd_config *conf, int queue)
{
int tx_cwmin = conf->tx_queue[queue].cwmin;
int tx_cwmax = conf->tx_queue[queue].cwmax;
int ac_cwmin = conf->wmm_ac_params[queue].cwmin;
int ac_cwmax = conf->wmm_ac_params[queue].cwmax;
if (tx_cwmin > tx_cwmax) {
wpa_printf(MSG_ERROR,
"Invalid TX queue cwMin/cwMax values. cwMin(%d) greater than cwMax(%d)",
tx_cwmin, tx_cwmax);
return -1;
}
if (ac_cwmin > ac_cwmax) {
wpa_printf(MSG_ERROR,
"Invalid WMM AC cwMin/cwMax values. cwMin(%d) greater than cwMax(%d)",
ac_cwmin, ac_cwmax);
return -1;
}
return 0;
}
int hostapd_config_check(struct hostapd_config *conf, int full_config)
{
size_t i;
if (full_config && conf->ieee80211d &&
(!conf->country[0] || !conf->country[1])) {
wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11d without "
"setting the country_code");
return -1;
}
if (full_config && conf->ieee80211h && !conf->ieee80211d) {
wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11h without "
"IEEE 802.11d enabled");
return -1;
}
if (full_config && conf->local_pwr_constraint != -1 &&
!conf->ieee80211d) {
wpa_printf(MSG_ERROR, "Cannot add Power Constraint element without Country element");
return -1;
}
if (full_config && conf->spectrum_mgmt_required &&
conf->local_pwr_constraint == -1) {
wpa_printf(MSG_ERROR, "Cannot set Spectrum Management bit without Country and Power Constraint elements");
return -1;
}
for (i = 0; i < NUM_TX_QUEUES; i++) {
if (hostapd_config_check_cw(conf, i))
return -1;
}
for (i = 0; i < conf->num_bss; i++) {
if (hostapd_config_check_bss(conf->bss[i], conf, full_config))
return -1;
}
return 0;
}
void hostapd_set_security_params(struct hostapd_bss_config *bss,
int full_config)
{
if (bss->individual_wep_key_len == 0) {
/* individual keys are not use; can use key idx0 for
* broadcast keys */
bss->broadcast_key_idx_min = 0;
}
if ((bss->wpa & 2) && bss->rsn_pairwise == 0)
bss->rsn_pairwise = bss->wpa_pairwise;
if (bss->group_cipher)
bss->wpa_group = bss->group_cipher;
else
bss->wpa_group = wpa_select_ap_group_cipher(bss->wpa,
bss->wpa_pairwise,
bss->rsn_pairwise);
if (!bss->wpa_group_rekey_set)
bss->wpa_group_rekey = bss->wpa_group == WPA_CIPHER_TKIP ?
600 : 86400;
if (full_config) {
bss->radius->auth_server = bss->radius->auth_servers;
bss->radius->acct_server = bss->radius->acct_servers;
}
if (bss->wpa && bss->ieee802_1x) {
bss->ssid.security_policy = SECURITY_WPA;
} else if (bss->wpa) {
bss->ssid.security_policy = SECURITY_WPA_PSK;
} else if (bss->ieee802_1x) {
int cipher = WPA_CIPHER_NONE;
bss->ssid.security_policy = SECURITY_IEEE_802_1X;
bss->ssid.wep.default_len = bss->default_wep_key_len;
if (full_config && bss->default_wep_key_len) {
cipher = bss->default_wep_key_len >= 13 ?
WPA_CIPHER_WEP104 : WPA_CIPHER_WEP40;
} else if (full_config && bss->ssid.wep.keys_set) {
if (bss->ssid.wep.len[0] >= 13)
cipher = WPA_CIPHER_WEP104;
else
cipher = WPA_CIPHER_WEP40;
}
bss->wpa_group = cipher;
bss->wpa_pairwise = cipher;
bss->rsn_pairwise = cipher;
if (full_config)
bss->wpa_key_mgmt = WPA_KEY_MGMT_IEEE8021X_NO_WPA;
} else if (bss->ssid.wep.keys_set) {
int cipher = WPA_CIPHER_WEP40;
if (bss->ssid.wep.len[0] >= 13)
cipher = WPA_CIPHER_WEP104;
bss->ssid.security_policy = SECURITY_STATIC_WEP;
bss->wpa_group = cipher;
bss->wpa_pairwise = cipher;
bss->rsn_pairwise = cipher;
if (full_config)
bss->wpa_key_mgmt = WPA_KEY_MGMT_NONE;
} else if (bss->osen) {
bss->ssid.security_policy = SECURITY_OSEN;
bss->wpa_group = WPA_CIPHER_CCMP;
bss->wpa_pairwise = 0;
bss->rsn_pairwise = WPA_CIPHER_CCMP;
} else {
bss->ssid.security_policy = SECURITY_PLAINTEXT;
if (full_config) {
bss->wpa_group = WPA_CIPHER_NONE;
bss->wpa_pairwise = WPA_CIPHER_NONE;
bss->rsn_pairwise = WPA_CIPHER_NONE;
bss->wpa_key_mgmt = WPA_KEY_MGMT_NONE;
}
}
}
int hostapd_sae_pw_id_in_use(struct hostapd_bss_config *conf)
{
int with_id = 0, without_id = 0;
struct sae_password_entry *pw;
if (conf->ssid.wpa_passphrase)
without_id = 1;
for (pw = conf->sae_passwords; pw; pw = pw->next) {
if (pw->identifier)
with_id = 1;
else
without_id = 1;
if (with_id && without_id)
break;
}
if (with_id && !without_id)
return 2;
return with_id;
}