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

/*
 * hostapd / WPA authenticator glue code
 * Copyright (c) 2002-2009, 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 "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 "hostapd.h"
#include "ieee802_1x.h"
#include "preauth_auth.h"
#include "sta_info.h"
#include "tkip_countermeasures.h"
#include "wpa_auth.h"
#include "driver_i.h"


static void hostapd_wpa_auth_conf(struct hostapd_bss_config *conf,
				  struct wpa_auth_config *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->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;
#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;
	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, 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 hapd->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;
	return hapd->drv.send_eapol(hapd, addr, data, data_len, encrypt);
}


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 (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);
}


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;

	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;
	return l2_packet_send(hapd->l2, dst, proto, data, data_len);
}


#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 = hapd->drv.send_mgmt_frame(hapd, (u8 *) m, mlen);
	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)
		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;
	wpa_ft_rrb_rx(hapd->wpa_auth, src_addr, buf, len);
}

#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);
	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->iface, NULL, ETH_P_RRB,
					  hostapd_rrb_receive, hapd, 0);
		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)
{
	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	/*
	2	* hostapd / WPA authenticator glue code
	3	* Copyright (c) 2002-2009, Jouni Malinen <j@w1.fi>
	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
	15	#include "utils/includes.h"
	16
	17	#include "utils/common.h"
	18	#include "common/ieee802_11_defs.h"
	19	#include "eapol_auth/eapol_auth_sm.h"
	20	#include "eapol_auth/eapol_auth_sm_i.h"
	21	#include "eap_server/eap.h"
	22	#include "l2_packet/l2_packet.h"
6226e38d JM	23	#include "hostapd.h"
	24	#include "ieee802_1x.h"
	25	#include "preauth_auth.h"
	26	#include "sta_info.h"
	27	#include "tkip_countermeasures.h"
	28	#include "wpa_auth.h"
c442055e JM	29	#include "driver_i.h"
	30
	31
	32	static void hostapd_wpa_auth_conf(struct hostapd_bss_config *conf,
	33	struct wpa_auth_config *wconf)
	34	{
	35	wconf->wpa = conf->wpa;
	36	wconf->wpa_key_mgmt = conf->wpa_key_mgmt;
	37	wconf->wpa_pairwise = conf->wpa_pairwise;
	38	wconf->wpa_group = conf->wpa_group;
	39	wconf->wpa_group_rekey = conf->wpa_group_rekey;
	40	wconf->wpa_strict_rekey = conf->wpa_strict_rekey;
	41	wconf->wpa_gmk_rekey = conf->wpa_gmk_rekey;
	42	wconf->wpa_ptk_rekey = conf->wpa_ptk_rekey;
	43	wconf->rsn_pairwise = conf->rsn_pairwise;
	44	wconf->rsn_preauth = conf->rsn_preauth;
	45	wconf->eapol_version = conf->eapol_version;
	46	wconf->peerkey = conf->peerkey;
	47	wconf->wmm_enabled = conf->wmm_enabled;
	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;
	71	#endif /* CONFIG_IEEE80211R */
	72	}
	73
	74
	75	static void hostapd_wpa_auth_logger(void ctx, const u8 addr,
	76	logger_level level, const char *txt)
	77	{
	78	#ifndef CONFIG_NO_HOSTAPD_LOGGER
	79	struct hostapd_data *hapd = ctx;
	80	int hlevel;
	81
	82	switch (level) {
	83	case LOGGER_WARNING:
	84	hlevel = HOSTAPD_LEVEL_WARNING;
	85	break;
	86	case LOGGER_INFO:
	87	hlevel = HOSTAPD_LEVEL_INFO;
	88	break;
	89	case LOGGER_DEBUG:
	90	default:
	91	hlevel = HOSTAPD_LEVEL_DEBUG;
	92	break;
93	}
94
95	hostapd_logger(hapd, addr, HOSTAPD_MODULE_WPA, hlevel, "%s", txt);
96	#endif /* CONFIG_NO_HOSTAPD_LOGGER */
97	}
98
99
100	static void hostapd_wpa_auth_disconnect(void ctx, const u8 addr,
101	u16 reason)
102	{
103	struct hostapd_data *hapd = ctx;
104	wpa_printf(MSG_DEBUG, "%s: WPA authenticator requests disconnect: "
105	"STA " MACSTR " reason %d",
106	__func__, MAC2STR(addr), reason);
107	ap_sta_disconnect(hapd, NULL, addr, reason);
108	}
109
110
111	static void hostapd_wpa_auth_mic_failure_report(void ctx, const u8 addr)
112	{
113	struct hostapd_data *hapd = ctx;
114	michael_mic_failure(hapd, addr, 0);
115	}
116
117
118	static void hostapd_wpa_auth_set_eapol(void ctx, const u8 addr,
119	wpa_eapol_variable var, int value)
120	{
121	struct hostapd_data *hapd = ctx;
122	struct sta_info *sta = ap_get_sta(hapd, addr);
123	if (sta == NULL)
124	return;
125	switch (var) {
126	case WPA_EAPOL_portEnabled:
127	ieee802_1x_notify_port_enabled(sta->eapol_sm, value);
128	break;
129	case WPA_EAPOL_portValid:
130	ieee802_1x_notify_port_valid(sta->eapol_sm, value);
131	break;
132	case WPA_EAPOL_authorized:
133	ieee802_1x_set_sta_authorized(hapd, sta, value);
134	break;
135	case WPA_EAPOL_portControl_Auto:
136	if (sta->eapol_sm)
137	sta->eapol_sm->portControl = Auto;
138	break;
139	case WPA_EAPOL_keyRun:
140	if (sta->eapol_sm)
141	sta->eapol_sm->keyRun = value ? TRUE : FALSE;
142	break;
143	case WPA_EAPOL_keyAvailable:
144	if (sta->eapol_sm)
145	sta->eapol_sm->eap_if->eapKeyAvailable =
146	value ? TRUE : FALSE;
147	break;
148	case WPA_EAPOL_keyDone:
149	if (sta->eapol_sm)
150	sta->eapol_sm->keyDone = value ? TRUE : FALSE;
151	break;
152	case WPA_EAPOL_inc_EapolFramesTx:
153	if (sta->eapol_sm)
154	sta->eapol_sm->dot1xAuthEapolFramesTx++;
155	break;
156	}
157	}
158
159
160	static int hostapd_wpa_auth_get_eapol(void ctx, const u8 addr,
161	wpa_eapol_variable var)
162	{
163	struct hostapd_data *hapd = ctx;
164	struct sta_info *sta = ap_get_sta(hapd, addr);
165	if (sta == NULL \|\| sta->eapol_sm == NULL)
166	return -1;
167	switch (var) {
168	case WPA_EAPOL_keyRun:
169	return sta->eapol_sm->keyRun;
170	case WPA_EAPOL_keyAvailable:
171	return sta->eapol_sm->eap_if->eapKeyAvailable;
172	default:
173	return -1;
174	}
175	}
176
177
178	static const u8 * hostapd_wpa_auth_get_psk(void ctx, const u8 addr,
179	const u8 *prev_psk)
180	{
181	struct hostapd_data *hapd = ctx;
182	return hostapd_get_psk(hapd->conf, addr, prev_psk);
183	}
184
185
186	static int hostapd_wpa_auth_get_msk(void ctx, const u8 addr, u8 *msk,
187	size_t *len)
188	{
189	struct hostapd_data *hapd = ctx;
190	const u8 *key;
191	size_t keylen;
192	struct sta_info *sta;
193
194	sta = ap_get_sta(hapd, addr);
195	if (sta == NULL)
196	return -1;
197
198	key = ieee802_1x_get_key(sta->eapol_sm, &keylen);
199	if (key == NULL)
200	return -1;
201
202	if (keylen > *len)
203	keylen = *len;
204	os_memcpy(msk, key, keylen);
205	*len = keylen;
206
207	return 0;
208	}
209
210
211	static int hostapd_wpa_auth_set_key(void *ctx, int vlan_id, wpa_alg alg,
212	const u8 addr, int idx, u8 key,
213	size_t key_len)
214	{
215	struct hostapd_data *hapd = ctx;
216	const char *ifname = hapd->conf->iface;
217
218	if (vlan_id > 0) {
219	ifname = hostapd_get_vlan_id_ifname(hapd->conf->vlan, vlan_id);
220	if (ifname == NULL)
221	return -1;
222	}
223
224	return hapd->drv.set_key(ifname, hapd, alg, addr, idx, 1, NULL, 0,
225	key, key_len);
226	}
227
228
229	static int hostapd_wpa_auth_get_seqnum(void ctx, const u8 addr, int idx,
230	u8 *seq)
231	{
232	struct hostapd_data *hapd = ctx;
233	return hostapd_get_seqnum(hapd->conf->iface, hapd, addr, idx, seq);
234	}
235
236
237	static int hostapd_wpa_auth_send_eapol(void ctx, const u8 addr,
238	const u8 *data, size_t data_len,
239	int encrypt)
240	{
241	struct hostapd_data *hapd = ctx;
242	return hapd->drv.send_eapol(hapd, addr, data, data_len, encrypt);
243	}
244
245
246	static int hostapd_wpa_auth_for_each_sta(
247	void ctx, int (cb)(struct wpa_state_machine sm, void ctx),
248	void *cb_ctx)
249	{
250	struct hostapd_data *hapd = ctx;
251	struct sta_info *sta;
252
253	for (sta = hapd->sta_list; sta; sta = sta->next) {
254	if (sta->wpa_sm && cb(sta->wpa_sm, cb_ctx))
255	return 1;
256	}
257	return 0;
258	}
259
260
261	struct wpa_auth_iface_iter_data {
262	int (cb)(struct wpa_authenticator sm, void *ctx);
263	void *cb_ctx;
264	};
265
266	static int wpa_auth_iface_iter(struct hostapd_iface iface, void ctx)
267	{
268	struct wpa_auth_iface_iter_data *data = ctx;
269	size_t i;
270	for (i = 0; i < iface->num_bss; i++) {
271	if (data->cb(iface->bss[i]->wpa_auth, data->cb_ctx))
272	return 1;
273	}
274	return 0;
275	}
276
277
278	static int hostapd_wpa_auth_for_each_auth(
279	void ctx, int (cb)(struct wpa_authenticator sm, void ctx),
280	void *cb_ctx)
281	{
282	struct hostapd_data *hapd = ctx;
283	struct wpa_auth_iface_iter_data data;
1b56c26c JM	284	if (hapd->iface->for_each_interface == NULL)
1b56c26c JM	285	return -1;
c442055e JM	286	data.cb = cb;
c442055e JM	287	data.cb_ctx = cb_ctx;
1b56c26c JM	288	return hapd->iface->for_each_interface(hapd->iface->interfaces,
1b56c26c JM	289	wpa_auth_iface_iter, &data);
c442055e JM	290	}
	291
	292
	293	static int hostapd_wpa_auth_send_ether(void ctx, const u8 dst, u16 proto,
	294	const u8 *data, size_t data_len)
	295	{
	296	struct hostapd_data *hapd = ctx;
	297
	298	if (hapd->driver && hapd->driver->send_ether)
	299	return hapd->driver->send_ether(hapd->drv_priv, dst,
	300	hapd->own_addr, proto,
	301	data, data_len);
	302	if (hapd->l2 == NULL)
	303	return -1;
	304	return l2_packet_send(hapd->l2, dst, proto, data, data_len);
	305	}
	306
	307
	308	#ifdef CONFIG_IEEE80211R
	309
	310	static int hostapd_wpa_auth_send_ft_action(void ctx, const u8 dst,
	311	const u8 *data, size_t data_len)
	312	{
	313	struct hostapd_data *hapd = ctx;
	314	int res;
	315	struct ieee80211_mgmt *m;
	316	size_t mlen;
	317	struct sta_info *sta;
	318
	319	sta = ap_get_sta(hapd, dst);
	320	if (sta == NULL \|\| sta->wpa_sm == NULL)
	321	return -1;
	322
	323	m = os_zalloc(sizeof(*m) + data_len);
	324	if (m == NULL)
	325	return -1;
	326	mlen = ((u8 ) &m->u - (u8 ) m) + data_len;
	327	m->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
	328	WLAN_FC_STYPE_ACTION);
	329	os_memcpy(m->da, dst, ETH_ALEN);
	330	os_memcpy(m->sa, hapd->own_addr, ETH_ALEN);
	331	os_memcpy(m->bssid, hapd->own_addr, ETH_ALEN);
	332	os_memcpy(&m->u, data, data_len);
	333
	334	res = hapd->drv.send_mgmt_frame(hapd, (u8 *) m, mlen);
	335	os_free(m);
	336	return res;
	337	}
	338
	339
	340	static struct wpa_state_machine *
	341	hostapd_wpa_auth_add_sta(void ctx, const u8 sta_addr)
	342	{
	343	struct hostapd_data *hapd = ctx;
	344	struct sta_info *sta;
	345
	346	sta = ap_sta_add(hapd, sta_addr);
	347	if (sta == NULL)
	348	return NULL;
	349	if (sta->wpa_sm)
	350	return sta->wpa_sm;
	351
	352	sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, sta->addr);
	353	if (sta->wpa_sm == NULL) {
354	ap_free_sta(hapd, sta);
355	return NULL;
356	}
357	sta->auth_alg = WLAN_AUTH_FT;
358
359	return sta->wpa_sm;
360	}
361
362
363	static void hostapd_rrb_receive(void ctx, const u8 src_addr, const u8 *buf,
364	size_t len)
365	{
366	struct hostapd_data *hapd = ctx;
367	wpa_ft_rrb_rx(hapd->wpa_auth, src_addr, buf, len);
368	}
369
370	#endif /* CONFIG_IEEE80211R */
371
372
373	int hostapd_setup_wpa(struct hostapd_data *hapd)
374	{
375	struct wpa_auth_config _conf;
376	struct wpa_auth_callbacks cb;
377	const u8 *wpa_ie;
378	size_t wpa_ie_len;
379
380	hostapd_wpa_auth_conf(hapd->conf, &_conf);
381	os_memset(&cb, 0, sizeof(cb));
382	cb.ctx = hapd;
383	cb.logger = hostapd_wpa_auth_logger;
384	cb.disconnect = hostapd_wpa_auth_disconnect;
385	cb.mic_failure_report = hostapd_wpa_auth_mic_failure_report;
386	cb.set_eapol = hostapd_wpa_auth_set_eapol;
387	cb.get_eapol = hostapd_wpa_auth_get_eapol;
388	cb.get_psk = hostapd_wpa_auth_get_psk;
389	cb.get_msk = hostapd_wpa_auth_get_msk;
390	cb.set_key = hostapd_wpa_auth_set_key;
391	cb.get_seqnum = hostapd_wpa_auth_get_seqnum;
392	cb.send_eapol = hostapd_wpa_auth_send_eapol;
393	cb.for_each_sta = hostapd_wpa_auth_for_each_sta;
394	cb.for_each_auth = hostapd_wpa_auth_for_each_auth;
395	cb.send_ether = hostapd_wpa_auth_send_ether;
396	#ifdef CONFIG_IEEE80211R
397	cb.send_ft_action = hostapd_wpa_auth_send_ft_action;
398	cb.add_sta = hostapd_wpa_auth_add_sta;
399	#endif /* CONFIG_IEEE80211R */
400	hapd->wpa_auth = wpa_init(hapd->own_addr, &_conf, &cb);
401	if (hapd->wpa_auth == NULL) {
402	wpa_printf(MSG_ERROR, "WPA initialization failed.");
403	return -1;
404	}
405
406	if (hostapd_set_privacy(hapd, 1)) {
407	wpa_printf(MSG_ERROR, "Could not set PrivacyInvoked "
408	"for interface %s", hapd->conf->iface);
409	return -1;
410	}
411
412	wpa_ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &wpa_ie_len);
413	if (hostapd_set_generic_elem(hapd, wpa_ie, wpa_ie_len)) {
414	wpa_printf(MSG_ERROR, "Failed to configure WPA IE for "
415	"the kernel driver.");
416	return -1;
417	}
418
419	if (rsn_preauth_iface_init(hapd)) {
420	wpa_printf(MSG_ERROR, "Initialization of RSN "
421	"pre-authentication failed.");
422	return -1;
423	}
424
425	#ifdef CONFIG_IEEE80211R
426	if (!hostapd_drv_none(hapd)) {
427	hapd->l2 = l2_packet_init(hapd->conf->iface, NULL, ETH_P_RRB,
428	hostapd_rrb_receive, hapd, 0);
429	if (hapd->l2 == NULL &&
430	(hapd->driver == NULL \|\|
431	hapd->driver->send_ether == NULL)) {
432	wpa_printf(MSG_ERROR, "Failed to open l2_packet "
433	"interface");
434	return -1;
435	}
436	}
437	#endif /* CONFIG_IEEE80211R */
438
439	return 0;
440
441	}
442
443
444	void hostapd_reconfig_wpa(struct hostapd_data *hapd)
445	{
446	struct wpa_auth_config wpa_auth_conf;
447	hostapd_wpa_auth_conf(hapd->conf, &wpa_auth_conf);
448	wpa_reconfig(hapd->wpa_auth, &wpa_auth_conf);
449	}
450
451
452	void hostapd_deinit_wpa(struct hostapd_data *hapd)
453	{
454	rsn_preauth_iface_deinit(hapd);
455	if (hapd->wpa_auth) {
456	wpa_deinit(hapd->wpa_auth);
457	hapd->wpa_auth = NULL;
458
459	if (hostapd_set_privacy(hapd, 0)) {
460	wpa_printf(MSG_DEBUG, "Could not disable "
461	"PrivacyInvoked for interface %s",
462	hapd->conf->iface);
463	}
464
465	if (hostapd_set_generic_elem(hapd, (u8 *) "", 0)) {
466	wpa_printf(MSG_DEBUG, "Could not remove generic "
467	"information element from interface %s",
468	hapd->conf->iface);
469	}
470	}
471	ieee802_1x_deinit(hapd);
472
473	#ifdef CONFIG_IEEE80211R
474	l2_packet_deinit(hapd->l2);
475	#endif /* CONFIG_IEEE80211R */
476	}