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

/*
 * hostapd / WPA authenticator glue code
 * Copyright (c) 2002-2011, 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 "common/ieee802_11_defs.h"
#include "eapol_auth/eapol_auth_sm.h"
#include "eapol_auth/eapol_auth_sm_i.h"
#include "eap_server/eap.h"
#include "l2_packet/l2_packet.h"
#include "drivers/driver.h"
#include "hostapd.h"
#include "ieee802_1x.h"
#include "preauth_auth.h"
#include "sta_info.h"
#include "tkip_countermeasures.h"
#include "ap_drv_ops.h"
#include "ap_config.h"
#include "wpa_auth.h"
#include "wpa_auth_glue.h"


static void hostapd_wpa_auth_conf(struct hostapd_bss_config *conf,
				  struct wpa_auth_config *wconf)
{
	os_memset(wconf, 0, sizeof(*wconf));
	wconf->wpa = conf->wpa;
	wconf->wpa_key_mgmt = conf->wpa_key_mgmt;
	wconf->wpa_pairwise = conf->wpa_pairwise;
	wconf->wpa_group = conf->wpa_group;
	wconf->wpa_group_rekey = conf->wpa_group_rekey;
	wconf->wpa_strict_rekey = conf->wpa_strict_rekey;
	wconf->wpa_gmk_rekey = conf->wpa_gmk_rekey;
	wconf->wpa_ptk_rekey = conf->wpa_ptk_rekey;
	wconf->rsn_pairwise = conf->rsn_pairwise;
	wconf->rsn_preauth = conf->rsn_preauth;
	wconf->eapol_version = conf->eapol_version;
	wconf->peerkey = conf->peerkey;
	wconf->wmm_enabled = conf->wmm_enabled;
	wconf->wmm_uapsd = conf->wmm_uapsd;
	wconf->disable_pmksa_caching = conf->disable_pmksa_caching;
	wconf->okc = conf->okc;
#ifdef CONFIG_IEEE80211W
	wconf->ieee80211w = conf->ieee80211w;
#endif /* CONFIG_IEEE80211W */
#ifdef CONFIG_IEEE80211R
	wconf->ssid_len = conf->ssid.ssid_len;
	if (wconf->ssid_len > SSID_LEN)
		wconf->ssid_len = SSID_LEN;
	os_memcpy(wconf->ssid, conf->ssid.ssid, wconf->ssid_len);
	os_memcpy(wconf->mobility_domain, conf->mobility_domain,
		  MOBILITY_DOMAIN_ID_LEN);
	if (conf->nas_identifier &&
	    os_strlen(conf->nas_identifier) <= FT_R0KH_ID_MAX_LEN) {
		wconf->r0_key_holder_len = os_strlen(conf->nas_identifier);
		os_memcpy(wconf->r0_key_holder, conf->nas_identifier,
			  wconf->r0_key_holder_len);
	}
	os_memcpy(wconf->r1_key_holder, conf->r1_key_holder, FT_R1KH_ID_LEN);
	wconf->r0_key_lifetime = conf->r0_key_lifetime;
	wconf->reassociation_deadline = conf->reassociation_deadline;
	wconf->r0kh_list = conf->r0kh_list;
	wconf->r1kh_list = conf->r1kh_list;
	wconf->pmk_r1_push = conf->pmk_r1_push;
	wconf->ft_over_ds = conf->ft_over_ds;
#endif /* CONFIG_IEEE80211R */
}


static void hostapd_wpa_auth_logger(void *ctx, const u8 *addr,
				    logger_level level, const char *txt)
{
#ifndef CONFIG_NO_HOSTAPD_LOGGER
	struct hostapd_data *hapd = ctx;
	int hlevel;

	switch (level) {
	case LOGGER_WARNING:
		hlevel = HOSTAPD_LEVEL_WARNING;
		break;
	case LOGGER_INFO:
		hlevel = HOSTAPD_LEVEL_INFO;
		break;
	case LOGGER_DEBUG:
	default:
		hlevel = HOSTAPD_LEVEL_DEBUG;
		break;
	}

	hostapd_logger(hapd, addr, HOSTAPD_MODULE_WPA, hlevel, "%s", txt);
#endif /* CONFIG_NO_HOSTAPD_LOGGER */
}


static void hostapd_wpa_auth_disconnect(void *ctx, const u8 *addr,
					u16 reason)
{
	struct hostapd_data *hapd = ctx;
	wpa_printf(MSG_DEBUG, "%s: WPA authenticator requests disconnect: "
		   "STA " MACSTR " reason %d",
		   __func__, MAC2STR(addr), reason);
	ap_sta_disconnect(hapd, NULL, addr, reason);
}


static void hostapd_wpa_auth_mic_failure_report(void *ctx, const u8 *addr)
{
	struct hostapd_data *hapd = ctx;
	michael_mic_failure(hapd, addr, 0);
}


static void hostapd_wpa_auth_set_eapol(void *ctx, const u8 *addr,
				       wpa_eapol_variable var, int value)
{
	struct hostapd_data *hapd = ctx;
	struct sta_info *sta = ap_get_sta(hapd, addr);
	if (sta == NULL)
		return;
	switch (var) {
	case WPA_EAPOL_portEnabled:
		ieee802_1x_notify_port_enabled(sta->eapol_sm, value);
		break;
	case WPA_EAPOL_portValid:
		ieee802_1x_notify_port_valid(sta->eapol_sm, value);
		break;
	case WPA_EAPOL_authorized:
		ieee802_1x_set_sta_authorized(hapd, sta, value);
		break;
	case WPA_EAPOL_portControl_Auto:
		if (sta->eapol_sm)
			sta->eapol_sm->portControl = Auto;
		break;
	case WPA_EAPOL_keyRun:
		if (sta->eapol_sm)
			sta->eapol_sm->keyRun = value ? TRUE : FALSE;
		break;
	case WPA_EAPOL_keyAvailable:
		if (sta->eapol_sm)
			sta->eapol_sm->eap_if->eapKeyAvailable =
				value ? TRUE : FALSE;
		break;
	case WPA_EAPOL_keyDone:
		if (sta->eapol_sm)
			sta->eapol_sm->keyDone = value ? TRUE : FALSE;
		break;
	case WPA_EAPOL_inc_EapolFramesTx:
		if (sta->eapol_sm)
			sta->eapol_sm->dot1xAuthEapolFramesTx++;
		break;
	}
}


static int hostapd_wpa_auth_get_eapol(void *ctx, const u8 *addr,
				      wpa_eapol_variable var)
{
	struct hostapd_data *hapd = ctx;
	struct sta_info *sta = ap_get_sta(hapd, addr);
	if (sta == NULL || sta->eapol_sm == NULL)
		return -1;
	switch (var) {
	case WPA_EAPOL_keyRun:
		return sta->eapol_sm->keyRun;
	case WPA_EAPOL_keyAvailable:
		return sta->eapol_sm->eap_if->eapKeyAvailable;
	default:
		return -1;
	}
}


static const u8 * hostapd_wpa_auth_get_psk(void *ctx, const u8 *addr,
					   const u8 *prev_psk)
{
	struct hostapd_data *hapd = ctx;
	struct sta_info *sta = ap_get_sta(hapd, addr);
	if (sta && sta->psk)
		return sta->psk;
	return hostapd_get_psk(hapd->conf, addr, prev_psk);
}


static int hostapd_wpa_auth_get_msk(void *ctx, const u8 *addr, u8 *msk,
				    size_t *len)
{
	struct hostapd_data *hapd = ctx;
	const u8 *key;
	size_t keylen;
	struct sta_info *sta;

	sta = ap_get_sta(hapd, addr);
	if (sta == NULL)
		return -1;

	key = ieee802_1x_get_key(sta->eapol_sm, &keylen);
	if (key == NULL)
		return -1;

	if (keylen > *len)
		keylen = *len;
	os_memcpy(msk, key, keylen);
	*len = keylen;

	return 0;
}


static int hostapd_wpa_auth_set_key(void *ctx, int vlan_id, enum wpa_alg alg,
				    const u8 *addr, int idx, u8 *key,
				    size_t key_len)
{
	struct hostapd_data *hapd = ctx;
	const char *ifname = hapd->conf->iface;

	if (vlan_id > 0) {
		ifname = hostapd_get_vlan_id_ifname(hapd->conf->vlan, vlan_id);
		if (ifname == NULL)
			return -1;
	}

	return hostapd_drv_set_key(ifname, hapd, alg, addr, idx, 1, NULL, 0,
				   key, key_len);
}


static int hostapd_wpa_auth_get_seqnum(void *ctx, const u8 *addr, int idx,
				       u8 *seq)
{
	struct hostapd_data *hapd = ctx;
	return hostapd_get_seqnum(hapd->conf->iface, hapd, addr, idx, seq);
}


static int hostapd_wpa_auth_send_eapol(void *ctx, const u8 *addr,
				       const u8 *data, size_t data_len,
				       int encrypt)
{
	struct hostapd_data *hapd = ctx;
	struct sta_info *sta;
	u32 flags = 0;

	sta = ap_get_sta(hapd, addr);
	if (sta)
		flags = hostapd_sta_flags_to_drv(sta->flags);

	return hostapd_drv_hapd_send_eapol(hapd, addr, data, data_len,
					   encrypt, flags);
}


static int hostapd_wpa_auth_for_each_sta(
	void *ctx, int (*cb)(struct wpa_state_machine *sm, void *ctx),
	void *cb_ctx)
{
	struct hostapd_data *hapd = ctx;
	struct sta_info *sta;

	for (sta = hapd->sta_list; sta; sta = sta->next) {
		if (sta->wpa_sm && cb(sta->wpa_sm, cb_ctx))
			return 1;
	}
	return 0;
}


struct wpa_auth_iface_iter_data {
	int (*cb)(struct wpa_authenticator *sm, void *ctx);
	void *cb_ctx;
};

static int wpa_auth_iface_iter(struct hostapd_iface *iface, void *ctx)
{
	struct wpa_auth_iface_iter_data *data = ctx;
	size_t i;
	for (i = 0; i < iface->num_bss; i++) {
		if (iface->bss[i]->wpa_auth &&
		    data->cb(iface->bss[i]->wpa_auth, data->cb_ctx))
			return 1;
	}
	return 0;
}


static int hostapd_wpa_auth_for_each_auth(
	void *ctx, int (*cb)(struct wpa_authenticator *sm, void *ctx),
	void *cb_ctx)
{
	struct hostapd_data *hapd = ctx;
	struct wpa_auth_iface_iter_data data;
	if (hapd->iface->for_each_interface == NULL)
		return -1;
	data.cb = cb;
	data.cb_ctx = cb_ctx;
	return hapd->iface->for_each_interface(hapd->iface->interfaces,
					       wpa_auth_iface_iter, &data);
}


#ifdef CONFIG_IEEE80211R

struct wpa_auth_ft_iface_iter_data {
	struct hostapd_data *src_hapd;
	const u8 *dst;
	const u8 *data;
	size_t data_len;
};


static int hostapd_wpa_auth_ft_iter(struct hostapd_iface *iface, void *ctx)
{
	struct wpa_auth_ft_iface_iter_data *idata = ctx;
	struct hostapd_data *hapd;
	size_t j;

	for (j = 0; j < iface->num_bss; j++) {
		hapd = iface->bss[j];
		if (hapd == idata->src_hapd)
			continue;
		if (os_memcmp(hapd->own_addr, idata->dst, ETH_ALEN) == 0) {
			wpa_printf(MSG_DEBUG, "FT: Send RRB data directly to "
				   "locally managed BSS " MACSTR "@%s -> "
				   MACSTR "@%s",
				   MAC2STR(idata->src_hapd->own_addr),
				   idata->src_hapd->conf->iface,
				   MAC2STR(hapd->own_addr), hapd->conf->iface);
			wpa_ft_rrb_rx(hapd->wpa_auth,
				      idata->src_hapd->own_addr,
				      idata->data, idata->data_len);
			return 1;
		}
	}

	return 0;
}

#endif /* CONFIG_IEEE80211R */


static int hostapd_wpa_auth_send_ether(void *ctx, const u8 *dst, u16 proto,
				       const u8 *data, size_t data_len)
{
	struct hostapd_data *hapd = ctx;
	struct l2_ethhdr *buf;
	int ret;

#ifdef CONFIG_IEEE80211R
	if (proto == ETH_P_RRB && hapd->iface->for_each_interface) {
		int res;
		struct wpa_auth_ft_iface_iter_data idata;
		idata.src_hapd = hapd;
		idata.dst = dst;
		idata.data = data;
		idata.data_len = data_len;
		res = hapd->iface->for_each_interface(hapd->iface->interfaces,
						      hostapd_wpa_auth_ft_iter,
						      &idata);
		if (res == 1)
			return data_len;
	}
#endif /* CONFIG_IEEE80211R */

	if (hapd->driver && hapd->driver->send_ether)
		return hapd->driver->send_ether(hapd->drv_priv, dst,
						hapd->own_addr, proto,
						data, data_len);
	if (hapd->l2 == NULL)
		return -1;

	buf = os_malloc(sizeof(*buf) + data_len);
	if (buf == NULL)
		return -1;
	os_memcpy(buf->h_dest, dst, ETH_ALEN);
	os_memcpy(buf->h_source, hapd->own_addr, ETH_ALEN);
	buf->h_proto = host_to_be16(proto);
	os_memcpy(buf + 1, data, data_len);
	ret = l2_packet_send(hapd->l2, dst, proto, (u8 *) buf,
			     sizeof(*buf) + data_len);
	os_free(buf);
	return ret;
}


#ifdef CONFIG_IEEE80211R

static int hostapd_wpa_auth_send_ft_action(void *ctx, const u8 *dst,
					   const u8 *data, size_t data_len)
{
	struct hostapd_data *hapd = ctx;
	int res;
	struct ieee80211_mgmt *m;
	size_t mlen;
	struct sta_info *sta;

	sta = ap_get_sta(hapd, dst);
	if (sta == NULL || sta->wpa_sm == NULL)
		return -1;

	m = os_zalloc(sizeof(*m) + data_len);
	if (m == NULL)
		return -1;
	mlen = ((u8 *) &m->u - (u8 *) m) + data_len;
	m->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
					WLAN_FC_STYPE_ACTION);
	os_memcpy(m->da, dst, ETH_ALEN);
	os_memcpy(m->sa, hapd->own_addr, ETH_ALEN);
	os_memcpy(m->bssid, hapd->own_addr, ETH_ALEN);
	os_memcpy(&m->u, data, data_len);

	res = hostapd_drv_send_mlme(hapd, (u8 *) m, mlen, 0);
	os_free(m);
	return res;
}


static struct wpa_state_machine *
hostapd_wpa_auth_add_sta(void *ctx, const u8 *sta_addr)
{
	struct hostapd_data *hapd = ctx;
	struct sta_info *sta;

	sta = ap_sta_add(hapd, sta_addr);
	if (sta == NULL)
		return NULL;
	if (sta->wpa_sm) {
		sta->auth_alg = WLAN_AUTH_FT;
		return sta->wpa_sm;
	}

	sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, sta->addr);
	if (sta->wpa_sm == NULL) {
		ap_free_sta(hapd, sta);
		return NULL;
	}
	sta->auth_alg = WLAN_AUTH_FT;

	return sta->wpa_sm;
}


static void hostapd_rrb_receive(void *ctx, const u8 *src_addr, const u8 *buf,
				size_t len)
{
	struct hostapd_data *hapd = ctx;
	struct l2_ethhdr *ethhdr;
	if (len < sizeof(*ethhdr))
		return;
	ethhdr = (struct l2_ethhdr *) buf;
	wpa_printf(MSG_DEBUG, "FT: RRB received packet " MACSTR " -> "
		   MACSTR, MAC2STR(ethhdr->h_source), MAC2STR(ethhdr->h_dest));
	wpa_ft_rrb_rx(hapd->wpa_auth, ethhdr->h_source, buf + sizeof(*ethhdr),
		      len - sizeof(*ethhdr));
}

#endif /* CONFIG_IEEE80211R */


int hostapd_setup_wpa(struct hostapd_data *hapd)
{
	struct wpa_auth_config _conf;
	struct wpa_auth_callbacks cb;
	const u8 *wpa_ie;
	size_t wpa_ie_len;

	hostapd_wpa_auth_conf(hapd->conf, &_conf);
	if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_EAPOL_TX_STATUS)
		_conf.tx_status = 1;
	os_memset(&cb, 0, sizeof(cb));
	cb.ctx = hapd;
	cb.logger = hostapd_wpa_auth_logger;
	cb.disconnect = hostapd_wpa_auth_disconnect;
	cb.mic_failure_report = hostapd_wpa_auth_mic_failure_report;
	cb.set_eapol = hostapd_wpa_auth_set_eapol;
	cb.get_eapol = hostapd_wpa_auth_get_eapol;
	cb.get_psk = hostapd_wpa_auth_get_psk;
	cb.get_msk = hostapd_wpa_auth_get_msk;
	cb.set_key = hostapd_wpa_auth_set_key;
	cb.get_seqnum = hostapd_wpa_auth_get_seqnum;
	cb.send_eapol = hostapd_wpa_auth_send_eapol;
	cb.for_each_sta = hostapd_wpa_auth_for_each_sta;
	cb.for_each_auth = hostapd_wpa_auth_for_each_auth;
	cb.send_ether = hostapd_wpa_auth_send_ether;
#ifdef CONFIG_IEEE80211R
	cb.send_ft_action = hostapd_wpa_auth_send_ft_action;
	cb.add_sta = hostapd_wpa_auth_add_sta;
#endif /* CONFIG_IEEE80211R */
	hapd->wpa_auth = wpa_init(hapd->own_addr, &_conf, &cb);
	if (hapd->wpa_auth == NULL) {
		wpa_printf(MSG_ERROR, "WPA initialization failed.");
		return -1;
	}

	if (hostapd_set_privacy(hapd, 1)) {
		wpa_printf(MSG_ERROR, "Could not set PrivacyInvoked "
			   "for interface %s", hapd->conf->iface);
		return -1;
	}

	wpa_ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &wpa_ie_len);
	if (hostapd_set_generic_elem(hapd, wpa_ie, wpa_ie_len)) {
		wpa_printf(MSG_ERROR, "Failed to configure WPA IE for "
			   "the kernel driver.");
		return -1;
	}

	if (rsn_preauth_iface_init(hapd)) {
		wpa_printf(MSG_ERROR, "Initialization of RSN "
			   "pre-authentication failed.");
		return -1;
	}

#ifdef CONFIG_IEEE80211R
	if (!hostapd_drv_none(hapd)) {
		hapd->l2 = l2_packet_init(hapd->conf->bridge[0] ?
					  hapd->conf->bridge :
					  hapd->conf->iface, NULL, ETH_P_RRB,
					  hostapd_rrb_receive, hapd, 1);
		if (hapd->l2 == NULL &&
		    (hapd->driver == NULL ||
		     hapd->driver->send_ether == NULL)) {
			wpa_printf(MSG_ERROR, "Failed to open l2_packet "
				   "interface");
			return -1;
		}
	}
#endif /* CONFIG_IEEE80211R */

	return 0;

}


void hostapd_reconfig_wpa(struct hostapd_data *hapd)
{
	struct wpa_auth_config wpa_auth_conf;
	hostapd_wpa_auth_conf(hapd->conf, &wpa_auth_conf);
	wpa_reconfig(hapd->wpa_auth, &wpa_auth_conf);
}


void hostapd_deinit_wpa(struct hostapd_data *hapd)
{
	ieee80211_tkip_countermeasures_deinit(hapd);
	rsn_preauth_iface_deinit(hapd);
	if (hapd->wpa_auth) {
		wpa_deinit(hapd->wpa_auth);
		hapd->wpa_auth = NULL;

		if (hostapd_set_privacy(hapd, 0)) {
			wpa_printf(MSG_DEBUG, "Could not disable "
				   "PrivacyInvoked for interface %s",
				   hapd->conf->iface);
		}

		if (hostapd_set_generic_elem(hapd, (u8 *) "", 0)) {
			wpa_printf(MSG_DEBUG, "Could not remove generic "
				   "information element from interface %s",
				   hapd->conf->iface);
		}
	}
	ieee802_1x_deinit(hapd);

#ifdef CONFIG_IEEE80211R
	l2_packet_deinit(hapd->l2);
#endif /* CONFIG_IEEE80211R */
}
Commit	Line	Data
c442055e JM	1	/*
c442055e JM	2	* hostapd / WPA authenticator glue code
7e031850	3	* Copyright (c) 2002-2011, Jouni Malinen <j@w1.fi>
c442055e	4	*
0f3d578e JM	5	* This software may be distributed under the terms of the BSD license.
0f3d578e JM	6	* See README for more details.
c442055e JM	7	*/
	8
	9	#include "utils/includes.h"
	10
	11	#include "utils/common.h"
	12	#include "common/ieee802_11_defs.h"
	13	#include "eapol_auth/eapol_auth_sm.h"
	14	#include "eapol_auth/eapol_auth_sm_i.h"
	15	#include "eap_server/eap.h"
	16	#include "l2_packet/l2_packet.h"
6e6e8c31	17	#include "drivers/driver.h"
6226e38d JM	18	#include "hostapd.h"
	19	#include "ieee802_1x.h"
	20	#include "preauth_auth.h"
	21	#include "sta_info.h"
	22	#include "tkip_countermeasures.h"
8b06c1ed JM	23	#include "ap_drv_ops.h"
	24	#include "ap_config.h"
	25	#include "wpa_auth.h"
373f6c72	26	#include "wpa_auth_glue.h"
c442055e JM	27
	28
	29	static void hostapd_wpa_auth_conf(struct hostapd_bss_config *conf,
	30	struct wpa_auth_config *wconf)
	31	{
d28b43f6	32	os_memset(wconf, 0, sizeof(*wconf));
c442055e JM	33	wconf->wpa = conf->wpa;
	34	wconf->wpa_key_mgmt = conf->wpa_key_mgmt;
	35	wconf->wpa_pairwise = conf->wpa_pairwise;
	36	wconf->wpa_group = conf->wpa_group;
	37	wconf->wpa_group_rekey = conf->wpa_group_rekey;
	38	wconf->wpa_strict_rekey = conf->wpa_strict_rekey;
	39	wconf->wpa_gmk_rekey = conf->wpa_gmk_rekey;
	40	wconf->wpa_ptk_rekey = conf->wpa_ptk_rekey;
	41	wconf->rsn_pairwise = conf->rsn_pairwise;
	42	wconf->rsn_preauth = conf->rsn_preauth;
	43	wconf->eapol_version = conf->eapol_version;
	44	wconf->peerkey = conf->peerkey;
	45	wconf->wmm_enabled = conf->wmm_enabled;
721abef9	46	wconf->wmm_uapsd = conf->wmm_uapsd;
cb465555	47	wconf->disable_pmksa_caching = conf->disable_pmksa_caching;
c442055e JM	48	wconf->okc = conf->okc;
	49	#ifdef CONFIG_IEEE80211W
	50	wconf->ieee80211w = conf->ieee80211w;
	51	#endif /* CONFIG_IEEE80211W */
	52	#ifdef CONFIG_IEEE80211R
	53	wconf->ssid_len = conf->ssid.ssid_len;
	54	if (wconf->ssid_len > SSID_LEN)
	55	wconf->ssid_len = SSID_LEN;
	56	os_memcpy(wconf->ssid, conf->ssid.ssid, wconf->ssid_len);
	57	os_memcpy(wconf->mobility_domain, conf->mobility_domain,
	58	MOBILITY_DOMAIN_ID_LEN);
	59	if (conf->nas_identifier &&
	60	os_strlen(conf->nas_identifier) <= FT_R0KH_ID_MAX_LEN) {
	61	wconf->r0_key_holder_len = os_strlen(conf->nas_identifier);
	62	os_memcpy(wconf->r0_key_holder, conf->nas_identifier,
	63	wconf->r0_key_holder_len);
	64	}
	65	os_memcpy(wconf->r1_key_holder, conf->r1_key_holder, FT_R1KH_ID_LEN);
	66	wconf->r0_key_lifetime = conf->r0_key_lifetime;
	67	wconf->reassociation_deadline = conf->reassociation_deadline;
	68	wconf->r0kh_list = conf->r0kh_list;
	69	wconf->r1kh_list = conf->r1kh_list;
	70	wconf->pmk_r1_push = conf->pmk_r1_push;
d7956add	71	wconf->ft_over_ds = conf->ft_over_ds;
c442055e JM	72	#endif /* CONFIG_IEEE80211R */
	73	}
	74
	75
	76	static void hostapd_wpa_auth_logger(void ctx, const u8 addr,
	77	logger_level level, const char *txt)
	78	{
	79	#ifndef CONFIG_NO_HOSTAPD_LOGGER
	80	struct hostapd_data *hapd = ctx;
	81	int hlevel;
	82
	83	switch (level) {
	84	case LOGGER_WARNING:
	85	hlevel = HOSTAPD_LEVEL_WARNING;
	86	break;
	87	case LOGGER_INFO:
	88	hlevel = HOSTAPD_LEVEL_INFO;
	89	break;
	90	case LOGGER_DEBUG:
	91	default:
	92	hlevel = HOSTAPD_LEVEL_DEBUG;
	93	break;
	94	}
	95
	96	hostapd_logger(hapd, addr, HOSTAPD_MODULE_WPA, hlevel, "%s", txt);
	97	#endif /* CONFIG_NO_HOSTAPD_LOGGER */
	98	}
	99
	100
	101	static void hostapd_wpa_auth_disconnect(void ctx, const u8 addr,
	102	u16 reason)
	103	{
	104	struct hostapd_data *hapd = ctx;
	105	wpa_printf(MSG_DEBUG, "%s: WPA authenticator requests disconnect: "
	106	"STA " MACSTR " reason %d",
	107	__func__, MAC2STR(addr), reason);
	108	ap_sta_disconnect(hapd, NULL, addr, reason);
	109	}
	110
	111
	112	static void hostapd_wpa_auth_mic_failure_report(void ctx, const u8 addr)
	113	{
	114	struct hostapd_data *hapd = ctx;
	115	michael_mic_failure(hapd, addr, 0);
	116	}
	117
	118
	119	static void hostapd_wpa_auth_set_eapol(void ctx, const u8 addr,
	120	wpa_eapol_variable var, int value)
	121	{
	122	struct hostapd_data *hapd = ctx;
	123	struct sta_info *sta = ap_get_sta(hapd, addr);
	124	if (sta == NULL)
	125	return;
	126	switch (var) {
	127	case WPA_EAPOL_portEnabled:
	128	ieee802_1x_notify_port_enabled(sta->eapol_sm, value);
	129	break;
	130	case WPA_EAPOL_portValid:
	131	ieee802_1x_notify_port_valid(sta->eapol_sm, value);
	132	break;
	133	case WPA_EAPOL_authorized:
	134	ieee802_1x_set_sta_authorized(hapd, sta, value);
	135	break;
136	case WPA_EAPOL_portControl_Auto:
137	if (sta->eapol_sm)
138	sta->eapol_sm->portControl = Auto;
139	break;
140	case WPA_EAPOL_keyRun:
141	if (sta->eapol_sm)
142	sta->eapol_sm->keyRun = value ? TRUE : FALSE;
143	break;
144	case WPA_EAPOL_keyAvailable:
145	if (sta->eapol_sm)
146	sta->eapol_sm->eap_if->eapKeyAvailable =
147	value ? TRUE : FALSE;
148	break;
149	case WPA_EAPOL_keyDone:
150	if (sta->eapol_sm)
151	sta->eapol_sm->keyDone = value ? TRUE : FALSE;
152	break;
153	case WPA_EAPOL_inc_EapolFramesTx:
154	if (sta->eapol_sm)
155	sta->eapol_sm->dot1xAuthEapolFramesTx++;
156	break;
157	}
158	}
159
160
161	static int hostapd_wpa_auth_get_eapol(void ctx, const u8 addr,
162	wpa_eapol_variable var)
163	{
164	struct hostapd_data *hapd = ctx;
165	struct sta_info *sta = ap_get_sta(hapd, addr);
166	if (sta == NULL \|\| sta->eapol_sm == NULL)
167	return -1;
168	switch (var) {
169	case WPA_EAPOL_keyRun:
170	return sta->eapol_sm->keyRun;
171	case WPA_EAPOL_keyAvailable:
172	return sta->eapol_sm->eap_if->eapKeyAvailable;
173	default:
174	return -1;
175	}
176	}
177
178
179	static const u8 * hostapd_wpa_auth_get_psk(void ctx, const u8 addr,
180	const u8 *prev_psk)
181	{
182	struct hostapd_data *hapd = ctx;
05ab9712 MB	183	struct sta_info *sta = ap_get_sta(hapd, addr);
	184	if (sta && sta->psk)
	185	return sta->psk;
c442055e JM	186	return hostapd_get_psk(hapd->conf, addr, prev_psk);
	187	}
	188
	189
	190	static int hostapd_wpa_auth_get_msk(void ctx, const u8 addr, u8 *msk,
	191	size_t *len)
	192	{
	193	struct hostapd_data *hapd = ctx;
	194	const u8 *key;
	195	size_t keylen;
	196	struct sta_info *sta;
	197
	198	sta = ap_get_sta(hapd, addr);
	199	if (sta == NULL)
	200	return -1;
	201
	202	key = ieee802_1x_get_key(sta->eapol_sm, &keylen);
	203	if (key == NULL)
	204	return -1;
	205
	206	if (keylen > *len)
	207	keylen = *len;
	208	os_memcpy(msk, key, keylen);
	209	*len = keylen;
	210
	211	return 0;
	212	}
	213
	214
71934751	215	static int hostapd_wpa_auth_set_key(void *ctx, int vlan_id, enum wpa_alg alg,
c442055e JM	216	const u8 addr, int idx, u8 key,
	217	size_t key_len)
	218	{
	219	struct hostapd_data *hapd = ctx;
	220	const char *ifname = hapd->conf->iface;
	221
	222	if (vlan_id > 0) {
	223	ifname = hostapd_get_vlan_id_ifname(hapd->conf->vlan, vlan_id);
	224	if (ifname == NULL)
	225	return -1;
	226	}
	227
3acdf771 JM	228	return hostapd_drv_set_key(ifname, hapd, alg, addr, idx, 1, NULL, 0,
3acdf771 JM	229	key, key_len);
c442055e JM	230	}
	231
	232
	233	static int hostapd_wpa_auth_get_seqnum(void ctx, const u8 addr, int idx,
	234	u8 *seq)
	235	{
	236	struct hostapd_data *hapd = ctx;
	237	return hostapd_get_seqnum(hapd->conf->iface, hapd, addr, idx, seq);
	238	}
	239
	240
	241	static int hostapd_wpa_auth_send_eapol(void ctx, const u8 addr,
	242	const u8 *data, size_t data_len,
	243	int encrypt)
	244	{
	245	struct hostapd_data *hapd = ctx;
4378fc14 FF	246	struct sta_info *sta;
	247	u32 flags = 0;
	248
	249	sta = ap_get_sta(hapd, addr);
	250	if (sta)
	251	flags = hostapd_sta_flags_to_drv(sta->flags);
	252
3acdf771	253	return hostapd_drv_hapd_send_eapol(hapd, addr, data, data_len,
4378fc14	254	encrypt, flags);
c442055e JM	255	}
	256
	257
	258	static int hostapd_wpa_auth_for_each_sta(
	259	void ctx, int (cb)(struct wpa_state_machine sm, void ctx),
	260	void *cb_ctx)
	261	{
	262	struct hostapd_data *hapd = ctx;
	263	struct sta_info *sta;
	264
	265	for (sta = hapd->sta_list; sta; sta = sta->next) {
	266	if (sta->wpa_sm && cb(sta->wpa_sm, cb_ctx))
	267	return 1;
	268	}
	269	return 0;
	270	}
	271
	272
	273	struct wpa_auth_iface_iter_data {
	274	int (cb)(struct wpa_authenticator sm, void *ctx);
	275	void *cb_ctx;
	276	};
	277
	278	static int wpa_auth_iface_iter(struct hostapd_iface iface, void ctx)
	279	{
	280	struct wpa_auth_iface_iter_data *data = ctx;
	281	size_t i;
	282	for (i = 0; i < iface->num_bss; i++) {
03bcb0af JM	283	if (iface->bss[i]->wpa_auth &&
03bcb0af JM	284	data->cb(iface->bss[i]->wpa_auth, data->cb_ctx))
c442055e JM	285	return 1;
	286	}
	287	return 0;
	288	}
	289
	290
	291	static int hostapd_wpa_auth_for_each_auth(
	292	void ctx, int (cb)(struct wpa_authenticator sm, void ctx),
	293	void *cb_ctx)
	294	{
	295	struct hostapd_data *hapd = ctx;
	296	struct wpa_auth_iface_iter_data data;
1b56c26c JM	297	if (hapd->iface->for_each_interface == NULL)
1b56c26c JM	298	return -1;
c442055e JM	299	data.cb = cb;
c442055e JM	300	data.cb_ctx = cb_ctx;
1b56c26c JM	301	return hapd->iface->for_each_interface(hapd->iface->interfaces,
1b56c26c JM	302	wpa_auth_iface_iter, &data);
c442055e JM	303	}
	304
	305
67ccef7e JM	306	#ifdef CONFIG_IEEE80211R
	307
	308	struct wpa_auth_ft_iface_iter_data {
	309	struct hostapd_data *src_hapd;
	310	const u8 *dst;
	311	const u8 *data;
	312	size_t data_len;
	313	};
	314
	315
	316	static int hostapd_wpa_auth_ft_iter(struct hostapd_iface iface, void ctx)
	317	{
	318	struct wpa_auth_ft_iface_iter_data *idata = ctx;
	319	struct hostapd_data *hapd;
	320	size_t j;
	321
	322	for (j = 0; j < iface->num_bss; j++) {
	323	hapd = iface->bss[j];
	324	if (hapd == idata->src_hapd)
	325	continue;
	326	if (os_memcmp(hapd->own_addr, idata->dst, ETH_ALEN) == 0) {
	327	wpa_printf(MSG_DEBUG, "FT: Send RRB data directly to "
	328	"locally managed BSS " MACSTR "@%s -> "
	329	MACSTR "@%s",
	330	MAC2STR(idata->src_hapd->own_addr),
	331	idata->src_hapd->conf->iface,
	332	MAC2STR(hapd->own_addr), hapd->conf->iface);
7e031850 JM	333	wpa_ft_rrb_rx(hapd->wpa_auth,
	334	idata->src_hapd->own_addr,
	335	idata->data, idata->data_len);
67ccef7e JM	336	return 1;
	337	}
	338	}
	339
	340	return 0;
	341	}
	342
	343	#endif /* CONFIG_IEEE80211R */
	344
	345
c442055e JM	346	static int hostapd_wpa_auth_send_ether(void ctx, const u8 dst, u16 proto,
	347	const u8 *data, size_t data_len)
	348	{
	349	struct hostapd_data *hapd = ctx;
7e031850 JM	350	struct l2_ethhdr *buf;
7e031850 JM	351	int ret;
c442055e	352
67ccef7e JM	353	#ifdef CONFIG_IEEE80211R
	354	if (proto == ETH_P_RRB && hapd->iface->for_each_interface) {
	355	int res;
	356	struct wpa_auth_ft_iface_iter_data idata;
	357	idata.src_hapd = hapd;
	358	idata.dst = dst;
	359	idata.data = data;
	360	idata.data_len = data_len;
	361	res = hapd->iface->for_each_interface(hapd->iface->interfaces,
	362	hostapd_wpa_auth_ft_iter,
	363	&idata);
	364	if (res == 1)
	365	return data_len;
	366	}
	367	#endif /* CONFIG_IEEE80211R */
	368
c442055e JM	369	if (hapd->driver && hapd->driver->send_ether)
	370	return hapd->driver->send_ether(hapd->drv_priv, dst,
	371	hapd->own_addr, proto,
	372	data, data_len);
	373	if (hapd->l2 == NULL)
	374	return -1;
7e031850 JM	375
	376	buf = os_malloc(sizeof(*buf) + data_len);
	377	if (buf == NULL)
	378	return -1;
	379	os_memcpy(buf->h_dest, dst, ETH_ALEN);
	380	os_memcpy(buf->h_source, hapd->own_addr, ETH_ALEN);
	381	buf->h_proto = host_to_be16(proto);
	382	os_memcpy(buf + 1, data, data_len);
	383	ret = l2_packet_send(hapd->l2, dst, proto, (u8 *) buf,
	384	sizeof(*buf) + data_len);
	385	os_free(buf);
2683690d	386	return ret;
c442055e JM	387	}
	388
	389
	390	#ifdef CONFIG_IEEE80211R
	391
	392	static int hostapd_wpa_auth_send_ft_action(void ctx, const u8 dst,
	393	const u8 *data, size_t data_len)
	394	{
	395	struct hostapd_data *hapd = ctx;
	396	int res;
	397	struct ieee80211_mgmt *m;
	398	size_t mlen;
	399	struct sta_info *sta;
	400
	401	sta = ap_get_sta(hapd, dst);
	402	if (sta == NULL \|\| sta->wpa_sm == NULL)
	403	return -1;
	404
	405	m = os_zalloc(sizeof(*m) + data_len);
	406	if (m == NULL)
	407	return -1;
	408	mlen = ((u8 ) &m->u - (u8 ) m) + data_len;
	409	m->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
	410	WLAN_FC_STYPE_ACTION);
	411	os_memcpy(m->da, dst, ETH_ALEN);
	412	os_memcpy(m->sa, hapd->own_addr, ETH_ALEN);
	413	os_memcpy(m->bssid, hapd->own_addr, ETH_ALEN);
	414	os_memcpy(&m->u, data, data_len);
	415
8cfa3527	416	res = hostapd_drv_send_mlme(hapd, (u8 *) m, mlen, 0);
c442055e JM	417	os_free(m);
	418	return res;
	419	}
	420
	421
	422	static struct wpa_state_machine *
	423	hostapd_wpa_auth_add_sta(void ctx, const u8 sta_addr)
	424	{
	425	struct hostapd_data *hapd = ctx;
	426	struct sta_info *sta;
	427
	428	sta = ap_sta_add(hapd, sta_addr);
	429	if (sta == NULL)
	430	return NULL;
21c9b690 JM	431	if (sta->wpa_sm) {
21c9b690 JM	432	sta->auth_alg = WLAN_AUTH_FT;
c442055e	433	return sta->wpa_sm;
21c9b690	434	}
c442055e JM	435
	436	sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, sta->addr);
	437	if (sta->wpa_sm == NULL) {
	438	ap_free_sta(hapd, sta);
	439	return NULL;
	440	}
	441	sta->auth_alg = WLAN_AUTH_FT;
	442
	443	return sta->wpa_sm;
	444	}
	445
	446
	447	static void hostapd_rrb_receive(void ctx, const u8 src_addr, const u8 *buf,
	448	size_t len)
	449	{
	450	struct hostapd_data *hapd = ctx;
7e031850 JM	451	struct l2_ethhdr *ethhdr;
	452	if (len < sizeof(*ethhdr))
	453	return;
	454	ethhdr = (struct l2_ethhdr *) buf;
	455	wpa_printf(MSG_DEBUG, "FT: RRB received packet " MACSTR " -> "
	456	MACSTR, MAC2STR(ethhdr->h_source), MAC2STR(ethhdr->h_dest));
	457	wpa_ft_rrb_rx(hapd->wpa_auth, ethhdr->h_source, buf + sizeof(*ethhdr),
	458	len - sizeof(*ethhdr));
c442055e JM	459	}
	460
	461	#endif /* CONFIG_IEEE80211R */
	462
	463
	464	int hostapd_setup_wpa(struct hostapd_data *hapd)
	465	{
	466	struct wpa_auth_config _conf;
	467	struct wpa_auth_callbacks cb;
	468	const u8 *wpa_ie;
	469	size_t wpa_ie_len;
	470
	471	hostapd_wpa_auth_conf(hapd->conf, &_conf);
e4bf4db9 JM	472	if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_EAPOL_TX_STATUS)
e4bf4db9 JM	473	_conf.tx_status = 1;
c442055e JM	474	os_memset(&cb, 0, sizeof(cb));
	475	cb.ctx = hapd;
	476	cb.logger = hostapd_wpa_auth_logger;
	477	cb.disconnect = hostapd_wpa_auth_disconnect;
	478	cb.mic_failure_report = hostapd_wpa_auth_mic_failure_report;
	479	cb.set_eapol = hostapd_wpa_auth_set_eapol;
	480	cb.get_eapol = hostapd_wpa_auth_get_eapol;
	481	cb.get_psk = hostapd_wpa_auth_get_psk;
	482	cb.get_msk = hostapd_wpa_auth_get_msk;
	483	cb.set_key = hostapd_wpa_auth_set_key;
	484	cb.get_seqnum = hostapd_wpa_auth_get_seqnum;
	485	cb.send_eapol = hostapd_wpa_auth_send_eapol;
	486	cb.for_each_sta = hostapd_wpa_auth_for_each_sta;
	487	cb.for_each_auth = hostapd_wpa_auth_for_each_auth;
	488	cb.send_ether = hostapd_wpa_auth_send_ether;
	489	#ifdef CONFIG_IEEE80211R
	490	cb.send_ft_action = hostapd_wpa_auth_send_ft_action;
	491	cb.add_sta = hostapd_wpa_auth_add_sta;
	492	#endif /* CONFIG_IEEE80211R */
	493	hapd->wpa_auth = wpa_init(hapd->own_addr, &_conf, &cb);
	494	if (hapd->wpa_auth == NULL) {
	495	wpa_printf(MSG_ERROR, "WPA initialization failed.");
	496	return -1;
	497	}
	498
	499	if (hostapd_set_privacy(hapd, 1)) {
	500	wpa_printf(MSG_ERROR, "Could not set PrivacyInvoked "
	501	"for interface %s", hapd->conf->iface);
	502	return -1;
	503	}
	504
	505	wpa_ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &wpa_ie_len);
	506	if (hostapd_set_generic_elem(hapd, wpa_ie, wpa_ie_len)) {
	507	wpa_printf(MSG_ERROR, "Failed to configure WPA IE for "
	508	"the kernel driver.");
	509	return -1;
	510	}
	511
	512	if (rsn_preauth_iface_init(hapd)) {
	513	wpa_printf(MSG_ERROR, "Initialization of RSN "
	514	"pre-authentication failed.");
	515	return -1;
	516	}
	517
	518	#ifdef CONFIG_IEEE80211R
	519	if (!hostapd_drv_none(hapd)) {
22208211 JM	520	hapd->l2 = l2_packet_init(hapd->conf->bridge[0] ?
	521	hapd->conf->bridge :
	522	hapd->conf->iface, NULL, ETH_P_RRB,
7e031850	523	hostapd_rrb_receive, hapd, 1);
c442055e JM	524	if (hapd->l2 == NULL &&
	525	(hapd->driver == NULL \|\|
	526	hapd->driver->send_ether == NULL)) {
	527	wpa_printf(MSG_ERROR, "Failed to open l2_packet "
	528	"interface");
	529	return -1;
	530	}
	531	}
	532	#endif /* CONFIG_IEEE80211R */
	533
	534	return 0;
	535
	536	}
	537
	538
	539	void hostapd_reconfig_wpa(struct hostapd_data *hapd)
	540	{
	541	struct wpa_auth_config wpa_auth_conf;
	542	hostapd_wpa_auth_conf(hapd->conf, &wpa_auth_conf);
	543	wpa_reconfig(hapd->wpa_auth, &wpa_auth_conf);
	544	}
	545
	546
	547	void hostapd_deinit_wpa(struct hostapd_data *hapd)
	548	{
01a17491	549	ieee80211_tkip_countermeasures_deinit(hapd);
c442055e JM	550	rsn_preauth_iface_deinit(hapd);
	551	if (hapd->wpa_auth) {
	552	wpa_deinit(hapd->wpa_auth);
	553	hapd->wpa_auth = NULL;
	554
	555	if (hostapd_set_privacy(hapd, 0)) {
	556	wpa_printf(MSG_DEBUG, "Could not disable "
	557	"PrivacyInvoked for interface %s",
	558	hapd->conf->iface);
	559	}
	560
	561	if (hostapd_set_generic_elem(hapd, (u8 *) "", 0)) {
	562	wpa_printf(MSG_DEBUG, "Could not remove generic "
	563	"information element from interface %s",
	564	hapd->conf->iface);
	565	}
	566	}
	567	ieee802_1x_deinit(hapd);
	568
	569	#ifdef CONFIG_IEEE80211R
	570	l2_packet_deinit(hapd->l2);
	571	#endif /* CONFIG_IEEE80211R */
	572	}