Ejemplo n.º 1
0
int hostapd_ctrl_iface_disassociate(struct hostapd_data *hapd,
                                    const char *txtaddr)
{
    u8 addr[ETH_ALEN];
    struct sta_info *sta;
    const char *pos;
    u16 reason = WLAN_REASON_PREV_AUTH_NOT_VALID;

    wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "CTRL_IFACE DISASSOCIATE %s",
            txtaddr);

    if (hwaddr_aton(txtaddr, addr))
        return -1;

    pos = os_strstr(txtaddr, " test=");
    if (pos) {
        struct ieee80211_mgmt mgmt;
        int encrypt;
        if (hapd->driver->send_frame == NULL)
            return -1;
        pos += 6;
        encrypt = atoi(pos);
        os_memset(&mgmt, 0, sizeof(mgmt));
        mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
                                          WLAN_FC_STYPE_DISASSOC);
        os_memcpy(mgmt.da, addr, ETH_ALEN);
        os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
        os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN);
        mgmt.u.disassoc.reason_code =
            host_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID);
        if (hapd->driver->send_frame(hapd->drv_priv, (u8 *) &mgmt,
                                     IEEE80211_HDRLEN +
                                     sizeof(mgmt.u.deauth),
                                     encrypt) < 0)
            return -1;
        return 0;
    }

#ifdef CONFIG_P2P_MANAGER
    pos = os_strstr(txtaddr, " p2p=");
    if (pos) {
        return p2p_manager_disconnect(hapd, WLAN_FC_STYPE_DISASSOC,
                                      atoi(pos + 5), addr);
    }
#endif /* CONFIG_P2P_MANAGER */

    pos = os_strstr(txtaddr, " reason=");
    if (pos)
        reason = atoi(pos + 8);

    hostapd_drv_sta_disassoc(hapd, addr, reason);
    sta = ap_get_sta(hapd, addr);
    if (sta)
        ap_sta_disassociate(hapd, sta, reason);
    else if (addr[0] == 0xff)
        hostapd_free_stas(hapd);

    return 0;
}
Ejemplo n.º 2
0
void hostapd_event_sta_low_ack(struct hostapd_data *hapd, const u8 *addr)
{
	struct sta_info *sta = ap_get_sta(hapd, addr);

	if (!sta || !hapd->conf->disassoc_low_ack || sta->agreed_to_steer)
		return;

	hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
		       HOSTAPD_LEVEL_INFO,
		       "disconnected due to excessive missing ACKs");
	hostapd_drv_sta_disassoc(hapd, addr, WLAN_REASON_DISASSOC_LOW_ACK);
	ap_sta_disassociate(hapd, sta, WLAN_REASON_DISASSOC_LOW_ACK);
}
Ejemplo n.º 3
0
Archivo: ap.c Proyecto: pocketbook/801
int ap_ctrl_iface_disassociate(struct wpa_supplicant *wpa_s,
                                             const char *txtaddr)
{
        u8 addr[ETH_ALEN];
        struct sta_info *sta;
        if (wpa_s->ap_iface == NULL)
		return -1;
        wpa_printf(MSG_DEBUG, "CTRL_IFACE DISASSOCIATE %s", txtaddr);
        if (hwaddr_aton(txtaddr, addr))
                return -1;
	hostapd_drv_sta_disassoc(wpa_s->ap_iface->bss[0], addr, WLAN_REASON_PREV_AUTH_NOT_VALID);
	sta = ap_get_sta(wpa_s->ap_iface->bss[0], addr);
	if (sta)
		ap_sta_disassociate(wpa_s->ap_iface->bss[0], sta,
				      WLAN_REASON_PREV_AUTH_NOT_VALID);
        return 0;
}
int hostapd_notif_assoc(struct hostapd_data *hapd, const u8 *addr,
			const u8 *req_ies, size_t req_ies_len, int reassoc)
{
	struct sta_info *sta;
	int new_assoc, res;
	struct ieee802_11_elems elems;
	const u8 *ie;
	size_t ielen;
#ifdef CONFIG_IEEE80211R
	u8 buf[sizeof(struct ieee80211_mgmt) + 1024];
	u8 *p = buf;
#endif /* CONFIG_IEEE80211R */
	u16 reason = WLAN_REASON_UNSPECIFIED;
	u16 status = WLAN_STATUS_SUCCESS;
	const u8 *p2p_dev_addr = NULL;

	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(req_ies, req_ies_len, &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");
#ifdef CONFIG_HS20
	} else if (elems.osen) {
		ie = elems.osen - 2;
		ielen = elems.osen_len + 2;
		wpa_printf(MSG_DEBUG, "STA included OSEN IE in (Re)AssocReq");
#endif /* CONFIG_HS20 */
	} 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) {
		ap_sta_no_session_timeout(hapd, sta);
		accounting_sta_stop(hapd, sta);

		/*
		 * Make sure that the previously registered inactivity timer
		 * will not remove the STA immediately.
		 */
		sta->timeout_next = STA_NULLFUNC;
	} else {
		sta = ap_sta_add(hapd, addr);
		if (sta == NULL) {
			hostapd_drv_sta_disassoc(hapd, addr,
						 WLAN_REASON_DISASSOC_AP_BUSY);
			return -1;
		}
	}
	sta->flags &= ~(WLAN_STA_WPS | WLAN_STA_MAYBE_WPS | WLAN_STA_WPS2);

#ifdef CONFIG_P2P
	if (elems.p2p) {
		wpabuf_free(sta->p2p_ie);
		sta->p2p_ie = ieee802_11_vendor_ie_concat(req_ies, req_ies_len,
							  P2P_IE_VENDOR_TYPE);
		if (sta->p2p_ie)
			p2p_dev_addr = p2p_get_go_dev_addr(sta->p2p_ie);
	}
#endif /* CONFIG_P2P */

#ifdef CONFIG_IEEE80211N
#ifdef NEED_AP_MLME
	if (elems.ht_capabilities &&
	    elems.ht_capabilities_len >=
	    sizeof(struct ieee80211_ht_capabilities) &&
	    (hapd->iface->conf->ht_capab &
	     HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) {
		struct ieee80211_ht_capabilities *ht_cap =
			(struct ieee80211_ht_capabilities *)
			elems.ht_capabilities;

		if (le_to_host16(ht_cap->ht_capabilities_info) &
		    HT_CAP_INFO_40MHZ_INTOLERANT)
			ht40_intolerant_add(hapd->iface, sta);
	}
#endif /* NEED_AP_MLME */
#endif /* CONFIG_IEEE80211N */

#ifdef CONFIG_INTERWORKING
	if (elems.ext_capab && elems.ext_capab_len > 4) {
		if (elems.ext_capab[4] & 0x01)
			sta->qos_map_enabled = 1;
	}
#endif /* CONFIG_INTERWORKING */

#ifdef CONFIG_HS20
	wpabuf_free(sta->hs20_ie);
	if (elems.hs20 && elems.hs20_len > 4) {
		sta->hs20_ie = wpabuf_alloc_copy(elems.hs20 + 4,
						 elems.hs20_len - 4);
	} else
		sta->hs20_ie = NULL;
#endif /* CONFIG_HS20 */
#ifdef CONFIG_MTK_P2P
		if (elems.wfd && (elems.wfd_len > 0)) {
			struct p2p_message msg;
			wpabuf_free(sta->wfd_ie);
			sta->wfd_ie = ieee802_11_vendor_ie_concat(req_ies, req_ies_len,
								  WFD_IE_VENDOR_TYPE);
			if(p2p_parse_wfd_ie(sta->wfd_ie,&msg)==0) {
				wpa_printf(MSG_DEBUG, "Change our WFD role and peer wfd_ie");
				if(hapd->p2p) {
					wpa_printf(MSG_DEBUG, "Change our WFD role and peer wfd_ie 2");
					wfd_process_request_and_switch_role(hapd->p2p, &msg, 0);
				}
			}
		}
#endif /* CONFIG_MTK_P2P */
	if (hapd->conf->wpa) {
		if (ie == NULL || ielen == 0) {
#ifdef CONFIG_WPS
			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;
			}
#endif /* CONFIG_WPS */

			wpa_printf(MSG_DEBUG, "No WPA/RSN IE from STA");
			return -1;
		}
#ifdef CONFIG_WPS
		if (hapd->conf->wps_state && ie[0] == 0xdd && ie[1] >= 4 &&
		    os_memcmp(ie + 2, "\x00\x50\xf2\x04", 4) == 0) {
			struct wpabuf *wps;
			sta->flags |= WLAN_STA_WPS;
			wps = ieee802_11_vendor_ie_concat(ie, ielen,
							  WPS_IE_VENDOR_TYPE);
			if (wps) {
				if (wps_is_20(wps)) {
					wpa_printf(MSG_DEBUG, "WPS: STA "
						   "supports WPS 2.0");
					sta->flags |= WLAN_STA_WPS2;
				}
				wpabuf_free(wps);
			}
			goto skip_wpa_check;
		}
#endif /* CONFIG_WPS */

		if (sta->wpa_sm == NULL)
			sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
							sta->addr,
							p2p_dev_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,
					  elems.mdie, elems.mdie_len);
		if (res != WPA_IE_OK) {
			wpa_printf(MSG_DEBUG, "WPA/RSN information element "
				   "rejected? (res %u)", res);
			wpa_hexdump(MSG_DEBUG, "IE", ie, ielen);
			if (res == WPA_INVALID_GROUP) {
				reason = WLAN_REASON_GROUP_CIPHER_NOT_VALID;
				status = WLAN_STATUS_GROUP_CIPHER_NOT_VALID;
			} else if (res == WPA_INVALID_PAIRWISE) {
				reason = WLAN_REASON_PAIRWISE_CIPHER_NOT_VALID;
				status = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID;
			} else if (res == WPA_INVALID_AKMP) {
				reason = WLAN_REASON_AKMP_NOT_VALID;
				status = WLAN_STATUS_AKMP_NOT_VALID;
			}
#ifdef CONFIG_IEEE80211W
			else if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION) {
				reason = WLAN_REASON_INVALID_IE;
				status = WLAN_STATUS_INVALID_IE;
			} else if (res == WPA_INVALID_MGMT_GROUP_CIPHER) {
				reason = WLAN_REASON_GROUP_CIPHER_NOT_VALID;
				status = WLAN_STATUS_GROUP_CIPHER_NOT_VALID;
			}
#endif /* CONFIG_IEEE80211W */
			else {
				reason = WLAN_REASON_INVALID_IE;
				status = WLAN_STATUS_INVALID_IE;
			}
			goto fail;
		}
#ifdef CONFIG_IEEE80211W
		if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
		    sta->sa_query_count > 0)
			ap_check_sa_query_timeout(hapd, sta);
		if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
		    (sta->auth_alg != WLAN_AUTH_FT)) {
			/*
			 * STA has already been associated with MFP and SA
			 * Query timeout has not been reached. Reject the
			 * association attempt temporarily and start SA Query,
			 * if one is not pending.
			 */

			if (sta->sa_query_count == 0)
				ap_sta_start_sa_query(hapd, sta);

#ifdef CONFIG_IEEE80211R
			status = WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY;

			p = hostapd_eid_assoc_comeback_time(hapd, sta, p);

			hostapd_sta_assoc(hapd, addr, reassoc, status, buf,
					  p - buf);
#endif /* CONFIG_IEEE80211R */
			return 0;
		}

		if (wpa_auth_uses_mfp(sta->wpa_sm))
			sta->flags |= WLAN_STA_MFP;
		else
			sta->flags &= ~WLAN_STA_MFP;
#endif /* CONFIG_IEEE80211W */

#ifdef CONFIG_IEEE80211R
		if (sta->auth_alg == WLAN_AUTH_FT) {
			status = wpa_ft_validate_reassoc(sta->wpa_sm, req_ies,
							 req_ies_len);
			if (status != WLAN_STATUS_SUCCESS) {
				if (status == WLAN_STATUS_INVALID_PMKID)
					reason = WLAN_REASON_INVALID_IE;
				if (status == WLAN_STATUS_INVALID_MDIE)
					reason = WLAN_REASON_INVALID_IE;
				if (status == WLAN_STATUS_INVALID_FTIE)
					reason = WLAN_REASON_INVALID_IE;
				goto fail;
			}
		}
#endif /* CONFIG_IEEE80211R */
	} else if (hapd->conf->wps_state) {
#ifdef CONFIG_WPS
		struct wpabuf *wps;
		if (req_ies)
			wps = ieee802_11_vendor_ie_concat(req_ies, req_ies_len,
							  WPS_IE_VENDOR_TYPE);
		else
			wps = NULL;
#ifdef CONFIG_WPS_STRICT
		if (wps && wps_validate_assoc_req(wps) < 0) {
			reason = WLAN_REASON_INVALID_IE;
			status = WLAN_STATUS_INVALID_IE;
			wpabuf_free(wps);
			goto fail;
		}
#endif /* CONFIG_WPS_STRICT */
		if (wps) {
			sta->flags |= WLAN_STA_WPS;
			if (wps_is_20(wps)) {
				wpa_printf(MSG_DEBUG, "WPS: STA supports "
					   "WPS 2.0");
				sta->flags |= WLAN_STA_WPS2;
			}
		} else
			sta->flags |= WLAN_STA_MAYBE_WPS;
		wpabuf_free(wps);
#endif /* CONFIG_WPS */
#ifdef CONFIG_HS20
	} else if (hapd->conf->osen) {
		if (elems.osen == NULL) {
			hostapd_logger(
				hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
				HOSTAPD_LEVEL_INFO,
				"No HS 2.0 OSEN element in association request");
			return WLAN_STATUS_INVALID_IE;
		}

		wpa_printf(MSG_DEBUG, "HS 2.0: OSEN association");
		if (sta->wpa_sm == NULL)
			sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
							sta->addr, NULL);
		if (sta->wpa_sm == NULL) {
			wpa_printf(MSG_WARNING, "Failed to initialize WPA "
				   "state machine");
			return WLAN_STATUS_UNSPECIFIED_FAILURE;
		}
		if (wpa_validate_osen(hapd->wpa_auth, sta->wpa_sm,
				      elems.osen - 2, elems.osen_len + 2) < 0)
			return WLAN_STATUS_INVALID_IE;
#endif /* CONFIG_HS20 */
	}
#ifdef CONFIG_WPS
skip_wpa_check:
#endif /* CONFIG_WPS */

#ifdef CONFIG_IEEE80211R
	p = wpa_sm_write_assoc_resp_ies(sta->wpa_sm, buf, sizeof(buf),
					sta->auth_alg, req_ies, req_ies_len);

	hostapd_sta_assoc(hapd, addr, reassoc, status, buf, p - buf);

	if (sta->auth_alg == WLAN_AUTH_FT)
		ap_sta_set_authorized(hapd, sta, 1);
#else /* CONFIG_IEEE80211R */
	/* Keep compiler silent about unused variables */
	if (status) {
	}
#endif /* CONFIG_IEEE80211R */

	new_assoc = (sta->flags & WLAN_STA_ASSOC) == 0;
	sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC;
	sta->flags &= ~WLAN_STA_WNM_SLEEP_MODE;

	hostapd_set_sta_flags(hapd, sta);

	if (reassoc && (sta->auth_alg == WLAN_AUTH_FT))
		wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC_FT);
	else
		wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC);

	hostapd_new_assoc_sta(hapd, sta, !new_assoc);
/*
[ALPS00326459][6575JB][BSP Package][6577JB][CTS Verifier 4.1_r2][MT6577_PHONE][changelist 996001]
GROUP JOIN 2 cases fail in Wi-Fi Direct Test
*/
#if defined(CONFIG_MTK_P2P) || defined(CONFIG_HOTSPOT_MGR_SUPPORT)
	if ((!hapd->conf->ieee802_1x && !hapd->conf->wpa) ||
		sta->auth_alg == WLAN_AUTH_FT) {
		/*
		 * Open, static WEP, or FT protocol; no separate authorization
		 * step.
		 */
		wpa_msg(hapd->msg_ctx, MSG_INFO,
		AP_STA_CONNECTED MACSTR, MAC2STR(sta->addr));
	}
#endif /* CONFIG_MTK_P2P || CONFIG_HOTSPOT_MGR_SUPPORT */

	ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);

#ifdef CONFIG_P2P
	if (req_ies) {
		p2p_group_notif_assoc(hapd->p2p_group, sta->addr,
				      req_ies, req_ies_len);
	}
#endif /* CONFIG_P2P */

	return 0;

fail:
#ifdef CONFIG_IEEE80211R
	hostapd_sta_assoc(hapd, addr, reassoc, status, buf, p - buf);
#endif /* CONFIG_IEEE80211R */
	hostapd_drv_sta_disassoc(hapd, sta->addr, reason);
	ap_free_sta(hapd, sta);
	return -1;
}
Ejemplo n.º 5
0
/**
 * ap_handle_timer - Per STA timer handler
 * @eloop_ctx: struct hostapd_data *
 * @timeout_ctx: struct sta_info *
 *
 * This function is called to check station activity and to remove inactive
 * stations.
 */
void ap_handle_timer(void *eloop_ctx, void *timeout_ctx)
{
	struct hostapd_data *hapd = eloop_ctx;
	struct sta_info *sta = timeout_ctx;
	unsigned long next_time = 0;

	wpa_printf(MSG_DEBUG, "%s: " MACSTR " flags=0x%x timeout_next=%d",
		   __func__, MAC2STR(sta->addr), sta->flags,
		   sta->timeout_next);
	if (sta->timeout_next == STA_REMOVE) {
		hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
			       HOSTAPD_LEVEL_INFO, "deauthenticated due to "
			       "local deauth request");
		ap_free_sta(hapd, sta);
		return;
	}

	if ((sta->flags & WLAN_STA_ASSOC) &&
	    (sta->timeout_next == STA_NULLFUNC ||
	     sta->timeout_next == STA_DISASSOC)) {
		int inactive_sec;
		/*
		 * Add random value to timeout so that we don't end up bouncing
		 * all stations at the same time if we have lots of associated
		 * stations that are idle (but keep re-associating).
		 */
		int fuzz = os_random() % 20;
		inactive_sec = hostapd_drv_get_inact_sec(hapd, sta->addr);
		if (inactive_sec == -1) {
			wpa_msg(hapd->msg_ctx, MSG_DEBUG,
				"Check inactivity: Could not "
				"get station info from kernel driver for "
				MACSTR, MAC2STR(sta->addr));
			/*
			 * The driver may not support this functionality.
			 * Anyway, try again after the next inactivity timeout,
			 * but do not disconnect the station now.
			 */
			next_time = hapd->conf->ap_max_inactivity + fuzz;
		} else if (inactive_sec < hapd->conf->ap_max_inactivity &&
			   sta->flags & WLAN_STA_ASSOC) {
			/* station activity detected; reset timeout state */
			wpa_msg(hapd->msg_ctx, MSG_DEBUG,
				"Station " MACSTR " has been active %is ago",
				MAC2STR(sta->addr), inactive_sec);
			sta->timeout_next = STA_NULLFUNC;
			next_time = hapd->conf->ap_max_inactivity + fuzz -
				inactive_sec;
		} else {
			wpa_msg(hapd->msg_ctx, MSG_DEBUG,
				"Station " MACSTR " has been "
				"inactive too long: %d sec, max allowed: %d",
				MAC2STR(sta->addr), inactive_sec,
				hapd->conf->ap_max_inactivity);

			if (hapd->conf->skip_inactivity_poll)
				sta->timeout_next = STA_DISASSOC;
		}
	}

	if ((sta->flags & WLAN_STA_ASSOC) &&
	    sta->timeout_next == STA_DISASSOC &&
	    !(sta->flags & WLAN_STA_PENDING_POLL) &&
	    !hapd->conf->skip_inactivity_poll) {
		wpa_msg(hapd->msg_ctx, MSG_DEBUG, "Station " MACSTR
			" has ACKed data poll", MAC2STR(sta->addr));
		/* data nullfunc frame poll did not produce TX errors; assume
		 * station ACKed it */
		sta->timeout_next = STA_NULLFUNC;
		next_time = hapd->conf->ap_max_inactivity;
	}

	if (next_time) {
		wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout "
			   "for " MACSTR " (%lu seconds)",
			   __func__, MAC2STR(sta->addr), next_time);
		eloop_register_timeout(next_time, 0, ap_handle_timer, hapd,
				       sta);
		return;
	}

	if (sta->timeout_next == STA_NULLFUNC &&
	    (sta->flags & WLAN_STA_ASSOC)) {
		wpa_printf(MSG_DEBUG, "  Polling STA");
		sta->flags |= WLAN_STA_PENDING_POLL;
		hostapd_drv_poll_client(hapd, hapd->own_addr, sta->addr,
					sta->flags & WLAN_STA_WMM);
	} else if (sta->timeout_next != STA_REMOVE) {
		int deauth = sta->timeout_next == STA_DEAUTH;

		wpa_dbg(hapd->msg_ctx, MSG_DEBUG,
			"Timeout, sending %s info to STA " MACSTR,
			deauth ? "deauthentication" : "disassociation",
			MAC2STR(sta->addr));

		if (deauth) {
			hostapd_drv_sta_deauth(
				hapd, sta->addr,
				WLAN_REASON_PREV_AUTH_NOT_VALID);
		} else {
			hostapd_drv_sta_disassoc(
				hapd, sta->addr,
				WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
		}
	}

	switch (sta->timeout_next) {
	case STA_NULLFUNC:
		sta->timeout_next = STA_DISASSOC;
		wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout "
			   "for " MACSTR " (%d seconds - AP_DISASSOC_DELAY)",
			   __func__, MAC2STR(sta->addr), AP_DISASSOC_DELAY);
		eloop_register_timeout(AP_DISASSOC_DELAY, 0, ap_handle_timer,
				       hapd, sta);
		break;
	case STA_DISASSOC:
		ap_sta_set_authorized(hapd, sta, 0);
		sta->flags &= ~WLAN_STA_ASSOC;
		ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
		if (!sta->acct_terminate_cause)
			sta->acct_terminate_cause =
				RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT;
		accounting_sta_stop(hapd, sta);
		ieee802_1x_free_station(sta);
		hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
			       HOSTAPD_LEVEL_INFO, "disassociated due to "
			       "inactivity");
		sta->timeout_next = STA_DEAUTH;
		wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout "
			   "for " MACSTR " (%d seconds - AP_DEAUTH_DELAY)",
			   __func__, MAC2STR(sta->addr), AP_DEAUTH_DELAY);
		eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
				       hapd, sta);
		mlme_disassociate_indication(
			hapd, sta, WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
		break;
	case STA_DEAUTH:
	case STA_REMOVE:
		hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
			       HOSTAPD_LEVEL_INFO, "deauthenticated due to "
			       "inactivity (timer DEAUTH/REMOVE)");
		if (!sta->acct_terminate_cause)
			sta->acct_terminate_cause =
				RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT;
		mlme_deauthenticate_indication(
			hapd, sta,
			WLAN_REASON_PREV_AUTH_NOT_VALID);
		ap_free_sta(hapd, sta);
		break;
	}
}
Ejemplo n.º 6
0
int hostapd_notif_assoc(struct hostapd_data *hapd, const u8 *addr,
			const u8 *req_ies, size_t req_ies_len, int reassoc)
{
	struct sta_info *sta;
	int new_assoc, res;
	struct ieee802_11_elems elems;
	const u8 *ie;
	size_t ielen;
#ifdef CONFIG_IEEE80211R
	u8 buf[sizeof(struct ieee80211_mgmt) + 1024];
	u8 *p = buf;
	size_t len = 0;
#endif /* CONFIG_IEEE80211R */
	int resp = WLAN_STATUS_SUCCESS;

	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(req_ies, req_ies_len, &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 | WLAN_STA_WPS2);

#ifdef CONFIG_P2P
	if (elems.p2p) {
		wpabuf_free(sta->p2p_ie);
		sta->p2p_ie = ieee802_11_vendor_ie_concat(req_ies, req_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) {
			struct wpabuf *wps;
			sta->flags |= WLAN_STA_WPS;
			wps = ieee802_11_vendor_ie_concat(ie, ielen,
                                                         WPS_IE_VENDOR_TYPE);
			if (wps) {
                        	if (wps_is_20(wps)) {
					wpa_printf(MSG_DEBUG, "WPS: STA "
                                                  "supports WPS 2.0");
					sta->flags |= WLAN_STA_WPS2;
				}
				wpabuf_free(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,
					  elems.mdie, elems.mdie_len);
		if (res != WPA_IE_OK) {
			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;
			goto fail;
		}
#ifdef CONFIG_IEEE80211R
		if (sta->auth_alg == WLAN_AUTH_FT) {
			resp = wpa_ft_validate_reassoc(sta->wpa_sm, req_ies,
						       req_ies_len);
			if (resp != WLAN_STATUS_SUCCESS)
				goto fail;
		}
#endif /* CONFIG_IEEE80211R */
	} else if (hapd->conf->wps_state) {
			struct wpabuf *wps;
			wps = ieee802_11_vendor_ie_concat(ie, ielen,
							  WPS_IE_VENDOR_TYPE);
#ifdef CONFIG_WPS_STRICT
		if (ie) {
			if (wps && wps_validate_assoc_req(wps) < 0) {
				resp = WLAN_REASON_INVALID_IE;
				wpabuf_free(wps);
				goto fail;
			}
		}
#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;
			if (wps && wps_is_20(wps)) {
				wpa_printf(MSG_DEBUG, "WPS: STA supports "
					    "WPS 2.0");
				sta->flags |= WLAN_STA_WPS2;
			}
		} else
			sta->flags |= WLAN_STA_MAYBE_WPS;
			wpabuf_free(wps);
	}
skip_wpa_check:

#ifdef CONFIG_IEEE80211R
	p = wpa_sm_write_assoc_resp_ies(sta->wpa_sm, buf, sizeof(buf),
					sta->auth_alg, req_ies, req_ies_len);
	len = p - buf;

	hostapd_sta_assoc(hapd, addr, reassoc, 0, buf, len);
#endif /* CONFIG_IEEE80211R */

	new_assoc = (sta->flags & WLAN_STA_ASSOC) == 0;
	sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC;

	if (reassoc && (sta->auth_alg == WLAN_AUTH_FT))
		wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC_FT);
	else
		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,
			      req_ies, req_ies_len);
#endif /* CONFIG_P2P */

	return 0;

fail:
#ifdef CONFIG_IEEE80211R
	hostapd_sta_assoc(hapd, addr, reassoc, resp, buf, len);
#endif /* CONFIG_IEEE80211R */
	hostapd_drv_sta_disassoc(hapd, sta->addr, resp);
	ap_free_sta(hapd, sta);
	return -1;
}
Ejemplo n.º 7
0
/**
 * ap_handle_timer - Per STA timer handler
 * @eloop_ctx: struct hostapd_data *
 * @timeout_ctx: struct sta_info *
 *
 * This function is called to check station activity and to remove inactive
 * stations.
 */
void ap_handle_timer(void *eloop_ctx, void *timeout_ctx)
{
	struct hostapd_data *hapd = eloop_ctx;
	struct sta_info *sta = timeout_ctx;
	unsigned long next_time = 0;

	if (sta->timeout_next == STA_REMOVE) {
		hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
			       HOSTAPD_LEVEL_INFO, "deauthenticated due to "
			       "local deauth request");
		ap_free_sta(hapd, sta);
		return;
	}

	if ((sta->flags & WLAN_STA_ASSOC) &&
	    (sta->timeout_next == STA_NULLFUNC ||
	     sta->timeout_next == STA_DISASSOC)) {
		int inactive_sec;
		inactive_sec = hostapd_drv_get_inact_sec(hapd, sta->addr);
		if (inactive_sec == -1) {
			wpa_msg(hapd, MSG_DEBUG, "Check inactivity: Could not "
				"get station info rom kernel driver for "
				MACSTR, MAC2STR(sta->addr));
		} else if (inactive_sec < hapd->conf->ap_max_inactivity &&
			   sta->flags & WLAN_STA_ASSOC) {
			/* station activity detected; reset timeout state */
			wpa_msg(hapd, MSG_DEBUG, "Station " MACSTR " has been "
				"active %is ago",
				MAC2STR(sta->addr), inactive_sec);
			sta->timeout_next = STA_NULLFUNC;
			next_time = hapd->conf->ap_max_inactivity -
				inactive_sec;
		} else {
			wpa_msg(hapd, MSG_DEBUG, "Station " MACSTR " has been "
				"inactive too long: %d sec, max allowed: %d",
				MAC2STR(sta->addr), inactive_sec,
				hapd->conf->ap_max_inactivity);
		}
	}

	if ((sta->flags & WLAN_STA_ASSOC) &&
	    sta->timeout_next == STA_DISASSOC &&
	    !(sta->flags & WLAN_STA_PENDING_POLL)) {
		wpa_msg(hapd, MSG_DEBUG, "Station " MACSTR " has ACKed data "
			"poll", MAC2STR(sta->addr));
		/* data nullfunc frame poll did not produce TX errors; assume
		 * station ACKed it */
		sta->timeout_next = STA_NULLFUNC;
		next_time = hapd->conf->ap_max_inactivity;
	}

	if (next_time) {
		eloop_register_timeout(next_time, 0, ap_handle_timer, hapd,
				       sta);
		return;
	}

	if (sta->timeout_next == STA_NULLFUNC &&
	    (sta->flags & WLAN_STA_ASSOC)) {
#ifndef CONFIG_NATIVE_WINDOWS
		/* send data frame to poll STA and check whether this frame
		 * is ACKed */
		struct {
			struct ieee80211_hdr hdr;
			u16 qos_ctl;
		} STRUCT_PACKED nulldata;
		int size = sizeof(struct ieee80211_hdr);

		wpa_printf(MSG_DEBUG, "  Polling STA with data frame");
		sta->flags |= WLAN_STA_PENDING_POLL;

		os_memset(&nulldata, 0, sizeof(nulldata));
		if (hapd->driver &&
		    os_strcmp(hapd->driver->name, "hostap") == 0) {
			/*
			 * WLAN_FC_STYPE_NULLFUNC would be more appropriate,
			 * but it is apparently not retried so TX Exc events
			 * are not received for it.
			 */
			nulldata.hdr.frame_control =
				IEEE80211_FC(WLAN_FC_TYPE_DATA,
					     WLAN_FC_STYPE_DATA);
		} else {
			if (sta->flags & WLAN_STA_WMM) {
				nulldata.hdr.frame_control =
					IEEE80211_FC(WLAN_FC_TYPE_DATA,
						     WLAN_FC_STYPE_QOS_NULL);
				size = sizeof(nulldata);
			} else
				nulldata.hdr.frame_control =
					IEEE80211_FC(WLAN_FC_TYPE_DATA,
						     WLAN_FC_STYPE_NULLFUNC);
		}

		nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
		os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, sta->addr,
			  ETH_ALEN);
		os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, hapd->own_addr,
			  ETH_ALEN);
		os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, hapd->own_addr,
			  ETH_ALEN);

		if (hostapd_drv_send_mlme(hapd, &nulldata, size) < 0)
			perror("ap_handle_timer: send");
#endif /* CONFIG_NATIVE_WINDOWS */
	} else if (sta->timeout_next != STA_REMOVE) {
		int deauth = sta->timeout_next == STA_DEAUTH;

		wpa_printf(MSG_DEBUG, "Sending %s info to STA " MACSTR,
			   deauth ? "deauthentication" : "disassociation",
			   MAC2STR(sta->addr));

		if (deauth) {
			hostapd_drv_sta_deauth(
				hapd, sta->addr,
				WLAN_REASON_PREV_AUTH_NOT_VALID);
		} else {
			hostapd_drv_sta_disassoc(
				hapd, sta->addr,
				WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
		}
	}

	switch (sta->timeout_next) {
	case STA_NULLFUNC:
		sta->timeout_next = STA_DISASSOC;
		eloop_register_timeout(AP_DISASSOC_DELAY, 0, ap_handle_timer,
				       hapd, sta);
		break;
	case STA_DISASSOC:
		sta->flags &= ~WLAN_STA_ASSOC;
		ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
		if (!sta->acct_terminate_cause)
			sta->acct_terminate_cause =
				RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT;
		accounting_sta_stop(hapd, sta);
		ieee802_1x_free_station(sta);
		hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
			       HOSTAPD_LEVEL_INFO, "disassociated due to "
			       "inactivity");
		sta->timeout_next = STA_DEAUTH;
		eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
				       hapd, sta);
		mlme_disassociate_indication(
			hapd, sta, WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
		break;
	case STA_DEAUTH:
	case STA_REMOVE:
		hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
			       HOSTAPD_LEVEL_INFO, "deauthenticated due to "
			       "inactivity");
		if (!sta->acct_terminate_cause)
			sta->acct_terminate_cause =
				RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT;
		mlme_deauthenticate_indication(
			hapd, sta,
			WLAN_REASON_PREV_AUTH_NOT_VALID);
		ap_free_sta(hapd, sta);
		break;
	}
}
int hostapd_notif_assoc(struct hostapd_data *hapd, const u8 *addr,
                        const u8 *req_ies, size_t req_ies_len, int reassoc)
{
    struct sta_info *sta;
    int new_assoc, res;
    struct ieee802_11_elems elems;
    const u8 *ie;
    size_t ielen;
#ifdef CONFIG_IEEE80211R
    u8 buf[sizeof(struct ieee80211_mgmt) + 1024];
    u8 *p = buf;
#endif /* CONFIG_IEEE80211R */
    u16 reason = WLAN_REASON_UNSPECIFIED;
    u16 status = WLAN_STATUS_SUCCESS;
    const u8 *p2p_dev_addr = NULL;

    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(req_ies, req_ies_len, &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) {
        ap_sta_no_session_timeout(hapd, sta);
        accounting_sta_stop(hapd, sta);

        /*
         * Make sure that the previously registered inactivity timer
         * will not remove the STA immediately.
         */
        sta->timeout_next = STA_NULLFUNC;
    } else {
        sta = ap_sta_add(hapd, addr);
        if (sta == NULL) {
            hostapd_drv_sta_disassoc(hapd, addr,
                                     WLAN_REASON_DISASSOC_AP_BUSY);
            return -1;
        }
    }
    sta->flags &= ~(WLAN_STA_WPS | WLAN_STA_MAYBE_WPS | WLAN_STA_WPS2);

#ifdef CONFIG_P2P
    if (elems.p2p) {
        wpabuf_free(sta->p2p_ie);
        sta->p2p_ie = ieee802_11_vendor_ie_concat(req_ies, req_ies_len,
                      P2P_IE_VENDOR_TYPE);
        if (sta->p2p_ie)
            p2p_dev_addr = p2p_get_go_dev_addr(sta->p2p_ie);
    }
#endif /* CONFIG_P2P */

#ifdef CONFIG_INTERWORKING
    if (elems.ext_capab && elems.ext_capab_len > 4) {
        if (elems.ext_capab[4] & 0x01)
            sta->qos_map_enabled = 1;
    }
#endif /* CONFIG_INTERWORKING */

#ifdef CONFIG_HS20
    wpabuf_free(sta->hs20_ie);
    if (elems.hs20 && elems.hs20_len > 4) {
        sta->hs20_ie = wpabuf_alloc_copy(elems.hs20 + 4,
                                         elems.hs20_len - 4);
    } else
        sta->hs20_ie = NULL;
#endif /* CONFIG_HS20 */

    if (hapd->conf->wpa) {
        if (ie == NULL || ielen == 0) {
#ifdef CONFIG_WPS
            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;
            }
#endif /* CONFIG_WPS */

            wpa_printf(MSG_DEBUG, "No WPA/RSN IE from STA");
            return -1;
        }
#ifdef CONFIG_WPS
        if (hapd->conf->wps_state && ie[0] == 0xdd && ie[1] >= 4 &&
                os_memcmp(ie + 2, "\x00\x50\xf2\x04", 4) == 0) {
            struct wpabuf *wps;
            sta->flags |= WLAN_STA_WPS;
            wps = ieee802_11_vendor_ie_concat(ie, ielen,
                                              WPS_IE_VENDOR_TYPE);
            if (wps) {
                if (wps_is_20(wps)) {
                    wpa_printf(MSG_DEBUG, "WPS: STA "
                               "supports WPS 2.0");
                    sta->flags |= WLAN_STA_WPS2;
                }
                wpabuf_free(wps);
            }
            goto skip_wpa_check;
        }
#endif /* CONFIG_WPS */

        if (sta->wpa_sm == NULL)
            sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
                                            sta->addr,
                                            p2p_dev_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,
                                  elems.mdie, elems.mdie_len);
        if (res != WPA_IE_OK) {
            wpa_printf(MSG_DEBUG, "WPA/RSN information element "
                       "rejected? (res %u)", res);
            wpa_hexdump(MSG_DEBUG, "IE", ie, ielen);
            if (res == WPA_INVALID_GROUP) {
                reason = WLAN_REASON_GROUP_CIPHER_NOT_VALID;
                status = WLAN_STATUS_GROUP_CIPHER_NOT_VALID;
            } else if (res == WPA_INVALID_PAIRWISE) {
                reason = WLAN_REASON_PAIRWISE_CIPHER_NOT_VALID;
                status = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID;
            } else if (res == WPA_INVALID_AKMP) {
                reason = WLAN_REASON_AKMP_NOT_VALID;
                status = WLAN_STATUS_AKMP_NOT_VALID;
            }
#ifdef CONFIG_IEEE80211W
            else if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION) {
                reason = WLAN_REASON_INVALID_IE;
                status = WLAN_STATUS_INVALID_IE;
            } else if (res == WPA_INVALID_MGMT_GROUP_CIPHER) {
                reason = WLAN_REASON_GROUP_CIPHER_NOT_VALID;
                status = WLAN_STATUS_GROUP_CIPHER_NOT_VALID;
            }
#endif /* CONFIG_IEEE80211W */
            else {
                reason = WLAN_REASON_INVALID_IE;
                status = WLAN_STATUS_INVALID_IE;
            }
            goto fail;
        }
#ifdef CONFIG_IEEE80211W
        if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
                sta->sa_query_count > 0)
            ap_check_sa_query_timeout(hapd, sta);
        if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
                (sta->auth_alg != WLAN_AUTH_FT)) {
            /*
             * STA has already been associated with MFP and SA
             * Query timeout has not been reached. Reject the
             * association attempt temporarily and start SA Query,
             * if one is not pending.
             */

            if (sta->sa_query_count == 0)
                ap_sta_start_sa_query(hapd, sta);

#ifdef CONFIG_IEEE80211R
            status = WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY;

            p = hostapd_eid_assoc_comeback_time(hapd, sta, p);

            hostapd_sta_assoc(hapd, addr, reassoc, status, buf,
                              p - buf);
#endif /* CONFIG_IEEE80211R */
            return 0;
        }

        if (wpa_auth_uses_mfp(sta->wpa_sm))
            sta->flags |= WLAN_STA_MFP;
        else
            sta->flags &= ~WLAN_STA_MFP;
#endif /* CONFIG_IEEE80211W */

#ifdef CONFIG_IEEE80211R
        if (sta->auth_alg == WLAN_AUTH_FT) {
            status = wpa_ft_validate_reassoc(sta->wpa_sm, req_ies,
                                             req_ies_len);
            if (status != WLAN_STATUS_SUCCESS) {
                if (status == WLAN_STATUS_INVALID_PMKID)
                    reason = WLAN_REASON_INVALID_IE;
                if (status == WLAN_STATUS_INVALID_MDIE)
                    reason = WLAN_REASON_INVALID_IE;
                if (status == WLAN_STATUS_INVALID_FTIE)
                    reason = WLAN_REASON_INVALID_IE;
                goto fail;
            }
        }
#endif /* CONFIG_IEEE80211R */
    } else if (hapd->conf->wps_state) {
#ifdef CONFIG_WPS
        struct wpabuf *wps;
        if (req_ies)
            wps = ieee802_11_vendor_ie_concat(req_ies, req_ies_len,
                                              WPS_IE_VENDOR_TYPE);
        else
            wps = NULL;
#ifdef CONFIG_WPS_STRICT
        if (wps && wps_validate_assoc_req(wps) < 0) {
            reason = WLAN_REASON_INVALID_IE;
            status = WLAN_STATUS_INVALID_IE;
            wpabuf_free(wps);
            goto fail;
        }
#endif /* CONFIG_WPS_STRICT */
        if (wps) {
            sta->flags |= WLAN_STA_WPS;
            if (wps_is_20(wps)) {
                wpa_printf(MSG_DEBUG, "WPS: STA supports "
                           "WPS 2.0");
                sta->flags |= WLAN_STA_WPS2;
            }
        } else
            sta->flags |= WLAN_STA_MAYBE_WPS;
        wpabuf_free(wps);
#endif /* CONFIG_WPS */
    }
#ifdef CONFIG_WPS
skip_wpa_check:
#endif /* CONFIG_WPS */

#ifdef CONFIG_IEEE80211R
    p = wpa_sm_write_assoc_resp_ies(sta->wpa_sm, buf, sizeof(buf),
                                    sta->auth_alg, req_ies, req_ies_len);

    hostapd_sta_assoc(hapd, addr, reassoc, status, buf, p - buf);
#else /* CONFIG_IEEE80211R */
    /* Keep compiler silent about unused variables */
    if (status) {
    }
#endif /* CONFIG_IEEE80211R */

    new_assoc = (sta->flags & WLAN_STA_ASSOC) == 0;
    sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC;

    if (reassoc && (sta->auth_alg == WLAN_AUTH_FT))
        wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC_FT);
    else
        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
    if (req_ies) {
        p2p_group_notif_assoc(hapd->p2p_group, sta->addr,
                              req_ies, req_ies_len);
    }
#endif /* CONFIG_P2P */

    return 0;

fail:
#ifdef CONFIG_IEEE80211R
    hostapd_sta_assoc(hapd, addr, reassoc, status, buf, p - buf);
#endif /* CONFIG_IEEE80211R */
    hostapd_drv_sta_disassoc(hapd, sta->addr, reason);
    ap_free_sta(hapd, sta);
    return -1;
}
Ejemplo n.º 9
0
int hostapd_notif_assoc(struct hostapd_data *hapd, const u8 *addr,
			const u8 *req_ies, size_t req_ies_len, int reassoc)
{
	struct sta_info *sta;
	int new_assoc, res;
	struct ieee802_11_elems elems;
	const u8 *ie;
	size_t ielen;
#if defined(CONFIG_IEEE80211R) || defined(CONFIG_IEEE80211W)
	u8 buf[sizeof(struct ieee80211_mgmt) + 1024];
	u8 *p = buf;
#endif /* CONFIG_IEEE80211R || CONFIG_IEEE80211W */
	u16 reason = WLAN_REASON_UNSPECIFIED;
	u16 status = WLAN_STATUS_SUCCESS;
	const u8 *p2p_dev_addr = NULL;

	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(req_ies, req_ies_len, &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");
#ifdef CONFIG_HS20
	} else if (elems.osen) {
		ie = elems.osen - 2;
		ielen = elems.osen_len + 2;
		wpa_printf(MSG_DEBUG, "STA included OSEN IE in (Re)AssocReq");
#endif /* CONFIG_HS20 */
	} 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) {
		ap_sta_no_session_timeout(hapd, sta);
		accounting_sta_stop(hapd, sta);

		/*
		 * Make sure that the previously registered inactivity timer
		 * will not remove the STA immediately.
		 */
		sta->timeout_next = STA_NULLFUNC;
	} else {
		sta = ap_sta_add(hapd, addr);
		if (sta == NULL) {
			hostapd_drv_sta_disassoc(hapd, addr,
						 WLAN_REASON_DISASSOC_AP_BUSY);
			return -1;
		}
	}
	sta->flags &= ~(WLAN_STA_WPS | WLAN_STA_MAYBE_WPS | WLAN_STA_WPS2);

	/*
	 * ACL configurations to the drivers (implementing AP SME and ACL
	 * offload) without hostapd's knowledge, can result in a disconnection
	 * though the driver accepts the connection. Skip the hostapd check for
	 * ACL if the driver supports ACL offload to avoid potentially
	 * conflicting ACL rules.
	 */
	if (hapd->iface->drv_max_acl_mac_addrs == 0 &&
	    hostapd_check_acl(hapd, addr, NULL) != HOSTAPD_ACL_ACCEPT) {
		wpa_printf(MSG_INFO, "STA " MACSTR " not allowed to connect",
			   MAC2STR(addr));
		reason = WLAN_REASON_UNSPECIFIED;
		goto fail;
	}

#ifdef CONFIG_P2P
	if (elems.p2p) {
		wpabuf_free(sta->p2p_ie);
		sta->p2p_ie = ieee802_11_vendor_ie_concat(req_ies, req_ies_len,
							  P2P_IE_VENDOR_TYPE);
		if (sta->p2p_ie)
			p2p_dev_addr = p2p_get_go_dev_addr(sta->p2p_ie);
	}
#endif /* CONFIG_P2P */

#ifdef CONFIG_IEEE80211N
#ifdef NEED_AP_MLME
	if (elems.ht_capabilities &&
	    (hapd->iface->conf->ht_capab &
	     HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) {
		struct ieee80211_ht_capabilities *ht_cap =
			(struct ieee80211_ht_capabilities *)
			elems.ht_capabilities;

		if (le_to_host16(ht_cap->ht_capabilities_info) &
		    HT_CAP_INFO_40MHZ_INTOLERANT)
			ht40_intolerant_add(hapd->iface, sta);
	}
#endif /* NEED_AP_MLME */
#endif /* CONFIG_IEEE80211N */

#ifdef CONFIG_INTERWORKING
	if (elems.ext_capab && elems.ext_capab_len > 4) {
		if (elems.ext_capab[4] & 0x01)
			sta->qos_map_enabled = 1;
	}
#endif /* CONFIG_INTERWORKING */

#ifdef CONFIG_HS20
	wpabuf_free(sta->hs20_ie);
	if (elems.hs20 && elems.hs20_len > 4) {
		sta->hs20_ie = wpabuf_alloc_copy(elems.hs20 + 4,
						 elems.hs20_len - 4);
	} else
		sta->hs20_ie = NULL;
#endif /* CONFIG_HS20 */

#ifdef CONFIG_FST
	wpabuf_free(sta->mb_ies);
	if (hapd->iface->fst)
		sta->mb_ies = mb_ies_by_info(&elems.mb_ies);
	else
		sta->mb_ies = NULL;
#endif /* CONFIG_FST */

	mbo_ap_check_sta_assoc(hapd, sta, &elems);

	ap_copy_sta_supp_op_classes(sta, elems.supp_op_classes,
				    elems.supp_op_classes_len);

	if (hapd->conf->wpa) {
		if (ie == NULL || ielen == 0) {
#ifdef CONFIG_WPS
			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;
			}
#endif /* CONFIG_WPS */

			wpa_printf(MSG_DEBUG, "No WPA/RSN IE from STA");
			return -1;
		}
#ifdef CONFIG_WPS
		if (hapd->conf->wps_state && ie[0] == 0xdd && ie[1] >= 4 &&
		    os_memcmp(ie + 2, "\x00\x50\xf2\x04", 4) == 0) {
			struct wpabuf *wps;

			sta->flags |= WLAN_STA_WPS;
			wps = ieee802_11_vendor_ie_concat(ie, ielen,
							  WPS_IE_VENDOR_TYPE);
			if (wps) {
				if (wps_is_20(wps)) {
					wpa_printf(MSG_DEBUG,
						   "WPS: STA supports WPS 2.0");
					sta->flags |= WLAN_STA_WPS2;
				}
				wpabuf_free(wps);
			}
			goto skip_wpa_check;
		}
#endif /* CONFIG_WPS */

		if (sta->wpa_sm == NULL)
			sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
							sta->addr,
							p2p_dev_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,
					  elems.mdie, elems.mdie_len);
		if (res != WPA_IE_OK) {
			wpa_printf(MSG_DEBUG,
				   "WPA/RSN information element rejected? (res %u)",
				   res);
			wpa_hexdump(MSG_DEBUG, "IE", ie, ielen);
			if (res == WPA_INVALID_GROUP) {
				reason = WLAN_REASON_GROUP_CIPHER_NOT_VALID;
				status = WLAN_STATUS_GROUP_CIPHER_NOT_VALID;
			} else if (res == WPA_INVALID_PAIRWISE) {
				reason = WLAN_REASON_PAIRWISE_CIPHER_NOT_VALID;
				status = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID;
			} else if (res == WPA_INVALID_AKMP) {
				reason = WLAN_REASON_AKMP_NOT_VALID;
				status = WLAN_STATUS_AKMP_NOT_VALID;
			}
#ifdef CONFIG_IEEE80211W
			else if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION) {
				reason = WLAN_REASON_INVALID_IE;
				status = WLAN_STATUS_INVALID_IE;
			} else if (res == WPA_INVALID_MGMT_GROUP_CIPHER) {
				reason = WLAN_REASON_GROUP_CIPHER_NOT_VALID;
				status = WLAN_STATUS_GROUP_CIPHER_NOT_VALID;
			}
#endif /* CONFIG_IEEE80211W */
			else {
				reason = WLAN_REASON_INVALID_IE;
				status = WLAN_STATUS_INVALID_IE;
			}
			goto fail;
		}
#ifdef CONFIG_IEEE80211W
		if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
		    sta->sa_query_count > 0)
			ap_check_sa_query_timeout(hapd, sta);
		if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
		    (sta->auth_alg != WLAN_AUTH_FT)) {
			/*
			 * STA has already been associated with MFP and SA
			 * Query timeout has not been reached. Reject the
			 * association attempt temporarily and start SA Query,
			 * if one is not pending.
			 */

			if (sta->sa_query_count == 0)
				ap_sta_start_sa_query(hapd, sta);

			status = WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY;

			p = hostapd_eid_assoc_comeback_time(hapd, sta, p);

			hostapd_sta_assoc(hapd, addr, reassoc, status, buf,
					  p - buf);
			return 0;
		}

		if (wpa_auth_uses_mfp(sta->wpa_sm))
			sta->flags |= WLAN_STA_MFP;
		else
			sta->flags &= ~WLAN_STA_MFP;
#endif /* CONFIG_IEEE80211W */

#ifdef CONFIG_IEEE80211R
		if (sta->auth_alg == WLAN_AUTH_FT) {
			status = wpa_ft_validate_reassoc(sta->wpa_sm, req_ies,
							 req_ies_len);
			if (status != WLAN_STATUS_SUCCESS) {
				if (status == WLAN_STATUS_INVALID_PMKID)
					reason = WLAN_REASON_INVALID_IE;
				if (status == WLAN_STATUS_INVALID_MDIE)
					reason = WLAN_REASON_INVALID_IE;
				if (status == WLAN_STATUS_INVALID_FTIE)
					reason = WLAN_REASON_INVALID_IE;
				goto fail;
			}
		}
#endif /* CONFIG_IEEE80211R */
	} else if (hapd->conf->wps_state) {
#ifdef CONFIG_WPS
		struct wpabuf *wps;

		if (req_ies)
			wps = ieee802_11_vendor_ie_concat(req_ies, req_ies_len,
							  WPS_IE_VENDOR_TYPE);
		else
			wps = NULL;
#ifdef CONFIG_WPS_STRICT
		if (wps && wps_validate_assoc_req(wps) < 0) {
			reason = WLAN_REASON_INVALID_IE;
			status = WLAN_STATUS_INVALID_IE;
			wpabuf_free(wps);
			goto fail;
		}
#endif /* CONFIG_WPS_STRICT */
		if (wps) {
			sta->flags |= WLAN_STA_WPS;
			if (wps_is_20(wps)) {
				wpa_printf(MSG_DEBUG,
					   "WPS: STA supports WPS 2.0");
				sta->flags |= WLAN_STA_WPS2;
			}
		} else
			sta->flags |= WLAN_STA_MAYBE_WPS;
		wpabuf_free(wps);
#endif /* CONFIG_WPS */
#ifdef CONFIG_HS20
	} else if (hapd->conf->osen) {
		if (elems.osen == NULL) {
			hostapd_logger(
				hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
				HOSTAPD_LEVEL_INFO,
				"No HS 2.0 OSEN element in association request");
			return WLAN_STATUS_INVALID_IE;
		}

		wpa_printf(MSG_DEBUG, "HS 2.0: OSEN association");
		if (sta->wpa_sm == NULL)
			sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
							sta->addr, NULL);
		if (sta->wpa_sm == NULL) {
			wpa_printf(MSG_WARNING,
				   "Failed to initialize WPA state machine");
			return WLAN_STATUS_UNSPECIFIED_FAILURE;
		}
		if (wpa_validate_osen(hapd->wpa_auth, sta->wpa_sm,
				      elems.osen - 2, elems.osen_len + 2) < 0)
			return WLAN_STATUS_INVALID_IE;
#endif /* CONFIG_HS20 */
	}

#ifdef CONFIG_MBO
	if (hapd->conf->mbo_enabled && (hapd->conf->wpa & 2) &&
	    elems.mbo && sta->cell_capa && !(sta->flags & WLAN_STA_MFP) &&
	    hapd->conf->ieee80211w != NO_MGMT_FRAME_PROTECTION) {
		wpa_printf(MSG_INFO,
			   "MBO: Reject WPA2 association without PMF");
		return WLAN_STATUS_UNSPECIFIED_FAILURE;
	}
#endif /* CONFIG_MBO */

#ifdef CONFIG_WPS
skip_wpa_check:
#endif /* CONFIG_WPS */

#ifdef CONFIG_IEEE80211R
	p = wpa_sm_write_assoc_resp_ies(sta->wpa_sm, buf, sizeof(buf),
					sta->auth_alg, req_ies, req_ies_len);

	hostapd_sta_assoc(hapd, addr, reassoc, status, buf, p - buf);

	if (sta->auth_alg == WLAN_AUTH_FT)
		ap_sta_set_authorized(hapd, sta, 1);
#else /* CONFIG_IEEE80211R */
	/* Keep compiler silent about unused variables */
	if (status) {
	}
#endif /* CONFIG_IEEE80211R */

	new_assoc = (sta->flags & WLAN_STA_ASSOC) == 0;
	sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC;
	sta->flags &= ~WLAN_STA_WNM_SLEEP_MODE;

	hostapd_set_sta_flags(hapd, sta);

	if (reassoc && (sta->auth_alg == WLAN_AUTH_FT))
		wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC_FT);
	else
		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
	if (req_ies) {
		p2p_group_notif_assoc(hapd->p2p_group, sta->addr,
				      req_ies, req_ies_len);
	}
#endif /* CONFIG_P2P */

	return 0;

fail:
#ifdef CONFIG_IEEE80211R
	hostapd_sta_assoc(hapd, addr, reassoc, status, buf, p - buf);
#endif /* CONFIG_IEEE80211R */
	hostapd_drv_sta_disassoc(hapd, sta->addr, reason);
	ap_free_sta(hapd, sta);
	return -1;
}