Split handle_assoc() into number of helper functions
This commit is contained in:
Jouni Malinen
parent
9294bfefc7
commit
5586f500a0
1 changed files with 446 additions and 337 deletions
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@ -700,18 +700,440 @@ static int hostapd_get_aid(struct hostapd_data *hapd, struct sta_info *sta)
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}
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}
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static u16 check_ssid(struct hostapd_data *hapd, struct sta_info *sta,
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const u8 *ssid_ie, size_t ssid_ie_len)
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{
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if (ssid_ie == NULL)
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return WLAN_STATUS_UNSPECIFIED_FAILURE;
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if (ssid_ie_len != hapd->conf->ssid.ssid_len ||
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os_memcmp(ssid_ie, hapd->conf->ssid.ssid, ssid_ie_len) != 0) {
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char ssid_txt[33];
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ieee802_11_print_ssid(ssid_txt, ssid_ie, ssid_ie_len);
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hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
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HOSTAPD_LEVEL_INFO,
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"Station tried to associate with unknown SSID "
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"'%s'", ssid_txt);
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return WLAN_STATUS_UNSPECIFIED_FAILURE;
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}
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return WLAN_STATUS_SUCCESS;
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}
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static u16 check_wmm(struct hostapd_data *hapd, struct sta_info *sta,
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const u8 *wmm_ie, size_t wmm_ie_len)
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{
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sta->flags &= ~WLAN_STA_WMM;
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if (wmm_ie && hapd->conf->wmm_enabled) {
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if (hostapd_eid_wmm_valid(hapd, wmm_ie, wmm_ie_len))
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hostapd_logger(hapd, sta->addr,
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HOSTAPD_MODULE_WPA,
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HOSTAPD_LEVEL_DEBUG,
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"invalid WMM element in association "
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"request");
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else
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sta->flags |= WLAN_STA_WMM;
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}
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return WLAN_STATUS_SUCCESS;
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}
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static u16 copy_supp_rates(struct hostapd_data *hapd, struct sta_info *sta,
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struct ieee802_11_elems *elems)
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{
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if (!elems->supp_rates) {
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hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
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HOSTAPD_LEVEL_DEBUG,
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"No supported rates element in AssocReq");
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return WLAN_STATUS_UNSPECIFIED_FAILURE;
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}
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if (elems->supp_rates_len > sizeof(sta->supported_rates)) {
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hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
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HOSTAPD_LEVEL_DEBUG,
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"Invalid supported rates element length %d",
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elems->supp_rates_len);
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return WLAN_STATUS_UNSPECIFIED_FAILURE;
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}
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os_memset(sta->supported_rates, 0, sizeof(sta->supported_rates));
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os_memcpy(sta->supported_rates, elems->supp_rates,
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elems->supp_rates_len);
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sta->supported_rates_len = elems->supp_rates_len;
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if (elems->ext_supp_rates) {
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if (elems->supp_rates_len + elems->ext_supp_rates_len >
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sizeof(sta->supported_rates)) {
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hostapd_logger(hapd, sta->addr,
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HOSTAPD_MODULE_IEEE80211,
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HOSTAPD_LEVEL_DEBUG,
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"Invalid supported rates element length"
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" %d+%d", elems->supp_rates_len,
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elems->ext_supp_rates_len);
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return WLAN_STATUS_UNSPECIFIED_FAILURE;
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}
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os_memcpy(sta->supported_rates + elems->supp_rates_len,
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elems->ext_supp_rates, elems->ext_supp_rates_len);
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sta->supported_rates_len += elems->ext_supp_rates_len;
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}
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return WLAN_STATUS_SUCCESS;
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}
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#ifdef CONFIG_IEEE80211N
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static u16 copy_sta_ht_capab(struct sta_info *sta, const u8 *ht_capab,
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size_t ht_capab_len)
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{
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if (!ht_capab ||
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ht_capab_len < sizeof(struct ieee80211_ht_capabilities)) {
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sta->flags &= ~WLAN_STA_HT;
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os_free(sta->ht_capabilities);
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sta->ht_capabilities = NULL;
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return WLAN_STATUS_SUCCESS;
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}
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if (sta->ht_capabilities == NULL) {
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sta->ht_capabilities =
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os_zalloc(sizeof(struct ieee80211_ht_capabilities));
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if (sta->ht_capabilities == NULL)
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return WLAN_STATUS_UNSPECIFIED_FAILURE;
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}
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sta->flags |= WLAN_STA_HT;
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os_memcpy(sta->ht_capabilities, ht_capab,
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sizeof(struct ieee80211_ht_capabilities));
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return WLAN_STATUS_SUCCESS;
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}
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static void update_sta_ht(struct hostapd_data *hapd, struct sta_info *sta)
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{
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u16 ht_capab;
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ht_capab = le_to_host16(sta->ht_capabilities->ht_capabilities_info);
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wpa_printf(MSG_DEBUG, "HT: STA " MACSTR " HT Capabilities Info: "
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"0x%04x", MAC2STR(sta->addr), ht_capab);
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if ((ht_capab & HT_CAP_INFO_GREEN_FIELD) == 0) {
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if (!sta->no_ht_gf_set) {
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sta->no_ht_gf_set = 1;
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hapd->iface->num_sta_ht_no_gf++;
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}
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wpa_printf(MSG_DEBUG, "%s STA " MACSTR " - no greenfield, num "
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"of non-gf stations %d",
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__func__, MAC2STR(sta->addr),
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hapd->iface->num_sta_ht_no_gf);
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}
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if ((ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET) == 0) {
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if (!sta->ht_20mhz_set) {
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sta->ht_20mhz_set = 1;
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hapd->iface->num_sta_ht_20mhz++;
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}
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wpa_printf(MSG_DEBUG, "%s STA " MACSTR " - 20 MHz HT, num of "
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"20MHz HT STAs %d",
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__func__, MAC2STR(sta->addr),
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hapd->iface->num_sta_ht_20mhz);
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}
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}
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static void update_sta_no_ht(struct hostapd_data *hapd, struct sta_info *sta)
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{
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if (!sta->no_ht_set) {
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sta->no_ht_set = 1;
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hapd->iface->num_sta_no_ht++;
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}
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if (hapd->iconf->ieee80211n) {
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wpa_printf(MSG_DEBUG, "%s STA " MACSTR " - no HT, num of "
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"non-HT stations %d",
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__func__, MAC2STR(sta->addr),
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hapd->iface->num_sta_no_ht);
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}
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}
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static void update_ht_state(struct hostapd_data *hapd, struct sta_info *sta)
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{
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if ((sta->flags & WLAN_STA_HT) && sta->ht_capabilities)
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update_sta_ht(hapd, sta);
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else
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update_sta_no_ht(hapd, sta);
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if (hostapd_ht_operation_update(hapd->iface) > 0)
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ieee802_11_set_beacons(hapd->iface);
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}
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#else /* CONFIG_IEEE80211N */
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static u16 copy_sta_ht_capab(struct sta_info *sta, const u8 *ht_capab,
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size_t ht_capab_len)
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{
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return WLAN_STATUS_SUCCESS;
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}
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static void update_ht_state(struct hostapd_data *hapd, struct sta_info *sta)
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{
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}
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#endif /* CONFIG_IEEE80211N */
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static u16 check_assoc_ies(struct hostapd_data *hapd, struct sta_info *sta,
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u8 *ies, size_t ies_len, int reassoc)
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{
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struct ieee802_11_elems elems;
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u16 resp;
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u8 *wpa_ie;
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size_t wpa_ie_len;
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if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed) {
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hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
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HOSTAPD_LEVEL_INFO, "Station sent an invalid "
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"association request");
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return WLAN_STATUS_UNSPECIFIED_FAILURE;
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}
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resp = check_ssid(hapd, sta, elems.ssid, elems.ssid_len);
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if (resp != WLAN_STATUS_SUCCESS)
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return resp;
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resp = check_wmm(hapd, sta, elems.wmm, elems.wmm_len);
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if (resp != WLAN_STATUS_SUCCESS)
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return resp;
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resp = copy_supp_rates(hapd, sta, &elems);
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if (resp != WLAN_STATUS_SUCCESS)
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return resp;
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resp = copy_sta_ht_capab(sta, elems.ht_capabilities,
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elems.ht_capabilities_len);
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if (resp != WLAN_STATUS_SUCCESS)
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return resp;
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if ((hapd->conf->wpa & WPA_PROTO_RSN) && elems.rsn_ie) {
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wpa_ie = elems.rsn_ie;
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wpa_ie_len = elems.rsn_ie_len;
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} else if ((hapd->conf->wpa & WPA_PROTO_WPA) &&
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elems.wpa_ie) {
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wpa_ie = elems.wpa_ie;
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wpa_ie_len = elems.wpa_ie_len;
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} else {
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wpa_ie = NULL;
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wpa_ie_len = 0;
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}
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#ifdef CONFIG_WPS
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sta->flags &= ~(WLAN_STA_WPS | WLAN_STA_MAYBE_WPS);
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if (hapd->conf->wps_state && wpa_ie == NULL) {
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if (elems.wps_ie) {
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wpa_printf(MSG_DEBUG, "STA included WPS IE in "
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"(Re)Association Request - assume WPS is "
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"used");
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sta->flags |= WLAN_STA_WPS;
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wpabuf_free(sta->wps_ie);
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sta->wps_ie = wpabuf_alloc_copy(elems.wps_ie + 4,
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elems.wps_ie_len - 4);
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} else {
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wpa_printf(MSG_DEBUG, "STA did not include WPA/RSN IE "
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"in (Re)Association Request - possible WPS "
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"use");
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sta->flags |= WLAN_STA_MAYBE_WPS;
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}
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} else
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#endif /* CONFIG_WPS */
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if (hapd->conf->wpa && wpa_ie == NULL) {
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hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
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HOSTAPD_LEVEL_INFO,
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"No WPA/RSN IE in association request");
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return WLAN_STATUS_INVALID_IE;
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}
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if (hapd->conf->wpa && wpa_ie) {
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int res;
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wpa_ie -= 2;
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wpa_ie_len += 2;
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if (sta->wpa_sm == NULL)
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sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
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sta->addr);
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if (sta->wpa_sm == NULL) {
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wpa_printf(MSG_WARNING, "Failed to initialize WPA "
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"state machine");
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return WLAN_STATUS_UNSPECIFIED_FAILURE;
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}
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res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
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wpa_ie, wpa_ie_len,
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elems.mdie, elems.mdie_len);
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if (res == WPA_INVALID_GROUP)
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resp = WLAN_STATUS_GROUP_CIPHER_NOT_VALID;
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else if (res == WPA_INVALID_PAIRWISE)
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resp = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID;
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else if (res == WPA_INVALID_AKMP)
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resp = WLAN_STATUS_AKMP_NOT_VALID;
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else if (res == WPA_ALLOC_FAIL)
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resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
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#ifdef CONFIG_IEEE80211W
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else if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION)
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resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
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else if (res == WPA_INVALID_MGMT_GROUP_CIPHER)
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resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
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#endif /* CONFIG_IEEE80211W */
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else if (res == WPA_INVALID_MDIE)
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resp = WLAN_STATUS_INVALID_MDIE;
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else if (res != WPA_IE_OK)
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resp = WLAN_STATUS_INVALID_IE;
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if (resp != WLAN_STATUS_SUCCESS)
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return resp;
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#ifdef CONFIG_IEEE80211W
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if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
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sta->sa_query_count > 0)
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ap_check_sa_query_timeout(hapd, sta);
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if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
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(!reassoc || sta->auth_alg != WLAN_AUTH_FT)) {
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/*
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* STA has already been associated with MFP and SA
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* Query timeout has not been reached. Reject the
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* association attempt temporarily and start SA Query,
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* if one is not pending.
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*/
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if (sta->sa_query_count == 0)
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ap_sta_start_sa_query(hapd, sta);
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return WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY;
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}
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if (wpa_auth_uses_mfp(sta->wpa_sm))
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sta->flags |= WLAN_STA_MFP;
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else
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sta->flags &= ~WLAN_STA_MFP;
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#endif /* CONFIG_IEEE80211W */
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#ifdef CONFIG_IEEE80211R
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if (sta->auth_alg == WLAN_AUTH_FT) {
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if (!reassoc) {
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wpa_printf(MSG_DEBUG, "FT: " MACSTR " tried "
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"to use association (not "
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"re-association) with FT auth_alg",
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MAC2STR(sta->addr));
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return WLAN_STATUS_UNSPECIFIED_FAILURE;
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}
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resp = wpa_ft_validate_reassoc(sta->wpa_sm, ies,
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ies_len);
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if (resp != WLAN_STATUS_SUCCESS)
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return resp;
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}
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#endif /* CONFIG_IEEE80211R */
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#ifdef CONFIG_IEEE80211N
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if ((sta->flags & WLAN_STA_HT) &&
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wpa_auth_get_pairwise(sta->wpa_sm) == WPA_CIPHER_TKIP) {
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hostapd_logger(hapd, sta->addr,
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HOSTAPD_MODULE_IEEE80211,
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HOSTAPD_LEVEL_INFO,
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"Station tried to use TKIP with HT "
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"association");
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return WLAN_STATUS_CIPHER_REJECTED_PER_POLICY;
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}
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#endif /* CONFIG_IEEE80211N */
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} else
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wpa_auth_sta_no_wpa(sta->wpa_sm);
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return WLAN_STATUS_SUCCESS;
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}
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static void send_deauth(struct hostapd_data *hapd, const u8 *addr,
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u16 reason_code)
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{
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||||||
|
int send_len;
|
||||||
|
struct ieee80211_mgmt reply;
|
||||||
|
|
||||||
|
os_memset(&reply, 0, sizeof(reply));
|
||||||
|
reply.frame_control =
|
||||||
|
IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_DEAUTH);
|
||||||
|
os_memcpy(reply.da, 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 + sizeof(reply.u.deauth);
|
||||||
|
reply.u.deauth.reason_code = host_to_le16(reason_code);
|
||||||
|
|
||||||
|
if (hostapd_send_mgmt_frame(hapd, &reply, send_len) < 0)
|
||||||
|
wpa_printf(MSG_INFO, "Failed to send deauth: %s",
|
||||||
|
strerror(errno));
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
static void send_assoc_resp(struct hostapd_data *hapd, struct sta_info *sta,
|
||||||
|
u16 status_code, int reassoc, 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);
|
||||||
|
if (sta->flags & WLAN_STA_WMM)
|
||||||
|
p = hostapd_eid_wmm(hapd, p);
|
||||||
|
|
||||||
|
p = hostapd_eid_ht_capabilities(hapd, p);
|
||||||
|
p = hostapd_eid_ht_operation(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 */
|
||||||
|
|
||||||
|
send_len += p - reply->u.assoc_resp.variable;
|
||||||
|
|
||||||
|
if (hostapd_send_mgmt_frame(hapd, reply, send_len) < 0)
|
||||||
|
wpa_printf(MSG_INFO, "Failed to send assoc resp: %s",
|
||||||
|
strerror(errno));
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
static void handle_assoc(struct hostapd_data *hapd,
|
static void handle_assoc(struct hostapd_data *hapd,
|
||||||
struct ieee80211_mgmt *mgmt, size_t len, int reassoc)
|
struct ieee80211_mgmt *mgmt, size_t len, int reassoc)
|
||||||
{
|
{
|
||||||
u16 capab_info, listen_interval;
|
u16 capab_info, listen_interval;
|
||||||
u16 resp = WLAN_STATUS_SUCCESS;
|
u16 resp = WLAN_STATUS_SUCCESS;
|
||||||
u8 *pos, *wpa_ie;
|
u8 *pos;
|
||||||
size_t wpa_ie_len;
|
int left, i;
|
||||||
int send_deauth = 0, send_len, left, i;
|
|
||||||
struct sta_info *sta;
|
struct sta_info *sta;
|
||||||
struct ieee802_11_elems elems;
|
|
||||||
u8 buf[sizeof(struct ieee80211_mgmt) + 1024];
|
|
||||||
struct ieee80211_mgmt *reply;
|
|
||||||
|
|
||||||
if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_req) :
|
if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_req) :
|
||||||
sizeof(mgmt->u.assoc_req))) {
|
sizeof(mgmt->u.assoc_req))) {
|
||||||
|
|
@ -752,15 +1174,15 @@ static void handle_assoc(struct hostapd_data *hapd,
|
||||||
} else
|
} else
|
||||||
#endif /* CONFIG_IEEE80211R */
|
#endif /* CONFIG_IEEE80211R */
|
||||||
if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) {
|
if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) {
|
||||||
printf("STA " MACSTR " trying to associate before "
|
hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
|
||||||
"authentication\n", MAC2STR(mgmt->sa));
|
HOSTAPD_LEVEL_INFO, "Station tried to "
|
||||||
if (sta) {
|
"associate before authentication "
|
||||||
printf(" sta: addr=" MACSTR " aid=%d flags=0x%04x\n",
|
"(aid=%d flags=0x%x)",
|
||||||
MAC2STR(sta->addr), sta->aid, sta->flags);
|
sta ? sta->aid : -1,
|
||||||
}
|
sta ? sta->flags : 0);
|
||||||
send_deauth = 1;
|
send_deauth(hapd, mgmt->sa,
|
||||||
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA);
|
||||||
goto fail;
|
return;
|
||||||
}
|
}
|
||||||
|
|
||||||
if (hapd->tkip_countermeasures) {
|
if (hapd->tkip_countermeasures) {
|
||||||
|
|
@ -777,234 +1199,21 @@ static void handle_assoc(struct hostapd_data *hapd,
|
||||||
goto fail;
|
goto fail;
|
||||||
}
|
}
|
||||||
|
|
||||||
sta->capability = capab_info;
|
|
||||||
sta->listen_interval = listen_interval;
|
|
||||||
|
|
||||||
/* followed by SSID and Supported rates; and HT capabilities if 802.11n
|
/* followed by SSID and Supported rates; and HT capabilities if 802.11n
|
||||||
* is used */
|
* is used */
|
||||||
if (ieee802_11_parse_elems(pos, left, &elems, 1) == ParseFailed ||
|
resp = check_assoc_ies(hapd, sta, pos, left, reassoc);
|
||||||
!elems.ssid) {
|
|
||||||
printf("STA " MACSTR " sent invalid association request\n",
|
|
||||||
MAC2STR(sta->addr));
|
|
||||||
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
||||||
goto fail;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (elems.ssid_len != hapd->conf->ssid.ssid_len ||
|
|
||||||
os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) != 0)
|
|
||||||
{
|
|
||||||
char ssid_txt[33];
|
|
||||||
ieee802_11_print_ssid(ssid_txt, elems.ssid, elems.ssid_len);
|
|
||||||
printf("Station " MACSTR " tried to associate with "
|
|
||||||
"unknown SSID '%s'\n", MAC2STR(sta->addr), ssid_txt);
|
|
||||||
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
||||||
goto fail;
|
|
||||||
}
|
|
||||||
|
|
||||||
sta->flags &= ~WLAN_STA_WMM;
|
|
||||||
if (elems.wmm && hapd->conf->wmm_enabled) {
|
|
||||||
if (hostapd_eid_wmm_valid(hapd, elems.wmm, elems.wmm_len))
|
|
||||||
hostapd_logger(hapd, sta->addr,
|
|
||||||
HOSTAPD_MODULE_WPA,
|
|
||||||
HOSTAPD_LEVEL_DEBUG,
|
|
||||||
"invalid WMM element in association "
|
|
||||||
"request");
|
|
||||||
else
|
|
||||||
sta->flags |= WLAN_STA_WMM;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (!elems.supp_rates) {
|
|
||||||
hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
|
|
||||||
HOSTAPD_LEVEL_DEBUG,
|
|
||||||
"No supported rates element in AssocReq");
|
|
||||||
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
||||||
goto fail;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (elems.supp_rates_len > sizeof(sta->supported_rates)) {
|
|
||||||
hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
|
|
||||||
HOSTAPD_LEVEL_DEBUG,
|
|
||||||
"Invalid supported rates element length %d",
|
|
||||||
elems.supp_rates_len);
|
|
||||||
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
||||||
goto fail;
|
|
||||||
}
|
|
||||||
|
|
||||||
os_memset(sta->supported_rates, 0, sizeof(sta->supported_rates));
|
|
||||||
os_memcpy(sta->supported_rates, elems.supp_rates,
|
|
||||||
elems.supp_rates_len);
|
|
||||||
sta->supported_rates_len = elems.supp_rates_len;
|
|
||||||
|
|
||||||
if (elems.ext_supp_rates) {
|
|
||||||
if (elems.supp_rates_len + elems.ext_supp_rates_len >
|
|
||||||
sizeof(sta->supported_rates)) {
|
|
||||||
hostapd_logger(hapd, mgmt->sa,
|
|
||||||
HOSTAPD_MODULE_IEEE80211,
|
|
||||||
HOSTAPD_LEVEL_DEBUG,
|
|
||||||
"Invalid supported rates element length"
|
|
||||||
" %d+%d", elems.supp_rates_len,
|
|
||||||
elems.ext_supp_rates_len);
|
|
||||||
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
||||||
goto fail;
|
|
||||||
}
|
|
||||||
|
|
||||||
os_memcpy(sta->supported_rates + elems.supp_rates_len,
|
|
||||||
elems.ext_supp_rates, elems.ext_supp_rates_len);
|
|
||||||
sta->supported_rates_len += elems.ext_supp_rates_len;
|
|
||||||
}
|
|
||||||
|
|
||||||
#ifdef CONFIG_IEEE80211N
|
|
||||||
/* save HT capabilities in the sta object */
|
|
||||||
if (elems.ht_capabilities &&
|
|
||||||
elems.ht_capabilities_len >=
|
|
||||||
sizeof(struct ieee80211_ht_capabilities)) {
|
|
||||||
if (sta->ht_capabilities) {
|
|
||||||
os_memset(sta->ht_capabilities, 0,
|
|
||||||
sizeof(*sta->ht_capabilities));
|
|
||||||
} else {
|
|
||||||
sta->ht_capabilities =
|
|
||||||
os_zalloc(sizeof(*sta->ht_capabilities));
|
|
||||||
if (sta->ht_capabilities == NULL) {
|
|
||||||
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
||||||
goto fail;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
sta->flags |= WLAN_STA_HT;
|
|
||||||
os_memcpy(sta->ht_capabilities, elems.ht_capabilities,
|
|
||||||
sizeof(struct ieee80211_ht_capabilities));
|
|
||||||
} else {
|
|
||||||
sta->flags &= ~WLAN_STA_HT;
|
|
||||||
os_free(sta->ht_capabilities);
|
|
||||||
sta->ht_capabilities = NULL;
|
|
||||||
}
|
|
||||||
#endif /* CONFIG_IEEE80211N */
|
|
||||||
|
|
||||||
if ((hapd->conf->wpa & WPA_PROTO_RSN) && elems.rsn_ie) {
|
|
||||||
wpa_ie = elems.rsn_ie;
|
|
||||||
wpa_ie_len = elems.rsn_ie_len;
|
|
||||||
} else if ((hapd->conf->wpa & WPA_PROTO_WPA) &&
|
|
||||||
elems.wpa_ie) {
|
|
||||||
wpa_ie = elems.wpa_ie;
|
|
||||||
wpa_ie_len = elems.wpa_ie_len;
|
|
||||||
} else {
|
|
||||||
wpa_ie = NULL;
|
|
||||||
wpa_ie_len = 0;
|
|
||||||
}
|
|
||||||
#ifdef CONFIG_WPS
|
|
||||||
sta->flags &= ~(WLAN_STA_WPS | WLAN_STA_MAYBE_WPS);
|
|
||||||
if (hapd->conf->wps_state && wpa_ie == NULL) {
|
|
||||||
if (elems.wps_ie) {
|
|
||||||
wpa_printf(MSG_DEBUG, "STA included WPS IE in "
|
|
||||||
"(Re)Association Request - assume WPS is "
|
|
||||||
"used");
|
|
||||||
sta->flags |= WLAN_STA_WPS;
|
|
||||||
wpabuf_free(sta->wps_ie);
|
|
||||||
sta->wps_ie = wpabuf_alloc_copy(elems.wps_ie + 4,
|
|
||||||
elems.wps_ie_len - 4);
|
|
||||||
} else {
|
|
||||||
wpa_printf(MSG_DEBUG, "STA did not include WPA/RSN IE "
|
|
||||||
"in (Re)Association Request - possible WPS "
|
|
||||||
"use");
|
|
||||||
sta->flags |= WLAN_STA_MAYBE_WPS;
|
|
||||||
}
|
|
||||||
} else
|
|
||||||
#endif /* CONFIG_WPS */
|
|
||||||
if (hapd->conf->wpa && wpa_ie == NULL) {
|
|
||||||
printf("STA " MACSTR ": No WPA/RSN IE in association "
|
|
||||||
"request\n", MAC2STR(sta->addr));
|
|
||||||
resp = WLAN_STATUS_INVALID_IE;
|
|
||||||
goto fail;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (hapd->conf->wpa && wpa_ie) {
|
|
||||||
int res;
|
|
||||||
wpa_ie -= 2;
|
|
||||||
wpa_ie_len += 2;
|
|
||||||
if (sta->wpa_sm == NULL)
|
|
||||||
sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
|
|
||||||
sta->addr);
|
|
||||||
if (sta->wpa_sm == NULL) {
|
|
||||||
printf("Failed to initialize WPA state machine\n");
|
|
||||||
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
||||||
goto fail;
|
|
||||||
}
|
|
||||||
res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
|
|
||||||
wpa_ie, wpa_ie_len,
|
|
||||||
elems.mdie, elems.mdie_len);
|
|
||||||
if (res == WPA_INVALID_GROUP)
|
|
||||||
resp = WLAN_STATUS_GROUP_CIPHER_NOT_VALID;
|
|
||||||
else if (res == WPA_INVALID_PAIRWISE)
|
|
||||||
resp = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID;
|
|
||||||
else if (res == WPA_INVALID_AKMP)
|
|
||||||
resp = WLAN_STATUS_AKMP_NOT_VALID;
|
|
||||||
else if (res == WPA_ALLOC_FAIL)
|
|
||||||
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
||||||
#ifdef CONFIG_IEEE80211W
|
|
||||||
else if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION)
|
|
||||||
resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
|
|
||||||
else if (res == WPA_INVALID_MGMT_GROUP_CIPHER)
|
|
||||||
resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
|
|
||||||
#endif /* CONFIG_IEEE80211W */
|
|
||||||
else if (res == WPA_INVALID_MDIE)
|
|
||||||
resp = WLAN_STATUS_INVALID_MDIE;
|
|
||||||
else if (res != WPA_IE_OK)
|
|
||||||
resp = WLAN_STATUS_INVALID_IE;
|
|
||||||
if (resp != WLAN_STATUS_SUCCESS)
|
if (resp != WLAN_STATUS_SUCCESS)
|
||||||
goto fail;
|
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 &&
|
|
||||||
(!reassoc || 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)
|
if (hostapd_get_aid(hapd, sta) < 0) {
|
||||||
ap_sta_start_sa_query(hapd, sta);
|
hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
|
||||||
|
HOSTAPD_LEVEL_INFO, "No room for more AIDs");
|
||||||
resp = WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY;
|
resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
|
||||||
goto fail;
|
goto fail;
|
||||||
}
|
}
|
||||||
|
|
||||||
if (wpa_auth_uses_mfp(sta->wpa_sm))
|
sta->capability = capab_info;
|
||||||
sta->flags |= WLAN_STA_MFP;
|
sta->listen_interval = listen_interval;
|
||||||
else
|
|
||||||
sta->flags &= ~WLAN_STA_MFP;
|
|
||||||
#endif /* CONFIG_IEEE80211W */
|
|
||||||
|
|
||||||
#ifdef CONFIG_IEEE80211R
|
|
||||||
if (sta->auth_alg == WLAN_AUTH_FT) {
|
|
||||||
if (!reassoc) {
|
|
||||||
wpa_printf(MSG_DEBUG, "FT: " MACSTR " tried "
|
|
||||||
"to use association (not "
|
|
||||||
"re-association) with FT auth_alg",
|
|
||||||
MAC2STR(sta->addr));
|
|
||||||
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
||||||
goto fail;
|
|
||||||
}
|
|
||||||
|
|
||||||
resp = wpa_ft_validate_reassoc(sta->wpa_sm, pos, left);
|
|
||||||
if (resp != WLAN_STATUS_SUCCESS)
|
|
||||||
goto fail;
|
|
||||||
}
|
|
||||||
#endif /* CONFIG_IEEE80211R */
|
|
||||||
#ifdef CONFIG_IEEE80211N
|
|
||||||
if ((sta->flags & WLAN_STA_HT) &&
|
|
||||||
wpa_auth_get_pairwise(sta->wpa_sm) == WPA_CIPHER_TKIP) {
|
|
||||||
wpa_printf(MSG_DEBUG, "HT: " MACSTR " tried to "
|
|
||||||
"use TKIP with HT association",
|
|
||||||
MAC2STR(sta->addr));
|
|
||||||
resp = WLAN_STATUS_CIPHER_REJECTED_PER_POLICY;
|
|
||||||
goto fail;
|
|
||||||
}
|
|
||||||
#endif /* CONFIG_IEEE80211N */
|
|
||||||
} else
|
|
||||||
wpa_auth_sta_no_wpa(sta->wpa_sm);
|
|
||||||
|
|
||||||
if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G)
|
if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G)
|
||||||
sta->flags |= WLAN_STA_NONERP;
|
sta->flags |= WLAN_STA_NONERP;
|
||||||
|
|
@ -1045,54 +1254,7 @@ static void handle_assoc(struct hostapd_data *hapd,
|
||||||
ieee802_11_set_beacons(hapd->iface);
|
ieee802_11_set_beacons(hapd->iface);
|
||||||
}
|
}
|
||||||
|
|
||||||
if (hostapd_get_aid(hapd, sta) < 0) {
|
update_ht_state(hapd, sta);
|
||||||
resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
|
|
||||||
wpa_printf(MSG_ERROR, " no room for more AIDs");
|
|
||||||
goto fail;
|
|
||||||
}
|
|
||||||
|
|
||||||
#ifdef CONFIG_IEEE80211N
|
|
||||||
if ((sta->flags & WLAN_STA_HT) && sta->ht_capabilities) {
|
|
||||||
u16 ht_capab = le_to_host16(
|
|
||||||
sta->ht_capabilities->ht_capabilities_info);
|
|
||||||
wpa_printf(MSG_DEBUG, "HT: STA " MACSTR " HT Capabilities "
|
|
||||||
"Info: 0x%04x", MAC2STR(sta->addr), ht_capab);
|
|
||||||
if ((ht_capab & HT_CAP_INFO_GREEN_FIELD) == 0) {
|
|
||||||
if (!sta->no_ht_gf_set) {
|
|
||||||
sta->no_ht_gf_set = 1;
|
|
||||||
hapd->iface->num_sta_ht_no_gf++;
|
|
||||||
}
|
|
||||||
wpa_printf(MSG_DEBUG, "%s STA " MACSTR " - no "
|
|
||||||
"greenfield, num of non-gf stations %d",
|
|
||||||
__func__, MAC2STR(sta->addr),
|
|
||||||
hapd->iface->num_sta_ht_no_gf);
|
|
||||||
}
|
|
||||||
if ((ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET) == 0) {
|
|
||||||
if (!sta->ht_20mhz_set) {
|
|
||||||
sta->ht_20mhz_set = 1;
|
|
||||||
hapd->iface->num_sta_ht_20mhz++;
|
|
||||||
}
|
|
||||||
wpa_printf(MSG_DEBUG, "%s STA " MACSTR " - 20 MHz HT, "
|
|
||||||
"num of 20MHz HT STAs %d",
|
|
||||||
__func__, MAC2STR(sta->addr),
|
|
||||||
hapd->iface->num_sta_ht_20mhz);
|
|
||||||
}
|
|
||||||
} else {
|
|
||||||
if (!sta->no_ht_set) {
|
|
||||||
sta->no_ht_set = 1;
|
|
||||||
hapd->iface->num_sta_no_ht++;
|
|
||||||
}
|
|
||||||
if (hapd->iconf->ieee80211n) {
|
|
||||||
wpa_printf(MSG_DEBUG, "%s STA " MACSTR
|
|
||||||
" - no HT, num of non-HT stations %d",
|
|
||||||
__func__, MAC2STR(sta->addr),
|
|
||||||
hapd->iface->num_sta_no_ht);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
if (hostapd_ht_operation_update(hapd->iface) > 0)
|
|
||||||
ieee802_11_set_beacons(hapd->iface);
|
|
||||||
#endif /* CONFIG_IEEE80211N */
|
|
||||||
|
|
||||||
hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
|
hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
|
||||||
HOSTAPD_LEVEL_DEBUG,
|
HOSTAPD_LEVEL_DEBUG,
|
||||||
|
|
@ -1129,60 +1291,7 @@ static void handle_assoc(struct hostapd_data *hapd,
|
||||||
sta->timeout_next = STA_NULLFUNC;
|
sta->timeout_next = STA_NULLFUNC;
|
||||||
|
|
||||||
fail:
|
fail:
|
||||||
os_memset(buf, 0, sizeof(buf));
|
send_assoc_resp(hapd, sta, resp, reassoc, pos, left);
|
||||||
reply = (struct ieee80211_mgmt *) buf;
|
|
||||||
reply->frame_control =
|
|
||||||
IEEE80211_FC(WLAN_FC_TYPE_MGMT,
|
|
||||||
(send_deauth ? WLAN_FC_STYPE_DEAUTH :
|
|
||||||
(reassoc ? WLAN_FC_STYPE_REASSOC_RESP :
|
|
||||||
WLAN_FC_STYPE_ASSOC_RESP)));
|
|
||||||
os_memcpy(reply->da, mgmt->sa, ETH_ALEN);
|
|
||||||
os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
|
|
||||||
os_memcpy(reply->bssid, mgmt->bssid, ETH_ALEN);
|
|
||||||
|
|
||||||
send_len = IEEE80211_HDRLEN;
|
|
||||||
if (send_deauth) {
|
|
||||||
send_len += sizeof(reply->u.deauth);
|
|
||||||
reply->u.deauth.reason_code = host_to_le16(resp);
|
|
||||||
} else {
|
|
||||||
u8 *p;
|
|
||||||
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(resp);
|
|
||||||
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);
|
|
||||||
if (sta->flags & WLAN_STA_WMM)
|
|
||||||
p = hostapd_eid_wmm(hapd, p);
|
|
||||||
|
|
||||||
p = hostapd_eid_ht_capabilities(hapd, p);
|
|
||||||
p = hostapd_eid_ht_operation(hapd, p);
|
|
||||||
|
|
||||||
#ifdef CONFIG_IEEE80211R
|
|
||||||
if (resp == 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,
|
|
||||||
pos, left);
|
|
||||||
}
|
|
||||||
#endif /* CONFIG_IEEE80211R */
|
|
||||||
|
|
||||||
#ifdef CONFIG_IEEE80211W
|
|
||||||
if (resp == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY)
|
|
||||||
p = hostapd_eid_assoc_comeback_time(hapd, sta, p);
|
|
||||||
#endif /* CONFIG_IEEE80211W */
|
|
||||||
|
|
||||||
send_len += p - reply->u.assoc_resp.variable;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (hostapd_send_mgmt_frame(hapd, reply, send_len) < 0)
|
|
||||||
perror("handle_assoc: send");
|
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
|
|
|
||||||
Loading…
Reference in a new issue