Пример #1
0
int ieee802_11_build_ap_params(struct hostapd_data *hapd,
			       struct wpa_driver_ap_params *params)
{
	struct ieee80211_mgmt *head = NULL;
	u8 *tail = NULL;
	size_t head_len = 0, tail_len = 0;
	u8 *resp = NULL;
	size_t resp_len = 0;
#ifdef NEED_AP_MLME
	u16 capab_info;
	u8 *pos, *tailpos, *csa_pos;

#define BEACON_HEAD_BUF_SIZE 256
#define BEACON_TAIL_BUF_SIZE 512
	head = os_zalloc(BEACON_HEAD_BUF_SIZE);
	tail_len = BEACON_TAIL_BUF_SIZE;
#ifdef CONFIG_WPS
	if (hapd->conf->wps_state && hapd->wps_beacon_ie)
		tail_len += wpabuf_len(hapd->wps_beacon_ie);
#endif /* CONFIG_WPS */
#ifdef CONFIG_P2P
	if (hapd->p2p_beacon_ie)
		tail_len += wpabuf_len(hapd->p2p_beacon_ie);
#endif /* CONFIG_P2P */
#ifdef CONFIG_FST
	if (hapd->iface->fst_ies)
		tail_len += wpabuf_len(hapd->iface->fst_ies);
#endif /* CONFIG_FST */
	if (hapd->conf->vendor_elements)
		tail_len += wpabuf_len(hapd->conf->vendor_elements);

#ifdef CONFIG_IEEE80211AC
	if (hapd->conf->vendor_vht) {
		tail_len += 5 + 2 + sizeof(struct ieee80211_vht_capabilities) +
			2 + sizeof(struct ieee80211_vht_operation);
	}
#endif /* CONFIG_IEEE80211AC */

	tail_len += hostapd_mbo_ie_len(hapd);

	tailpos = tail = os_malloc(tail_len);
	if (head == NULL || tail == NULL) {
		wpa_printf(MSG_ERROR, "Failed to set beacon data");
		os_free(head);
		os_free(tail);
		return -1;
	}

	head->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
					   WLAN_FC_STYPE_BEACON);
	head->duration = host_to_le16(0);
	os_memset(head->da, 0xff, ETH_ALEN);

	os_memcpy(head->sa, hapd->own_addr, ETH_ALEN);
	os_memcpy(head->bssid, hapd->own_addr, ETH_ALEN);
	head->u.beacon.beacon_int =
		host_to_le16(hapd->iconf->beacon_int);

	/* hardware or low-level driver will setup seq_ctrl and timestamp */
	capab_info = hostapd_own_capab_info(hapd);
	head->u.beacon.capab_info = host_to_le16(capab_info);
	pos = &head->u.beacon.variable[0];

	/* SSID */
	*pos++ = WLAN_EID_SSID;
	if (hapd->conf->ignore_broadcast_ssid == 2) {
		/* clear the data, but keep the correct length of the SSID */
		*pos++ = hapd->conf->ssid.ssid_len;
		os_memset(pos, 0, hapd->conf->ssid.ssid_len);
		pos += hapd->conf->ssid.ssid_len;
	} else if (hapd->conf->ignore_broadcast_ssid) {
		*pos++ = 0; /* empty SSID */
	} else {
		*pos++ = hapd->conf->ssid.ssid_len;
		os_memcpy(pos, hapd->conf->ssid.ssid,
			  hapd->conf->ssid.ssid_len);
		pos += hapd->conf->ssid.ssid_len;
	}

	/* Supported rates */
	pos = hostapd_eid_supp_rates(hapd, pos);

	/* DS Params */
	pos = hostapd_eid_ds_params(hapd, pos);

	head_len = pos - (u8 *) head;

	tailpos = hostapd_eid_country(hapd, tailpos,
				      tail + BEACON_TAIL_BUF_SIZE - tailpos);

	/* Power Constraint element */
	tailpos = hostapd_eid_pwr_constraint(hapd, tailpos);

	/* CSA IE */
	csa_pos = hostapd_eid_csa(hapd, tailpos);
	if (csa_pos != tailpos)
		hapd->cs_c_off_beacon = csa_pos - tail - 1;
	tailpos = csa_pos;

	/* ERP Information element */
	tailpos = hostapd_eid_erp_info(hapd, tailpos);

	/* Extended supported rates */
	tailpos = hostapd_eid_ext_supp_rates(hapd, tailpos);

	/* RSN, MDIE, WPA */
	tailpos = hostapd_eid_wpa(hapd, tailpos, tail + BEACON_TAIL_BUF_SIZE -
				  tailpos);

	tailpos = hostapd_eid_rm_enabled_capab(hapd, tailpos,
					       tail + BEACON_TAIL_BUF_SIZE -
					       tailpos);

	tailpos = hostapd_eid_bss_load(hapd, tailpos,
				       tail + BEACON_TAIL_BUF_SIZE - tailpos);

	/* eCSA IE */
	csa_pos = hostapd_eid_ecsa(hapd, tailpos);
	if (csa_pos != tailpos)
		hapd->cs_c_off_ecsa_beacon = csa_pos - tail - 1;
	tailpos = csa_pos;

	tailpos = hostapd_eid_supported_op_classes(hapd, tailpos);

#ifdef CONFIG_IEEE80211N
	/* Secondary Channel Offset element */
	/* TODO: The standard doesn't specify a position for this element. */
	tailpos = hostapd_eid_secondary_channel(hapd, tailpos);

	tailpos = hostapd_eid_ht_capabilities(hapd, tailpos);
	tailpos = hostapd_eid_ht_operation(hapd, tailpos);
#endif /* CONFIG_IEEE80211N */

	tailpos = hostapd_eid_ext_capab(hapd, tailpos);

	/*
	 * TODO: Time Advertisement element should only be included in some
	 * DTIM Beacon frames.
	 */
	tailpos = hostapd_eid_time_adv(hapd, tailpos);

	tailpos = hostapd_eid_interworking(hapd, tailpos);
	tailpos = hostapd_eid_adv_proto(hapd, tailpos);
	tailpos = hostapd_eid_roaming_consortium(hapd, tailpos);

#ifdef CONFIG_FST
	if (hapd->iface->fst_ies) {
		os_memcpy(tailpos, wpabuf_head(hapd->iface->fst_ies),
			  wpabuf_len(hapd->iface->fst_ies));
		tailpos += wpabuf_len(hapd->iface->fst_ies);
	}
#endif /* CONFIG_FST */

#ifdef CONFIG_IEEE80211AC
	if (hapd->iconf->ieee80211ac && !hapd->conf->disable_11ac) {
		tailpos = hostapd_eid_vht_capabilities(hapd, tailpos);
		tailpos = hostapd_eid_vht_operation(hapd, tailpos);
		tailpos = hostapd_eid_txpower_envelope(hapd, tailpos);
		tailpos = hostapd_eid_wb_chsw_wrapper(hapd, tailpos);
	}
	if (hapd->conf->vendor_vht)
		tailpos = hostapd_eid_vendor_vht(hapd, tailpos);
#endif /* CONFIG_IEEE80211AC */

	/* Wi-Fi Alliance WMM */
	tailpos = hostapd_eid_wmm(hapd, tailpos);

#ifdef CONFIG_WPS
	if (hapd->conf->wps_state && hapd->wps_beacon_ie) {
		os_memcpy(tailpos, wpabuf_head(hapd->wps_beacon_ie),
			  wpabuf_len(hapd->wps_beacon_ie));
		tailpos += wpabuf_len(hapd->wps_beacon_ie);
	}
#endif /* CONFIG_WPS */

#ifdef CONFIG_P2P
	if ((hapd->conf->p2p & P2P_ENABLED) && hapd->p2p_beacon_ie) {
		os_memcpy(tailpos, wpabuf_head(hapd->p2p_beacon_ie),
			  wpabuf_len(hapd->p2p_beacon_ie));
		tailpos += wpabuf_len(hapd->p2p_beacon_ie);
	}
#endif /* CONFIG_P2P */
#ifdef CONFIG_P2P_MANAGER
	if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) ==
	    P2P_MANAGE)
		tailpos = hostapd_eid_p2p_manage(hapd, tailpos);
#endif /* CONFIG_P2P_MANAGER */

#ifdef CONFIG_HS20
	tailpos = hostapd_eid_hs20_indication(hapd, tailpos);
	tailpos = hostapd_eid_osen(hapd, tailpos);
#endif /* CONFIG_HS20 */

	tailpos = hostapd_eid_mbo(hapd, tailpos, tail + tail_len - tailpos);

	if (hapd->conf->vendor_elements) {
		os_memcpy(tailpos, wpabuf_head(hapd->conf->vendor_elements),
			  wpabuf_len(hapd->conf->vendor_elements));
		tailpos += wpabuf_len(hapd->conf->vendor_elements);
	}

	tail_len = tailpos > tail ? tailpos - tail : 0;

	resp = hostapd_probe_resp_offloads(hapd, &resp_len);
#endif /* NEED_AP_MLME */

	os_memset(params, 0, sizeof(*params));
	params->head = (u8 *) head;
	params->head_len = head_len;
	params->tail = tail;
	params->tail_len = tail_len;
	params->proberesp = resp;
	params->proberesp_len = resp_len;
	params->dtim_period = hapd->conf->dtim_period;
	params->beacon_int = hapd->iconf->beacon_int;
	params->basic_rates = hapd->iface->basic_rates;
	params->ssid = hapd->conf->ssid.ssid;
	params->ssid_len = hapd->conf->ssid.ssid_len;
	if ((hapd->conf->wpa & (WPA_PROTO_WPA | WPA_PROTO_RSN)) ==
	    (WPA_PROTO_WPA | WPA_PROTO_RSN))
		params->pairwise_ciphers = hapd->conf->wpa_pairwise |
			hapd->conf->rsn_pairwise;
	else if (hapd->conf->wpa & WPA_PROTO_RSN)
		params->pairwise_ciphers = hapd->conf->rsn_pairwise;
	else if (hapd->conf->wpa & WPA_PROTO_WPA)
		params->pairwise_ciphers = hapd->conf->wpa_pairwise;
	params->group_cipher = hapd->conf->wpa_group;
	params->key_mgmt_suites = hapd->conf->wpa_key_mgmt;
	params->auth_algs = hapd->conf->auth_algs;
	params->wpa_version = hapd->conf->wpa;
	params->privacy = hapd->conf->ssid.wep.keys_set || hapd->conf->wpa ||
		(hapd->conf->ieee802_1x &&
		 (hapd->conf->default_wep_key_len ||
		  hapd->conf->individual_wep_key_len));
	switch (hapd->conf->ignore_broadcast_ssid) {
	case 0:
		params->hide_ssid = NO_SSID_HIDING;
		break;
	case 1:
		params->hide_ssid = HIDDEN_SSID_ZERO_LEN;
		break;
	case 2:
		params->hide_ssid = HIDDEN_SSID_ZERO_CONTENTS;
		break;
	}
	params->isolate = hapd->conf->isolate;
	params->smps_mode = hapd->iconf->ht_capab & HT_CAP_INFO_SMPS_MASK;
#ifdef NEED_AP_MLME
	params->cts_protect = !!(ieee802_11_erp_info(hapd) &
				ERP_INFO_USE_PROTECTION);
	params->preamble = hapd->iface->num_sta_no_short_preamble == 0 &&
		hapd->iconf->preamble == SHORT_PREAMBLE;
	if (hapd->iface->current_mode &&
	    hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G)
		params->short_slot_time =
			hapd->iface->num_sta_no_short_slot_time > 0 ? 0 : 1;
	else
		params->short_slot_time = -1;
	if (!hapd->iconf->ieee80211n || hapd->conf->disable_11n)
		params->ht_opmode = -1;
	else
		params->ht_opmode = hapd->iface->ht_op_mode;
#endif /* NEED_AP_MLME */
	params->interworking = hapd->conf->interworking;
	if (hapd->conf->interworking &&
	    !is_zero_ether_addr(hapd->conf->hessid))
		params->hessid = hapd->conf->hessid;
	params->access_network_type = hapd->conf->access_network_type;
	params->ap_max_inactivity = hapd->conf->ap_max_inactivity;
#ifdef CONFIG_P2P
	params->p2p_go_ctwindow = hapd->iconf->p2p_go_ctwindow;
#endif /* CONFIG_P2P */
#ifdef CONFIG_HS20
	params->disable_dgaf = hapd->conf->disable_dgaf;
	if (hapd->conf->osen) {
		params->privacy = 1;
		params->osen = 1;
	}
#endif /* CONFIG_HS20 */
	params->pbss = hapd->conf->pbss;
	return 0;
}
Пример #2
0
void ieee802_11_set_beacon(struct hostapd_data *hapd)
{
	struct ieee80211_mgmt *head = NULL;
	u8 *tail = NULL;
	size_t head_len = 0, tail_len = 0;
	u8 *resp = NULL;
	size_t resp_len = 0;
	struct wpa_driver_ap_params params;
	struct wpabuf *beacon, *proberesp, *assocresp;
#ifdef NEED_AP_MLME
	u16 capab_info;
	u8 *pos, *tailpos;
#endif /* NEED_AP_MLME */

	hapd->beacon_set_done = 1;

#ifdef NEED_AP_MLME

#define BEACON_HEAD_BUF_SIZE 256
#define BEACON_TAIL_BUF_SIZE 512
	head = os_zalloc(BEACON_HEAD_BUF_SIZE);
	tail_len = BEACON_TAIL_BUF_SIZE;
#ifdef CONFIG_WPS
	if (hapd->conf->wps_state && hapd->wps_beacon_ie)
		tail_len += wpabuf_len(hapd->wps_beacon_ie);
#endif /* CONFIG_WPS */
#ifdef CONFIG_P2P
	if (hapd->p2p_beacon_ie)
		tail_len += wpabuf_len(hapd->p2p_beacon_ie);
#endif /* CONFIG_P2P */
	if (hapd->conf->vendor_elements)
		tail_len += wpabuf_len(hapd->conf->vendor_elements);
	tailpos = tail = os_malloc(tail_len);
	if (head == NULL || tail == NULL) {
		wpa_printf(MSG_ERROR, "Failed to set beacon data");
		os_free(head);
		os_free(tail);
		return;
	}

	head->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
					   WLAN_FC_STYPE_BEACON);
	head->duration = host_to_le16(0);
	os_memset(head->da, 0xff, ETH_ALEN);

	os_memcpy(head->sa, hapd->own_addr, ETH_ALEN);
	os_memcpy(head->bssid, hapd->own_addr, ETH_ALEN);
	head->u.beacon.beacon_int =
		host_to_le16(hapd->iconf->beacon_int);

	/* hardware or low-level driver will setup seq_ctrl and timestamp */
	capab_info = hostapd_own_capab_info(hapd, NULL, 0);
	head->u.beacon.capab_info = host_to_le16(capab_info);
	pos = &head->u.beacon.variable[0];

	/* SSID */
	//Tymon added for load-balancing
	if(set_beacon_req){
		if( (hapd->num_sta >= hapd->conf->max_num_sta) 
				&& (hapd->conf->ignore_broadcast_ssid == 0) )
			hapd->conf->ignore_broadcast_ssid = 1;
		else if( hapd->num_sta < hapd->conf->max_num_sta
				&& (hapd->conf->ignore_broadcast_ssid)
				&& set_beacon_req )
			hapd->conf->ignore_broadcast_ssid = 0;
		set_beacon_req = 0;
	}
	//
	*pos++ = WLAN_EID_SSID;
	if (hapd->conf->ignore_broadcast_ssid == 2) {
		/* clear the data, but keep the correct length of the SSID */
		*pos++ = hapd->conf->ssid.ssid_len;
		os_memset(pos, 0, hapd->conf->ssid.ssid_len);
		pos += hapd->conf->ssid.ssid_len;
	} else if (hapd->conf->ignore_broadcast_ssid) {
		*pos++ = 0; /* empty SSID */
	} else {
		*pos++ = hapd->conf->ssid.ssid_len;
		os_memcpy(pos, hapd->conf->ssid.ssid,
			  hapd->conf->ssid.ssid_len);
		pos += hapd->conf->ssid.ssid_len;
	}

	/* Supported rates */
	pos = hostapd_eid_supp_rates(hapd, pos);

	/* DS Params */
	pos = hostapd_eid_ds_params(hapd, pos);

	head_len = pos - (u8 *) head;

	tailpos = hostapd_eid_country(hapd, tailpos,
				      tail + BEACON_TAIL_BUF_SIZE - tailpos);

	/* ERP Information element */
	tailpos = hostapd_eid_erp_info(hapd, tailpos);

	/* Extended supported rates */
	tailpos = hostapd_eid_ext_supp_rates(hapd, tailpos);

	/* RSN, MDIE, WPA */
	tailpos = hostapd_eid_wpa(hapd, tailpos, tail + BEACON_TAIL_BUF_SIZE -
				  tailpos);

#ifdef CONFIG_IEEE80211N
	tailpos = hostapd_eid_ht_capabilities(hapd, tailpos);
	tailpos = hostapd_eid_ht_operation(hapd, tailpos);
#endif /* CONFIG_IEEE80211N */

	tailpos = hostapd_eid_ext_capab(hapd, tailpos);

	/*
	 * TODO: Time Advertisement element should only be included in some
	 * DTIM Beacon frames.
	 */
	tailpos = hostapd_eid_time_adv(hapd, tailpos);

	tailpos = hostapd_eid_interworking(hapd, tailpos);
	tailpos = hostapd_eid_adv_proto(hapd, tailpos);
	tailpos = hostapd_eid_roaming_consortium(hapd, tailpos);

#ifdef CONFIG_IEEE80211AC
	tailpos = hostapd_eid_vht_capabilities(hapd, tailpos);
	tailpos = hostapd_eid_vht_operation(hapd, tailpos);
#endif /* CONFIG_IEEE80211AC */

	/* Wi-Fi Alliance WMM */
	tailpos = hostapd_eid_wmm(hapd, tailpos);

#ifdef CONFIG_WPS
	if (hapd->conf->wps_state && hapd->wps_beacon_ie) {
		os_memcpy(tailpos, wpabuf_head(hapd->wps_beacon_ie),
			  wpabuf_len(hapd->wps_beacon_ie));
		tailpos += wpabuf_len(hapd->wps_beacon_ie);
	}
#endif /* CONFIG_WPS */

#ifdef CONFIG_P2P
	if ((hapd->conf->p2p & P2P_ENABLED) && hapd->p2p_beacon_ie) {
		os_memcpy(tailpos, wpabuf_head(hapd->p2p_beacon_ie),
			  wpabuf_len(hapd->p2p_beacon_ie));
		tailpos += wpabuf_len(hapd->p2p_beacon_ie);
	}
#endif /* CONFIG_P2P */
#ifdef CONFIG_P2P_MANAGER
	if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) ==
	    P2P_MANAGE)
		tailpos = hostapd_eid_p2p_manage(hapd, tailpos);
#endif /* CONFIG_P2P_MANAGER */

#ifdef CONFIG_HS20
	tailpos = hostapd_eid_hs20_indication(hapd, tailpos);
#endif /* CONFIG_HS20 */

	if (hapd->conf->vendor_elements) {
		os_memcpy(tailpos, wpabuf_head(hapd->conf->vendor_elements),
			  wpabuf_len(hapd->conf->vendor_elements));
		tailpos += wpabuf_len(hapd->conf->vendor_elements);
	}

	tail_len = tailpos > tail ? tailpos - tail : 0;

	resp = hostapd_probe_resp_offloads(hapd, &resp_len);
#endif /* NEED_AP_MLME */

	os_memset(&params, 0, sizeof(params));
	params.head = (u8 *) head;
	params.head_len = head_len;
	params.tail = tail;
	params.tail_len = tail_len;
	params.proberesp = resp;
	params.proberesp_len = resp_len;
	params.dtim_period = hapd->conf->dtim_period;
	params.beacon_int = hapd->iconf->beacon_int;
	params.basic_rates = hapd->iface->basic_rates;
	params.ssid = hapd->conf->ssid.ssid;
	params.ssid_len = hapd->conf->ssid.ssid_len;
	params.pairwise_ciphers = hapd->conf->rsn_pairwise ?
		hapd->conf->rsn_pairwise : hapd->conf->wpa_pairwise;
	params.group_cipher = hapd->conf->wpa_group;
	params.key_mgmt_suites = hapd->conf->wpa_key_mgmt;
	params.auth_algs = hapd->conf->auth_algs;
	params.wpa_version = hapd->conf->wpa;
	params.privacy = hapd->conf->ssid.wep.keys_set || hapd->conf->wpa ||
		(hapd->conf->ieee802_1x &&
		 (hapd->conf->default_wep_key_len ||
		  hapd->conf->individual_wep_key_len));
	switch (hapd->conf->ignore_broadcast_ssid) {
	case 0:
		params.hide_ssid = NO_SSID_HIDING;
		break;
	case 1:
		params.hide_ssid = HIDDEN_SSID_ZERO_LEN;
		break;
	case 2:
		params.hide_ssid = HIDDEN_SSID_ZERO_CONTENTS;
		break;
	}
	hostapd_build_ap_extra_ies(hapd, &beacon, &proberesp, &assocresp);
	params.beacon_ies = beacon;
	params.proberesp_ies = proberesp;
	params.assocresp_ies = assocresp;
	params.isolate = hapd->conf->isolate;
#ifdef NEED_AP_MLME
	params.cts_protect = !!(ieee802_11_erp_info(hapd) &
				ERP_INFO_USE_PROTECTION);
	params.preamble = hapd->iface->num_sta_no_short_preamble == 0 &&
		hapd->iconf->preamble == SHORT_PREAMBLE;
	if (hapd->iface->current_mode &&
	    hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G)
		params.short_slot_time =
			hapd->iface->num_sta_no_short_slot_time > 0 ? 0 : 1;
	else
		params.short_slot_time = -1;
	if (!hapd->iconf->ieee80211n || hapd->conf->disable_11n)
		params.ht_opmode = -1;
	else
		params.ht_opmode = hapd->iface->ht_op_mode;
#endif /* NEED_AP_MLME */
	params.interworking = hapd->conf->interworking;
	if (hapd->conf->interworking &&
	    !is_zero_ether_addr(hapd->conf->hessid))
		params.hessid = hapd->conf->hessid;
	params.access_network_type = hapd->conf->access_network_type;
	params.ap_max_inactivity = hapd->conf->ap_max_inactivity;
#ifdef CONFIG_HS20
	params.disable_dgaf = hapd->conf->disable_dgaf;
#endif /* CONFIG_HS20 */
	if (hostapd_drv_set_ap(hapd, &params))
		wpa_printf(MSG_ERROR, "Failed to set beacon parameters");
	hostapd_free_ap_extra_ies(hapd, beacon, proberesp, assocresp);

	os_free(tail);
	os_free(head);
	os_free(resp);
}
Пример #3
0
static u8 * hostapd_gen_probe_resp(struct hostapd_data *hapd,
				   const struct ieee80211_mgmt *req,
				   int is_p2p, size_t *resp_len)
{
	struct ieee80211_mgmt *resp;
	u8 *pos, *epos, *csa_pos;
	size_t buflen;

#define MAX_PROBERESP_LEN 768
	buflen = MAX_PROBERESP_LEN;
#ifdef CONFIG_WPS
	if (hapd->wps_probe_resp_ie)
		buflen += wpabuf_len(hapd->wps_probe_resp_ie);
#endif /* CONFIG_WPS */
#ifdef CONFIG_P2P
	if (hapd->p2p_probe_resp_ie)
		buflen += wpabuf_len(hapd->p2p_probe_resp_ie);
#endif /* CONFIG_P2P */
#ifdef CONFIG_FST
	if (hapd->iface->fst_ies)
		buflen += wpabuf_len(hapd->iface->fst_ies);
#endif /* CONFIG_FST */
	if (hapd->conf->vendor_elements)
		buflen += wpabuf_len(hapd->conf->vendor_elements);
	if (hapd->conf->vendor_vht) {
		buflen += 5 + 2 + sizeof(struct ieee80211_vht_capabilities) +
			2 + sizeof(struct ieee80211_vht_operation);
	}

	buflen += hostapd_mbo_ie_len(hapd);

	resp = os_zalloc(buflen);
	if (resp == NULL)
		return NULL;

	epos = ((u8 *) resp) + MAX_PROBERESP_LEN;

	resp->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
					   WLAN_FC_STYPE_PROBE_RESP);
	if (req)
		os_memcpy(resp->da, req->sa, ETH_ALEN);
	os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN);

	os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN);
	resp->u.probe_resp.beacon_int =
		host_to_le16(hapd->iconf->beacon_int);

	/* hardware or low-level driver will setup seq_ctrl and timestamp */
	resp->u.probe_resp.capab_info =
		host_to_le16(hostapd_own_capab_info(hapd));

	pos = resp->u.probe_resp.variable;
	*pos++ = WLAN_EID_SSID;
	*pos++ = hapd->conf->ssid.ssid_len;
	os_memcpy(pos, hapd->conf->ssid.ssid, hapd->conf->ssid.ssid_len);
	pos += hapd->conf->ssid.ssid_len;

	/* Supported rates */
	pos = hostapd_eid_supp_rates(hapd, pos);

	/* DS Params */
	pos = hostapd_eid_ds_params(hapd, pos);

	pos = hostapd_eid_country(hapd, pos, epos - pos);

	/* Power Constraint element */
	pos = hostapd_eid_pwr_constraint(hapd, pos);

	/* CSA IE */
	csa_pos = hostapd_eid_csa(hapd, pos);
	if (csa_pos != pos)
		hapd->cs_c_off_proberesp = csa_pos - (u8 *) resp - 1;
	pos = csa_pos;

	/* ERP Information element */
	pos = hostapd_eid_erp_info(hapd, pos);

	/* Extended supported rates */
	pos = hostapd_eid_ext_supp_rates(hapd, pos);

	/* RSN, MDIE, WPA */
	pos = hostapd_eid_wpa(hapd, pos, epos - pos);

	pos = hostapd_eid_bss_load(hapd, pos, epos - pos);

	pos = hostapd_eid_rm_enabled_capab(hapd, pos, epos - pos);

	/* eCSA IE */
	csa_pos = hostapd_eid_ecsa(hapd, pos);
	if (csa_pos != pos)
		hapd->cs_c_off_ecsa_proberesp = csa_pos - (u8 *) resp - 1;
	pos = csa_pos;

	pos = hostapd_eid_supported_op_classes(hapd, pos);

#ifdef CONFIG_IEEE80211N
	/* Secondary Channel Offset element */
	/* TODO: The standard doesn't specify a position for this element. */
	pos = hostapd_eid_secondary_channel(hapd, pos);

	pos = hostapd_eid_ht_capabilities(hapd, pos);
	pos = hostapd_eid_ht_operation(hapd, pos);
#endif /* CONFIG_IEEE80211N */

	pos = hostapd_eid_ext_capab(hapd, pos);

	pos = hostapd_eid_time_adv(hapd, pos);
	pos = hostapd_eid_time_zone(hapd, pos);

	pos = hostapd_eid_interworking(hapd, pos);
	pos = hostapd_eid_adv_proto(hapd, pos);
	pos = hostapd_eid_roaming_consortium(hapd, pos);

#ifdef CONFIG_FST
	if (hapd->iface->fst_ies) {
		os_memcpy(pos, wpabuf_head(hapd->iface->fst_ies),
			  wpabuf_len(hapd->iface->fst_ies));
		pos += wpabuf_len(hapd->iface->fst_ies);
	}
#endif /* CONFIG_FST */

#ifdef CONFIG_IEEE80211AC
	if (hapd->iconf->ieee80211ac && !hapd->conf->disable_11ac) {
		pos = hostapd_eid_vht_capabilities(hapd, pos);
		pos = hostapd_eid_vht_operation(hapd, pos);
		pos = hostapd_eid_txpower_envelope(hapd, pos);
		pos = hostapd_eid_wb_chsw_wrapper(hapd, pos);
	}
	if (hapd->conf->vendor_vht)
		pos = hostapd_eid_vendor_vht(hapd, pos);
#endif /* CONFIG_IEEE80211AC */

	/* Wi-Fi Alliance WMM */
	pos = hostapd_eid_wmm(hapd, pos);

#ifdef CONFIG_WPS
	if (hapd->conf->wps_state && hapd->wps_probe_resp_ie) {
		os_memcpy(pos, wpabuf_head(hapd->wps_probe_resp_ie),
			  wpabuf_len(hapd->wps_probe_resp_ie));
		pos += wpabuf_len(hapd->wps_probe_resp_ie);
	}
#endif /* CONFIG_WPS */

#ifdef CONFIG_P2P
	if ((hapd->conf->p2p & P2P_ENABLED) && is_p2p &&
	    hapd->p2p_probe_resp_ie) {
		os_memcpy(pos, wpabuf_head(hapd->p2p_probe_resp_ie),
			  wpabuf_len(hapd->p2p_probe_resp_ie));
		pos += wpabuf_len(hapd->p2p_probe_resp_ie);
	}
#endif /* CONFIG_P2P */
#ifdef CONFIG_P2P_MANAGER
	if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) ==
	    P2P_MANAGE)
		pos = hostapd_eid_p2p_manage(hapd, pos);
#endif /* CONFIG_P2P_MANAGER */

#ifdef CONFIG_HS20
	pos = hostapd_eid_hs20_indication(hapd, pos);
	pos = hostapd_eid_osen(hapd, pos);
#endif /* CONFIG_HS20 */

	pos = hostapd_eid_mbo(hapd, pos, (u8 *) resp + buflen - pos);

	if (hapd->conf->vendor_elements) {
		os_memcpy(pos, wpabuf_head(hapd->conf->vendor_elements),
			  wpabuf_len(hapd->conf->vendor_elements));
		pos += wpabuf_len(hapd->conf->vendor_elements);
	}

	*resp_len = pos - (u8 *) resp;
	return (u8 *) resp;
}
Пример #4
0
static u8 * hostapd_gen_probe_resp(struct hostapd_data *hapd,
				   struct sta_info *sta,
				   const struct ieee80211_mgmt *req,
				   int is_p2p, size_t *resp_len)
{
	struct ieee80211_mgmt *resp;
	u8 *pos, *epos;
	size_t buflen;

#define MAX_PROBERESP_LEN 768
	buflen = MAX_PROBERESP_LEN;
#ifdef CONFIG_WPS
	if (hapd->wps_probe_resp_ie)
		buflen += wpabuf_len(hapd->wps_probe_resp_ie);
#endif /* CONFIG_WPS */
#ifdef CONFIG_P2P
	if (hapd->p2p_probe_resp_ie)
		buflen += wpabuf_len(hapd->p2p_probe_resp_ie);
#endif /* CONFIG_P2P */
	if (hapd->conf->vendor_elements)
		buflen += wpabuf_len(hapd->conf->vendor_elements);
	resp = os_zalloc(buflen);
	if (resp == NULL)
		return NULL;

	epos = ((u8 *) resp) + MAX_PROBERESP_LEN;

	resp->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
					   WLAN_FC_STYPE_PROBE_RESP);
	if (req)
		os_memcpy(resp->da, req->sa, ETH_ALEN);
	os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN);

	os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN);
	resp->u.probe_resp.beacon_int =
		host_to_le16(hapd->iconf->beacon_int);

	/* hardware or low-level driver will setup seq_ctrl and timestamp */
	resp->u.probe_resp.capab_info =
		host_to_le16(hostapd_own_capab_info(hapd, sta, 1));

	pos = resp->u.probe_resp.variable;
	*pos++ = WLAN_EID_SSID;
	*pos++ = hapd->conf->ssid.ssid_len;
	os_memcpy(pos, hapd->conf->ssid.ssid, hapd->conf->ssid.ssid_len);
	pos += hapd->conf->ssid.ssid_len;

	/* Supported rates */
	pos = hostapd_eid_supp_rates(hapd, pos);

	/* DS Params */
	pos = hostapd_eid_ds_params(hapd, pos);

	pos = hostapd_eid_country(hapd, pos, epos - pos);

	/* ERP Information element */
	pos = hostapd_eid_erp_info(hapd, pos);

	/* Extended supported rates */
	pos = hostapd_eid_ext_supp_rates(hapd, pos);

	/* RSN, MDIE, WPA */
	pos = hostapd_eid_wpa(hapd, pos, epos - pos);

#ifdef CONFIG_IEEE80211N
	pos = hostapd_eid_ht_capabilities(hapd, pos);
	pos = hostapd_eid_ht_operation(hapd, pos);
#endif /* CONFIG_IEEE80211N */

	pos = hostapd_eid_ext_capab(hapd, pos);

	pos = hostapd_eid_time_adv(hapd, pos);
	pos = hostapd_eid_time_zone(hapd, pos);

	pos = hostapd_eid_interworking(hapd, pos);
	pos = hostapd_eid_adv_proto(hapd, pos);
	pos = hostapd_eid_roaming_consortium(hapd, pos);

#ifdef CONFIG_IEEE80211AC
	pos = hostapd_eid_vht_capabilities(hapd, pos);
	pos = hostapd_eid_vht_operation(hapd, pos);
#endif /* CONFIG_IEEE80211AC */

	/* Wi-Fi Alliance WMM */
	pos = hostapd_eid_wmm(hapd, pos);

#ifdef CONFIG_WPS
	if (hapd->conf->wps_state && hapd->wps_probe_resp_ie) {
		os_memcpy(pos, wpabuf_head(hapd->wps_probe_resp_ie),
			  wpabuf_len(hapd->wps_probe_resp_ie));
		pos += wpabuf_len(hapd->wps_probe_resp_ie);
	}
#endif /* CONFIG_WPS */

#ifdef CONFIG_P2P
	if ((hapd->conf->p2p & P2P_ENABLED) && is_p2p &&
	    hapd->p2p_probe_resp_ie) {
		os_memcpy(pos, wpabuf_head(hapd->p2p_probe_resp_ie),
			  wpabuf_len(hapd->p2p_probe_resp_ie));
		pos += wpabuf_len(hapd->p2p_probe_resp_ie);
	}
#endif /* CONFIG_P2P */
#ifdef CONFIG_P2P_MANAGER
	if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) ==
	    P2P_MANAGE)
		pos = hostapd_eid_p2p_manage(hapd, pos);
#endif /* CONFIG_P2P_MANAGER */

#ifdef CONFIG_HS20
	pos = hostapd_eid_hs20_indication(hapd, pos);
#endif /* CONFIG_HS20 */

	if (hapd->conf->vendor_elements) {
		os_memcpy(pos, wpabuf_head(hapd->conf->vendor_elements),
			  wpabuf_len(hapd->conf->vendor_elements));
		pos += wpabuf_len(hapd->conf->vendor_elements);
	}

	*resp_len = pos - (u8 *) resp;
	return (u8 *) resp;
}
Пример #5
0
int hostapd_build_ap_extra_ies(struct hostapd_data *hapd,
			       struct wpabuf **beacon_ret,
			       struct wpabuf **proberesp_ret,
			       struct wpabuf **assocresp_ret)
{
	struct wpabuf *beacon = NULL, *proberesp = NULL, *assocresp = NULL;
	u8 buf[200], *pos;

	*beacon_ret = *proberesp_ret = *assocresp_ret = NULL;

	pos = buf;
	pos = hostapd_eid_time_adv(hapd, pos);
	if (pos != buf) {
		if (wpabuf_resize(&beacon, pos - buf) != 0)
			goto fail;
		wpabuf_put_data(beacon, buf, pos - buf);
	}
	pos = hostapd_eid_time_zone(hapd, pos);
	if (pos != buf) {
		if (wpabuf_resize(&proberesp, pos - buf) != 0)
			goto fail;
		wpabuf_put_data(proberesp, buf, pos - buf);
	}

	pos = buf;
	pos = hostapd_eid_ext_capab(hapd, pos);
	if (pos != buf) {
		if (wpabuf_resize(&assocresp, pos - buf) != 0)
			goto fail;
		wpabuf_put_data(assocresp, buf, pos - buf);
	}
	pos = hostapd_eid_interworking(hapd, pos);
	pos = hostapd_eid_adv_proto(hapd, pos);
	pos = hostapd_eid_roaming_consortium(hapd, pos);
	if (pos != buf) {
		if (wpabuf_resize(&beacon, pos - buf) != 0)
			goto fail;
		wpabuf_put_data(beacon, buf, pos - buf);

		if (wpabuf_resize(&proberesp, pos - buf) != 0)
			goto fail;
		wpabuf_put_data(proberesp, buf, pos - buf);
	}

	if (hapd->wps_beacon_ie) {
		if (wpabuf_resize(&beacon, wpabuf_len(hapd->wps_beacon_ie)) <
		    0)
			goto fail;
		wpabuf_put_buf(beacon, hapd->wps_beacon_ie);
	}

	if (hapd->wps_probe_resp_ie) {
		if (wpabuf_resize(&proberesp,
				  wpabuf_len(hapd->wps_probe_resp_ie)) < 0)
			goto fail;
		wpabuf_put_buf(proberesp, hapd->wps_probe_resp_ie);
	}

#ifdef CONFIG_P2P
	if (hapd->p2p_beacon_ie) {
		if (wpabuf_resize(&beacon, wpabuf_len(hapd->p2p_beacon_ie)) <
		    0)
			goto fail;
		wpabuf_put_buf(beacon, hapd->p2p_beacon_ie);
	}

	if (hapd->p2p_probe_resp_ie) {
		if (wpabuf_resize(&proberesp,
				  wpabuf_len(hapd->p2p_probe_resp_ie)) < 0)
			goto fail;
		wpabuf_put_buf(proberesp, hapd->p2p_probe_resp_ie);
	}
#endif /* CONFIG_P2P */

#ifdef CONFIG_P2P_MANAGER
	if (hapd->conf->p2p & P2P_MANAGE) {
		if (wpabuf_resize(&beacon, 100) == 0) {
			u8 *start, *p;
			start = wpabuf_put(beacon, 0);
			p = hostapd_eid_p2p_manage(hapd, start);
			wpabuf_put(beacon, p - start);
		}

		if (wpabuf_resize(&proberesp, 100) == 0) {
			u8 *start, *p;
			start = wpabuf_put(proberesp, 0);
			p = hostapd_eid_p2p_manage(hapd, start);
			wpabuf_put(proberesp, p - start);
		}
	}
#endif /* CONFIG_P2P_MANAGER */

#ifdef CONFIG_WPS2
	if (hapd->conf->wps_state) {
		struct wpabuf *a = wps_build_assoc_resp_ie();
		if (a && wpabuf_resize(&assocresp, wpabuf_len(a)) == 0)
			wpabuf_put_buf(assocresp, a);
		wpabuf_free(a);
	}
#endif /* CONFIG_WPS2 */

#ifdef CONFIG_P2P_MANAGER
	if (hapd->conf->p2p & P2P_MANAGE) {
		if (wpabuf_resize(&assocresp, 100) == 0) {
			u8 *start, *p;
			start = wpabuf_put(assocresp, 0);
			p = hostapd_eid_p2p_manage(hapd, start);
			wpabuf_put(assocresp, p - start);
		}
	}
#endif /* CONFIG_P2P_MANAGER */

#ifdef CONFIG_WIFI_DISPLAY
	if (hapd->p2p_group) {
		struct wpabuf *a;
		a = p2p_group_assoc_resp_ie(hapd->p2p_group, P2P_SC_SUCCESS);
		if (a && wpabuf_resize(&assocresp, wpabuf_len(a)) == 0)
			wpabuf_put_buf(assocresp, a);
		wpabuf_free(a);
	}
#endif /* CONFIG_WIFI_DISPLAY */

#ifdef CONFIG_HS20
	pos = buf;
	pos = hostapd_eid_hs20_indication(hapd, pos);
	if (pos != buf) {
		if (wpabuf_resize(&beacon, pos - buf) != 0)
			goto fail;
		wpabuf_put_data(beacon, buf, pos - buf);

		if (wpabuf_resize(&proberesp, pos - buf) != 0)
			goto fail;
		wpabuf_put_data(proberesp, buf, pos - buf);
	}
#endif /* CONFIG_HS20 */

	*beacon_ret = beacon;
	*proberesp_ret = proberesp;
	*assocresp_ret = assocresp;

	return 0;

fail:
	wpabuf_free(beacon);
	wpabuf_free(proberesp);
	wpabuf_free(assocresp);
	return -1;
}
Пример #6
0
void handle_probe_req(struct hostapd_data *hapd,
		      const struct ieee80211_mgmt *mgmt, size_t len)
{
	struct ieee80211_mgmt *resp;
	struct ieee802_11_elems elems;
	char *ssid;
	u8 *pos, *epos;
	const u8 *ie;
	size_t ssid_len, ie_len;
	struct sta_info *sta = NULL;
	size_t buflen;
	size_t i;
	int noack;

	ie = mgmt->u.probe_req.variable;
	if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req))
		return;
	ie_len = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req));

	for (i = 0; hapd->probereq_cb && i < hapd->num_probereq_cb; i++)
		if (hapd->probereq_cb[i].cb(hapd->probereq_cb[i].ctx,
					    mgmt->sa, mgmt->da, mgmt->bssid,
					    ie, ie_len) > 0)
			return;

	if (!hapd->iconf->send_probe_response)
		return;

	if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) {
		wpa_printf(MSG_DEBUG, "Could not parse ProbeReq from " MACSTR,
			   MAC2STR(mgmt->sa));
		return;
	}

	ssid = NULL;
	ssid_len = 0;

	if ((!elems.ssid || !elems.supp_rates)) {
		wpa_printf(MSG_DEBUG, "STA " MACSTR " sent probe request "
			   "without SSID or supported rates element",
			   MAC2STR(mgmt->sa));
		return;
	}

#ifdef CONFIG_P2P
	if (hapd->p2p && elems.wps_ie) {
		struct wpabuf *wps;
		wps = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA);
		if (wps && !p2p_group_match_dev_type(hapd->p2p_group, wps)) {
			wpa_printf(MSG_MSGDUMP, "P2P: Ignore Probe Request "
				   "due to mismatch with Requested Device "
				   "Type");
			wpabuf_free(wps);
			return;
		}
		wpabuf_free(wps);
	}
#endif /* CONFIG_P2P */

	if (hapd->conf->ignore_broadcast_ssid && elems.ssid_len == 0) {
		wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR " for "
			   "broadcast SSID ignored", MAC2STR(mgmt->sa));
		return;
	}

	sta = ap_get_sta(hapd, mgmt->sa);

#ifdef CONFIG_P2P
	if ((hapd->conf->p2p & P2P_GROUP_OWNER) &&
	    elems.ssid_len == P2P_WILDCARD_SSID_LEN &&
	    os_memcmp(elems.ssid, P2P_WILDCARD_SSID,
		      P2P_WILDCARD_SSID_LEN) == 0) {
		/* Process P2P Wildcard SSID like Wildcard SSID */
		elems.ssid_len = 0;
	}
#endif /* CONFIG_P2P */

	if (elems.ssid_len == 0 ||
	    (elems.ssid_len == hapd->conf->ssid.ssid_len &&
	     os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) ==
	     0)) {
		ssid = hapd->conf->ssid.ssid;
		ssid_len = hapd->conf->ssid.ssid_len;
		if (sta)
			sta->ssid_probe = &hapd->conf->ssid;
	}

	if (!ssid) {
		if (!(mgmt->da[0] & 0x01)) {
			char ssid_txt[33];
			ieee802_11_print_ssid(ssid_txt, elems.ssid,
					      elems.ssid_len);
			wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR
				   " for foreign SSID '%s' (DA " MACSTR ")",
				   MAC2STR(mgmt->sa), ssid_txt,
				   MAC2STR(mgmt->da));
		}
		return;
	}

#ifdef CONFIG_INTERWORKING
	if (elems.interworking && elems.interworking_len >= 1) {
		u8 ant = elems.interworking[0] & 0x0f;
		if (ant != INTERWORKING_ANT_WILDCARD &&
		    ant != hapd->conf->access_network_type) {
			wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR
				   " for mismatching ANT %u ignored",
				   MAC2STR(mgmt->sa), ant);
			return;
		}
	}

	if (elems.interworking &&
	    (elems.interworking_len == 7 || elems.interworking_len == 9)) {
		const u8 *hessid;
		if (elems.interworking_len == 7)
			hessid = elems.interworking + 1;
		else
			hessid = elems.interworking + 1 + 2;
		if (!is_broadcast_ether_addr(hessid) &&
		    os_memcmp(hessid, hapd->conf->hessid, ETH_ALEN) != 0) {
			wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR
				   " for mismatching HESSID " MACSTR
				   " ignored",
				   MAC2STR(mgmt->sa), MAC2STR(hessid));
			return;
		}
	}
#endif /* CONFIG_INTERWORKING */

	/* TODO: verify that supp_rates contains at least one matching rate
	 * with AP configuration */
#define MAX_PROBERESP_LEN 768
	buflen = MAX_PROBERESP_LEN;
#ifdef CONFIG_WPS
	if (hapd->wps_probe_resp_ie)
		buflen += wpabuf_len(hapd->wps_probe_resp_ie);
#endif /* CONFIG_WPS */
#ifdef CONFIG_P2P
	if (hapd->p2p_probe_resp_ie)
		buflen += wpabuf_len(hapd->p2p_probe_resp_ie);
#endif /* CONFIG_P2P */
	resp = os_zalloc(buflen);
	if (resp == NULL)
		return;
	epos = ((u8 *) resp) + MAX_PROBERESP_LEN;

	resp->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
					   WLAN_FC_STYPE_PROBE_RESP);
	os_memcpy(resp->da, mgmt->sa, ETH_ALEN);
	os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN);

	os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN);
	resp->u.probe_resp.beacon_int =
		host_to_le16(hapd->iconf->beacon_int);

	/* hardware or low-level driver will setup seq_ctrl and timestamp */
	resp->u.probe_resp.capab_info =
		host_to_le16(hostapd_own_capab_info(hapd, sta, 1));

	pos = resp->u.probe_resp.variable;
	*pos++ = WLAN_EID_SSID;
	*pos++ = ssid_len;
	os_memcpy(pos, ssid, ssid_len);
	pos += ssid_len;

	/* Supported rates */
	pos = hostapd_eid_supp_rates(hapd, pos);

	/* DS Params */
	pos = hostapd_eid_ds_params(hapd, pos);

	pos = hostapd_eid_country(hapd, pos, epos - pos);

	/* ERP Information element */
	pos = hostapd_eid_erp_info(hapd, pos);

	/* Extended supported rates */
	pos = hostapd_eid_ext_supp_rates(hapd, pos);

	/* RSN, MDIE, WPA */
	pos = hostapd_eid_wpa(hapd, pos, epos - pos);

#ifdef CONFIG_IEEE80211N
	pos = hostapd_eid_ht_capabilities(hapd, pos);
	pos = hostapd_eid_ht_operation(hapd, pos);
#endif /* CONFIG_IEEE80211N */

	pos = hostapd_eid_ext_capab(hapd, pos);

	pos = hostapd_eid_time_adv(hapd, pos);
	pos = hostapd_eid_time_zone(hapd, pos);

	pos = hostapd_eid_interworking(hapd, pos);
	pos = hostapd_eid_adv_proto(hapd, pos);
	pos = hostapd_eid_roaming_consortium(hapd, pos);

	/* Wi-Fi Alliance WMM */
	pos = hostapd_eid_wmm(hapd, pos);

#ifdef CONFIG_WPS
	if (hapd->conf->wps_state && hapd->wps_probe_resp_ie) {
		os_memcpy(pos, wpabuf_head(hapd->wps_probe_resp_ie),
			  wpabuf_len(hapd->wps_probe_resp_ie));
		pos += wpabuf_len(hapd->wps_probe_resp_ie);
	}
#endif /* CONFIG_WPS */

#ifdef CONFIG_P2P
	if ((hapd->conf->p2p & P2P_ENABLED) && elems.p2p &&
	    hapd->p2p_probe_resp_ie) {
		os_memcpy(pos, wpabuf_head(hapd->p2p_probe_resp_ie),
			  wpabuf_len(hapd->p2p_probe_resp_ie));
		pos += wpabuf_len(hapd->p2p_probe_resp_ie);
	}
#endif /* CONFIG_P2P */
#ifdef CONFIG_P2P_MANAGER
	if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) ==
	    P2P_MANAGE)
		pos = hostapd_eid_p2p_manage(hapd, pos);
#endif /* CONFIG_P2P_MANAGER */

#ifdef CONFIG_HS20
	pos = hostapd_eid_hs20_indication(hapd, pos);
#endif /* CONFIG_HS20 */

	/*
	 * If this is a broadcast probe request, apply no ack policy to avoid
	 * excessive retries.
	 */
	noack = !!(elems.ssid_len == 0 && is_broadcast_ether_addr(mgmt->da));

	if (hostapd_drv_send_mlme(hapd, resp, pos - (u8 *) resp, noack) < 0)
		perror("handle_probe_req: send");

	os_free(resp);

	wpa_printf(MSG_EXCESSIVE, "STA " MACSTR " sent probe request for %s "
		   "SSID", MAC2STR(mgmt->sa),
		   elems.ssid_len == 0 ? "broadcast" : "our");
}
Пример #7
0
int hostapd_build_ap_extra_ies(struct hostapd_data *hapd,
			       struct wpabuf **beacon_ret,
			       struct wpabuf **proberesp_ret,
			       struct wpabuf **assocresp_ret)
{
	struct wpabuf *beacon = NULL, *proberesp = NULL, *assocresp = NULL;
	u8 buf[200], *pos;

	*beacon_ret = *proberesp_ret = *assocresp_ret = NULL;

	pos = buf;
	pos = hostapd_eid_time_adv(hapd, pos);
	if (add_buf_data(&beacon, buf, pos - buf) < 0)
		goto fail;
	pos = hostapd_eid_time_zone(hapd, pos);
	if (add_buf_data(&proberesp, buf, pos - buf) < 0)
		goto fail;

	pos = buf;
	pos = hostapd_eid_ext_capab(hapd, pos);
	if (add_buf_data(&assocresp, buf, pos - buf) < 0)
		goto fail;
	pos = hostapd_eid_interworking(hapd, pos);
	pos = hostapd_eid_adv_proto(hapd, pos);
	pos = hostapd_eid_roaming_consortium(hapd, pos);
	if (add_buf_data(&beacon, buf, pos - buf) < 0 ||
	    add_buf_data(&proberesp, buf, pos - buf) < 0)
		goto fail;

#ifdef CONFIG_FST
	if (add_buf(&beacon, hapd->iface->fst_ies) < 0 ||
	    add_buf(&proberesp, hapd->iface->fst_ies) < 0 ||
	    add_buf(&assocresp, hapd->iface->fst_ies) < 0)
		goto fail;
#endif /* CONFIG_FST */

#ifdef CONFIG_FILS
	pos = hostapd_eid_fils_indic(hapd, buf, 0);
	if (add_buf_data(&beacon, buf, pos - buf) < 0 ||
	    add_buf_data(&proberesp, buf, pos - buf) < 0)
		goto fail;
#endif /* CONFIG_FILS */

	if (add_buf(&beacon, hapd->wps_beacon_ie) < 0 ||
	    add_buf(&proberesp, hapd->wps_probe_resp_ie) < 0)
		goto fail;

#ifdef CONFIG_P2P
	if (add_buf(&beacon, hapd->p2p_beacon_ie) < 0 ||
	    add_buf(&proberesp, hapd->p2p_probe_resp_ie) < 0)
		goto fail;
#endif /* CONFIG_P2P */

#ifdef CONFIG_P2P_MANAGER
	if (hapd->conf->p2p & P2P_MANAGE) {
		if (wpabuf_resize(&beacon, 100) == 0) {
			u8 *start, *p;
			start = wpabuf_put(beacon, 0);
			p = hostapd_eid_p2p_manage(hapd, start);
			wpabuf_put(beacon, p - start);
		}

		if (wpabuf_resize(&proberesp, 100) == 0) {
			u8 *start, *p;
			start = wpabuf_put(proberesp, 0);
			p = hostapd_eid_p2p_manage(hapd, start);
			wpabuf_put(proberesp, p - start);
		}
	}
#endif /* CONFIG_P2P_MANAGER */

#ifdef CONFIG_WPS
	if (hapd->conf->wps_state) {
		struct wpabuf *a = wps_build_assoc_resp_ie();
		add_buf(&assocresp, a);
		wpabuf_free(a);
	}
#endif /* CONFIG_WPS */

#ifdef CONFIG_P2P_MANAGER
	if (hapd->conf->p2p & P2P_MANAGE) {
		if (wpabuf_resize(&assocresp, 100) == 0) {
			u8 *start, *p;
			start = wpabuf_put(assocresp, 0);
			p = hostapd_eid_p2p_manage(hapd, start);
			wpabuf_put(assocresp, p - start);
		}
	}
#endif /* CONFIG_P2P_MANAGER */

#ifdef CONFIG_WIFI_DISPLAY
	if (hapd->p2p_group) {
		struct wpabuf *a;
		a = p2p_group_assoc_resp_ie(hapd->p2p_group, P2P_SC_SUCCESS);
		add_buf(&assocresp, a);
		wpabuf_free(a);
	}
#endif /* CONFIG_WIFI_DISPLAY */

#ifdef CONFIG_HS20
	pos = hostapd_eid_hs20_indication(hapd, buf);
	if (add_buf_data(&beacon, buf, pos - buf) < 0 ||
	    add_buf_data(&proberesp, buf, pos - buf) < 0)
		goto fail;

	pos = hostapd_eid_osen(hapd, buf);
	if (add_buf_data(&beacon, buf, pos - buf) < 0 ||
	    add_buf_data(&proberesp, buf, pos - buf) < 0)
		goto fail;
#endif /* CONFIG_HS20 */

#ifdef CONFIG_MBO
	if (hapd->conf->mbo_enabled || hapd->enable_oce) {
		pos = hostapd_eid_mbo(hapd, buf, sizeof(buf));
		if (add_buf_data(&beacon, buf, pos - buf) < 0 ||
		    add_buf_data(&proberesp, buf, pos - buf) < 0 ||
		    add_buf_data(&assocresp, buf, pos - buf) < 0)
			goto fail;
	}
#endif /* CONFIG_MBO */

	add_buf(&beacon, hapd->conf->vendor_elements);
	add_buf(&proberesp, hapd->conf->vendor_elements);
	add_buf(&assocresp, hapd->conf->assocresp_elements);

	*beacon_ret = beacon;
	*proberesp_ret = proberesp;
	*assocresp_ret = assocresp;

	return 0;

fail:
	wpabuf_free(beacon);
	wpabuf_free(proberesp);
	wpabuf_free(assocresp);
	return -1;
}
Пример #8
0
static u8 * hostapd_gen_probe_resp(struct hostapd_data *hapd,
				   struct sta_info *sta, const u8 *ssid, size_t ssid_len,
				   const struct ieee80211_mgmt *req,
				   int is_p2p, size_t *resp_len)
{
	struct ieee80211_mgmt *resp;
	u8 *pos, *epos;
	size_t buflen;

#define MAX_PROBERESP_LEN 768
	buflen = MAX_PROBERESP_LEN;
#ifdef CONFIG_WPS
	if (hapd->wps_probe_resp_ie)
		buflen += wpabuf_len(hapd->wps_probe_resp_ie);
#endif /* CONFIG_WPS */
#ifdef CONFIG_P2P
	if (hapd->p2p_probe_resp_ie)
		buflen += wpabuf_len(hapd->p2p_probe_resp_ie);
#endif /* CONFIG_P2P */
	if (hapd->conf->vendor_elements)
		buflen += wpabuf_len(hapd->conf->vendor_elements);
	resp = os_zalloc(buflen);
	if (resp == NULL)
		return NULL;

	epos = ((u8 *) resp) + MAX_PROBERESP_LEN;

	resp->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
					   WLAN_FC_STYPE_PROBE_RESP);

	//MANA - check against macacl
	if (req && hapd->iconf->mana_macacl) {
		int match;
		if (hapd->iconf->bss[0]->macaddr_acl == DENY_UNLESS_ACCEPTED) {
			match = hostapd_maclist_found(hapd->conf->accept_mac, hapd->conf->num_accept_mac, req->sa, NULL);
			if (!match) {
				wpa_printf(MSG_DEBUG, "MANA: Station MAC is not authorised by accept ACL: " MACSTR, MAC2STR(req->sa));
				return NULL; //MAC is not in accept list, back out and don't send
			}
		} else if (hapd->iconf->bss[0]->macaddr_acl == ACCEPT_UNLESS_DENIED) {
			if (hostapd_maclist_found(hapd->conf->deny_mac, hapd->conf->num_deny_mac, req->sa, NULL)) {
				wpa_printf(MSG_DEBUG, "MANA: Station MAC is not authorised by deny ACL: " MACSTR, MAC2STR(req->sa));
				return NULL; //MAC is in deny list, back out and don't send
			}
		}
		wpa_printf(MSG_INFO, "MANA: Station MAC is authorised by ACL: " MACSTR, MAC2STR(req->sa));
	}
    //MANA END
	if (req)
		os_memcpy(resp->da, req->sa, ETH_ALEN);
	os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN);

	os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN);
	resp->u.probe_resp.beacon_int =
		host_to_le16(hapd->iconf->beacon_int);

	/* hardware or low-level driver will setup seq_ctrl and timestamp */
	resp->u.probe_resp.capab_info =
		host_to_le16(hostapd_own_capab_info(hapd, sta, 1)); // MANA - FOLLOW

	pos = resp->u.probe_resp.variable;
	*pos++ = WLAN_EID_SSID;
	// MANA START
	if (hapd->iconf->enable_mana && ssid_len > 0) {
		*pos++ = ssid_len;
		os_memcpy(pos, ssid, ssid_len);
		pos += ssid_len;
	} else {
		*pos++ = hapd->conf->ssid.ssid_len;
		os_memcpy(pos, hapd->conf->ssid.ssid, hapd->conf->ssid.ssid_len);
		pos += hapd->conf->ssid.ssid_len;
	}
	// MANA END

	/* Supported rates */
	pos = hostapd_eid_supp_rates(hapd, pos);

	/* DS Params */
	pos = hostapd_eid_ds_params(hapd, pos);

	pos = hostapd_eid_country(hapd, pos, epos - pos);

	/* Power Constraint element */
	pos = hostapd_eid_pwr_constraint(hapd, pos);

	/* ERP Information element */
	pos = hostapd_eid_erp_info(hapd, pos);

	/* Extended supported rates */
	pos = hostapd_eid_ext_supp_rates(hapd, pos);

	/* RSN, MDIE, WPA */
	pos = hostapd_eid_wpa(hapd, pos, epos - pos);

	pos = hostapd_eid_bss_load(hapd, pos, epos - pos);

#ifdef CONFIG_IEEE80211N
	pos = hostapd_eid_ht_capabilities(hapd, pos);
	pos = hostapd_eid_ht_operation(hapd, pos);
#endif /* CONFIG_IEEE80211N */

	pos = hostapd_eid_ext_capab(hapd, pos);

	pos = hostapd_eid_time_adv(hapd, pos);
	pos = hostapd_eid_time_zone(hapd, pos);

	pos = hostapd_eid_interworking(hapd, pos);
	pos = hostapd_eid_adv_proto(hapd, pos);
	pos = hostapd_eid_roaming_consortium(hapd, pos);

	pos = hostapd_add_csa_elems(hapd, pos, (u8 *)resp,
				    &hapd->cs_c_off_proberesp);
#ifdef CONFIG_IEEE80211AC
	pos = hostapd_eid_vht_capabilities(hapd, pos);
	pos = hostapd_eid_vht_operation(hapd, pos);
#endif /* CONFIG_IEEE80211AC */

	/* Wi-Fi Alliance WMM */
	pos = hostapd_eid_wmm(hapd, pos);

#ifdef CONFIG_WPS
	if (hapd->conf->wps_state && hapd->wps_probe_resp_ie) {
		os_memcpy(pos, wpabuf_head(hapd->wps_probe_resp_ie),
			  wpabuf_len(hapd->wps_probe_resp_ie));
		pos += wpabuf_len(hapd->wps_probe_resp_ie);
	}
#endif /* CONFIG_WPS */

#ifdef CONFIG_P2P
	if ((hapd->conf->p2p & P2P_ENABLED) && is_p2p &&
	    hapd->p2p_probe_resp_ie) {
		os_memcpy(pos, wpabuf_head(hapd->p2p_probe_resp_ie),
			  wpabuf_len(hapd->p2p_probe_resp_ie));
		pos += wpabuf_len(hapd->p2p_probe_resp_ie);
	}
#endif /* CONFIG_P2P */
#ifdef CONFIG_P2P_MANAGER
	if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) ==
	    P2P_MANAGE)
		pos = hostapd_eid_p2p_manage(hapd, pos);
#endif /* CONFIG_P2P_MANAGER */

#ifdef CONFIG_HS20
	pos = hostapd_eid_hs20_indication(hapd, pos);
	pos = hostapd_eid_osen(hapd, pos);
#endif /* CONFIG_HS20 */

	if (hapd->conf->vendor_elements) {
		os_memcpy(pos, wpabuf_head(hapd->conf->vendor_elements),
			  wpabuf_len(hapd->conf->vendor_elements));
		pos += wpabuf_len(hapd->conf->vendor_elements);
	}

	*resp_len = pos - (u8 *) resp;
	return (u8 *) resp;
}