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

/*
 * hostapd / Configuration helper functions
 * Copyright (c) 2003-2009, Jouni Malinen <j@w1.fi>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * Alternatively, this software may be distributed under the terms of BSD
 * license.
 *
 * See README and COPYING 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;

#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 */
}


struct hostapd_config * hostapd_config_defaults(void)
{
	struct hostapd_config *conf;
	struct hostapd_bss_config *bss;
	int i;
	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, 1 };
	const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */
		{ aCWmin - 2, aCWmin - 1, 2, 1500 / 32, 1 };

	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;

	for (i = 0; i < NUM_TX_QUEUES; i++)
		conf->tx_queue[i].aifs = -1; /* use hw default */

	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->ht_capab = HT_CAP_INFO_SMPS_DISABLED;

	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);
}


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);
#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->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);
	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->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);
	hostapd_config_free_vlan(conf);
	if (conf->ssid.dyn_vlan_keys) {
		struct hostapd_ssid *ssid = &conf->ssid;
		size_t i;
		for (i = 0; i <= ssid->max_dyn_vlan_keys; i++) {
			if (ssid->dyn_vlan_keys[i] == NULL)
				continue;
			hostapd_config_free_wep(ssid->dyn_vlan_keys[i]);
			os_free(ssid->dyn_vlan_keys[i]);
		}
		os_free(ssid->dyn_vlan_keys);
		ssid->dyn_vlan_keys = NULL;
	}

#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->device_type);
	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);
#endif /* CONFIG_WPS */
}


/**
 * 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;
}


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 || v->vlan_id == VLAN_ID_WILDCARD)
			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;
}


const struct hostapd_eap_user *
hostapd_get_eap_user(const struct hostapd_bss_config *conf, const u8 *identity,
		     size_t identity_len, int phase2)
{
	struct hostapd_eap_user *user = conf->eap_user;

#ifdef CONFIG_WPS
	if (conf->wps_state && identity_len == WSC_ID_ENROLLEE_LEN &&
	    os_memcmp(identity, WSC_ID_ENROLLEE, WSC_ID_ENROLLEE_LEN) == 0) {
		static struct hostapd_eap_user wsc_enrollee;
		os_memset(&wsc_enrollee, 0, sizeof(wsc_enrollee));
		wsc_enrollee.methods[0].method = eap_server_get_type(
			"WSC", &wsc_enrollee.methods[0].vendor);
		return &wsc_enrollee;
	}

	if (conf->wps_state && conf->ap_pin &&
	    identity_len == WSC_ID_REGISTRAR_LEN &&
	    os_memcmp(identity, WSC_ID_REGISTRAR, WSC_ID_REGISTRAR_LEN) == 0) {
		static struct hostapd_eap_user wsc_registrar;
		os_memset(&wsc_registrar, 0, sizeof(wsc_registrar));
		wsc_registrar.methods[0].method = eap_server_get_type(
			"WSC", &wsc_registrar.methods[0].vendor);
		wsc_registrar.password = (u8 *) conf->ap_pin;
		wsc_registrar.password_len = os_strlen(conf->ap_pin);
		return &wsc_registrar;
	}
#endif /* CONFIG_WPS */

	while (user) {
		if (!phase2 && user->identity == NULL) {
			/* Wildcard match */
			break;
		}

		if (user->phase2 == !!phase2 && user->wildcard_prefix &&
		    identity_len >= user->identity_len &&
		    os_memcmp(user->identity, identity, user->identity_len) ==
		    0) {
			/* Wildcard prefix match */
			break;
		}

		if (user->phase2 == !!phase2 &&
		    user->identity_len == identity_len &&
		    os_memcmp(user->identity, identity, identity_len) == 0)
			break;
		user = user->next;
	}

	return user;
}
Commit	Line	Data
6fc6879b	1	/*
41d719d6	2	* hostapd / Configuration helper functions
eb53b752	3	* Copyright (c) 2003-2009, Jouni Malinen <j@w1.fi>
6fc6879b JM	4	*
	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.
	8	*
	9	* Alternatively, this software may be distributed under the terms of BSD
	10	* license.
	11	*
	12	* See README and COPYING for more details.
	13	*/
	14
6226e38d	15	#include "utils/includes.h"
6fc6879b	16
6226e38d	17	#include "utils/common.h"
03da66bd	18	#include "crypto/sha1.h"
6fc6879b	19	#include "radius/radius_client.h"
df84268a	20	#include "common/ieee802_11_defs.h"
41d719d6	21	#include "common/eapol_common.h"
03da66bd JM	22	#include "eap_common/eap_wsc_common.h"
03da66bd JM	23	#include "eap_server/eap.h"
6226e38d	24	#include "wpa_auth.h"
97234b50	25	#include "sta_info.h"
6226e38d	26	#include "ap_config.h"
6fc6879b JM	27
6fc6879b JM	28
6fc6879b JM	29	static void hostapd_config_free_vlan(struct hostapd_bss_config *bss)
	30	{
	31	struct hostapd_vlan vlan, prev;
	32
	33	vlan = bss->vlan;
	34	prev = NULL;
	35	while (vlan) {
	36	prev = vlan;
	37	vlan = vlan->next;
	38	os_free(prev);
	39	}
	40
	41	bss->vlan = NULL;
	42	}
	43
	44
41d719d6	45	void hostapd_config_defaults_bss(struct hostapd_bss_config *bss)
6fc6879b JM	46	{
	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;
	51
	52	bss->auth_algs = WPA_AUTH_ALG_OPEN \| WPA_AUTH_ALG_SHARED;
	53
	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;
	59
	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;
	66
	67	bss->max_num_sta = MAX_STA_COUNT;
	68
	69	bss->dtim_period = 2;
	70
	71	bss->radius_server_auth_port = 1812;
	72	bss->ap_max_inactivity = AP_MAX_INACTIVITY;
	73	bss->eapol_version = EAPOL_VERSION;
b0194fe0 JM	74
b0194fe0 JM	75	bss->max_listen_interval = 65535;
5d22a1d5 JM	76
5d22a1d5 JM	77	#ifdef CONFIG_IEEE80211W
45c94154 JM	78	bss->assoc_sa_query_max_timeout = 1000;
45c94154 JM	79	bss->assoc_sa_query_retry_timeout = 201;
5d22a1d5	80	#endif /* CONFIG_IEEE80211W */
1e5839e0	81	#ifdef EAP_SERVER_FAST
378eae5e JM	82	/* both anonymous and authenticated provisioning */
378eae5e JM	83	bss->eap_fast_prov = 3;
a11c90a6 JM	84	bss->pac_key_lifetime = 7 * 24 * 60 * 60;
a11c90a6 JM	85	bss->pac_key_refresh_time = 1 * 24 * 60 * 60;
1e5839e0	86	#endif /* EAP_SERVER_FAST */
6fc6879b JM	87	}
	88
	89
89111f3b	90	struct hostapd_config * hostapd_config_defaults(void)
6fc6879b JM	91	{
	92	struct hostapd_config *conf;
	93	struct hostapd_bss_config *bss;
	94	int i;
594cf8b9	95	const int aCWmin = 4, aCWmax = 10;
3ae0800c	96	const struct hostapd_wmm_ac_params ac_bk =
6fc6879b	97	{ aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */
3ae0800c	98	const struct hostapd_wmm_ac_params ac_be =
6fc6879b	99	{ aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */
3ae0800c	100	const struct hostapd_wmm_ac_params ac_vi = /* video traffic */
594cf8b9	101	{ aCWmin - 1, aCWmin, 2, 3000 / 32, 1 };
3ae0800c	102	const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */
594cf8b9	103	{ aCWmin - 2, aCWmin - 1, 2, 1500 / 32, 1 };
6fc6879b JM	104
	105	conf = os_zalloc(sizeof(*conf));
	106	bss = os_zalloc(sizeof(*bss));
	107	if (conf == NULL \|\| bss == NULL) {
10656fc2 JM	108	wpa_printf(MSG_ERROR, "Failed to allocate memory for "
10656fc2 JM	109	"configuration data.");
6fc6879b JM	110	os_free(conf);
	111	os_free(bss);
	112	return NULL;
	113	}
	114
6fc6879b JM	115	bss->radius = os_zalloc(sizeof(*bss->radius));
	116	if (bss->radius == NULL) {
	117	os_free(conf);
	118	os_free(bss);
	119	return NULL;
	120	}
	121
	122	hostapd_config_defaults_bss(bss);
	123
	124	conf->num_bss = 1;
	125	conf->bss = bss;
	126
	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;
6fc6879b	131
6fc6879b JM	132	for (i = 0; i < NUM_TX_QUEUES; i++)
	133	conf->tx_queue[i].aifs = -1; /* use hw default */
	134
3ae0800c JM	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;
6fc6879b	139
fc14f567	140	conf->ht_capab = HT_CAP_INFO_SMPS_DISABLED;
de9289c8	141
6fc6879b JM	142	return conf;
	143	}
	144
	145
	146	int hostapd_mac_comp(const void a, const void b)
	147	{
	148	return os_memcmp(a, b, sizeof(macaddr));
	149	}
	150
	151
	152	int hostapd_mac_comp_empty(const void *a)
	153	{
	154	macaddr empty = { 0 };
	155	return os_memcmp(a, empty, sizeof(macaddr));
	156	}
	157
	158
6fc6879b JM	159	static int hostapd_config_read_wpa_psk(const char *fname,
	160	struct hostapd_ssid *ssid)
	161	{
	162	FILE *f;
	163	char buf[128], *pos;
	164	int line = 0, ret = 0, len, ok;
	165	u8 addr[ETH_ALEN];
	166	struct hostapd_wpa_psk *psk;
	167
	168	if (!fname)
	169	return 0;
	170
	171	f = fopen(fname, "r");
	172	if (!f) {
10656fc2	173	wpa_printf(MSG_ERROR, "WPA PSK file '%s' not found.", fname);
6fc6879b JM	174	return -1;
	175	}
	176
	177	while (fgets(buf, sizeof(buf), f)) {
	178	line++;
	179
	180	if (buf[0] == '#')
	181	continue;
	182	pos = buf;
	183	while (*pos != '\0') {
	184	if (*pos == '\n') {
	185	*pos = '\0';
	186	break;
	187	}
	188	pos++;
	189	}
	190	if (buf[0] == '\0')
	191	continue;
	192
	193	if (hwaddr_aton(buf, addr)) {
10656fc2 JM	194	wpa_printf(MSG_ERROR, "Invalid MAC address '%s' on "
10656fc2 JM	195	"line %d in '%s'", buf, line, fname);
6fc6879b JM	196	ret = -1;
	197	break;
	198	}
	199
	200	psk = os_zalloc(sizeof(*psk));
	201	if (psk == NULL) {
10656fc2	202	wpa_printf(MSG_ERROR, "WPA PSK allocation failed");
6fc6879b JM	203	ret = -1;
	204	break;
	205	}
a8e16edc	206	if (is_zero_ether_addr(addr))
6fc6879b JM	207	psk->group = 1;
	208	else
	209	os_memcpy(psk->addr, addr, ETH_ALEN);
	210
	211	pos = buf + 17;
5306f43f	212	if (*pos == '\0') {
10656fc2 JM	213	wpa_printf(MSG_ERROR, "No PSK on line %d in '%s'",
10656fc2 JM	214	line, fname);
6fc6879b JM	215	os_free(psk);
	216	ret = -1;
	217	break;
	218	}
	219	pos++;
	220
	221	ok = 0;
	222	len = os_strlen(pos);
	223	if (len == 64 && hexstr2bin(pos, psk->psk, PMK_LEN) == 0)
	224	ok = 1;
	225	else if (len >= 8 && len < 64) {
	226	pbkdf2_sha1(pos, ssid->ssid, ssid->ssid_len,
	227	4096, psk->psk, PMK_LEN);
	228	ok = 1;
	229	}
	230	if (!ok) {
10656fc2 JM	231	wpa_printf(MSG_ERROR, "Invalid PSK '%s' on line %d in "
10656fc2 JM	232	"'%s'", pos, line, fname);
6fc6879b JM	233	os_free(psk);
	234	ret = -1;
	235	break;
	236	}
	237
	238	psk->next = ssid->wpa_psk;
	239	ssid->wpa_psk = psk;
	240	}
	241
	242	fclose(f);
	243
	244	return ret;
	245	}
	246
	247
0ae687bd JM	248	static int hostapd_derive_psk(struct hostapd_ssid *ssid)
	249	{
	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");
	253	return -1;
	254	}
	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);
	265	return 0;
	266	}
	267
	268
6fc6879b JM	269	int hostapd_setup_wpa_psk(struct hostapd_bss_config *conf)
	270	{
	271	struct hostapd_ssid *ssid = &conf->ssid;
	272
	273	if (ssid->wpa_passphrase != NULL) {
	274	if (ssid->wpa_psk != NULL) {
0ae687bd JM	275	wpa_printf(MSG_DEBUG, "Using pre-configured WPA PSK "
	276	"instead of passphrase");
	277	} else {
	278	wpa_printf(MSG_DEBUG, "Deriving WPA PSK based on "
	279	"passphrase");
	280	if (hostapd_derive_psk(ssid) < 0)
	281	return -1;
6fc6879b	282	}
6fc6879b	283	ssid->wpa_psk->group = 1;
6fc6879b JM	284	}
	285
	286	if (ssid->wpa_psk_file) {
	287	if (hostapd_config_read_wpa_psk(ssid->wpa_psk_file,
	288	&conf->ssid))
	289	return -1;
	290	}
	291
	292	return 0;
	293	}
	294
	295
6fc6879b JM	296	int hostapd_wep_key_cmp(struct hostapd_wep_keys a, struct hostapd_wep_keys b)
	297	{
	298	int i;
	299
	300	if (a->idx != b->idx \|\| a->default_len != b->default_len)
	301	return 1;
	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)
	305	return 1;
	306	return 0;
	307	}
	308
	309
	310	static void hostapd_config_free_radius(struct hostapd_radius_server *servers,
	311	int num_servers)
	312	{
	313	int i;
	314
	315	for (i = 0; i < num_servers; i++) {
	316	os_free(servers[i].shared_secret);
	317	}
	318	os_free(servers);
	319	}
	320
	321
	322	static void hostapd_config_free_eap_user(struct hostapd_eap_user *user)
	323	{
	324	os_free(user->identity);
	325	os_free(user->password);
	326	os_free(user);
	327	}
	328
	329
	330	static void hostapd_config_free_wep(struct hostapd_wep_keys *keys)
	331	{
	332	int i;
	333	for (i = 0; i < NUM_WEP_KEYS; i++) {
	334	os_free(keys->key[i]);
	335	keys->key[i] = NULL;
	336	}
	337	}
	338
	339
	340	static void hostapd_config_free_bss(struct hostapd_bss_config *conf)
	341	{
	342	struct hostapd_wpa_psk psk, prev;
	343	struct hostapd_eap_user user, prev_user;
	344
	345	if (conf == NULL)
	346	return;
	347
	348	psk = conf->ssid.wpa_psk;
	349	while (psk) {
	350	prev = psk;
	351	psk = psk->next;
	352	os_free(prev);
	353	}
	354
	355	os_free(conf->ssid.wpa_passphrase);
	356	os_free(conf->ssid.wpa_psk_file);
	357	#ifdef CONFIG_FULL_DYNAMIC_VLAN
	358	os_free(conf->ssid.vlan_tagged_interface);
	359	#endif /* CONFIG_FULL_DYNAMIC_VLAN */
360
361	user = conf->eap_user;
362	while (user) {
363	prev_user = user;
364	user = user->next;
365	hostapd_config_free_eap_user(prev_user);
366	}
367
368	os_free(conf->dump_log_name);
369	os_free(conf->eap_req_id_text);
370	os_free(conf->accept_mac);
371	os_free(conf->deny_mac);
372	os_free(conf->nas_identifier);
373	hostapd_config_free_radius(conf->radius->auth_servers,
374	conf->radius->num_auth_servers);
375	hostapd_config_free_radius(conf->radius->acct_servers,
376	conf->radius->num_acct_servers);
377	os_free(conf->rsn_preauth_interfaces);
378	os_free(conf->ctrl_interface);
379	os_free(conf->ca_cert);
380	os_free(conf->server_cert);
381	os_free(conf->private_key);
382	os_free(conf->private_key_passwd);
383	os_free(conf->dh_file);
384	os_free(conf->pac_opaque_encr_key);
385	os_free(conf->eap_fast_a_id);
2d867244	386	os_free(conf->eap_fast_a_id_info);
6fc6879b JM	387	os_free(conf->eap_sim_db);
	388	os_free(conf->radius_server_clients);
	389	os_free(conf->test_socket);
	390	os_free(conf->radius);
	391	hostapd_config_free_vlan(conf);
	392	if (conf->ssid.dyn_vlan_keys) {
	393	struct hostapd_ssid *ssid = &conf->ssid;
	394	size_t i;
	395	for (i = 0; i <= ssid->max_dyn_vlan_keys; i++) {
	396	if (ssid->dyn_vlan_keys[i] == NULL)
	397	continue;
	398	hostapd_config_free_wep(ssid->dyn_vlan_keys[i]);
	399	os_free(ssid->dyn_vlan_keys[i]);
	400	}
	401	os_free(ssid->dyn_vlan_keys);
	402	ssid->dyn_vlan_keys = NULL;
	403	}
	404
	405	#ifdef CONFIG_IEEE80211R
	406	{
	407	struct ft_remote_r0kh r0kh, r0kh_prev;
	408	struct ft_remote_r1kh r1kh, r1kh_prev;
	409
	410	r0kh = conf->r0kh_list;
	411	conf->r0kh_list = NULL;
	412	while (r0kh) {
	413	r0kh_prev = r0kh;
	414	r0kh = r0kh->next;
	415	os_free(r0kh_prev);
	416	}
	417
	418	r1kh = conf->r1kh_list;
	419	conf->r1kh_list = NULL;
	420	while (r1kh) {
	421	r1kh_prev = r1kh;
	422	r1kh = r1kh->next;
	423	os_free(r1kh_prev);
	424	}
	425	}
	426	#endif /* CONFIG_IEEE80211R */
ad08c363 JM	427
	428	#ifdef CONFIG_WPS
	429	os_free(conf->wps_pin_requests);
	430	os_free(conf->device_name);
	431	os_free(conf->manufacturer);
	432	os_free(conf->model_name);
	433	os_free(conf->model_number);
	434	os_free(conf->serial_number);
	435	os_free(conf->device_type);
	436	os_free(conf->config_methods);
	437	os_free(conf->ap_pin);
62966253	438	os_free(conf->extra_cred);
4c29cae9	439	os_free(conf->ap_settings);
f620268f JM	440	os_free(conf->upnp_iface);
	441	os_free(conf->friendly_name);
	442	os_free(conf->manufacturer_url);
	443	os_free(conf->model_description);
	444	os_free(conf->model_url);
	445	os_free(conf->upc);
ad08c363	446	#endif /* CONFIG_WPS */
6fc6879b JM	447	}
	448
	449
1c6e69cc JM	450	/**
	451	* hostapd_config_free - Free hostapd configuration
	452	* @conf: Configuration data from hostapd_config_read().
	453	*/
6fc6879b JM	454	void hostapd_config_free(struct hostapd_config *conf)
	455	{
	456	size_t i;
	457
	458	if (conf == NULL)
	459	return;
	460
	461	for (i = 0; i < conf->num_bss; i++)
	462	hostapd_config_free_bss(&conf->bss[i]);
	463	os_free(conf->bss);
79d6c85f JM	464	os_free(conf->supported_rates);
79d6c85f JM	465	os_free(conf->basic_rates);
6fc6879b JM	466
	467	os_free(conf);
	468	}
	469
	470
1c6e69cc JM	471	/**
	472	* hostapd_maclist_found - Find a MAC address from a list
	473	* @list: MAC address list
	474	* @num_entries: Number of addresses in the list
	475	* @addr: Address to search for
	476	* @vlan_id: Buffer for returning VLAN ID or %NULL if not needed
	477	* Returns: 1 if address is in the list or 0 if not.
	478	*
	479	* Perform a binary search for given MAC address from a pre-sorted list.
	480	*/
271d2830 JM	481	int hostapd_maclist_found(struct mac_acl_entry *list, int num_entries,
271d2830 JM	482	const u8 addr, int vlan_id)
6fc6879b JM	483	{
	484	int start, end, middle, res;
	485
	486	start = 0;
	487	end = num_entries - 1;
	488
	489	while (start <= end) {
	490	middle = (start + end) / 2;
271d2830 JM	491	res = os_memcmp(list[middle].addr, addr, ETH_ALEN);
	492	if (res == 0) {
	493	if (vlan_id)
	494	*vlan_id = list[middle].vlan_id;
6fc6879b	495	return 1;
271d2830	496	}
6fc6879b JM	497	if (res < 0)
	498	start = middle + 1;
	499	else
	500	end = middle - 1;
	501	}
	502
	503	return 0;
	504	}
	505
	506
	507	int hostapd_rate_found(int *list, int rate)
	508	{
	509	int i;
	510
	511	if (list == NULL)
	512	return 0;
	513
	514	for (i = 0; list[i] >= 0; i++)
	515	if (list[i] == rate)
	516	return 1;
	517
	518	return 0;
	519	}
	520
	521
	522	const char * hostapd_get_vlan_id_ifname(struct hostapd_vlan *vlan, int vlan_id)
	523	{
	524	struct hostapd_vlan *v = vlan;
	525	while (v) {
	526	if (v->vlan_id == vlan_id \|\| v->vlan_id == VLAN_ID_WILDCARD)
	527	return v->ifname;
	528	v = v->next;
	529	}
	530	return NULL;
	531	}
	532
	533
	534	const u8 * hostapd_get_psk(const struct hostapd_bss_config *conf,
	535	const u8 addr, const u8 prev_psk)
	536	{
	537	struct hostapd_wpa_psk *psk;
	538	int next_ok = prev_psk == NULL;
	539
	540	for (psk = conf->ssid.wpa_psk; psk != NULL; psk = psk->next) {
	541	if (next_ok &&
	542	(psk->group \|\| os_memcmp(psk->addr, addr, ETH_ALEN) == 0))
	543	return psk->psk;
	544
	545	if (psk->psk == prev_psk)
	546	next_ok = 1;
	547	}
	548
	549	return NULL;
	550	}
	551
	552
	553	const struct hostapd_eap_user *
	554	hostapd_get_eap_user(const struct hostapd_bss_config conf, const u8 identity,
	555	size_t identity_len, int phase2)
	556	{
	557	struct hostapd_eap_user *user = conf->eap_user;
	558
ad08c363 JM	559	#ifdef CONFIG_WPS
	560	if (conf->wps_state && identity_len == WSC_ID_ENROLLEE_LEN &&
	561	os_memcmp(identity, WSC_ID_ENROLLEE, WSC_ID_ENROLLEE_LEN) == 0) {
	562	static struct hostapd_eap_user wsc_enrollee;
	563	os_memset(&wsc_enrollee, 0, sizeof(wsc_enrollee));
	564	wsc_enrollee.methods[0].method = eap_server_get_type(
	565	"WSC", &wsc_enrollee.methods[0].vendor);
	566	return &wsc_enrollee;
	567	}
	568
	569	if (conf->wps_state && conf->ap_pin &&
	570	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 = os_strlen(conf->ap_pin);
	578	return &wsc_registrar;
	579	}
	580	#endif /* CONFIG_WPS */
	581
6fc6879b JM	582	while (user) {
	583	if (!phase2 && user->identity == NULL) {
	584	/* Wildcard match */
	585	break;
	586	}
	587
	588	if (user->phase2 == !!phase2 && user->wildcard_prefix &&
	589	identity_len >= user->identity_len &&
	590	os_memcmp(user->identity, identity, user->identity_len) ==
	591	0) {
	592	/* Wildcard prefix match */
	593	break;
	594	}
	595
	596	if (user->phase2 == !!phase2 &&
	597	user->identity_len == identity_len &&
	598	os_memcmp(user->identity, identity, identity_len) == 0)
	599	break;
	600	user = user->next;
	601	}
	602
	603	return user;
	604	}