[thirdparty/hostap.git] / src / ap / ap_config.c

/*
 * 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 "radius/radius_client.h"
#include "common/ieee802_11_defs.h"
#include "common/eapol_common.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;
}


void hostapd_config_defaults_bss(struct hostapd_bss_config *bss)
{
	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_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->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;
#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 */

	bss->radius_das_time_window = 300;

	bss->sae_anti_clogging_threshold = 5;
}


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, 3000 / 32, 0 };
	const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */
		{ aCWmin - 2, aCWmin - 1, 2, 1500 / 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;
	}

	bss->radius = os_zalloc(sizeof(*bss->radius));
	if (bss->radius == NULL) {
		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->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;

#ifdef CONFIG_TESTING_OPTIONS
	conf->ignore_probe_probability = 0.0d;
	conf->ignore_auth_probability = 0.0d;
	conf->ignore_assoc_probability = 0.0d;
	conf->ignore_reassoc_probability = 0.0d;
	conf->corrupt_gtk_rekey_mic_probability = 0.0d;
#endif /* CONFIG_TESTING_OPTIONS */

#ifdef CONFIG_ACS
	conf->acs_num_scans = 5;
#endif /* CONFIG_ACS */

	return conf;
}


int hostapd_mac_comp(const void *a, const void *b)
{
	return os_memcmp(a, b, sizeof(macaddr));
}


int hostapd_mac_comp_empty(const void *a)
{
	macaddr empty = { 0 };
	return os_memcmp(a, empty, sizeof(macaddr));
}


static int hostapd_config_read_wpa_psk(const char *fname,
				       struct hostapd_ssid *ssid)
{
	FILE *f;
	char buf[128], *pos;
	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)) {
		line++;

		if (buf[0] == '#')
			continue;
		pos = buf;
		while (*pos != '\0') {
			if (*pos == '\n') {
				*pos = '\0';
				break;
			}
			pos++;
		}
		if (buf[0] == '\0')
			continue;

		if (hwaddr_aton(buf, addr)) {
			wpa_printf(MSG_ERROR, "Invalid MAC address '%s' on "
				   "line %d in '%s'", buf, line, fname);
			ret = -1;
			break;
		}

		psk = os_zalloc(sizeof(*psk));
		if (psk == NULL) {
			wpa_printf(MSG_ERROR, "WPA PSK allocation failed");
			ret = -1;
			break;
		}
		if (is_zero_ether_addr(addr))
			psk->group = 1;
		else
			os_memcpy(psk->addr, addr, ETH_ALEN);

		pos = buf + 17;
		if (*pos == '\0') {
			wpa_printf(MSG_ERROR, "No PSK on line %d in '%s'",
				   line, fname);
			os_free(psk);
			ret = -1;
			break;
		}
		pos++;

		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;
		}

		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;
	}

	if (ssid->wpa_psk_file) {
		if (hostapd_config_read_wpa_psk(ssid->wpa_psk_file,
						&conf->ssid))
			return -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] ||
		    os_memcmp(a->key[i], b->key[i], a->len[i]) != 0)
			return 1;
	return 0;
}


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);
	}
}


static void hostapd_config_free_eap_user(struct hostapd_eap_user *user)
{
	os_free(user->identity);
	os_free(user->password);
	os_free(user);
}


static void hostapd_config_free_wep(struct hostapd_wep_keys *keys)
{
	int i;
	for (i = 0; i < NUM_WEP_KEYS; i++) {
		os_free(keys->key[i]);
		keys->key[i] = NULL;
	}
}


static void hostapd_config_free_bss(struct hostapd_bss_config *conf)
{
	struct hostapd_wpa_psk *psk, *prev;
	struct hostapd_eap_user *user, *prev_user;

	if (conf == NULL)
		return;

	psk = conf->ssid.wpa_psk;
	while (psk) {
		prev = psk;
		psk = psk->next;
		os_free(prev);
	}

	os_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 */

	user = conf->eap_user;
	while (user) {
		prev_user = user;
		user = user->next;
		hostapd_config_free_eap_user(prev_user);
	}
	os_free(conf->eap_user_sqlite);

	os_free(conf->dump_log_name);
	os_free(conf->eap_req_id_text);
	os_free(conf->accept_mac);
	os_free(conf->deny_mac);
	os_free(conf->nas_identifier);
	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->ocsp_stapling_response);
	os_free(conf->dh_file);
	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->test_socket);
	os_free(conf->radius);
	os_free(conf->radius_das_shared_secret);
	hostapd_config_free_vlan(conf);
	os_free(conf->time_zone);

#ifdef CONFIG_IEEE80211R
	{
		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 */

#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);
	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);
	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->nai_realm_data);
	os_free(conf->network_auth_type);
	os_free(conf->anqp_3gpp_cell_net);
	os_free(conf->domain_name);

#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);
#endif /* CONFIG_HS20 */

	wpabuf_free(conf->vendor_elements);

	os_free(conf->sae_groups);

	os_free(conf->server_id);
}


/**
 * 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);
}


/**
 * 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 = 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_id_valid(struct hostapd_vlan *vlan, int vlan_id)
{
	struct hostapd_vlan *v = vlan;
	while (v) {
		if (v->vlan_id == vlan_id || 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 *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 || os_memcmp(psk->addr, addr, ETH_ALEN) == 0))
			return psk->psk;

		if (psk->psk == prev_psk)
			next_ok = 1;
	}

	return NULL;
}
Commit	Line	Data
6fc6879b	1	/*
41d719d6	2	* hostapd / Configuration helper functions
af35e7af	3	* Copyright (c) 2003-2012, Jouni Malinen <j@w1.fi>
6fc6879b	4	*
0f3d578e JM	5	* This software may be distributed under the terms of the BSD license.
0f3d578e JM	6	* See README for more details.
6fc6879b JM	7	*/
6fc6879b JM	8
6226e38d	9	#include "utils/includes.h"
6fc6879b	10
6226e38d	11	#include "utils/common.h"
03da66bd	12	#include "crypto/sha1.h"
6fc6879b	13	#include "radius/radius_client.h"
df84268a	14	#include "common/ieee802_11_defs.h"
41d719d6	15	#include "common/eapol_common.h"
03da66bd JM	16	#include "eap_common/eap_wsc_common.h"
03da66bd JM	17	#include "eap_server/eap.h"
6226e38d	18	#include "wpa_auth.h"
97234b50	19	#include "sta_info.h"
6226e38d	20	#include "ap_config.h"
6fc6879b JM	21
6fc6879b JM	22
6fc6879b JM	23	static void hostapd_config_free_vlan(struct hostapd_bss_config *bss)
	24	{
	25	struct hostapd_vlan vlan, prev;
	26
	27	vlan = bss->vlan;
	28	prev = NULL;
	29	while (vlan) {
	30	prev = vlan;
	31	vlan = vlan->next;
	32	os_free(prev);
	33	}
	34
	35	bss->vlan = NULL;
	36	}
	37
	38
41d719d6	39	void hostapd_config_defaults_bss(struct hostapd_bss_config *bss)
6fc6879b JM	40	{
	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;
	45
	46	bss->auth_algs = WPA_AUTH_ALG_OPEN \| WPA_AUTH_ALG_SHARED;
	47
	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;
	53
	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;
	60
	61	bss->max_num_sta = MAX_STA_COUNT;
	62
	63	bss->dtim_period = 2;
	64
	65	bss->radius_server_auth_port = 1812;
	66	bss->ap_max_inactivity = AP_MAX_INACTIVITY;
	67	bss->eapol_version = EAPOL_VERSION;
b0194fe0 JM	68
b0194fe0 JM	69	bss->max_listen_interval = 65535;
5d22a1d5	70
df684d82 DH	71	bss->pwd_group = 19; /* ECC: GF(p=256) */
df684d82 DH	72
5d22a1d5	73	#ifdef CONFIG_IEEE80211W
45c94154 JM	74	bss->assoc_sa_query_max_timeout = 1000;
45c94154 JM	75	bss->assoc_sa_query_retry_timeout = 201;
5d22a1d5	76	#endif /* CONFIG_IEEE80211W */
1e5839e0	77	#ifdef EAP_SERVER_FAST
378eae5e JM	78	/* both anonymous and authenticated provisioning */
378eae5e JM	79	bss->eap_fast_prov = 3;
a11c90a6 JM	80	bss->pac_key_lifetime = 7 * 24 * 60 * 60;
a11c90a6 JM	81	bss->pac_key_refresh_time = 1 * 24 * 60 * 60;
1e5839e0	82	#endif /* EAP_SERVER_FAST */
d2da2249 JB	83
	84	/* Set to -1 as defaults depends on HT in setup */
	85	bss->wmm_enabled = -1;
d7956add SP	86
	87	#ifdef CONFIG_IEEE80211R
	88	bss->ft_over_ds = 1;
	89	#endif /* CONFIG_IEEE80211R */
bde7ba6c JM	90
bde7ba6c JM	91	bss->radius_das_time_window = 300;
d136c376 JM	92
d136c376 JM	93	bss->sae_anti_clogging_threshold = 5;
6fc6879b JM	94	}
	95
	96
89111f3b	97	struct hostapd_config * hostapd_config_defaults(void)
6fc6879b	98	{
d2da2249 JB	99	#define ecw2cw(ecw) ((1 << (ecw)) - 1)
d2da2249 JB	100
6fc6879b JM	101	struct hostapd_config *conf;
6fc6879b JM	102	struct hostapd_bss_config *bss;
594cf8b9	103	const int aCWmin = 4, aCWmax = 10;
3ae0800c	104	const struct hostapd_wmm_ac_params ac_bk =
6fc6879b	105	{ aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */
3ae0800c	106	const struct hostapd_wmm_ac_params ac_be =
6fc6879b	107	{ aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */
3ae0800c	108	const struct hostapd_wmm_ac_params ac_vi = /* video traffic */
623ecdd5	109	{ aCWmin - 1, aCWmin, 2, 3000 / 32, 0 };
3ae0800c	110	const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */
623ecdd5	111	{ aCWmin - 2, aCWmin - 1, 2, 1500 / 32, 0 };
d2da2249 JB	112	const struct hostapd_tx_queue_params txq_bk =
	113	{ 7, ecw2cw(aCWmin), ecw2cw(aCWmax), 0 };
	114	const struct hostapd_tx_queue_params txq_be =
	115	{ 3, ecw2cw(aCWmin), 4 * (ecw2cw(aCWmin) + 1) - 1, 0};
	116	const struct hostapd_tx_queue_params txq_vi =
	117	{ 1, (ecw2cw(aCWmin) + 1) / 2 - 1, ecw2cw(aCWmin), 30};
	118	const struct hostapd_tx_queue_params txq_vo =
	119	{ 1, (ecw2cw(aCWmin) + 1) / 4 - 1,
	120	(ecw2cw(aCWmin) + 1) / 2 - 1, 15};
	121
	122	#undef ecw2cw
6fc6879b JM	123
	124	conf = os_zalloc(sizeof(*conf));
	125	bss = os_zalloc(sizeof(*bss));
	126	if (conf == NULL \|\| bss == NULL) {
10656fc2 JM	127	wpa_printf(MSG_ERROR, "Failed to allocate memory for "
10656fc2 JM	128	"configuration data.");
6fc6879b JM	129	os_free(conf);
	130	os_free(bss);
	131	return NULL;
	132	}
	133
6fc6879b JM	134	bss->radius = os_zalloc(sizeof(*bss->radius));
	135	if (bss->radius == NULL) {
	136	os_free(conf);
	137	os_free(bss);
	138	return NULL;
	139	}
	140
	141	hostapd_config_defaults_bss(bss);
	142
	143	conf->num_bss = 1;
	144	conf->bss = bss;
	145
	146	conf->beacon_int = 100;
	147	conf->rts_threshold = -1; /* use driver default: 2347 */
	148	conf->fragm_threshold = -1; /* user driver default: 2346 */
	149	conf->send_probe_response = 1;
6fc6879b	150
3ae0800c JM	151	conf->wmm_ac_params[0] = ac_be;
	152	conf->wmm_ac_params[1] = ac_bk;
	153	conf->wmm_ac_params[2] = ac_vi;
	154	conf->wmm_ac_params[3] = ac_vo;
6fc6879b	155
d2da2249 JB	156	conf->tx_queue[0] = txq_vo;
	157	conf->tx_queue[1] = txq_vi;
	158	conf->tx_queue[2] = txq_be;
	159	conf->tx_queue[3] = txq_bk;
	160
fc14f567	161	conf->ht_capab = HT_CAP_INFO_SMPS_DISABLED;
de9289c8	162
f1b44874 SE	163	conf->ap_table_max_size = 255;
	164	conf->ap_table_expiration_time = 60;
	165
c2aff6b1 JB	166	#ifdef CONFIG_TESTING_OPTIONS
	167	conf->ignore_probe_probability = 0.0d;
	168	conf->ignore_auth_probability = 0.0d;
	169	conf->ignore_assoc_probability = 0.0d;
	170	conf->ignore_reassoc_probability = 0.0d;
7af092a0	171	conf->corrupt_gtk_rekey_mic_probability = 0.0d;
c2aff6b1 JB	172	#endif /* CONFIG_TESTING_OPTIONS */
c2aff6b1 JB	173
50f4f2a0 MK	174	#ifdef CONFIG_ACS
	175	conf->acs_num_scans = 5;
	176	#endif /* CONFIG_ACS */
	177
6fc6879b JM	178	return conf;
	179	}
	180
	181
	182	int hostapd_mac_comp(const void a, const void b)
	183	{
	184	return os_memcmp(a, b, sizeof(macaddr));
	185	}
	186
	187
	188	int hostapd_mac_comp_empty(const void *a)
	189	{
	190	macaddr empty = { 0 };
	191	return os_memcmp(a, empty, sizeof(macaddr));
	192	}
	193
	194
6fc6879b JM	195	static int hostapd_config_read_wpa_psk(const char *fname,
	196	struct hostapd_ssid *ssid)
	197	{
	198	FILE *f;
	199	char buf[128], *pos;
	200	int line = 0, ret = 0, len, ok;
	201	u8 addr[ETH_ALEN];
	202	struct hostapd_wpa_psk *psk;
	203
	204	if (!fname)
	205	return 0;
	206
	207	f = fopen(fname, "r");
	208	if (!f) {
10656fc2	209	wpa_printf(MSG_ERROR, "WPA PSK file '%s' not found.", fname);
6fc6879b JM	210	return -1;
	211	}
	212
	213	while (fgets(buf, sizeof(buf), f)) {
	214	line++;
	215
	216	if (buf[0] == '#')
	217	continue;
	218	pos = buf;
	219	while (*pos != '\0') {
	220	if (*pos == '\n') {
	221	*pos = '\0';
	222	break;
	223	}
	224	pos++;
	225	}
	226	if (buf[0] == '\0')
	227	continue;
	228
	229	if (hwaddr_aton(buf, addr)) {
10656fc2 JM	230	wpa_printf(MSG_ERROR, "Invalid MAC address '%s' on "
10656fc2 JM	231	"line %d in '%s'", buf, line, fname);
6fc6879b JM	232	ret = -1;
	233	break;
	234	}
	235
	236	psk = os_zalloc(sizeof(*psk));
	237	if (psk == NULL) {
10656fc2	238	wpa_printf(MSG_ERROR, "WPA PSK allocation failed");
6fc6879b JM	239	ret = -1;
	240	break;
	241	}
a8e16edc	242	if (is_zero_ether_addr(addr))
6fc6879b JM	243	psk->group = 1;
	244	else
	245	os_memcpy(psk->addr, addr, ETH_ALEN);
	246
	247	pos = buf + 17;
5306f43f	248	if (*pos == '\0') {
10656fc2 JM	249	wpa_printf(MSG_ERROR, "No PSK on line %d in '%s'",
10656fc2 JM	250	line, fname);
6fc6879b JM	251	os_free(psk);
	252	ret = -1;
	253	break;
	254	}
	255	pos++;
	256
	257	ok = 0;
	258	len = os_strlen(pos);
	259	if (len == 64 && hexstr2bin(pos, psk->psk, PMK_LEN) == 0)
	260	ok = 1;
	261	else if (len >= 8 && len < 64) {
	262	pbkdf2_sha1(pos, ssid->ssid, ssid->ssid_len,
	263	4096, psk->psk, PMK_LEN);
	264	ok = 1;
	265	}
	266	if (!ok) {
10656fc2 JM	267	wpa_printf(MSG_ERROR, "Invalid PSK '%s' on line %d in "
10656fc2 JM	268	"'%s'", pos, line, fname);
6fc6879b JM	269	os_free(psk);
	270	ret = -1;
	271	break;
	272	}
	273
	274	psk->next = ssid->wpa_psk;
	275	ssid->wpa_psk = psk;
	276	}
	277
	278	fclose(f);
	279
	280	return ret;
	281	}
	282
	283
0ae687bd JM	284	static int hostapd_derive_psk(struct hostapd_ssid *ssid)
	285	{
	286	ssid->wpa_psk = os_zalloc(sizeof(struct hostapd_wpa_psk));
	287	if (ssid->wpa_psk == NULL) {
	288	wpa_printf(MSG_ERROR, "Unable to alloc space for PSK");
	289	return -1;
	290	}
	291	wpa_hexdump_ascii(MSG_DEBUG, "SSID",
	292	(u8 *) ssid->ssid, ssid->ssid_len);
	293	wpa_hexdump_ascii_key(MSG_DEBUG, "PSK (ASCII passphrase)",
	294	(u8 *) ssid->wpa_passphrase,
	295	os_strlen(ssid->wpa_passphrase));
	296	pbkdf2_sha1(ssid->wpa_passphrase,
	297	ssid->ssid, ssid->ssid_len,
	298	4096, ssid->wpa_psk->psk, PMK_LEN);
	299	wpa_hexdump_key(MSG_DEBUG, "PSK (from passphrase)",
	300	ssid->wpa_psk->psk, PMK_LEN);
	301	return 0;
	302	}
	303
	304
6fc6879b JM	305	int hostapd_setup_wpa_psk(struct hostapd_bss_config *conf)
	306	{
	307	struct hostapd_ssid *ssid = &conf->ssid;
	308
	309	if (ssid->wpa_passphrase != NULL) {
	310	if (ssid->wpa_psk != NULL) {
0ae687bd JM	311	wpa_printf(MSG_DEBUG, "Using pre-configured WPA PSK "
	312	"instead of passphrase");
	313	} else {
	314	wpa_printf(MSG_DEBUG, "Deriving WPA PSK based on "
	315	"passphrase");
	316	if (hostapd_derive_psk(ssid) < 0)
	317	return -1;
6fc6879b	318	}
6fc6879b	319	ssid->wpa_psk->group = 1;
6fc6879b JM	320	}
	321
	322	if (ssid->wpa_psk_file) {
	323	if (hostapd_config_read_wpa_psk(ssid->wpa_psk_file,
	324	&conf->ssid))
	325	return -1;
	326	}
	327
	328	return 0;
	329	}
	330
	331
6fc6879b JM	332	int hostapd_wep_key_cmp(struct hostapd_wep_keys a, struct hostapd_wep_keys b)
	333	{
	334	int i;
	335
	336	if (a->idx != b->idx \|\| a->default_len != b->default_len)
	337	return 1;
	338	for (i = 0; i < NUM_WEP_KEYS; i++)
	339	if (a->len[i] != b->len[i] \|\|
	340	os_memcmp(a->key[i], b->key[i], a->len[i]) != 0)
	341	return 1;
	342	return 0;
	343	}
	344
	345
	346	static void hostapd_config_free_radius(struct hostapd_radius_server *servers,
	347	int num_servers)
	348	{
	349	int i;
	350
	351	for (i = 0; i < num_servers; i++) {
	352	os_free(servers[i].shared_secret);
	353	}
	354	os_free(servers);
	355	}
	356
	357
af35e7af JM	358	struct hostapd_radius_attr *
	359	hostapd_config_get_radius_attr(struct hostapd_radius_attr *attr, u8 type)
	360	{
	361	for (; attr; attr = attr->next) {
	362	if (attr->type == type)
	363	return attr;
	364	}
	365	return NULL;
	366	}
	367
	368
	369	static void hostapd_config_free_radius_attr(struct hostapd_radius_attr *attr)
	370	{
	371	struct hostapd_radius_attr *prev;
	372
	373	while (attr) {
	374	prev = attr;
	375	attr = attr->next;
	376	wpabuf_free(prev->val);
	377	os_free(prev);
	378	}
	379	}
	380
	381
6fc6879b JM	382	static void hostapd_config_free_eap_user(struct hostapd_eap_user *user)
	383	{
	384	os_free(user->identity);
	385	os_free(user->password);
	386	os_free(user);
	387	}
	388
	389
	390	static void hostapd_config_free_wep(struct hostapd_wep_keys *keys)
	391	{
	392	int i;
	393	for (i = 0; i < NUM_WEP_KEYS; i++) {
	394	os_free(keys->key[i]);
	395	keys->key[i] = NULL;
	396	}
	397	}
	398
	399
	400	static void hostapd_config_free_bss(struct hostapd_bss_config *conf)
	401	{
	402	struct hostapd_wpa_psk psk, prev;
	403	struct hostapd_eap_user user, prev_user;
	404
	405	if (conf == NULL)
	406	return;
	407
	408	psk = conf->ssid.wpa_psk;
	409	while (psk) {
	410	prev = psk;
	411	psk = psk->next;
	412	os_free(prev);
	413	}
	414
	415	os_free(conf->ssid.wpa_passphrase);
	416	os_free(conf->ssid.wpa_psk_file);
43dd46b3	417	hostapd_config_free_wep(&conf->ssid.wep);
6fc6879b JM	418	#ifdef CONFIG_FULL_DYNAMIC_VLAN
	419	os_free(conf->ssid.vlan_tagged_interface);
	420	#endif /* CONFIG_FULL_DYNAMIC_VLAN */
	421
	422	user = conf->eap_user;
	423	while (user) {
	424	prev_user = user;
	425	user = user->next;
	426	hostapd_config_free_eap_user(prev_user);
	427	}
ee431d77	428	os_free(conf->eap_user_sqlite);
6fc6879b JM	429
	430	os_free(conf->dump_log_name);
	431	os_free(conf->eap_req_id_text);
	432	os_free(conf->accept_mac);
	433	os_free(conf->deny_mac);
	434	os_free(conf->nas_identifier);
	435	hostapd_config_free_radius(conf->radius->auth_servers,
	436	conf->radius->num_auth_servers);
	437	hostapd_config_free_radius(conf->radius->acct_servers,
	438	conf->radius->num_acct_servers);
af35e7af JM	439	hostapd_config_free_radius_attr(conf->radius_auth_req_attr);
af35e7af JM	440	hostapd_config_free_radius_attr(conf->radius_acct_req_attr);
6fc6879b JM	441	os_free(conf->rsn_preauth_interfaces);
	442	os_free(conf->ctrl_interface);
	443	os_free(conf->ca_cert);
	444	os_free(conf->server_cert);
	445	os_free(conf->private_key);
	446	os_free(conf->private_key_passwd);
080585c0	447	os_free(conf->ocsp_stapling_response);
6fc6879b JM	448	os_free(conf->dh_file);
	449	os_free(conf->pac_opaque_encr_key);
	450	os_free(conf->eap_fast_a_id);
2d867244	451	os_free(conf->eap_fast_a_id_info);
6fc6879b JM	452	os_free(conf->eap_sim_db);
	453	os_free(conf->radius_server_clients);
	454	os_free(conf->test_socket);
	455	os_free(conf->radius);
b031338c	456	os_free(conf->radius_das_shared_secret);
6fc6879b	457	hostapd_config_free_vlan(conf);
39b97072 JM	458	os_free(conf->time_zone);
39b97072 JM	459
6fc6879b JM	460	#ifdef CONFIG_IEEE80211R
	461	{
	462	struct ft_remote_r0kh r0kh, r0kh_prev;
	463	struct ft_remote_r1kh r1kh, r1kh_prev;
	464
	465	r0kh = conf->r0kh_list;
	466	conf->r0kh_list = NULL;
	467	while (r0kh) {
	468	r0kh_prev = r0kh;
	469	r0kh = r0kh->next;
	470	os_free(r0kh_prev);
	471	}
	472
	473	r1kh = conf->r1kh_list;
	474	conf->r1kh_list = NULL;
	475	while (r1kh) {
	476	r1kh_prev = r1kh;
	477	r1kh = r1kh->next;
	478	os_free(r1kh_prev);
	479	}
	480	}
	481	#endif /* CONFIG_IEEE80211R */
ad08c363 JM	482
	483	#ifdef CONFIG_WPS
	484	os_free(conf->wps_pin_requests);
	485	os_free(conf->device_name);
	486	os_free(conf->manufacturer);
	487	os_free(conf->model_name);
	488	os_free(conf->model_number);
	489	os_free(conf->serial_number);
ad08c363 JM	490	os_free(conf->config_methods);
ad08c363 JM	491	os_free(conf->ap_pin);
62966253	492	os_free(conf->extra_cred);
4c29cae9	493	os_free(conf->ap_settings);
f620268f JM	494	os_free(conf->upnp_iface);
	495	os_free(conf->friendly_name);
	496	os_free(conf->manufacturer_url);
	497	os_free(conf->model_description);
	498	os_free(conf->model_url);
	499	os_free(conf->upc);
ffdaa05a JM	500	wpabuf_free(conf->wps_nfc_dh_pubkey);
	501	wpabuf_free(conf->wps_nfc_dh_privkey);
	502	wpabuf_free(conf->wps_nfc_dev_pw);
ad08c363	503	#endif /* CONFIG_WPS */
4b2a77ab JM	504
4b2a77ab JM	505	os_free(conf->roaming_consortium);
648cc711	506	os_free(conf->venue_name);
8047b186	507	os_free(conf->nai_realm_data);
550a3958	508	os_free(conf->network_auth_type);
7515adb2	509	os_free(conf->anqp_3gpp_cell_net);
26fac8b6	510	os_free(conf->domain_name);
505a3694 JM	511
	512	#ifdef CONFIG_RADIUS_TEST
	513	os_free(conf->dump_msk_file);
	514	#endif /* CONFIG_RADIUS_TEST */
df5934f1 JK	515
df5934f1 JK	516	#ifdef CONFIG_HS20
a9277e85	517	os_free(conf->hs20_oper_friendly_name);
4065a309	518	os_free(conf->hs20_wan_metrics);
5ccc54aa	519	os_free(conf->hs20_connection_capability);
df5934f1 JK	520	os_free(conf->hs20_operating_class);
df5934f1 JK	521	#endif /* CONFIG_HS20 */
b52f084c JM	522
b52f084c JM	523	wpabuf_free(conf->vendor_elements);
625f202a JM	524
625f202a JM	525	os_free(conf->sae_groups);
67fe933d JM	526
67fe933d JM	527	os_free(conf->server_id);
6fc6879b JM	528	}
	529
	530
1c6e69cc JM	531	/**
	532	* hostapd_config_free - Free hostapd configuration
	533	* @conf: Configuration data from hostapd_config_read().
	534	*/
6fc6879b JM	535	void hostapd_config_free(struct hostapd_config *conf)
	536	{
	537	size_t i;
	538
	539	if (conf == NULL)
	540	return;
	541
	542	for (i = 0; i < conf->num_bss; i++)
	543	hostapd_config_free_bss(&conf->bss[i]);
	544	os_free(conf->bss);
79d6c85f JM	545	os_free(conf->supported_rates);
79d6c85f JM	546	os_free(conf->basic_rates);
6fc6879b JM	547
	548	os_free(conf);
	549	}
	550
	551
1c6e69cc JM	552	/**
	553	* hostapd_maclist_found - Find a MAC address from a list
	554	* @list: MAC address list
	555	* @num_entries: Number of addresses in the list
	556	* @addr: Address to search for
	557	* @vlan_id: Buffer for returning VLAN ID or %NULL if not needed
	558	* Returns: 1 if address is in the list or 0 if not.
	559	*
	560	* Perform a binary search for given MAC address from a pre-sorted list.
	561	*/
271d2830 JM	562	int hostapd_maclist_found(struct mac_acl_entry *list, int num_entries,
271d2830 JM	563	const u8 addr, int vlan_id)
6fc6879b JM	564	{
	565	int start, end, middle, res;
	566
	567	start = 0;
	568	end = num_entries - 1;
	569
	570	while (start <= end) {
	571	middle = (start + end) / 2;
271d2830 JM	572	res = os_memcmp(list[middle].addr, addr, ETH_ALEN);
	573	if (res == 0) {
	574	if (vlan_id)
	575	*vlan_id = list[middle].vlan_id;
6fc6879b	576	return 1;
271d2830	577	}
6fc6879b JM	578	if (res < 0)
	579	start = middle + 1;
	580	else
	581	end = middle - 1;
	582	}
	583
	584	return 0;
	585	}
	586
	587
	588	int hostapd_rate_found(int *list, int rate)
	589	{
	590	int i;
	591
	592	if (list == NULL)
	593	return 0;
	594
	595	for (i = 0; list[i] >= 0; i++)
	596	if (list[i] == rate)
	597	return 1;
	598
	599	return 0;
	600	}
	601
	602
80ebfd95	603	int hostapd_vlan_id_valid(struct hostapd_vlan *vlan, int vlan_id)
6fc6879b JM	604	{
	605	struct hostapd_vlan *v = vlan;
	606	while (v) {
	607	if (v->vlan_id == vlan_id \|\| v->vlan_id == VLAN_ID_WILDCARD)
80ebfd95 MB	608	return 1;
	609	v = v->next;
	610	}
	611	return 0;
	612	}
	613
	614
	615	const char * hostapd_get_vlan_id_ifname(struct hostapd_vlan *vlan, int vlan_id)
	616	{
	617	struct hostapd_vlan *v = vlan;
	618	while (v) {
	619	if (v->vlan_id == vlan_id)
6fc6879b JM	620	return v->ifname;
	621	v = v->next;
	622	}
	623	return NULL;
	624	}
	625
	626
	627	const u8 * hostapd_get_psk(const struct hostapd_bss_config *conf,
	628	const u8 addr, const u8 prev_psk)
	629	{
	630	struct hostapd_wpa_psk *psk;
	631	int next_ok = prev_psk == NULL;
	632
	633	for (psk = conf->ssid.wpa_psk; psk != NULL; psk = psk->next) {
	634	if (next_ok &&
	635	(psk->group \|\| os_memcmp(psk->addr, addr, ETH_ALEN) == 0))
	636	return psk->psk;
	637
	638	if (psk->psk == prev_psk)
	639	next_ok = 1;
	640	}
	641
	642	return NULL;
	643	}