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

/*
 * hostapd / Callback functions for driver wrappers
 * 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 "radius/radius.h"
#include "drivers/driver.h"
#include "common/ieee802_11_defs.h"
#include "common/ieee802_11_common.h"
#include "common/wpa_ctrl.h"
#include "crypto/random.h"
#include "p2p/p2p.h"
#include "wps/wps.h"
#include "hostapd.h"
#include "ieee802_11.h"
#include "sta_info.h"
#include "accounting.h"
#include "tkip_countermeasures.h"
#include "iapp.h"
#include "ieee802_1x.h"
#include "wpa_auth.h"
#include "wmm.h"
#include "wps_hostapd.h"
#include "ap_config.h"


int hostapd_notif_assoc(struct hostapd_data *hapd, const u8 *addr,
			const u8 *ie, size_t ielen)
{
	struct sta_info *sta;
	int new_assoc, res;
	struct ieee802_11_elems elems;
#ifdef CONFIG_P2P
	const u8 *all_ies = ie;
	size_t all_ies_len = ielen;
#endif /* CONFIG_P2P */

	if (addr == NULL) {
		/*
		 * This could potentially happen with unexpected event from the
		 * driver wrapper. This was seen at least in one case where the
		 * driver ended up being set to station mode while hostapd was
		 * running, so better make sure we stop processing such an
		 * event here.
		 */
		wpa_printf(MSG_DEBUG, "hostapd_notif_assoc: Skip event with "
			   "no address");
		return -1;
	}
	random_add_randomness(addr, ETH_ALEN);

	hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
		       HOSTAPD_LEVEL_INFO, "associated");

	ieee802_11_parse_elems(ie, ielen, &elems, 0);
	if (elems.wps_ie) {
		ie = elems.wps_ie - 2;
		ielen = elems.wps_ie_len + 2;
		wpa_printf(MSG_DEBUG, "STA included WPS IE in (Re)AssocReq");
	} else if (elems.rsn_ie) {
		ie = elems.rsn_ie - 2;
		ielen = elems.rsn_ie_len + 2;
		wpa_printf(MSG_DEBUG, "STA included RSN IE in (Re)AssocReq");
	} else if (elems.wpa_ie) {
		ie = elems.wpa_ie - 2;
		ielen = elems.wpa_ie_len + 2;
		wpa_printf(MSG_DEBUG, "STA included WPA IE in (Re)AssocReq");
	} else {
		ie = NULL;
		ielen = 0;
		wpa_printf(MSG_DEBUG, "STA did not include WPS/RSN/WPA IE in "
			   "(Re)AssocReq");
	}

	sta = ap_get_sta(hapd, addr);
	if (sta) {
		accounting_sta_stop(hapd, sta);
	} else {
		sta = ap_sta_add(hapd, addr);
		if (sta == NULL)
			return -1;
	}
	sta->flags &= ~(WLAN_STA_WPS | WLAN_STA_MAYBE_WPS);

#ifdef CONFIG_P2P
	if (elems.p2p) {
		wpabuf_free(sta->p2p_ie);
		sta->p2p_ie = ieee802_11_vendor_ie_concat(all_ies, all_ies_len,
							  P2P_IE_VENDOR_TYPE);
	}
#endif /* CONFIG_P2P */

	if (hapd->conf->wpa) {
		if (ie == NULL || ielen == 0) {
			if (hapd->conf->wps_state) {
				wpa_printf(MSG_DEBUG, "STA did not include "
					   "WPA/RSN IE in (Re)Association "
					   "Request - possible WPS use");
				sta->flags |= WLAN_STA_MAYBE_WPS;
				goto skip_wpa_check;
			}

			wpa_printf(MSG_DEBUG, "No WPA/RSN IE from STA");
			return -1;
		}
		if (hapd->conf->wps_state && ie[0] == 0xdd && ie[1] >= 4 &&
		    os_memcmp(ie + 2, "\x00\x50\xf2\x04", 4) == 0) {
			sta->flags |= WLAN_STA_WPS;
			goto skip_wpa_check;
		}

		if (sta->wpa_sm == NULL)
			sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
							sta->addr);
		if (sta->wpa_sm == NULL) {
			wpa_printf(MSG_ERROR, "Failed to initialize WPA state "
				   "machine");
			return -1;
		}
		res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
					  ie, ielen, NULL, 0);
		if (res != WPA_IE_OK) {
			int resp;
			wpa_printf(MSG_DEBUG, "WPA/RSN information element "
				   "rejected? (res %u)", res);
			wpa_hexdump(MSG_DEBUG, "IE", ie, ielen);
			if (res == WPA_INVALID_GROUP)
				resp = WLAN_REASON_GROUP_CIPHER_NOT_VALID;
			else if (res == WPA_INVALID_PAIRWISE)
				resp = WLAN_REASON_PAIRWISE_CIPHER_NOT_VALID;
			else if (res == WPA_INVALID_AKMP)
				resp = WLAN_REASON_AKMP_NOT_VALID;
#ifdef CONFIG_IEEE80211W
			else if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION)
				resp = WLAN_REASON_INVALID_IE;
			else if (res == WPA_INVALID_MGMT_GROUP_CIPHER)
				resp = WLAN_REASON_GROUP_CIPHER_NOT_VALID;
#endif /* CONFIG_IEEE80211W */
			else
				resp = WLAN_REASON_INVALID_IE;
			hapd->drv.sta_disassoc(hapd, sta->addr, resp);
			ap_free_sta(hapd, sta);
			return -1;
		}
	} else if (hapd->conf->wps_state) {
#ifdef CONFIG_WPS_STRICT
		struct wpabuf *wps;
		wps = ieee802_11_vendor_ie_concat(ie, ielen,
						  WPS_IE_VENDOR_TYPE);
		if (wps && wps_validate_assoc_req(wps) < 0) {
			hapd->drv.sta_disassoc(hapd, sta->addr,
					       WLAN_REASON_INVALID_IE);
			ap_free_sta(hapd, sta);
			wpabuf_free(wps);
			return -1;
		}
		wpabuf_free(wps);
#endif /* CONFIG_WPS_STRICT */
		if (ie && ielen > 4 && ie[0] == 0xdd && ie[1] >= 4 &&
		    os_memcmp(ie + 2, "\x00\x50\xf2\x04", 4) == 0) {
			sta->flags |= WLAN_STA_WPS;
		} else
			sta->flags |= WLAN_STA_MAYBE_WPS;
	}
skip_wpa_check:

	new_assoc = (sta->flags & WLAN_STA_ASSOC) == 0;
	sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC;
	wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC);

	hostapd_new_assoc_sta(hapd, sta, !new_assoc);

	ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);

#ifdef CONFIG_P2P
	p2p_group_notif_assoc(hapd->p2p_group, sta->addr,
			      all_ies, all_ies_len);
#endif /* CONFIG_P2P */

	return 0;
}


void hostapd_notif_disassoc(struct hostapd_data *hapd, const u8 *addr)
{
	struct sta_info *sta;

	if (addr == NULL) {
		/*
		 * This could potentially happen with unexpected event from the
		 * driver wrapper. This was seen at least in one case where the
		 * driver ended up reporting a station mode event while hostapd
		 * was running, so better make sure we stop processing such an
		 * event here.
		 */
		wpa_printf(MSG_DEBUG, "hostapd_notif_disassoc: Skip event "
			   "with no address");
		return;
	}

	hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
		       HOSTAPD_LEVEL_INFO, "disassociated");

	sta = ap_get_sta(hapd, addr);
	if (sta == NULL) {
		wpa_printf(MSG_DEBUG, "Disassociation notification for "
			   "unknown STA " MACSTR, MAC2STR(addr));
		return;
	}

	sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
	wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED MACSTR,
		MAC2STR(sta->addr));
	wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
	sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
	ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
	ap_free_sta(hapd, sta);
}


#ifdef HOSTAPD

#ifdef NEED_AP_MLME

static const u8 * get_hdr_bssid(const struct ieee80211_hdr *hdr, size_t len)
{
	u16 fc, type, stype;

	/*
	 * PS-Poll frames are 16 bytes. All other frames are
	 * 24 bytes or longer.
	 */
	if (len < 16)
		return NULL;

	fc = le_to_host16(hdr->frame_control);
	type = WLAN_FC_GET_TYPE(fc);
	stype = WLAN_FC_GET_STYPE(fc);

	switch (type) {
	case WLAN_FC_TYPE_DATA:
		if (len < 24)
			return NULL;
		switch (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) {
		case WLAN_FC_FROMDS | WLAN_FC_TODS:
		case WLAN_FC_TODS:
			return hdr->addr1;
		case WLAN_FC_FROMDS:
			return hdr->addr2;
		default:
			return NULL;
		}
	case WLAN_FC_TYPE_CTRL:
		if (stype != WLAN_FC_STYPE_PSPOLL)
			return NULL;
		return hdr->addr1;
	case WLAN_FC_TYPE_MGMT:
		return hdr->addr3;
	default:
		return NULL;
	}
}


#define HAPD_BROADCAST ((struct hostapd_data *) -1)

static struct hostapd_data * get_hapd_bssid(struct hostapd_iface *iface,
					    const u8 *bssid)
{
	size_t i;

	if (bssid == NULL)
		return NULL;
	if (bssid[0] == 0xff && bssid[1] == 0xff && bssid[2] == 0xff &&
	    bssid[3] == 0xff && bssid[4] == 0xff && bssid[5] == 0xff)
		return HAPD_BROADCAST;

	for (i = 0; i < iface->num_bss; i++) {
		if (os_memcmp(bssid, iface->bss[i]->own_addr, ETH_ALEN) == 0)
			return iface->bss[i];
	}

	return NULL;
}


static void hostapd_rx_from_unknown_sta(struct hostapd_data *hapd,
					const u8 *frame, size_t len)
{
	const struct ieee80211_hdr *hdr = (const struct ieee80211_hdr *) frame;
	u16 fc = le_to_host16(hdr->frame_control);
	hapd = get_hapd_bssid(hapd->iface, get_hdr_bssid(hdr, len));
	if (hapd == NULL || hapd == HAPD_BROADCAST)
		return;

	ieee802_11_rx_from_unknown(hapd, hdr->addr2,
				   (fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) ==
				   (WLAN_FC_TODS | WLAN_FC_FROMDS));
}


static void hostapd_mgmt_rx(struct hostapd_data *hapd, struct rx_mgmt *rx_mgmt)
{
	struct hostapd_iface *iface = hapd->iface;
	const struct ieee80211_hdr *hdr;
	const u8 *bssid;
	struct hostapd_frame_info fi;

	hdr = (const struct ieee80211_hdr *) rx_mgmt->frame;
	bssid = get_hdr_bssid(hdr, rx_mgmt->frame_len);
	if (bssid == NULL)
		return;

	hapd = get_hapd_bssid(iface, bssid);
	if (hapd == NULL) {
		u16 fc;
		fc = le_to_host16(hdr->frame_control);

		/*
		 * Drop frames to unknown BSSIDs except for Beacon frames which
		 * could be used to update neighbor information.
		 */
		if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
		    WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
			hapd = iface->bss[0];
		else
			return;
	}

	os_memset(&fi, 0, sizeof(fi));
	fi.datarate = rx_mgmt->datarate;
	fi.ssi_signal = rx_mgmt->ssi_signal;

	if (hapd == HAPD_BROADCAST) {
		size_t i;
		for (i = 0; i < iface->num_bss; i++)
			ieee802_11_mgmt(iface->bss[i], rx_mgmt->frame,
					rx_mgmt->frame_len, &fi);
	} else
		ieee802_11_mgmt(hapd, rx_mgmt->frame, rx_mgmt->frame_len, &fi);

	random_add_randomness(&fi, sizeof(fi));
}


static void hostapd_mgmt_tx_cb(struct hostapd_data *hapd, const u8 *buf,
			       size_t len, u16 stype, int ok)
{
	struct ieee80211_hdr *hdr;
	hdr = (struct ieee80211_hdr *) buf;
	hapd = get_hapd_bssid(hapd->iface, get_hdr_bssid(hdr, len));
	if (hapd == NULL || hapd == HAPD_BROADCAST)
		return;
	ieee802_11_mgmt_cb(hapd, buf, len, stype, ok);
}

#endif /* NEED_AP_MLME */


static int hostapd_probe_req_rx(struct hostapd_data *hapd, const u8 *sa,
				const u8 *ie, size_t ie_len)
{
	size_t i;
	int ret = 0;

	if (sa)
		random_add_randomness(sa, ETH_ALEN);
	for (i = 0; hapd->probereq_cb && i < hapd->num_probereq_cb; i++) {
		if (hapd->probereq_cb[i].cb(hapd->probereq_cb[i].ctx,
					    sa, ie, ie_len) > 0) {
			ret = 1;
			break;
		}
	}
	return ret;
}


static int hostapd_event_new_sta(struct hostapd_data *hapd, const u8 *addr)
{
	struct sta_info *sta = ap_get_sta(hapd, addr);
	if (sta)
		return 0;

	wpa_printf(MSG_DEBUG, "Data frame from unknown STA " MACSTR
		   " - adding a new STA", MAC2STR(addr));
	sta = ap_sta_add(hapd, addr);
	if (sta) {
		hostapd_new_assoc_sta(hapd, sta, 0);
	} else {
		wpa_printf(MSG_DEBUG, "Failed to add STA entry for " MACSTR,
			   MAC2STR(addr));
		return -1;
	}

	return 0;
}


static void hostapd_event_eapol_rx(struct hostapd_data *hapd, const u8 *src,
				   const u8 *data, size_t data_len)
{
	struct hostapd_iface *iface = hapd->iface;
	size_t j;

	for (j = 0; j < iface->num_bss; j++) {
		if (ap_get_sta(iface->bss[j], src)) {
			hapd = iface->bss[j];
			break;
		}
	}

	ieee802_1x_receive(hapd, src, data, data_len);
}


void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
			  union wpa_event_data *data)
{
	struct hostapd_data *hapd = ctx;

	switch (event) {
	case EVENT_MICHAEL_MIC_FAILURE:
		michael_mic_failure(hapd, data->michael_mic_failure.src, 1);
		break;
	case EVENT_SCAN_RESULTS:
		if (hapd->iface->scan_cb)
			hapd->iface->scan_cb(hapd->iface);
		break;
#ifdef CONFIG_IEEE80211R
	case EVENT_FT_RRB_RX:
		wpa_ft_rrb_rx(hapd->wpa_auth, data->ft_rrb_rx.src,
			      data->ft_rrb_rx.data, data->ft_rrb_rx.data_len);
		break;
#endif /* CONFIG_IEEE80211R */
	case EVENT_WPS_BUTTON_PUSHED:
		hostapd_wps_button_pushed(hapd);
		break;
#ifdef NEED_AP_MLME
	case EVENT_TX_STATUS:
		switch (data->tx_status.type) {
		case WLAN_FC_TYPE_MGMT:
			hostapd_mgmt_tx_cb(hapd, data->tx_status.data,
					   data->tx_status.data_len,
					   data->tx_status.stype,
					   data->tx_status.ack);
			break;
		case WLAN_FC_TYPE_DATA:
			hostapd_tx_status(hapd, data->tx_status.dst,
					  data->tx_status.data,
					  data->tx_status.data_len,
					  data->tx_status.ack);
			break;
		}
		break;
	case EVENT_RX_FROM_UNKNOWN:
		hostapd_rx_from_unknown_sta(hapd, data->rx_from_unknown.frame,
					    data->rx_from_unknown.len);
		break;
	case EVENT_RX_MGMT:
		hostapd_mgmt_rx(hapd, &data->rx_mgmt);
		break;
#endif /* NEED_AP_MLME */
	case EVENT_RX_PROBE_REQ:
		hostapd_probe_req_rx(hapd, data->rx_probe_req.sa,
				     data->rx_probe_req.ie,
				     data->rx_probe_req.ie_len);
		break;
	case EVENT_NEW_STA:
		hostapd_event_new_sta(hapd, data->new_sta.addr);
		break;
	case EVENT_EAPOL_RX:
		hostapd_event_eapol_rx(hapd, data->eapol_rx.src,
				       data->eapol_rx.data,
				       data->eapol_rx.data_len);
		break;
	case EVENT_ASSOC:
		hostapd_notif_assoc(hapd, data->assoc_info.addr,
				    data->assoc_info.req_ies,
				    data->assoc_info.req_ies_len);
		break;
	case EVENT_DISASSOC:
		if (data)
			hostapd_notif_disassoc(hapd, data->disassoc_info.addr);
		break;
	case EVENT_DEAUTH:
		if (data)
			hostapd_notif_disassoc(hapd, data->deauth_info.addr);
		break;
	default:
		wpa_printf(MSG_DEBUG, "Unknown event %d", event);
		break;
	}
}

#endif /* HOSTAPD */
Commit	Line	Data
b5b969e9 JM	1	/*
	2	* hostapd / Callback functions for driver wrappers
	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
6226e38d	15	#include "utils/includes.h"
b5b969e9	16
6226e38d	17	#include "utils/common.h"
b5b969e9	18	#include "radius/radius.h"
6e6e8c31	19	#include "drivers/driver.h"
81f4f619	20	#include "common/ieee802_11_defs.h"
c41a1095	21	#include "common/ieee802_11_common.h"
9a3cb18d	22	#include "common/wpa_ctrl.h"
bbb921da	23	#include "crypto/random.h"
ef796391	24	#include "p2p/p2p.h"
54f489be	25	#include "wps/wps.h"
6226e38d JM	26	#include "hostapd.h"
	27	#include "ieee802_11.h"
	28	#include "sta_info.h"
	29	#include "accounting.h"
	30	#include "tkip_countermeasures.h"
	31	#include "iapp.h"
	32	#include "ieee802_1x.h"
	33	#include "wpa_auth.h"
	34	#include "wmm.h"
	35	#include "wps_hostapd.h"
8b06c1ed	36	#include "ap_config.h"
b5b969e9 JM	37
b5b969e9 JM	38
b5b969e9 JM	39	int hostapd_notif_assoc(struct hostapd_data hapd, const u8 addr,
	40	const u8 *ie, size_t ielen)
	41	{
	42	struct sta_info *sta;
	43	int new_assoc, res;
c41a1095	44	struct ieee802_11_elems elems;
b305c684 JM	45	#ifdef CONFIG_P2P
	46	const u8 *all_ies = ie;
	47	size_t all_ies_len = ielen;
	48	#endif /* CONFIG_P2P */
b5b969e9	49
68532a9c JM	50	if (addr == NULL) {
	51	/*
	52	* This could potentially happen with unexpected event from the
	53	* driver wrapper. This was seen at least in one case where the
	54	* driver ended up being set to station mode while hostapd was
	55	* running, so better make sure we stop processing such an
	56	* event here.
	57	*/
	58	wpa_printf(MSG_DEBUG, "hostapd_notif_assoc: Skip event with "
	59	"no address");
	60	return -1;
	61	}
bbb921da	62	random_add_randomness(addr, ETH_ALEN);
68532a9c	63
b5b969e9 JM	64	hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
	65	HOSTAPD_LEVEL_INFO, "associated");
	66
c41a1095 JM	67	ieee802_11_parse_elems(ie, ielen, &elems, 0);
	68	if (elems.wps_ie) {
	69	ie = elems.wps_ie - 2;
	70	ielen = elems.wps_ie_len + 2;
	71	wpa_printf(MSG_DEBUG, "STA included WPS IE in (Re)AssocReq");
	72	} else if (elems.rsn_ie) {
	73	ie = elems.rsn_ie - 2;
	74	ielen = elems.rsn_ie_len + 2;
	75	wpa_printf(MSG_DEBUG, "STA included RSN IE in (Re)AssocReq");
	76	} else if (elems.wpa_ie) {
	77	ie = elems.wpa_ie - 2;
	78	ielen = elems.wpa_ie_len + 2;
	79	wpa_printf(MSG_DEBUG, "STA included WPA IE in (Re)AssocReq");
	80	} else {
	81	ie = NULL;
	82	ielen = 0;
	83	wpa_printf(MSG_DEBUG, "STA did not include WPS/RSN/WPA IE in "
	84	"(Re)AssocReq");
	85	}
	86
b5b969e9 JM	87	sta = ap_get_sta(hapd, addr);
	88	if (sta) {
	89	accounting_sta_stop(hapd, sta);
	90	} else {
	91	sta = ap_sta_add(hapd, addr);
	92	if (sta == NULL)
	93	return -1;
	94	}
	95	sta->flags &= ~(WLAN_STA_WPS \| WLAN_STA_MAYBE_WPS);
	96
b305c684 JM	97	#ifdef CONFIG_P2P
	98	if (elems.p2p) {
	99	wpabuf_free(sta->p2p_ie);
	100	sta->p2p_ie = ieee802_11_vendor_ie_concat(all_ies, all_ies_len,
	101	P2P_IE_VENDOR_TYPE);
	102	}
	103	#endif /* CONFIG_P2P */
	104
b5b969e9 JM	105	if (hapd->conf->wpa) {
	106	if (ie == NULL \|\| ielen == 0) {
	107	if (hapd->conf->wps_state) {
	108	wpa_printf(MSG_DEBUG, "STA did not include "
	109	"WPA/RSN IE in (Re)Association "
	110	"Request - possible WPS use");
	111	sta->flags \|= WLAN_STA_MAYBE_WPS;
	112	goto skip_wpa_check;
	113	}
	114
	115	wpa_printf(MSG_DEBUG, "No WPA/RSN IE from STA");
	116	return -1;
	117	}
	118	if (hapd->conf->wps_state && ie[0] == 0xdd && ie[1] >= 4 &&
	119	os_memcmp(ie + 2, "\x00\x50\xf2\x04", 4) == 0) {
	120	sta->flags \|= WLAN_STA_WPS;
	121	goto skip_wpa_check;
	122	}
	123
	124	if (sta->wpa_sm == NULL)
	125	sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
	126	sta->addr);
	127	if (sta->wpa_sm == NULL) {
	128	wpa_printf(MSG_ERROR, "Failed to initialize WPA state "
	129	"machine");
	130	return -1;
	131	}
	132	res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
	133	ie, ielen, NULL, 0);
	134	if (res != WPA_IE_OK) {
355d36a7	135	int resp;
b5b969e9 JM	136	wpa_printf(MSG_DEBUG, "WPA/RSN information element "
	137	"rejected? (res %u)", res);
	138	wpa_hexdump(MSG_DEBUG, "IE", ie, ielen);
355d36a7 AT	139	if (res == WPA_INVALID_GROUP)
	140	resp = WLAN_REASON_GROUP_CIPHER_NOT_VALID;
	141	else if (res == WPA_INVALID_PAIRWISE)
	142	resp = WLAN_REASON_PAIRWISE_CIPHER_NOT_VALID;
	143	else if (res == WPA_INVALID_AKMP)
	144	resp = WLAN_REASON_AKMP_NOT_VALID;
	145	#ifdef CONFIG_IEEE80211W
	146	else if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION)
	147	resp = WLAN_REASON_INVALID_IE;
	148	else if (res == WPA_INVALID_MGMT_GROUP_CIPHER)
	149	resp = WLAN_REASON_GROUP_CIPHER_NOT_VALID;
	150	#endif /* CONFIG_IEEE80211W */
	151	else
	152	resp = WLAN_REASON_INVALID_IE;
bdee6fce	153	hapd->drv.sta_disassoc(hapd, sta->addr, resp);
355d36a7	154	ap_free_sta(hapd, sta);
b5b969e9 JM	155	return -1;
b5b969e9 JM	156	}
a9aca28b	157	} else if (hapd->conf->wps_state) {
54f489be JM	158	#ifdef CONFIG_WPS_STRICT
	159	struct wpabuf *wps;
	160	wps = ieee802_11_vendor_ie_concat(ie, ielen,
	161	WPS_IE_VENDOR_TYPE);
	162	if (wps && wps_validate_assoc_req(wps) < 0) {
	163	hapd->drv.sta_disassoc(hapd, sta->addr,
	164	WLAN_REASON_INVALID_IE);
	165	ap_free_sta(hapd, sta);
	166	wpabuf_free(wps);
	167	return -1;
	168	}
	169	wpabuf_free(wps);
	170	#endif /* CONFIG_WPS_STRICT */
a9aca28b JM	171	if (ie && ielen > 4 && ie[0] == 0xdd && ie[1] >= 4 &&
	172	os_memcmp(ie + 2, "\x00\x50\xf2\x04", 4) == 0) {
	173	sta->flags \|= WLAN_STA_WPS;
	174	} else
	175	sta->flags \|= WLAN_STA_MAYBE_WPS;
b5b969e9 JM	176	}
	177	skip_wpa_check:
	178
	179	new_assoc = (sta->flags & WLAN_STA_ASSOC) == 0;
	180	sta->flags \|= WLAN_STA_AUTH \| WLAN_STA_ASSOC;
	181	wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC);
	182
	183	hostapd_new_assoc_sta(hapd, sta, !new_assoc);
	184
	185	ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
	186
ef796391	187	#ifdef CONFIG_P2P
3f4ce13f JM	188	p2p_group_notif_assoc(hapd->p2p_group, sta->addr,
3f4ce13f JM	189	all_ies, all_ies_len);
ef796391 JM	190	#endif /* CONFIG_P2P */
ef796391 JM	191
b5b969e9 JM	192	return 0;
	193	}
	194
	195
	196	void hostapd_notif_disassoc(struct hostapd_data hapd, const u8 addr)
	197	{
	198	struct sta_info *sta;
	199
83e843e8 JM	200	if (addr == NULL) {
	201	/*
	202	* This could potentially happen with unexpected event from the
	203	* driver wrapper. This was seen at least in one case where the
	204	* driver ended up reporting a station mode event while hostapd
	205	* was running, so better make sure we stop processing such an
	206	* event here.
	207	*/
	208	wpa_printf(MSG_DEBUG, "hostapd_notif_disassoc: Skip event "
	209	"with no address");
1f4c7b6b	210	return;
83e843e8 JM	211	}
83e843e8 JM	212
b5b969e9 JM	213	hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
	214	HOSTAPD_LEVEL_INFO, "disassociated");
	215
	216	sta = ap_get_sta(hapd, addr);
	217	if (sta == NULL) {
	218	wpa_printf(MSG_DEBUG, "Disassociation notification for "
	219	"unknown STA " MACSTR, MAC2STR(addr));
	220	return;
	221	}
	222
	223	sta->flags &= ~(WLAN_STA_AUTH \| WLAN_STA_ASSOC);
9a3cb18d JM	224	wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED MACSTR,
9a3cb18d JM	225	MAC2STR(sta->addr));
b5b969e9 JM	226	wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
	227	sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
	228	ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
	229	ap_free_sta(hapd, sta);
	230	}
	231
	232
f8b1f695 JM	233	#ifdef HOSTAPD
f8b1f695 JM	234
fe6bdb77	235	#ifdef NEED_AP_MLME
f8b1f695 JM	236
	237	static const u8 * get_hdr_bssid(const struct ieee80211_hdr *hdr, size_t len)
	238	{
	239	u16 fc, type, stype;
	240
	241	/*
	242	* PS-Poll frames are 16 bytes. All other frames are
	243	* 24 bytes or longer.
	244	*/
	245	if (len < 16)
	246	return NULL;
	247
	248	fc = le_to_host16(hdr->frame_control);
	249	type = WLAN_FC_GET_TYPE(fc);
	250	stype = WLAN_FC_GET_STYPE(fc);
	251
	252	switch (type) {
	253	case WLAN_FC_TYPE_DATA:
	254	if (len < 24)
	255	return NULL;
	256	switch (fc & (WLAN_FC_FROMDS \| WLAN_FC_TODS)) {
fbbfcbac	257	case WLAN_FC_FROMDS \| WLAN_FC_TODS:
f8b1f695 JM	258	case WLAN_FC_TODS:
	259	return hdr->addr1;
	260	case WLAN_FC_FROMDS:
	261	return hdr->addr2;
	262	default:
	263	return NULL;
	264	}
	265	case WLAN_FC_TYPE_CTRL:
	266	if (stype != WLAN_FC_STYPE_PSPOLL)
	267	return NULL;
	268	return hdr->addr1;
	269	case WLAN_FC_TYPE_MGMT:
	270	return hdr->addr3;
	271	default:
	272	return NULL;
	273	}
	274	}
	275
	276
	277	#define HAPD_BROADCAST ((struct hostapd_data *) -1)
	278
	279	static struct hostapd_data * get_hapd_bssid(struct hostapd_iface *iface,
	280	const u8 *bssid)
	281	{
	282	size_t i;
	283
	284	if (bssid == NULL)
	285	return NULL;
	286	if (bssid[0] == 0xff && bssid[1] == 0xff && bssid[2] == 0xff &&
	287	bssid[3] == 0xff && bssid[4] == 0xff && bssid[5] == 0xff)
	288	return HAPD_BROADCAST;
	289
	290	for (i = 0; i < iface->num_bss; i++) {
	291	if (os_memcmp(bssid, iface->bss[i]->own_addr, ETH_ALEN) == 0)
	292	return iface->bss[i];
	293	}
	294
	295	return NULL;
	296	}
	297
	298
	299	static void hostapd_rx_from_unknown_sta(struct hostapd_data *hapd,
0d9fc3d8	300	const u8 *frame, size_t len)
f8b1f695	301	{
0d9fc3d8	302	const struct ieee80211_hdr hdr = (const struct ieee80211_hdr ) frame;
fbbfcbac	303	u16 fc = le_to_host16(hdr->frame_control);
f8b1f695 JM	304	hapd = get_hapd_bssid(hapd->iface, get_hdr_bssid(hdr, len));
	305	if (hapd == NULL \|\| hapd == HAPD_BROADCAST)
	306	return;
	307
fbbfcbac FF	308	ieee802_11_rx_from_unknown(hapd, hdr->addr2,
	309	(fc & (WLAN_FC_TODS \| WLAN_FC_FROMDS)) ==
	310	(WLAN_FC_TODS \| WLAN_FC_FROMDS));
f8b1f695 JM	311	}
	312
	313
2a8b7416	314	static void hostapd_mgmt_rx(struct hostapd_data hapd, struct rx_mgmt rx_mgmt)
b5b969e9	315	{
4b9841d3	316	struct hostapd_iface *iface = hapd->iface;
b57e086c	317	const struct ieee80211_hdr *hdr;
4b9841d3	318	const u8 *bssid;
2a8b7416	319	struct hostapd_frame_info fi;
4b9841d3	320
2a8b7416 JM	321	hdr = (const struct ieee80211_hdr *) rx_mgmt->frame;
2a8b7416 JM	322	bssid = get_hdr_bssid(hdr, rx_mgmt->frame_len);
4b9841d3 JM	323	if (bssid == NULL)
	324	return;
	325
	326	hapd = get_hapd_bssid(iface, bssid);
	327	if (hapd == NULL) {
	328	u16 fc;
	329	fc = le_to_host16(hdr->frame_control);
	330
	331	/*
	332	* Drop frames to unknown BSSIDs except for Beacon frames which
	333	* could be used to update neighbor information.
	334	*/
	335	if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
	336	WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
	337	hapd = iface->bss[0];
	338	else
	339	return;
	340	}
	341
2a8b7416 JM	342	os_memset(&fi, 0, sizeof(fi));
	343	fi.datarate = rx_mgmt->datarate;
	344	fi.ssi_signal = rx_mgmt->ssi_signal;
	345
4b9841d3 JM	346	if (hapd == HAPD_BROADCAST) {
	347	size_t i;
	348	for (i = 0; i < iface->num_bss; i++)
2a8b7416 JM	349	ieee802_11_mgmt(iface->bss[i], rx_mgmt->frame,
2a8b7416 JM	350	rx_mgmt->frame_len, &fi);
4b9841d3	351	} else
2a8b7416	352	ieee802_11_mgmt(hapd, rx_mgmt->frame, rx_mgmt->frame_len, &fi);
bbb921da JM	353
bbb921da JM	354	random_add_randomness(&fi, sizeof(fi));
b5b969e9 JM	355	}
	356
	357
f8b1f695 JM	358	static void hostapd_mgmt_tx_cb(struct hostapd_data hapd, const u8 buf,
f8b1f695 JM	359	size_t len, u16 stype, int ok)
b5b969e9	360	{
4b9841d3 JM	361	struct ieee80211_hdr *hdr;
	362	hdr = (struct ieee80211_hdr *) buf;
	363	hapd = get_hapd_bssid(hapd->iface, get_hdr_bssid(hdr, len));
	364	if (hapd == NULL \|\| hapd == HAPD_BROADCAST)
	365	return;
b5b969e9 JM	366	ieee802_11_mgmt_cb(hapd, buf, len, stype, ok);
b5b969e9 JM	367	}
f82ef4d8	368
f8b1f695	369	#endif /* NEED_AP_MLME */
ad1e68e6 JM	370
ad1e68e6 JM	371
a0e0d3bb JM	372	static int hostapd_probe_req_rx(struct hostapd_data hapd, const u8 sa,
	373	const u8 *ie, size_t ie_len)
	374	{
	375	size_t i;
	376	int ret = 0;
	377
bbb921da JM	378	if (sa)
bbb921da JM	379	random_add_randomness(sa, ETH_ALEN);
a0e0d3bb JM	380	for (i = 0; hapd->probereq_cb && i < hapd->num_probereq_cb; i++) {
	381	if (hapd->probereq_cb[i].cb(hapd->probereq_cb[i].ctx,
	382	sa, ie, ie_len) > 0) {
	383	ret = 1;
	384	break;
	385	}
	386	}
	387	return ret;
	388	}
	389
	390
a8e0505b JM	391	static int hostapd_event_new_sta(struct hostapd_data hapd, const u8 addr)
	392	{
	393	struct sta_info *sta = ap_get_sta(hapd, addr);
	394	if (sta)
	395	return 0;
	396
	397	wpa_printf(MSG_DEBUG, "Data frame from unknown STA " MACSTR
	398	" - adding a new STA", MAC2STR(addr));
	399	sta = ap_sta_add(hapd, addr);
	400	if (sta) {
	401	hostapd_new_assoc_sta(hapd, sta, 0);
	402	} else {
	403	wpa_printf(MSG_DEBUG, "Failed to add STA entry for " MACSTR,
	404	MAC2STR(addr));
	405	return -1;
	406	}
	407
	408	return 0;
	409	}
	410
	411
	412	static void hostapd_event_eapol_rx(struct hostapd_data hapd, const u8 src,
	413	const u8 *data, size_t data_len)
	414	{
	415	struct hostapd_iface *iface = hapd->iface;
	416	size_t j;
	417
	418	for (j = 0; j < iface->num_bss; j++) {
	419	if (ap_get_sta(iface->bss[j], src)) {
	420	hapd = iface->bss[j];
	421	break;
	422	}
	423	}
	424
	425	ieee802_1x_receive(hapd, src, data, data_len);
	426	}
	427
	428
9646a8ab	429	void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
ad1e68e6 JM	430	union wpa_event_data *data)
	431	{
	432	struct hostapd_data *hapd = ctx;
	433
	434	switch (event) {
	435	case EVENT_MICHAEL_MIC_FAILURE:
	436	michael_mic_failure(hapd, data->michael_mic_failure.src, 1);
	437	break;
	438	case EVENT_SCAN_RESULTS:
	439	if (hapd->iface->scan_cb)
	440	hapd->iface->scan_cb(hapd->iface);
	441	break;
08fd8c15	442	#ifdef CONFIG_IEEE80211R
f2dab64e	443	case EVENT_FT_RRB_RX:
08fd8c15 JM	444	wpa_ft_rrb_rx(hapd->wpa_auth, data->ft_rrb_rx.src,
	445	data->ft_rrb_rx.data, data->ft_rrb_rx.data_len);
	446	break;
	447	#endif /* CONFIG_IEEE80211R */
fcf0f87d JM	448	case EVENT_WPS_BUTTON_PUSHED:
	449	hostapd_wps_button_pushed(hapd);
	450	break;
f8b1f695 JM	451	#ifdef NEED_AP_MLME
	452	case EVENT_TX_STATUS:
	453	switch (data->tx_status.type) {
	454	case WLAN_FC_TYPE_MGMT:
	455	hostapd_mgmt_tx_cb(hapd, data->tx_status.data,
	456	data->tx_status.data_len,
	457	data->tx_status.stype,
	458	data->tx_status.ack);
	459	break;
	460	case WLAN_FC_TYPE_DATA:
	461	hostapd_tx_status(hapd, data->tx_status.dst,
	462	data->tx_status.data,
	463	data->tx_status.data_len,
	464	data->tx_status.ack);
	465	break;
	466	}
	467	break;
	468	case EVENT_RX_FROM_UNKNOWN:
0d9fc3d8	469	hostapd_rx_from_unknown_sta(hapd, data->rx_from_unknown.frame,
f8b1f695 JM	470	data->rx_from_unknown.len);
	471	break;
	472	case EVENT_RX_MGMT:
2a8b7416	473	hostapd_mgmt_rx(hapd, &data->rx_mgmt);
f8b1f695 JM	474	break;
f8b1f695 JM	475	#endif /* NEED_AP_MLME */
a0e0d3bb JM	476	case EVENT_RX_PROBE_REQ:
	477	hostapd_probe_req_rx(hapd, data->rx_probe_req.sa,
	478	data->rx_probe_req.ie,
	479	data->rx_probe_req.ie_len);
	480	break;
a70a5d6d	481	case EVENT_NEW_STA:
a8e0505b JM	482	hostapd_event_new_sta(hapd, data->new_sta.addr);
	483	break;
	484	case EVENT_EAPOL_RX:
	485	hostapd_event_eapol_rx(hapd, data->eapol_rx.src,
	486	data->eapol_rx.data,
	487	data->eapol_rx.data_len);
	488	break;
1d041bec JM	489	case EVENT_ASSOC:
	490	hostapd_notif_assoc(hapd, data->assoc_info.addr,
	491	data->assoc_info.req_ies,
	492	data->assoc_info.req_ies_len);
	493	break;
	494	case EVENT_DISASSOC:
	495	if (data)
	496	hostapd_notif_disassoc(hapd, data->disassoc_info.addr);
	497	break;
	498	case EVENT_DEAUTH:
	499	if (data)
	500	hostapd_notif_disassoc(hapd, data->deauth_info.addr);
	501	break;
ad1e68e6 JM	502	default:
	503	wpa_printf(MSG_DEBUG, "Unknown event %d", event);
	504	break;
	505	}
	506	}
f8b1f695 JM	507
f8b1f695 JM	508	#endif /* HOSTAPD */