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;
}
예제 #2
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;
}
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;
}
예제 #4
0
static void send_assoc_resp(struct hostapd_data *hapd, struct sta_info *sta,
			    u16 status_code, int reassoc, const u8 *ies,
			    size_t ies_len)
{
	int send_len;
	u8 buf[sizeof(struct ieee80211_mgmt) + 1024];
	struct ieee80211_mgmt *reply;
	u8 *p;

	os_memset(buf, 0, sizeof(buf));
	reply = (struct ieee80211_mgmt *) buf;
	reply->frame_control =
		IEEE80211_FC(WLAN_FC_TYPE_MGMT,
			     (reassoc ? WLAN_FC_STYPE_REASSOC_RESP :
			      WLAN_FC_STYPE_ASSOC_RESP));
	os_memcpy(reply->da, sta->addr, ETH_ALEN);
	os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
	os_memcpy(reply->bssid, hapd->own_addr, ETH_ALEN);

	send_len = IEEE80211_HDRLEN;
	send_len += sizeof(reply->u.assoc_resp);
	reply->u.assoc_resp.capab_info =
		host_to_le16(hostapd_own_capab_info(hapd, sta, 0));
	reply->u.assoc_resp.status_code = host_to_le16(status_code);
	reply->u.assoc_resp.aid = host_to_le16((sta ? sta->aid : 0)
					       | BIT(14) | BIT(15));
	/* Supported rates */
	p = hostapd_eid_supp_rates(hapd, reply->u.assoc_resp.variable);
	/* Extended supported rates */
	p = hostapd_eid_ext_supp_rates(hapd, p);

#ifdef CONFIG_IEEE80211R
	if (status_code == WLAN_STATUS_SUCCESS) {
		/* IEEE 802.11r: Mobility Domain Information, Fast BSS
		 * Transition Information, RSN, [RIC Response] */
		p = wpa_sm_write_assoc_resp_ies(sta->wpa_sm, p,
						buf + sizeof(buf) - p,
						sta->auth_alg, ies, ies_len);
	}
#endif /* CONFIG_IEEE80211R */

#ifdef CONFIG_IEEE80211W
	if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY)
		p = hostapd_eid_assoc_comeback_time(hapd, sta, p);
#endif /* CONFIG_IEEE80211W */

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

	if (sta->flags & WLAN_STA_WMM)
		p = hostapd_eid_wmm(hapd, p);

#ifdef CONFIG_WPS
	if (sta->flags & WLAN_STA_WPS) {
		struct wpabuf *wps = wps_build_assoc_resp_ie();
		if (wps) {
			os_memcpy(p, wpabuf_head(wps), wpabuf_len(wps));
			p += wpabuf_len(wps);
			wpabuf_free(wps);
		}
	}
#endif /* CONFIG_WPS */

	send_len += p - reply->u.assoc_resp.variable;

	if (hapd->drv.send_mgmt_frame(hapd, reply, send_len) < 0)
		wpa_printf(MSG_INFO, "Failed to send assoc resp: %s",
			   strerror(errno));
}