Exemple #1
0
void ap_free_sta(hostapd *hapd, struct sta_info *sta)
{
    accounting_sta_stop(hapd, sta);
    if (!(sta->flags & WLAN_STA_PREAUTH))
        hostapd_sta_remove(hapd, sta->addr);

    ap_sta_hash_del(hapd, sta);
    ap_sta_list_del(hapd, sta);

    if (sta->aid > 0)
        hapd->sta_aid[sta->aid - 1] = NULL;

    hapd->num_sta--;
    eloop_cancel_timeout(ap_handle_timer, hapd, sta);

    ieee802_1x_free_station(sta);
    wpa_free_station(sta);
    radius_client_flush_auth(hapd->radius, sta->addr);

    if (sta->last_assoc_req)
        free(sta->last_assoc_req);

    free(sta->challenge);
    free(sta->wpa_ie);

    free(sta);
}
static void ieee80211_tkip_countermeasures_start(struct hostapd_data *hapd)
{
	struct sta_info *sta;

	hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
		       HOSTAPD_LEVEL_INFO, "TKIP countermeasures initiated");

	if (hapd->wpa_auth)
		hapd->wpa_auth->dot11RSNATKIPCounterMeasuresInvoked++;
	hapd->tkip_countermeasures = 1;
	/* The following line of code is redundant, it will cause 
     * driver crash */ 
    /*hostapd_set_countermeasures(hapd, 1); */
	wpa_gtk_rekey(hapd);
	eloop_cancel_timeout(ieee80211_tkip_countermeasures_stop, hapd, NULL);
	eloop_register_timeout(60, 0, ieee80211_tkip_countermeasures_stop,
			       hapd, NULL);
	for (sta = hapd->sta_list; sta != NULL; sta = sta->next) {
		hostapd_sta_deauth(hapd, sta->addr,
				   WLAN_REASON_MICHAEL_MIC_FAILURE);
		sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC |
				WLAN_STA_AUTHORIZED);
		hostapd_sta_remove(hapd, sta->addr);
	}
}
Exemple #3
0
void ap_free_sta(struct hostapd_data *hapd, struct sta_info *sta)
{
	int set_beacon = 0;

	accounting_sta_stop(hapd, sta);

	if (!ap_sta_in_other_bss(hapd, sta, WLAN_STA_ASSOC) &&
	    !(sta->flags & WLAN_STA_PREAUTH))
		hostapd_sta_remove(hapd, sta->addr);

	ap_sta_hash_del(hapd, sta);
	ap_sta_list_del(hapd, sta);

	if (sta->aid > 0)
		hapd->sta_aid[sta->aid - 1] = NULL;

	hapd->num_sta--;
	if (sta->nonerp_set) {
		sta->nonerp_set = 0;
		hapd->iface->num_sta_non_erp--;
		if (hapd->iface->num_sta_non_erp == 0)
			set_beacon++;
	}

	if (sta->no_short_slot_time_set) {
		sta->no_short_slot_time_set = 0;
		hapd->iface->num_sta_no_short_slot_time--;
		if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
		    && hapd->iface->num_sta_no_short_slot_time == 0)
			set_beacon++;
	}

	if (sta->no_short_preamble_set) {
		sta->no_short_preamble_set = 0;
		hapd->iface->num_sta_no_short_preamble--;
		if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
		    && hapd->iface->num_sta_no_short_preamble == 0)
			set_beacon++;
	}

	if (set_beacon)
		ieee802_11_set_beacons(hapd->iface);

	eloop_cancel_timeout(ap_handle_timer, hapd, sta);
	eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);

	ieee802_1x_free_station(sta);
	wpa_auth_sta_deinit(sta->wpa_sm);
	rsn_preauth_free_station(hapd, sta);
	radius_client_flush_auth(hapd->radius, sta->addr);

	if (sta->last_assoc_req)
		free(sta->last_assoc_req);

	free(sta->challenge);

	free(sta);
}
Exemple #4
0
static void handle_disassoc(hostapd *hapd, struct ieee80211_mgmt *mgmt,
                            size_t len)
{
    struct sta_info *sta;

    if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.disassoc)) {
        printf("handle_disassoc - too short payload (len=%lu)\n",
               (unsigned long) len);
        return;
    }

    HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
                  "disassocation: STA=" MACSTR " reason_code=%d\n",
                  MAC2STR(mgmt->sa),
                  le_to_host16(mgmt->u.disassoc.reason_code));

    if (hapd->assoc_ap_state != DO_NOT_ASSOC &&
            memcmp(mgmt->sa, hapd->conf->assoc_ap_addr, ETH_ALEN) == 0) {
        printf("Assoc AP " MACSTR " sent disassociation "
               "(reason_code=%d) - try to authenticate\n",
               MAC2STR(hapd->conf->assoc_ap_addr),
               le_to_host16(mgmt->u.disassoc.reason_code));
        hapd->assoc_ap_state = AUTHENTICATE;
        ieee802_11_sta_authenticate(hapd, NULL);
        eloop_register_timeout(0, 500000, ieee802_11_sta_authenticate,
                               hapd, NULL);
        return;
    }

    sta = ap_get_sta(hapd, mgmt->sa);
    if (sta == NULL) {
        printf("Station " MACSTR " trying to disassociate, but it "
               "is not associated.\n", MAC2STR(mgmt->sa));
        return;
    }

    sta->flags &= ~WLAN_STA_ASSOC;
    wpa_sm_event(hapd, sta, WPA_DISASSOC);
    hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
                   HOSTAPD_LEVEL_INFO, "disassociated");
    sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
    ieee802_1x_set_port_enabled(hapd, sta, 0);
    /* Stop Accounting and IEEE 802.1X sessions, but leave the STA
     * authenticated. */
    accounting_sta_stop(hapd, sta);
    ieee802_1x_free_station(sta);
    hostapd_sta_remove(hapd, sta->addr);

    if (sta->timeout_next == STA_NULLFUNC ||
            sta->timeout_next == STA_DISASSOC) {
        sta->timeout_next = STA_DEAUTH;
        eloop_cancel_timeout(ap_handle_timer, hapd, sta);
        eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
                               hapd, sta);
    }
}
Exemple #5
0
static int ap_sta_remove(struct hostapd_data *hapd, struct sta_info *sta)
{
	ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);

	HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL, "Removing STA " MACSTR
		      " from kernel driver\n", MAC2STR(sta->addr));
	if (hostapd_sta_remove(hapd, sta->addr) &&
	    sta->flags & WLAN_STA_ASSOC) {
		printf("Could not remove station " MACSTR " from kernel "
		       "driver.\n", MAC2STR(sta->addr));
		return -1;
	}
	return 0;
}