[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 "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;
	}

	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;

	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);
}


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;

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