9557ba336b
IEEE Std 802.11-2016, 12.4.7.6 specifies: An SAE Commit message with a status code not equal to SUCCESS shall indicate that a peer rejects a previously sent SAE Commit message. An SAE Confirm message, with a status code not equal to SUCCESS, shall indicate that a peer rejects a previously sent SAE Confirm message. Thus when SAE authentication failure happens, authentication transaction sequence number should not be incremented. Signed-off-by: Jia Ding <jiad@codeaurora.org>
7074 lines
195 KiB
C
7074 lines
195 KiB
C
/*
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* hostapd / IEEE 802.11 Management
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* Copyright (c) 2002-2017, Jouni Malinen <j@w1.fi>
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*
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* This software may be distributed under the terms of the BSD license.
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* See README for more details.
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*/
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#include "utils/includes.h"
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#ifndef CONFIG_NATIVE_WINDOWS
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#include "utils/common.h"
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#include "utils/eloop.h"
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#include "crypto/crypto.h"
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#include "crypto/sha256.h"
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#include "crypto/sha384.h"
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#include "crypto/sha512.h"
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#include "crypto/random.h"
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#include "common/ieee802_11_defs.h"
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#include "common/ieee802_11_common.h"
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#include "common/wpa_ctrl.h"
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#include "common/sae.h"
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#include "common/dpp.h"
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#include "common/ocv.h"
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#include "common/wpa_common.h"
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#include "common/wpa_ctrl.h"
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#include "common/ptksa_cache.h"
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#include "radius/radius.h"
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#include "radius/radius_client.h"
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#include "p2p/p2p.h"
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#include "wps/wps.h"
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#include "fst/fst.h"
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#include "hostapd.h"
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#include "beacon.h"
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#include "ieee802_11_auth.h"
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#include "sta_info.h"
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#include "ieee802_1x.h"
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#include "wpa_auth.h"
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#include "pmksa_cache_auth.h"
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#include "wmm.h"
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#include "ap_list.h"
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#include "accounting.h"
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#include "ap_config.h"
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#include "ap_mlme.h"
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#include "p2p_hostapd.h"
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#include "ap_drv_ops.h"
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#include "wnm_ap.h"
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#include "hw_features.h"
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#include "ieee802_11.h"
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#include "dfs.h"
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#include "mbo_ap.h"
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#include "rrm.h"
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#include "taxonomy.h"
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#include "fils_hlp.h"
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#include "dpp_hostapd.h"
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#include "gas_query_ap.h"
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#ifdef CONFIG_FILS
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static struct wpabuf *
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prepare_auth_resp_fils(struct hostapd_data *hapd,
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struct sta_info *sta, u16 *resp,
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struct rsn_pmksa_cache_entry *pmksa,
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struct wpabuf *erp_resp,
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const u8 *msk, size_t msk_len,
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int *is_pub);
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#endif /* CONFIG_FILS */
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#ifdef CONFIG_PASN
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static int handle_auth_pasn_resp(struct hostapd_data *hapd,
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struct sta_info *sta,
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struct rsn_pmksa_cache_entry *pmksa,
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u16 status);
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#ifdef CONFIG_FILS
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static void pasn_fils_auth_resp(struct hostapd_data *hapd,
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struct sta_info *sta, u16 status,
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struct wpabuf *erp_resp,
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const u8 *msk, size_t msk_len);
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#endif /* CONFIG_FILS */
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#endif /* CONFIG_PASN */
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static void handle_auth(struct hostapd_data *hapd,
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const struct ieee80211_mgmt *mgmt, size_t len,
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int rssi, int from_queue);
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u8 * hostapd_eid_multi_ap(struct hostapd_data *hapd, u8 *eid)
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{
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u8 multi_ap_val = 0;
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if (!hapd->conf->multi_ap)
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return eid;
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if (hapd->conf->multi_ap & BACKHAUL_BSS)
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multi_ap_val |= MULTI_AP_BACKHAUL_BSS;
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if (hapd->conf->multi_ap & FRONTHAUL_BSS)
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multi_ap_val |= MULTI_AP_FRONTHAUL_BSS;
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return eid + add_multi_ap_ie(eid, 9, multi_ap_val);
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}
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u8 * hostapd_eid_supp_rates(struct hostapd_data *hapd, u8 *eid)
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{
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u8 *pos = eid;
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int i, num, count;
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int h2e_required;
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if (hapd->iface->current_rates == NULL)
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return eid;
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*pos++ = WLAN_EID_SUPP_RATES;
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num = hapd->iface->num_rates;
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if (hapd->iconf->ieee80211n && hapd->iconf->require_ht)
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num++;
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if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht)
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num++;
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h2e_required = (hapd->conf->sae_pwe == 1 ||
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hostapd_sae_pw_id_in_use(hapd->conf) == 2) &&
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hapd->conf->sae_pwe != 3 &&
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wpa_key_mgmt_sae(hapd->conf->wpa_key_mgmt);
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if (h2e_required)
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num++;
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if (num > 8) {
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/* rest of the rates are encoded in Extended supported
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* rates element */
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num = 8;
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}
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*pos++ = num;
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for (i = 0, count = 0; i < hapd->iface->num_rates && count < num;
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i++) {
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count++;
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*pos = hapd->iface->current_rates[i].rate / 5;
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if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
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*pos |= 0x80;
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pos++;
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}
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if (hapd->iconf->ieee80211n && hapd->iconf->require_ht && count < 8) {
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count++;
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*pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_HT_PHY;
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}
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if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht && count < 8) {
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count++;
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*pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_VHT_PHY;
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}
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if (h2e_required && count < 8) {
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count++;
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*pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_SAE_H2E_ONLY;
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}
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return pos;
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}
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u8 * hostapd_eid_ext_supp_rates(struct hostapd_data *hapd, u8 *eid)
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{
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u8 *pos = eid;
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int i, num, count;
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int h2e_required;
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if (hapd->iface->current_rates == NULL)
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return eid;
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num = hapd->iface->num_rates;
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if (hapd->iconf->ieee80211n && hapd->iconf->require_ht)
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num++;
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if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht)
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num++;
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h2e_required = (hapd->conf->sae_pwe == 1 ||
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hostapd_sae_pw_id_in_use(hapd->conf) == 2) &&
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hapd->conf->sae_pwe != 3 &&
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wpa_key_mgmt_sae(hapd->conf->wpa_key_mgmt);
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if (h2e_required)
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num++;
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if (num <= 8)
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return eid;
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num -= 8;
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*pos++ = WLAN_EID_EXT_SUPP_RATES;
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*pos++ = num;
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for (i = 0, count = 0; i < hapd->iface->num_rates && count < num + 8;
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i++) {
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count++;
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if (count <= 8)
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continue; /* already in SuppRates IE */
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*pos = hapd->iface->current_rates[i].rate / 5;
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if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
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*pos |= 0x80;
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pos++;
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}
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if (hapd->iconf->ieee80211n && hapd->iconf->require_ht) {
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count++;
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if (count > 8)
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*pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_HT_PHY;
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}
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if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht) {
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count++;
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if (count > 8)
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*pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_VHT_PHY;
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}
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if (h2e_required) {
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count++;
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if (count > 8)
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*pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_SAE_H2E_ONLY;
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}
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return pos;
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}
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u8 * hostapd_eid_rm_enabled_capab(struct hostapd_data *hapd, u8 *eid,
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size_t len)
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{
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size_t i;
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for (i = 0; i < RRM_CAPABILITIES_IE_LEN; i++) {
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if (hapd->conf->radio_measurements[i])
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break;
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}
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if (i == RRM_CAPABILITIES_IE_LEN || len < 2 + RRM_CAPABILITIES_IE_LEN)
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return eid;
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*eid++ = WLAN_EID_RRM_ENABLED_CAPABILITIES;
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*eid++ = RRM_CAPABILITIES_IE_LEN;
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os_memcpy(eid, hapd->conf->radio_measurements, RRM_CAPABILITIES_IE_LEN);
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return eid + RRM_CAPABILITIES_IE_LEN;
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}
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u16 hostapd_own_capab_info(struct hostapd_data *hapd)
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{
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int capab = WLAN_CAPABILITY_ESS;
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int privacy = 0;
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int dfs;
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int i;
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/* Check if any of configured channels require DFS */
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dfs = hostapd_is_dfs_required(hapd->iface);
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if (dfs < 0) {
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wpa_printf(MSG_WARNING, "Failed to check if DFS is required; ret=%d",
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dfs);
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dfs = 0;
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}
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if (hapd->iface->num_sta_no_short_preamble == 0 &&
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hapd->iconf->preamble == SHORT_PREAMBLE)
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capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
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#ifdef CONFIG_WEP
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privacy = hapd->conf->ssid.wep.keys_set;
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if (hapd->conf->ieee802_1x &&
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(hapd->conf->default_wep_key_len ||
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hapd->conf->individual_wep_key_len))
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privacy = 1;
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#endif /* CONFIG_WEP */
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if (hapd->conf->wpa)
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privacy = 1;
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#ifdef CONFIG_HS20
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if (hapd->conf->osen)
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privacy = 1;
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#endif /* CONFIG_HS20 */
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if (privacy)
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capab |= WLAN_CAPABILITY_PRIVACY;
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if (hapd->iface->current_mode &&
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hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G &&
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hapd->iface->num_sta_no_short_slot_time == 0)
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capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
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/*
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* Currently, Spectrum Management capability bit is set when directly
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* requested in configuration by spectrum_mgmt_required or when AP is
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* running on DFS channel.
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* TODO: Also consider driver support for TPC to set Spectrum Mgmt bit
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*/
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if (hapd->iface->current_mode &&
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hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211A &&
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(hapd->iconf->spectrum_mgmt_required || dfs))
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capab |= WLAN_CAPABILITY_SPECTRUM_MGMT;
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for (i = 0; i < RRM_CAPABILITIES_IE_LEN; i++) {
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if (hapd->conf->radio_measurements[i]) {
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capab |= IEEE80211_CAP_RRM;
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break;
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}
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}
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return capab;
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}
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#ifdef CONFIG_WEP
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#ifndef CONFIG_NO_RC4
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static u16 auth_shared_key(struct hostapd_data *hapd, struct sta_info *sta,
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u16 auth_transaction, const u8 *challenge,
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int iswep)
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{
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hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
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HOSTAPD_LEVEL_DEBUG,
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"authentication (shared key, transaction %d)",
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auth_transaction);
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if (auth_transaction == 1) {
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if (!sta->challenge) {
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/* Generate a pseudo-random challenge */
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u8 key[8];
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sta->challenge = os_zalloc(WLAN_AUTH_CHALLENGE_LEN);
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if (sta->challenge == NULL)
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return WLAN_STATUS_UNSPECIFIED_FAILURE;
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if (os_get_random(key, sizeof(key)) < 0) {
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os_free(sta->challenge);
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sta->challenge = NULL;
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return WLAN_STATUS_UNSPECIFIED_FAILURE;
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}
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rc4_skip(key, sizeof(key), 0,
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sta->challenge, WLAN_AUTH_CHALLENGE_LEN);
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}
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return 0;
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}
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if (auth_transaction != 3)
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return WLAN_STATUS_UNSPECIFIED_FAILURE;
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/* Transaction 3 */
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if (!iswep || !sta->challenge || !challenge ||
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os_memcmp_const(sta->challenge, challenge,
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WLAN_AUTH_CHALLENGE_LEN)) {
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hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
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HOSTAPD_LEVEL_INFO,
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"shared key authentication - invalid "
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"challenge-response");
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return WLAN_STATUS_CHALLENGE_FAIL;
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}
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hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
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HOSTAPD_LEVEL_DEBUG,
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"authentication OK (shared key)");
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sta->flags |= WLAN_STA_AUTH;
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wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
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os_free(sta->challenge);
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sta->challenge = NULL;
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return 0;
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}
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#endif /* CONFIG_NO_RC4 */
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#endif /* CONFIG_WEP */
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static int send_auth_reply(struct hostapd_data *hapd, struct sta_info *sta,
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const u8 *dst, const u8 *bssid,
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u16 auth_alg, u16 auth_transaction, u16 resp,
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const u8 *ies, size_t ies_len, const char *dbg)
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{
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struct ieee80211_mgmt *reply;
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u8 *buf;
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size_t rlen;
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int reply_res = WLAN_STATUS_UNSPECIFIED_FAILURE;
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rlen = IEEE80211_HDRLEN + sizeof(reply->u.auth) + ies_len;
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buf = os_zalloc(rlen);
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if (buf == NULL)
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return -1;
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reply = (struct ieee80211_mgmt *) buf;
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reply->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
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WLAN_FC_STYPE_AUTH);
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os_memcpy(reply->da, dst, ETH_ALEN);
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os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
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os_memcpy(reply->bssid, bssid, ETH_ALEN);
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reply->u.auth.auth_alg = host_to_le16(auth_alg);
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reply->u.auth.auth_transaction = host_to_le16(auth_transaction);
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reply->u.auth.status_code = host_to_le16(resp);
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if (ies && ies_len)
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os_memcpy(reply->u.auth.variable, ies, ies_len);
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wpa_printf(MSG_DEBUG, "authentication reply: STA=" MACSTR
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" auth_alg=%d auth_transaction=%d resp=%d (IE len=%lu) (dbg=%s)",
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MAC2STR(dst), auth_alg, auth_transaction,
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resp, (unsigned long) ies_len, dbg);
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#ifdef CONFIG_TESTING_OPTIONS
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#ifdef CONFIG_SAE
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if (hapd->conf->sae_confirm_immediate == 2 &&
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auth_alg == WLAN_AUTH_SAE) {
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if (auth_transaction == 1 && sta &&
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(resp == WLAN_STATUS_SUCCESS ||
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resp == WLAN_STATUS_SAE_HASH_TO_ELEMENT ||
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resp == WLAN_STATUS_SAE_PK)) {
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wpa_printf(MSG_DEBUG,
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"TESTING: Postpone SAE Commit transmission until Confirm is ready");
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os_free(sta->sae_postponed_commit);
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sta->sae_postponed_commit = buf;
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sta->sae_postponed_commit_len = rlen;
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return WLAN_STATUS_SUCCESS;
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}
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if (auth_transaction == 2 && sta && sta->sae_postponed_commit) {
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wpa_printf(MSG_DEBUG,
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"TESTING: Send postponed SAE Commit first, immediately followed by SAE Confirm");
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if (hostapd_drv_send_mlme(hapd,
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sta->sae_postponed_commit,
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sta->sae_postponed_commit_len,
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0, NULL, 0, 0) < 0)
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wpa_printf(MSG_INFO, "send_auth_reply: send failed");
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os_free(sta->sae_postponed_commit);
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sta->sae_postponed_commit = NULL;
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sta->sae_postponed_commit_len = 0;
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}
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}
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#endif /* CONFIG_SAE */
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#endif /* CONFIG_TESTING_OPTIONS */
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if (hostapd_drv_send_mlme(hapd, reply, rlen, 0, NULL, 0, 0) < 0)
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wpa_printf(MSG_INFO, "send_auth_reply: send failed");
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else
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reply_res = WLAN_STATUS_SUCCESS;
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os_free(buf);
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return reply_res;
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}
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#ifdef CONFIG_IEEE80211R_AP
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static void handle_auth_ft_finish(void *ctx, const u8 *dst, const u8 *bssid,
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u16 auth_transaction, u16 status,
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const u8 *ies, size_t ies_len)
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{
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struct hostapd_data *hapd = ctx;
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struct sta_info *sta;
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int reply_res;
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reply_res = send_auth_reply(hapd, NULL, dst, bssid, WLAN_AUTH_FT,
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auth_transaction, status, ies, ies_len,
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"auth-ft-finish");
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sta = ap_get_sta(hapd, dst);
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if (sta == NULL)
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return;
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if (sta->added_unassoc && (reply_res != WLAN_STATUS_SUCCESS ||
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status != WLAN_STATUS_SUCCESS)) {
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hostapd_drv_sta_remove(hapd, sta->addr);
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sta->added_unassoc = 0;
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return;
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}
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if (status != WLAN_STATUS_SUCCESS)
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return;
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|
|
hostapd_logger(hapd, dst, HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_DEBUG, "authentication OK (FT)");
|
|
sta->flags |= WLAN_STA_AUTH;
|
|
mlme_authenticate_indication(hapd, sta);
|
|
}
|
|
#endif /* CONFIG_IEEE80211R_AP */
|
|
|
|
|
|
#ifdef CONFIG_SAE
|
|
|
|
static void sae_set_state(struct sta_info *sta, enum sae_state state,
|
|
const char *reason)
|
|
{
|
|
wpa_printf(MSG_DEBUG, "SAE: State %s -> %s for peer " MACSTR " (%s)",
|
|
sae_state_txt(sta->sae->state), sae_state_txt(state),
|
|
MAC2STR(sta->addr), reason);
|
|
sta->sae->state = state;
|
|
}
|
|
|
|
|
|
static const char * sae_get_password(struct hostapd_data *hapd,
|
|
struct sta_info *sta,
|
|
const char *rx_id,
|
|
struct sae_password_entry **pw_entry,
|
|
struct sae_pt **s_pt,
|
|
const struct sae_pk **s_pk)
|
|
{
|
|
const char *password = NULL;
|
|
struct sae_password_entry *pw;
|
|
struct sae_pt *pt = NULL;
|
|
const struct sae_pk *pk = NULL;
|
|
|
|
for (pw = hapd->conf->sae_passwords; pw; pw = pw->next) {
|
|
if (!is_broadcast_ether_addr(pw->peer_addr) &&
|
|
os_memcmp(pw->peer_addr, sta->addr, ETH_ALEN) != 0)
|
|
continue;
|
|
if ((rx_id && !pw->identifier) || (!rx_id && pw->identifier))
|
|
continue;
|
|
if (rx_id && pw->identifier &&
|
|
os_strcmp(rx_id, pw->identifier) != 0)
|
|
continue;
|
|
password = pw->password;
|
|
pt = pw->pt;
|
|
if (!(hapd->conf->mesh & MESH_ENABLED))
|
|
pk = pw->pk;
|
|
break;
|
|
}
|
|
if (!password) {
|
|
password = hapd->conf->ssid.wpa_passphrase;
|
|
pt = hapd->conf->ssid.pt;
|
|
}
|
|
|
|
if (pw_entry)
|
|
*pw_entry = pw;
|
|
if (s_pt)
|
|
*s_pt = pt;
|
|
if (s_pk)
|
|
*s_pk = pk;
|
|
|
|
return password;
|
|
}
|
|
|
|
|
|
static struct wpabuf * auth_build_sae_commit(struct hostapd_data *hapd,
|
|
struct sta_info *sta, int update,
|
|
int status_code)
|
|
{
|
|
struct wpabuf *buf;
|
|
const char *password = NULL;
|
|
struct sae_password_entry *pw;
|
|
const char *rx_id = NULL;
|
|
int use_pt = 0;
|
|
struct sae_pt *pt = NULL;
|
|
const struct sae_pk *pk = NULL;
|
|
|
|
if (sta->sae->tmp) {
|
|
rx_id = sta->sae->tmp->pw_id;
|
|
use_pt = sta->sae->h2e;
|
|
#ifdef CONFIG_SAE_PK
|
|
os_memcpy(sta->sae->tmp->own_addr, hapd->own_addr, ETH_ALEN);
|
|
os_memcpy(sta->sae->tmp->peer_addr, sta->addr, ETH_ALEN);
|
|
#endif /* CONFIG_SAE_PK */
|
|
}
|
|
|
|
if (rx_id && hapd->conf->sae_pwe != 3)
|
|
use_pt = 1;
|
|
else if (status_code == WLAN_STATUS_SUCCESS)
|
|
use_pt = 0;
|
|
else if (status_code == WLAN_STATUS_SAE_HASH_TO_ELEMENT ||
|
|
status_code == WLAN_STATUS_SAE_PK)
|
|
use_pt = 1;
|
|
|
|
password = sae_get_password(hapd, sta, rx_id, &pw, &pt, &pk);
|
|
if (!password || (use_pt && !pt)) {
|
|
wpa_printf(MSG_DEBUG, "SAE: No password available");
|
|
return NULL;
|
|
}
|
|
|
|
if (update && use_pt &&
|
|
sae_prepare_commit_pt(sta->sae, pt, hapd->own_addr, sta->addr,
|
|
NULL, pk) < 0)
|
|
return NULL;
|
|
|
|
if (update && !use_pt &&
|
|
sae_prepare_commit(hapd->own_addr, sta->addr,
|
|
(u8 *) password, os_strlen(password),
|
|
sta->sae) < 0) {
|
|
wpa_printf(MSG_DEBUG, "SAE: Could not pick PWE");
|
|
return NULL;
|
|
}
|
|
|
|
if (pw && pw->vlan_id) {
|
|
if (!sta->sae->tmp) {
|
|
wpa_printf(MSG_INFO,
|
|
"SAE: No temporary data allocated - cannot store VLAN ID");
|
|
return NULL;
|
|
}
|
|
sta->sae->tmp->vlan_id = pw->vlan_id;
|
|
}
|
|
|
|
buf = wpabuf_alloc(SAE_COMMIT_MAX_LEN +
|
|
(rx_id ? 3 + os_strlen(rx_id) : 0));
|
|
if (buf &&
|
|
sae_write_commit(sta->sae, buf, sta->sae->tmp ?
|
|
sta->sae->tmp->anti_clogging_token : NULL,
|
|
rx_id) < 0) {
|
|
wpabuf_free(buf);
|
|
buf = NULL;
|
|
}
|
|
|
|
return buf;
|
|
}
|
|
|
|
|
|
static struct wpabuf * auth_build_sae_confirm(struct hostapd_data *hapd,
|
|
struct sta_info *sta)
|
|
{
|
|
struct wpabuf *buf;
|
|
|
|
buf = wpabuf_alloc(SAE_CONFIRM_MAX_LEN);
|
|
if (buf == NULL)
|
|
return NULL;
|
|
|
|
#ifdef CONFIG_SAE_PK
|
|
#ifdef CONFIG_TESTING_OPTIONS
|
|
if (sta->sae->tmp)
|
|
sta->sae->tmp->omit_pk_elem = hapd->conf->sae_pk_omit;
|
|
#endif /* CONFIG_TESTING_OPTIONS */
|
|
#endif /* CONFIG_SAE_PK */
|
|
|
|
if (sae_write_confirm(sta->sae, buf) < 0) {
|
|
wpabuf_free(buf);
|
|
return NULL;
|
|
}
|
|
|
|
return buf;
|
|
}
|
|
|
|
|
|
static int auth_sae_send_commit(struct hostapd_data *hapd,
|
|
struct sta_info *sta,
|
|
const u8 *bssid, int update, int status_code)
|
|
{
|
|
struct wpabuf *data;
|
|
int reply_res;
|
|
u16 status;
|
|
|
|
data = auth_build_sae_commit(hapd, sta, update, status_code);
|
|
if (!data && sta->sae->tmp && sta->sae->tmp->pw_id)
|
|
return WLAN_STATUS_UNKNOWN_PASSWORD_IDENTIFIER;
|
|
if (data == NULL)
|
|
return WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
|
|
if (sta->sae->tmp && sta->sae->pk)
|
|
status = WLAN_STATUS_SAE_PK;
|
|
else if (sta->sae->tmp && sta->sae->h2e)
|
|
status = WLAN_STATUS_SAE_HASH_TO_ELEMENT;
|
|
else
|
|
status = WLAN_STATUS_SUCCESS;
|
|
#ifdef CONFIG_TESTING_OPTIONS
|
|
if (hapd->conf->sae_commit_status >= 0 &&
|
|
hapd->conf->sae_commit_status != status) {
|
|
wpa_printf(MSG_INFO,
|
|
"TESTING: Override SAE commit status code %u --> %d",
|
|
status, hapd->conf->sae_commit_status);
|
|
status = hapd->conf->sae_commit_status;
|
|
}
|
|
#endif /* CONFIG_TESTING_OPTIONS */
|
|
reply_res = send_auth_reply(hapd, sta, sta->addr, bssid,
|
|
WLAN_AUTH_SAE, 1,
|
|
status, wpabuf_head(data),
|
|
wpabuf_len(data), "sae-send-commit");
|
|
|
|
wpabuf_free(data);
|
|
|
|
return reply_res;
|
|
}
|
|
|
|
|
|
static int auth_sae_send_confirm(struct hostapd_data *hapd,
|
|
struct sta_info *sta,
|
|
const u8 *bssid)
|
|
{
|
|
struct wpabuf *data;
|
|
int reply_res;
|
|
|
|
data = auth_build_sae_confirm(hapd, sta);
|
|
if (data == NULL)
|
|
return WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
|
|
reply_res = send_auth_reply(hapd, sta, sta->addr, bssid,
|
|
WLAN_AUTH_SAE, 2,
|
|
WLAN_STATUS_SUCCESS, wpabuf_head(data),
|
|
wpabuf_len(data), "sae-send-confirm");
|
|
|
|
wpabuf_free(data);
|
|
|
|
return reply_res;
|
|
}
|
|
|
|
#endif /* CONFIG_SAE */
|
|
|
|
|
|
#if defined(CONFIG_SAE) || defined(CONFIG_PASN)
|
|
|
|
static int use_anti_clogging(struct hostapd_data *hapd)
|
|
{
|
|
struct sta_info *sta;
|
|
unsigned int open = 0;
|
|
|
|
if (hapd->conf->anti_clogging_threshold == 0)
|
|
return 1;
|
|
|
|
for (sta = hapd->sta_list; sta; sta = sta->next) {
|
|
#ifdef CONFIG_SAE
|
|
if (sta->sae &&
|
|
(sta->sae->state == SAE_COMMITTED ||
|
|
sta->sae->state == SAE_CONFIRMED))
|
|
open++;
|
|
#endif /* CONFIG_SAE */
|
|
#ifdef CONFIG_PASN
|
|
if (sta->pasn && sta->pasn->ecdh)
|
|
open++;
|
|
#endif /* CONFIG_PASN */
|
|
if (open >= hapd->conf->anti_clogging_threshold)
|
|
return 1;
|
|
}
|
|
|
|
#ifdef CONFIG_SAE
|
|
/* In addition to already existing open SAE sessions, check whether
|
|
* there are enough pending commit messages in the processing queue to
|
|
* potentially result in too many open sessions. */
|
|
if (open + dl_list_len(&hapd->sae_commit_queue) >=
|
|
hapd->conf->anti_clogging_threshold)
|
|
return 1;
|
|
#endif /* CONFIG_SAE */
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int comeback_token_hash(struct hostapd_data *hapd, const u8 *addr,
|
|
u8 *idx)
|
|
{
|
|
u8 hash[SHA256_MAC_LEN];
|
|
|
|
if (hmac_sha256(hapd->comeback_key, sizeof(hapd->comeback_key),
|
|
addr, ETH_ALEN, hash) < 0)
|
|
return -1;
|
|
*idx = hash[0];
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int check_comeback_token(struct hostapd_data *hapd, const u8 *addr,
|
|
const u8 *token, size_t token_len)
|
|
{
|
|
u8 mac[SHA256_MAC_LEN];
|
|
const u8 *addrs[2];
|
|
size_t len[2];
|
|
u16 token_idx;
|
|
u8 idx;
|
|
|
|
if (token_len != SHA256_MAC_LEN ||
|
|
comeback_token_hash(hapd, addr, &idx) < 0)
|
|
return -1;
|
|
token_idx = hapd->comeback_pending_idx[idx];
|
|
if (token_idx == 0 || token_idx != WPA_GET_BE16(token)) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"Comeback: Invalid anti-clogging token from "
|
|
MACSTR " - token_idx 0x%04x, expected 0x%04x",
|
|
MAC2STR(addr), WPA_GET_BE16(token), token_idx);
|
|
return -1;
|
|
}
|
|
|
|
addrs[0] = addr;
|
|
len[0] = ETH_ALEN;
|
|
addrs[1] = token;
|
|
len[1] = 2;
|
|
if (hmac_sha256_vector(hapd->comeback_key, sizeof(hapd->comeback_key),
|
|
2, addrs, len, mac) < 0 ||
|
|
os_memcmp_const(token + 2, &mac[2], SHA256_MAC_LEN - 2) != 0)
|
|
return -1;
|
|
|
|
hapd->comeback_pending_idx[idx] = 0; /* invalidate used token */
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static struct wpabuf * auth_build_token_req(struct hostapd_data *hapd,
|
|
int group, const u8 *addr, int h2e)
|
|
{
|
|
struct wpabuf *buf;
|
|
u8 *token;
|
|
struct os_reltime now;
|
|
u8 idx[2];
|
|
const u8 *addrs[2];
|
|
size_t len[2];
|
|
u8 p_idx;
|
|
u16 token_idx;
|
|
|
|
os_get_reltime(&now);
|
|
if (!os_reltime_initialized(&hapd->last_comeback_key_update) ||
|
|
os_reltime_expired(&now, &hapd->last_comeback_key_update, 60) ||
|
|
hapd->comeback_idx == 0xffff) {
|
|
if (random_get_bytes(hapd->comeback_key,
|
|
sizeof(hapd->comeback_key)) < 0)
|
|
return NULL;
|
|
wpa_hexdump(MSG_DEBUG, "Comeback: Updated token key",
|
|
hapd->comeback_key, sizeof(hapd->comeback_key));
|
|
hapd->last_comeback_key_update = now;
|
|
hapd->comeback_idx = 0;
|
|
os_memset(hapd->comeback_pending_idx, 0,
|
|
sizeof(hapd->comeback_pending_idx));
|
|
}
|
|
|
|
buf = wpabuf_alloc(sizeof(le16) + 3 + SHA256_MAC_LEN);
|
|
if (buf == NULL)
|
|
return NULL;
|
|
|
|
if (group)
|
|
wpabuf_put_le16(buf, group); /* Finite Cyclic Group */
|
|
|
|
if (h2e) {
|
|
/* Encapsulate Anti-clogging Token field in a container IE */
|
|
wpabuf_put_u8(buf, WLAN_EID_EXTENSION);
|
|
wpabuf_put_u8(buf, 1 + SHA256_MAC_LEN);
|
|
wpabuf_put_u8(buf, WLAN_EID_EXT_ANTI_CLOGGING_TOKEN);
|
|
}
|
|
|
|
if (comeback_token_hash(hapd, addr, &p_idx) < 0) {
|
|
wpabuf_free(buf);
|
|
return NULL;
|
|
}
|
|
|
|
token_idx = hapd->comeback_pending_idx[p_idx];
|
|
if (!token_idx) {
|
|
hapd->comeback_idx++;
|
|
token_idx = hapd->comeback_idx;
|
|
hapd->comeback_pending_idx[p_idx] = token_idx;
|
|
}
|
|
WPA_PUT_BE16(idx, token_idx);
|
|
token = wpabuf_put(buf, SHA256_MAC_LEN);
|
|
addrs[0] = addr;
|
|
len[0] = ETH_ALEN;
|
|
addrs[1] = idx;
|
|
len[1] = sizeof(idx);
|
|
if (hmac_sha256_vector(hapd->comeback_key, sizeof(hapd->comeback_key),
|
|
2, addrs, len, token) < 0) {
|
|
wpabuf_free(buf);
|
|
return NULL;
|
|
}
|
|
WPA_PUT_BE16(token, token_idx);
|
|
|
|
return buf;
|
|
}
|
|
|
|
#endif /* defined(CONFIG_SAE) || defined(CONFIG_PASN) */
|
|
|
|
|
|
#ifdef CONFIG_SAE
|
|
|
|
static int sae_check_big_sync(struct hostapd_data *hapd, struct sta_info *sta)
|
|
{
|
|
if (sta->sae->sync > hapd->conf->sae_sync) {
|
|
sae_set_state(sta, SAE_NOTHING, "Sync > dot11RSNASAESync");
|
|
sta->sae->sync = 0;
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
static void auth_sae_retransmit_timer(void *eloop_ctx, void *eloop_data)
|
|
{
|
|
struct hostapd_data *hapd = eloop_ctx;
|
|
struct sta_info *sta = eloop_data;
|
|
int ret;
|
|
|
|
if (sae_check_big_sync(hapd, sta))
|
|
return;
|
|
sta->sae->sync++;
|
|
wpa_printf(MSG_DEBUG, "SAE: Auth SAE retransmit timer for " MACSTR
|
|
" (sync=%d state=%s)",
|
|
MAC2STR(sta->addr), sta->sae->sync,
|
|
sae_state_txt(sta->sae->state));
|
|
|
|
switch (sta->sae->state) {
|
|
case SAE_COMMITTED:
|
|
ret = auth_sae_send_commit(hapd, sta, hapd->own_addr, 0, -1);
|
|
eloop_register_timeout(0,
|
|
hapd->dot11RSNASAERetransPeriod * 1000,
|
|
auth_sae_retransmit_timer, hapd, sta);
|
|
break;
|
|
case SAE_CONFIRMED:
|
|
ret = auth_sae_send_confirm(hapd, sta, hapd->own_addr);
|
|
eloop_register_timeout(0,
|
|
hapd->dot11RSNASAERetransPeriod * 1000,
|
|
auth_sae_retransmit_timer, hapd, sta);
|
|
break;
|
|
default:
|
|
ret = -1;
|
|
break;
|
|
}
|
|
|
|
if (ret != WLAN_STATUS_SUCCESS)
|
|
wpa_printf(MSG_INFO, "SAE: Failed to retransmit: ret=%d", ret);
|
|
}
|
|
|
|
|
|
void sae_clear_retransmit_timer(struct hostapd_data *hapd, struct sta_info *sta)
|
|
{
|
|
eloop_cancel_timeout(auth_sae_retransmit_timer, hapd, sta);
|
|
}
|
|
|
|
|
|
static void sae_set_retransmit_timer(struct hostapd_data *hapd,
|
|
struct sta_info *sta)
|
|
{
|
|
if (!(hapd->conf->mesh & MESH_ENABLED))
|
|
return;
|
|
|
|
eloop_cancel_timeout(auth_sae_retransmit_timer, hapd, sta);
|
|
eloop_register_timeout(0, hapd->dot11RSNASAERetransPeriod * 1000,
|
|
auth_sae_retransmit_timer, hapd, sta);
|
|
}
|
|
|
|
|
|
static void sae_sme_send_external_auth_status(struct hostapd_data *hapd,
|
|
struct sta_info *sta, u16 status)
|
|
{
|
|
struct external_auth params;
|
|
|
|
os_memset(¶ms, 0, sizeof(params));
|
|
params.status = status;
|
|
params.bssid = sta->addr;
|
|
if (status == WLAN_STATUS_SUCCESS && sta->sae &&
|
|
!hapd->conf->disable_pmksa_caching)
|
|
params.pmkid = sta->sae->pmkid;
|
|
|
|
hostapd_drv_send_external_auth_status(hapd, ¶ms);
|
|
}
|
|
|
|
|
|
void sae_accept_sta(struct hostapd_data *hapd, struct sta_info *sta)
|
|
{
|
|
#ifndef CONFIG_NO_VLAN
|
|
struct vlan_description vlan_desc;
|
|
|
|
if (sta->sae->tmp && sta->sae->tmp->vlan_id > 0) {
|
|
wpa_printf(MSG_DEBUG, "SAE: Assign STA " MACSTR
|
|
" to VLAN ID %d",
|
|
MAC2STR(sta->addr), sta->sae->tmp->vlan_id);
|
|
|
|
os_memset(&vlan_desc, 0, sizeof(vlan_desc));
|
|
vlan_desc.notempty = 1;
|
|
vlan_desc.untagged = sta->sae->tmp->vlan_id;
|
|
if (!hostapd_vlan_valid(hapd->conf->vlan, &vlan_desc)) {
|
|
wpa_printf(MSG_INFO,
|
|
"Invalid VLAN ID %d in sae_password",
|
|
sta->sae->tmp->vlan_id);
|
|
return;
|
|
}
|
|
|
|
if (ap_sta_set_vlan(hapd, sta, &vlan_desc) < 0 ||
|
|
ap_sta_bind_vlan(hapd, sta) < 0) {
|
|
wpa_printf(MSG_INFO,
|
|
"Failed to assign VLAN ID %d from sae_password to "
|
|
MACSTR, sta->sae->tmp->vlan_id,
|
|
MAC2STR(sta->addr));
|
|
return;
|
|
}
|
|
}
|
|
#endif /* CONFIG_NO_VLAN */
|
|
|
|
sta->flags |= WLAN_STA_AUTH;
|
|
sta->auth_alg = WLAN_AUTH_SAE;
|
|
mlme_authenticate_indication(hapd, sta);
|
|
wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
|
|
sae_set_state(sta, SAE_ACCEPTED, "Accept Confirm");
|
|
crypto_bignum_deinit(sta->sae->peer_commit_scalar_accepted, 0);
|
|
sta->sae->peer_commit_scalar_accepted = sta->sae->peer_commit_scalar;
|
|
sta->sae->peer_commit_scalar = NULL;
|
|
wpa_auth_pmksa_add_sae(hapd->wpa_auth, sta->addr,
|
|
sta->sae->pmk, sta->sae->pmkid);
|
|
sae_sme_send_external_auth_status(hapd, sta, WLAN_STATUS_SUCCESS);
|
|
}
|
|
|
|
|
|
static int sae_sm_step(struct hostapd_data *hapd, struct sta_info *sta,
|
|
const u8 *bssid, u16 auth_transaction, u16 status_code,
|
|
int allow_reuse, int *sta_removed)
|
|
{
|
|
int ret;
|
|
|
|
*sta_removed = 0;
|
|
|
|
if (auth_transaction != 1 && auth_transaction != 2)
|
|
return WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
|
|
wpa_printf(MSG_DEBUG, "SAE: Peer " MACSTR " state=%s auth_trans=%u",
|
|
MAC2STR(sta->addr), sae_state_txt(sta->sae->state),
|
|
auth_transaction);
|
|
switch (sta->sae->state) {
|
|
case SAE_NOTHING:
|
|
if (auth_transaction == 1) {
|
|
if (sta->sae->tmp) {
|
|
sta->sae->h2e =
|
|
(status_code ==
|
|
WLAN_STATUS_SAE_HASH_TO_ELEMENT ||
|
|
status_code == WLAN_STATUS_SAE_PK);
|
|
sta->sae->pk =
|
|
status_code == WLAN_STATUS_SAE_PK;
|
|
}
|
|
ret = auth_sae_send_commit(hapd, sta, bssid,
|
|
!allow_reuse, status_code);
|
|
if (ret)
|
|
return ret;
|
|
sae_set_state(sta, SAE_COMMITTED, "Sent Commit");
|
|
|
|
if (sae_process_commit(sta->sae) < 0)
|
|
return WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
|
|
/*
|
|
* In mesh case, both Commit and Confirm are sent
|
|
* immediately. In infrastructure BSS, by default, only
|
|
* a single Authentication frame (Commit) is expected
|
|
* from the AP here and the second one (Confirm) will
|
|
* be sent once the STA has sent its second
|
|
* Authentication frame (Confirm). This behavior can be
|
|
* overridden with explicit configuration so that the
|
|
* infrastructure BSS case sends both frames together.
|
|
*/
|
|
if ((hapd->conf->mesh & MESH_ENABLED) ||
|
|
hapd->conf->sae_confirm_immediate) {
|
|
/*
|
|
* Send both Commit and Confirm immediately
|
|
* based on SAE finite state machine
|
|
* Nothing -> Confirm transition.
|
|
*/
|
|
ret = auth_sae_send_confirm(hapd, sta, bssid);
|
|
if (ret)
|
|
return ret;
|
|
sae_set_state(sta, SAE_CONFIRMED,
|
|
"Sent Confirm (mesh)");
|
|
} else {
|
|
/*
|
|
* For infrastructure BSS, send only the Commit
|
|
* message now to get alternating sequence of
|
|
* Authentication frames between the AP and STA.
|
|
* Confirm will be sent in
|
|
* Committed -> Confirmed/Accepted transition
|
|
* when receiving Confirm from STA.
|
|
*/
|
|
}
|
|
sta->sae->sync = 0;
|
|
sae_set_retransmit_timer(hapd, sta);
|
|
} else {
|
|
hostapd_logger(hapd, sta->addr,
|
|
HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_DEBUG,
|
|
"SAE confirm before commit");
|
|
}
|
|
break;
|
|
case SAE_COMMITTED:
|
|
sae_clear_retransmit_timer(hapd, sta);
|
|
if (auth_transaction == 1) {
|
|
if (sae_process_commit(sta->sae) < 0)
|
|
return WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
|
|
ret = auth_sae_send_confirm(hapd, sta, bssid);
|
|
if (ret)
|
|
return ret;
|
|
sae_set_state(sta, SAE_CONFIRMED, "Sent Confirm");
|
|
sta->sae->sync = 0;
|
|
sae_set_retransmit_timer(hapd, sta);
|
|
} else if (hapd->conf->mesh & MESH_ENABLED) {
|
|
/*
|
|
* In mesh case, follow SAE finite state machine and
|
|
* send Commit now, if sync count allows.
|
|
*/
|
|
if (sae_check_big_sync(hapd, sta))
|
|
return WLAN_STATUS_SUCCESS;
|
|
sta->sae->sync++;
|
|
|
|
ret = auth_sae_send_commit(hapd, sta, bssid, 0,
|
|
status_code);
|
|
if (ret)
|
|
return ret;
|
|
|
|
sae_set_retransmit_timer(hapd, sta);
|
|
} else {
|
|
/*
|
|
* For instructure BSS, send the postponed Confirm from
|
|
* Nothing -> Confirmed transition that was reduced to
|
|
* Nothing -> Committed above.
|
|
*/
|
|
ret = auth_sae_send_confirm(hapd, sta, bssid);
|
|
if (ret)
|
|
return ret;
|
|
|
|
sae_set_state(sta, SAE_CONFIRMED, "Sent Confirm");
|
|
|
|
/*
|
|
* Since this was triggered on Confirm RX, run another
|
|
* step to get to Accepted without waiting for
|
|
* additional events.
|
|
*/
|
|
return sae_sm_step(hapd, sta, bssid, auth_transaction,
|
|
WLAN_STATUS_SUCCESS, 0, sta_removed);
|
|
}
|
|
break;
|
|
case SAE_CONFIRMED:
|
|
sae_clear_retransmit_timer(hapd, sta);
|
|
if (auth_transaction == 1) {
|
|
if (sae_check_big_sync(hapd, sta))
|
|
return WLAN_STATUS_SUCCESS;
|
|
sta->sae->sync++;
|
|
|
|
ret = auth_sae_send_commit(hapd, sta, bssid, 1,
|
|
status_code);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (sae_process_commit(sta->sae) < 0)
|
|
return WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
|
|
ret = auth_sae_send_confirm(hapd, sta, bssid);
|
|
if (ret)
|
|
return ret;
|
|
|
|
sae_set_retransmit_timer(hapd, sta);
|
|
} else {
|
|
sta->sae->send_confirm = 0xffff;
|
|
sae_accept_sta(hapd, sta);
|
|
}
|
|
break;
|
|
case SAE_ACCEPTED:
|
|
if (auth_transaction == 1 &&
|
|
(hapd->conf->mesh & MESH_ENABLED)) {
|
|
wpa_printf(MSG_DEBUG, "SAE: remove the STA (" MACSTR
|
|
") doing reauthentication",
|
|
MAC2STR(sta->addr));
|
|
wpa_auth_pmksa_remove(hapd->wpa_auth, sta->addr);
|
|
ap_free_sta(hapd, sta);
|
|
*sta_removed = 1;
|
|
} else if (auth_transaction == 1) {
|
|
wpa_printf(MSG_DEBUG, "SAE: Start reauthentication");
|
|
ret = auth_sae_send_commit(hapd, sta, bssid, 1,
|
|
status_code);
|
|
if (ret)
|
|
return ret;
|
|
sae_set_state(sta, SAE_COMMITTED, "Sent Commit");
|
|
|
|
if (sae_process_commit(sta->sae) < 0)
|
|
return WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
sta->sae->sync = 0;
|
|
sae_set_retransmit_timer(hapd, sta);
|
|
} else {
|
|
if (sae_check_big_sync(hapd, sta))
|
|
return WLAN_STATUS_SUCCESS;
|
|
sta->sae->sync++;
|
|
|
|
ret = auth_sae_send_confirm(hapd, sta, bssid);
|
|
sae_clear_temp_data(sta->sae);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
break;
|
|
default:
|
|
wpa_printf(MSG_ERROR, "SAE: invalid state %d",
|
|
sta->sae->state);
|
|
return WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
}
|
|
return WLAN_STATUS_SUCCESS;
|
|
}
|
|
|
|
|
|
static void sae_pick_next_group(struct hostapd_data *hapd, struct sta_info *sta)
|
|
{
|
|
struct sae_data *sae = sta->sae;
|
|
int i, *groups = hapd->conf->sae_groups;
|
|
int default_groups[] = { 19, 0 };
|
|
|
|
if (sae->state != SAE_COMMITTED)
|
|
return;
|
|
|
|
wpa_printf(MSG_DEBUG, "SAE: Previously selected group: %d", sae->group);
|
|
|
|
if (!groups)
|
|
groups = default_groups;
|
|
for (i = 0; groups[i] > 0; i++) {
|
|
if (sae->group == groups[i])
|
|
break;
|
|
}
|
|
|
|
if (groups[i] <= 0) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"SAE: Previously selected group not found from the current configuration");
|
|
return;
|
|
}
|
|
|
|
for (;;) {
|
|
i++;
|
|
if (groups[i] <= 0) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"SAE: No alternative group enabled");
|
|
return;
|
|
}
|
|
|
|
if (sae_set_group(sae, groups[i]) < 0)
|
|
continue;
|
|
|
|
break;
|
|
}
|
|
wpa_printf(MSG_DEBUG, "SAE: Selected new group: %d", groups[i]);
|
|
}
|
|
|
|
|
|
static int sae_status_success(struct hostapd_data *hapd, u16 status_code)
|
|
{
|
|
int sae_pwe = hapd->conf->sae_pwe;
|
|
int id_in_use;
|
|
bool sae_pk = false;
|
|
|
|
id_in_use = hostapd_sae_pw_id_in_use(hapd->conf);
|
|
if (id_in_use == 2 && sae_pwe != 3)
|
|
sae_pwe = 1;
|
|
else if (id_in_use == 1 && sae_pwe == 0)
|
|
sae_pwe = 2;
|
|
#ifdef CONFIG_SAE_PK
|
|
sae_pk = hostapd_sae_pk_in_use(hapd->conf);
|
|
if (sae_pwe == 0 && sae_pk)
|
|
sae_pwe = 2;
|
|
#endif /* CONFIG_SAE_PK */
|
|
|
|
return ((sae_pwe == 0 || sae_pwe == 3) &&
|
|
status_code == WLAN_STATUS_SUCCESS) ||
|
|
(sae_pwe == 1 &&
|
|
(status_code == WLAN_STATUS_SAE_HASH_TO_ELEMENT ||
|
|
(sae_pk && status_code == WLAN_STATUS_SAE_PK))) ||
|
|
(sae_pwe == 2 &&
|
|
(status_code == WLAN_STATUS_SUCCESS ||
|
|
status_code == WLAN_STATUS_SAE_HASH_TO_ELEMENT ||
|
|
(sae_pk && status_code == WLAN_STATUS_SAE_PK)));
|
|
}
|
|
|
|
|
|
static int sae_is_group_enabled(struct hostapd_data *hapd, int group)
|
|
{
|
|
int *groups = hapd->conf->sae_groups;
|
|
int default_groups[] = { 19, 0 };
|
|
int i;
|
|
|
|
if (!groups)
|
|
groups = default_groups;
|
|
|
|
for (i = 0; groups[i] > 0; i++) {
|
|
if (groups[i] == group)
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int check_sae_rejected_groups(struct hostapd_data *hapd,
|
|
struct sae_data *sae)
|
|
{
|
|
const struct wpabuf *groups;
|
|
size_t i, count;
|
|
const u8 *pos;
|
|
|
|
if (!sae->tmp)
|
|
return 0;
|
|
groups = sae->tmp->peer_rejected_groups;
|
|
if (!groups)
|
|
return 0;
|
|
|
|
pos = wpabuf_head(groups);
|
|
count = wpabuf_len(groups) / 2;
|
|
for (i = 0; i < count; i++) {
|
|
int enabled;
|
|
u16 group;
|
|
|
|
group = WPA_GET_LE16(pos);
|
|
pos += 2;
|
|
enabled = sae_is_group_enabled(hapd, group);
|
|
wpa_printf(MSG_DEBUG, "SAE: Rejected group %u is %s",
|
|
group, enabled ? "enabled" : "disabled");
|
|
if (enabled)
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static void handle_auth_sae(struct hostapd_data *hapd, struct sta_info *sta,
|
|
const struct ieee80211_mgmt *mgmt, size_t len,
|
|
u16 auth_transaction, u16 status_code)
|
|
{
|
|
int resp = WLAN_STATUS_SUCCESS;
|
|
struct wpabuf *data = NULL;
|
|
int *groups = hapd->conf->sae_groups;
|
|
int default_groups[] = { 19, 0 };
|
|
const u8 *pos, *end;
|
|
int sta_removed = 0;
|
|
bool success_status;
|
|
|
|
if (!groups)
|
|
groups = default_groups;
|
|
|
|
#ifdef CONFIG_TESTING_OPTIONS
|
|
if (hapd->conf->sae_reflection_attack && auth_transaction == 1) {
|
|
wpa_printf(MSG_DEBUG, "SAE: TESTING - reflection attack");
|
|
pos = mgmt->u.auth.variable;
|
|
end = ((const u8 *) mgmt) + len;
|
|
resp = status_code;
|
|
send_auth_reply(hapd, sta, mgmt->sa, mgmt->bssid, WLAN_AUTH_SAE,
|
|
auth_transaction, resp, pos, end - pos,
|
|
"auth-sae-reflection-attack");
|
|
goto remove_sta;
|
|
}
|
|
|
|
if (hapd->conf->sae_commit_override && auth_transaction == 1) {
|
|
wpa_printf(MSG_DEBUG, "SAE: TESTING - commit override");
|
|
send_auth_reply(hapd, sta, mgmt->sa, mgmt->bssid, WLAN_AUTH_SAE,
|
|
auth_transaction, resp,
|
|
wpabuf_head(hapd->conf->sae_commit_override),
|
|
wpabuf_len(hapd->conf->sae_commit_override),
|
|
"sae-commit-override");
|
|
goto remove_sta;
|
|
}
|
|
#endif /* CONFIG_TESTING_OPTIONS */
|
|
if (!sta->sae) {
|
|
if (auth_transaction != 1 ||
|
|
!sae_status_success(hapd, status_code)) {
|
|
wpa_printf(MSG_DEBUG, "SAE: Unexpected Status Code %u",
|
|
status_code);
|
|
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto reply;
|
|
}
|
|
sta->sae = os_zalloc(sizeof(*sta->sae));
|
|
if (!sta->sae) {
|
|
resp = -1;
|
|
goto remove_sta;
|
|
}
|
|
sae_set_state(sta, SAE_NOTHING, "Init");
|
|
sta->sae->sync = 0;
|
|
}
|
|
|
|
if (sta->mesh_sae_pmksa_caching) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"SAE: Cancel use of mesh PMKSA caching because peer starts SAE authentication");
|
|
wpa_auth_pmksa_remove(hapd->wpa_auth, sta->addr);
|
|
sta->mesh_sae_pmksa_caching = 0;
|
|
}
|
|
|
|
if (auth_transaction == 1) {
|
|
const u8 *token = NULL;
|
|
size_t token_len = 0;
|
|
int allow_reuse = 0;
|
|
|
|
hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_DEBUG,
|
|
"start SAE authentication (RX commit, status=%u (%s))",
|
|
status_code, status2str(status_code));
|
|
|
|
if ((hapd->conf->mesh & MESH_ENABLED) &&
|
|
status_code == WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ &&
|
|
sta->sae->tmp) {
|
|
pos = mgmt->u.auth.variable;
|
|
end = ((const u8 *) mgmt) + len;
|
|
if (pos + sizeof(le16) > end) {
|
|
wpa_printf(MSG_ERROR,
|
|
"SAE: Too short anti-clogging token request");
|
|
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto reply;
|
|
}
|
|
resp = sae_group_allowed(sta->sae, groups,
|
|
WPA_GET_LE16(pos));
|
|
if (resp != WLAN_STATUS_SUCCESS) {
|
|
wpa_printf(MSG_ERROR,
|
|
"SAE: Invalid group in anti-clogging token request");
|
|
goto reply;
|
|
}
|
|
pos += sizeof(le16);
|
|
|
|
wpabuf_free(sta->sae->tmp->anti_clogging_token);
|
|
sta->sae->tmp->anti_clogging_token =
|
|
wpabuf_alloc_copy(pos, end - pos);
|
|
if (sta->sae->tmp->anti_clogging_token == NULL) {
|
|
wpa_printf(MSG_ERROR,
|
|
"SAE: Failed to alloc for anti-clogging token");
|
|
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto remove_sta;
|
|
}
|
|
|
|
/*
|
|
* IEEE Std 802.11-2012, 11.3.8.6.4: If the Status code
|
|
* is 76, a new Commit Message shall be constructed
|
|
* with the Anti-Clogging Token from the received
|
|
* Authentication frame, and the commit-scalar and
|
|
* COMMIT-ELEMENT previously sent.
|
|
*/
|
|
resp = auth_sae_send_commit(hapd, sta, mgmt->bssid, 0,
|
|
status_code);
|
|
if (resp != WLAN_STATUS_SUCCESS) {
|
|
wpa_printf(MSG_ERROR,
|
|
"SAE: Failed to send commit message");
|
|
goto remove_sta;
|
|
}
|
|
sae_set_state(sta, SAE_COMMITTED,
|
|
"Sent Commit (anti-clogging token case in mesh)");
|
|
sta->sae->sync = 0;
|
|
sae_set_retransmit_timer(hapd, sta);
|
|
return;
|
|
}
|
|
|
|
if ((hapd->conf->mesh & MESH_ENABLED) &&
|
|
status_code ==
|
|
WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED &&
|
|
sta->sae->tmp) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"SAE: Peer did not accept our SAE group");
|
|
sae_pick_next_group(hapd, sta);
|
|
goto remove_sta;
|
|
}
|
|
|
|
if (!sae_status_success(hapd, status_code))
|
|
goto remove_sta;
|
|
|
|
if (!(hapd->conf->mesh & MESH_ENABLED) &&
|
|
sta->sae->state == SAE_COMMITTED) {
|
|
/* This is needed in the infrastructure BSS case to
|
|
* address a sequence where a STA entry may remain in
|
|
* hostapd across two attempts to do SAE authentication
|
|
* by the same STA. The second attempt may end up trying
|
|
* to use a different group and that would not be
|
|
* allowed if we remain in Committed state with the
|
|
* previously set parameters. */
|
|
pos = mgmt->u.auth.variable;
|
|
end = ((const u8 *) mgmt) + len;
|
|
if (end - pos >= (int) sizeof(le16) &&
|
|
sae_group_allowed(sta->sae, groups,
|
|
WPA_GET_LE16(pos)) ==
|
|
WLAN_STATUS_SUCCESS) {
|
|
/* Do not waste resources deriving the same PWE
|
|
* again since the same group is reused. */
|
|
sae_set_state(sta, SAE_NOTHING,
|
|
"Allow previous PWE to be reused");
|
|
allow_reuse = 1;
|
|
} else {
|
|
sae_set_state(sta, SAE_NOTHING,
|
|
"Clear existing state to allow restart");
|
|
sae_clear_data(sta->sae);
|
|
}
|
|
}
|
|
|
|
resp = sae_parse_commit(sta->sae, mgmt->u.auth.variable,
|
|
((const u8 *) mgmt) + len -
|
|
mgmt->u.auth.variable, &token,
|
|
&token_len, groups, status_code ==
|
|
WLAN_STATUS_SAE_HASH_TO_ELEMENT ||
|
|
status_code == WLAN_STATUS_SAE_PK);
|
|
if (resp == SAE_SILENTLY_DISCARD) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"SAE: Drop commit message from " MACSTR " due to reflection attack",
|
|
MAC2STR(sta->addr));
|
|
goto remove_sta;
|
|
}
|
|
|
|
if (resp == WLAN_STATUS_UNKNOWN_PASSWORD_IDENTIFIER) {
|
|
wpa_msg(hapd->msg_ctx, MSG_INFO,
|
|
WPA_EVENT_SAE_UNKNOWN_PASSWORD_IDENTIFIER
|
|
MACSTR, MAC2STR(sta->addr));
|
|
sae_clear_retransmit_timer(hapd, sta);
|
|
sae_set_state(sta, SAE_NOTHING,
|
|
"Unknown Password Identifier");
|
|
goto remove_sta;
|
|
}
|
|
|
|
if (token &&
|
|
check_comeback_token(hapd, sta->addr, token, token_len)
|
|
< 0) {
|
|
wpa_printf(MSG_DEBUG, "SAE: Drop commit message with "
|
|
"incorrect token from " MACSTR,
|
|
MAC2STR(sta->addr));
|
|
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto remove_sta;
|
|
}
|
|
|
|
if (resp != WLAN_STATUS_SUCCESS)
|
|
goto reply;
|
|
|
|
if (check_sae_rejected_groups(hapd, sta->sae)) {
|
|
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto reply;
|
|
}
|
|
|
|
if (!token && use_anti_clogging(hapd) && !allow_reuse) {
|
|
int h2e = 0;
|
|
|
|
wpa_printf(MSG_DEBUG,
|
|
"SAE: Request anti-clogging token from "
|
|
MACSTR, MAC2STR(sta->addr));
|
|
if (sta->sae->tmp)
|
|
h2e = sta->sae->h2e;
|
|
if (status_code == WLAN_STATUS_SAE_HASH_TO_ELEMENT ||
|
|
status_code == WLAN_STATUS_SAE_PK)
|
|
h2e = 1;
|
|
data = auth_build_token_req(hapd, sta->sae->group,
|
|
sta->addr, h2e);
|
|
resp = WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ;
|
|
if (hapd->conf->mesh & MESH_ENABLED)
|
|
sae_set_state(sta, SAE_NOTHING,
|
|
"Request anti-clogging token case in mesh");
|
|
goto reply;
|
|
}
|
|
|
|
resp = sae_sm_step(hapd, sta, mgmt->bssid, auth_transaction,
|
|
status_code, allow_reuse, &sta_removed);
|
|
} else if (auth_transaction == 2) {
|
|
hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_DEBUG,
|
|
"SAE authentication (RX confirm, status=%u (%s))",
|
|
status_code, status2str(status_code));
|
|
if (status_code != WLAN_STATUS_SUCCESS)
|
|
goto remove_sta;
|
|
if (sta->sae->state >= SAE_CONFIRMED ||
|
|
!(hapd->conf->mesh & MESH_ENABLED)) {
|
|
const u8 *var;
|
|
size_t var_len;
|
|
u16 peer_send_confirm;
|
|
|
|
var = mgmt->u.auth.variable;
|
|
var_len = ((u8 *) mgmt) + len - mgmt->u.auth.variable;
|
|
if (var_len < 2) {
|
|
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto reply;
|
|
}
|
|
|
|
peer_send_confirm = WPA_GET_LE16(var);
|
|
|
|
if (sta->sae->state == SAE_ACCEPTED &&
|
|
(peer_send_confirm <= sta->sae->rc ||
|
|
peer_send_confirm == 0xffff)) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"SAE: Silently ignore unexpected Confirm from peer "
|
|
MACSTR
|
|
" (peer-send-confirm=%u Rc=%u)",
|
|
MAC2STR(sta->addr),
|
|
peer_send_confirm, sta->sae->rc);
|
|
return;
|
|
}
|
|
|
|
if (sae_check_confirm(sta->sae, var, var_len) < 0) {
|
|
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto reply;
|
|
}
|
|
sta->sae->rc = peer_send_confirm;
|
|
}
|
|
resp = sae_sm_step(hapd, sta, mgmt->bssid, auth_transaction,
|
|
status_code, 0, &sta_removed);
|
|
} else {
|
|
hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_DEBUG,
|
|
"unexpected SAE authentication transaction %u (status=%u (%s))",
|
|
auth_transaction, status_code,
|
|
status2str(status_code));
|
|
if (status_code != WLAN_STATUS_SUCCESS)
|
|
goto remove_sta;
|
|
resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
|
|
}
|
|
|
|
reply:
|
|
if (!sta_removed && resp != WLAN_STATUS_SUCCESS) {
|
|
pos = mgmt->u.auth.variable;
|
|
end = ((const u8 *) mgmt) + len;
|
|
|
|
/* Copy the Finite Cyclic Group field from the request if we
|
|
* rejected it as unsupported group. */
|
|
if (resp == WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED &&
|
|
!data && end - pos >= 2)
|
|
data = wpabuf_alloc_copy(pos, 2);
|
|
|
|
sae_sme_send_external_auth_status(hapd, sta, resp);
|
|
send_auth_reply(hapd, sta, mgmt->sa, mgmt->bssid, WLAN_AUTH_SAE,
|
|
auth_transaction, resp,
|
|
data ? wpabuf_head(data) : (u8 *) "",
|
|
data ? wpabuf_len(data) : 0, "auth-sae");
|
|
}
|
|
|
|
remove_sta:
|
|
if (auth_transaction == 1)
|
|
success_status = sae_status_success(hapd, status_code);
|
|
else
|
|
success_status = status_code == WLAN_STATUS_SUCCESS;
|
|
if (!sta_removed && sta->added_unassoc &&
|
|
(resp != WLAN_STATUS_SUCCESS || !success_status)) {
|
|
hostapd_drv_sta_remove(hapd, sta->addr);
|
|
sta->added_unassoc = 0;
|
|
}
|
|
wpabuf_free(data);
|
|
}
|
|
|
|
|
|
/**
|
|
* auth_sae_init_committed - Send COMMIT and start SAE in committed state
|
|
* @hapd: BSS data for the device initiating the authentication
|
|
* @sta: the peer to which commit authentication frame is sent
|
|
*
|
|
* This function implements Init event handling (IEEE Std 802.11-2012,
|
|
* 11.3.8.6.3) in which initial COMMIT message is sent. Prior to calling, the
|
|
* sta->sae structure should be initialized appropriately via a call to
|
|
* sae_prepare_commit().
|
|
*/
|
|
int auth_sae_init_committed(struct hostapd_data *hapd, struct sta_info *sta)
|
|
{
|
|
int ret;
|
|
|
|
if (!sta->sae || !sta->sae->tmp)
|
|
return -1;
|
|
|
|
if (sta->sae->state != SAE_NOTHING)
|
|
return -1;
|
|
|
|
ret = auth_sae_send_commit(hapd, sta, hapd->own_addr, 0, -1);
|
|
if (ret)
|
|
return -1;
|
|
|
|
sae_set_state(sta, SAE_COMMITTED, "Init and sent commit");
|
|
sta->sae->sync = 0;
|
|
sae_set_retransmit_timer(hapd, sta);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
void auth_sae_process_commit(void *eloop_ctx, void *user_ctx)
|
|
{
|
|
struct hostapd_data *hapd = eloop_ctx;
|
|
struct hostapd_sae_commit_queue *q;
|
|
unsigned int queue_len;
|
|
|
|
q = dl_list_first(&hapd->sae_commit_queue,
|
|
struct hostapd_sae_commit_queue, list);
|
|
if (!q)
|
|
return;
|
|
wpa_printf(MSG_DEBUG,
|
|
"SAE: Process next available message from queue");
|
|
dl_list_del(&q->list);
|
|
handle_auth(hapd, (const struct ieee80211_mgmt *) q->msg, q->len,
|
|
q->rssi, 1);
|
|
os_free(q);
|
|
|
|
if (eloop_is_timeout_registered(auth_sae_process_commit, hapd, NULL))
|
|
return;
|
|
queue_len = dl_list_len(&hapd->sae_commit_queue);
|
|
eloop_register_timeout(0, queue_len * 10000, auth_sae_process_commit,
|
|
hapd, NULL);
|
|
}
|
|
|
|
|
|
static void auth_sae_queue(struct hostapd_data *hapd,
|
|
const struct ieee80211_mgmt *mgmt, size_t len,
|
|
int rssi)
|
|
{
|
|
struct hostapd_sae_commit_queue *q, *q2;
|
|
unsigned int queue_len;
|
|
const struct ieee80211_mgmt *mgmt2;
|
|
|
|
queue_len = dl_list_len(&hapd->sae_commit_queue);
|
|
if (queue_len >= 15) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"SAE: No more room in message queue - drop the new frame from "
|
|
MACSTR, MAC2STR(mgmt->sa));
|
|
return;
|
|
}
|
|
|
|
wpa_printf(MSG_DEBUG, "SAE: Queue Authentication message from "
|
|
MACSTR " for processing (queue_len %u)", MAC2STR(mgmt->sa),
|
|
queue_len);
|
|
q = os_zalloc(sizeof(*q) + len);
|
|
if (!q)
|
|
return;
|
|
q->rssi = rssi;
|
|
q->len = len;
|
|
os_memcpy(q->msg, mgmt, len);
|
|
|
|
/* Check whether there is already a queued Authentication frame from the
|
|
* same station with the same transaction number and if so, replace that
|
|
* queue entry with the new one. This avoids issues with a peer that
|
|
* sends multiple times (e.g., due to frequent SAE retries). There is no
|
|
* point in us trying to process the old attempts after a new one has
|
|
* obsoleted them. */
|
|
dl_list_for_each(q2, &hapd->sae_commit_queue,
|
|
struct hostapd_sae_commit_queue, list) {
|
|
mgmt2 = (const struct ieee80211_mgmt *) q2->msg;
|
|
if (os_memcmp(mgmt->sa, mgmt2->sa, ETH_ALEN) == 0 &&
|
|
mgmt->u.auth.auth_transaction ==
|
|
mgmt2->u.auth.auth_transaction) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"SAE: Replace queued message from same STA with same transaction number");
|
|
dl_list_add(&q2->list, &q->list);
|
|
dl_list_del(&q2->list);
|
|
os_free(q2);
|
|
goto queued;
|
|
}
|
|
}
|
|
|
|
/* No pending identical entry, so add to the end of the queue */
|
|
dl_list_add_tail(&hapd->sae_commit_queue, &q->list);
|
|
|
|
queued:
|
|
if (eloop_is_timeout_registered(auth_sae_process_commit, hapd, NULL))
|
|
return;
|
|
eloop_register_timeout(0, queue_len * 10000, auth_sae_process_commit,
|
|
hapd, NULL);
|
|
}
|
|
|
|
|
|
static int auth_sae_queued_addr(struct hostapd_data *hapd, const u8 *addr)
|
|
{
|
|
struct hostapd_sae_commit_queue *q;
|
|
const struct ieee80211_mgmt *mgmt;
|
|
|
|
dl_list_for_each(q, &hapd->sae_commit_queue,
|
|
struct hostapd_sae_commit_queue, list) {
|
|
mgmt = (const struct ieee80211_mgmt *) q->msg;
|
|
if (os_memcmp(addr, mgmt->sa, ETH_ALEN) == 0)
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#endif /* CONFIG_SAE */
|
|
|
|
|
|
static u16 wpa_res_to_status_code(enum wpa_validate_result res)
|
|
{
|
|
switch (res) {
|
|
case WPA_IE_OK:
|
|
return WLAN_STATUS_SUCCESS;
|
|
case WPA_INVALID_IE:
|
|
return WLAN_STATUS_INVALID_IE;
|
|
case WPA_INVALID_GROUP:
|
|
return WLAN_STATUS_GROUP_CIPHER_NOT_VALID;
|
|
case WPA_INVALID_PAIRWISE:
|
|
return WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID;
|
|
case WPA_INVALID_AKMP:
|
|
return WLAN_STATUS_AKMP_NOT_VALID;
|
|
case WPA_NOT_ENABLED:
|
|
return WLAN_STATUS_INVALID_IE;
|
|
case WPA_ALLOC_FAIL:
|
|
return WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
case WPA_MGMT_FRAME_PROTECTION_VIOLATION:
|
|
return WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
|
|
case WPA_INVALID_MGMT_GROUP_CIPHER:
|
|
return WLAN_STATUS_CIPHER_REJECTED_PER_POLICY;
|
|
case WPA_INVALID_MDIE:
|
|
return WLAN_STATUS_INVALID_MDIE;
|
|
case WPA_INVALID_PROTO:
|
|
return WLAN_STATUS_INVALID_IE;
|
|
case WPA_INVALID_PMKID:
|
|
return WLAN_STATUS_INVALID_PMKID;
|
|
case WPA_DENIED_OTHER_REASON:
|
|
return WLAN_STATUS_ASSOC_DENIED_UNSPEC;
|
|
}
|
|
return WLAN_STATUS_INVALID_IE;
|
|
}
|
|
|
|
|
|
#ifdef CONFIG_FILS
|
|
|
|
static void handle_auth_fils_finish(struct hostapd_data *hapd,
|
|
struct sta_info *sta, u16 resp,
|
|
struct wpabuf *data, int pub);
|
|
|
|
void handle_auth_fils(struct hostapd_data *hapd, struct sta_info *sta,
|
|
const u8 *pos, size_t len, u16 auth_alg,
|
|
u16 auth_transaction, u16 status_code,
|
|
void (*cb)(struct hostapd_data *hapd,
|
|
struct sta_info *sta, u16 resp,
|
|
struct wpabuf *data, int pub))
|
|
{
|
|
u16 resp = WLAN_STATUS_SUCCESS;
|
|
const u8 *end;
|
|
struct ieee802_11_elems elems;
|
|
enum wpa_validate_result res;
|
|
struct wpa_ie_data rsn;
|
|
struct rsn_pmksa_cache_entry *pmksa = NULL;
|
|
|
|
if (auth_transaction != 1 || status_code != WLAN_STATUS_SUCCESS)
|
|
return;
|
|
|
|
end = pos + len;
|
|
|
|
wpa_hexdump(MSG_DEBUG, "FILS: Authentication frame fields",
|
|
pos, end - pos);
|
|
|
|
/* TODO: FILS PK */
|
|
#ifdef CONFIG_FILS_SK_PFS
|
|
if (auth_alg == WLAN_AUTH_FILS_SK_PFS) {
|
|
u16 group;
|
|
struct wpabuf *pub;
|
|
size_t elem_len;
|
|
|
|
/* Using FILS PFS */
|
|
|
|
/* Finite Cyclic Group */
|
|
if (end - pos < 2) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"FILS: No room for Finite Cyclic Group");
|
|
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto fail;
|
|
}
|
|
group = WPA_GET_LE16(pos);
|
|
pos += 2;
|
|
if (group != hapd->conf->fils_dh_group) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"FILS: Unsupported Finite Cyclic Group: %u (expected %u)",
|
|
group, hapd->conf->fils_dh_group);
|
|
resp = WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED;
|
|
goto fail;
|
|
}
|
|
|
|
crypto_ecdh_deinit(sta->fils_ecdh);
|
|
sta->fils_ecdh = crypto_ecdh_init(group);
|
|
if (!sta->fils_ecdh) {
|
|
wpa_printf(MSG_INFO,
|
|
"FILS: Could not initialize ECDH with group %d",
|
|
group);
|
|
resp = WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED;
|
|
goto fail;
|
|
}
|
|
|
|
pub = crypto_ecdh_get_pubkey(sta->fils_ecdh, 1);
|
|
if (!pub) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"FILS: Failed to derive ECDH public key");
|
|
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto fail;
|
|
}
|
|
elem_len = wpabuf_len(pub);
|
|
wpabuf_free(pub);
|
|
|
|
/* Element */
|
|
if ((size_t) (end - pos) < elem_len) {
|
|
wpa_printf(MSG_DEBUG, "FILS: No room for Element");
|
|
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto fail;
|
|
}
|
|
|
|
wpabuf_free(sta->fils_g_sta);
|
|
sta->fils_g_sta = wpabuf_alloc_copy(pos, elem_len);
|
|
wpabuf_clear_free(sta->fils_dh_ss);
|
|
sta->fils_dh_ss = crypto_ecdh_set_peerkey(sta->fils_ecdh, 1,
|
|
pos, elem_len);
|
|
if (!sta->fils_dh_ss) {
|
|
wpa_printf(MSG_DEBUG, "FILS: ECDH operation failed");
|
|
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto fail;
|
|
}
|
|
wpa_hexdump_buf_key(MSG_DEBUG, "FILS: DH_SS", sta->fils_dh_ss);
|
|
pos += elem_len;
|
|
} else {
|
|
crypto_ecdh_deinit(sta->fils_ecdh);
|
|
sta->fils_ecdh = NULL;
|
|
wpabuf_clear_free(sta->fils_dh_ss);
|
|
sta->fils_dh_ss = NULL;
|
|
}
|
|
#endif /* CONFIG_FILS_SK_PFS */
|
|
|
|
wpa_hexdump(MSG_DEBUG, "FILS: Remaining IEs", pos, end - pos);
|
|
if (ieee802_11_parse_elems(pos, end - pos, &elems, 1) == ParseFailed) {
|
|
wpa_printf(MSG_DEBUG, "FILS: Could not parse elements");
|
|
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto fail;
|
|
}
|
|
|
|
/* RSNE */
|
|
wpa_hexdump(MSG_DEBUG, "FILS: RSN element",
|
|
elems.rsn_ie, elems.rsn_ie_len);
|
|
if (!elems.rsn_ie ||
|
|
wpa_parse_wpa_ie_rsn(elems.rsn_ie - 2, elems.rsn_ie_len + 2,
|
|
&rsn) < 0) {
|
|
wpa_printf(MSG_DEBUG, "FILS: No valid RSN element");
|
|
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto fail;
|
|
}
|
|
|
|
if (!sta->wpa_sm)
|
|
sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, sta->addr,
|
|
NULL);
|
|
if (!sta->wpa_sm) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"FILS: Failed to initialize RSN state machine");
|
|
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto fail;
|
|
}
|
|
|
|
res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
|
|
hapd->iface->freq,
|
|
elems.rsn_ie - 2, elems.rsn_ie_len + 2,
|
|
elems.rsnxe ? elems.rsnxe - 2 : NULL,
|
|
elems.rsnxe ? elems.rsnxe_len + 2 : 0,
|
|
elems.mdie, elems.mdie_len, NULL, 0);
|
|
resp = wpa_res_to_status_code(res);
|
|
if (resp != WLAN_STATUS_SUCCESS)
|
|
goto fail;
|
|
|
|
if (!elems.fils_nonce) {
|
|
wpa_printf(MSG_DEBUG, "FILS: No FILS Nonce field");
|
|
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto fail;
|
|
}
|
|
wpa_hexdump(MSG_DEBUG, "FILS: SNonce", elems.fils_nonce,
|
|
FILS_NONCE_LEN);
|
|
os_memcpy(sta->fils_snonce, elems.fils_nonce, FILS_NONCE_LEN);
|
|
|
|
/* PMKID List */
|
|
if (rsn.pmkid && rsn.num_pmkid > 0) {
|
|
u8 num;
|
|
const u8 *pmkid;
|
|
|
|
wpa_hexdump(MSG_DEBUG, "FILS: PMKID List",
|
|
rsn.pmkid, rsn.num_pmkid * PMKID_LEN);
|
|
|
|
pmkid = rsn.pmkid;
|
|
num = rsn.num_pmkid;
|
|
while (num) {
|
|
wpa_hexdump(MSG_DEBUG, "FILS: PMKID", pmkid, PMKID_LEN);
|
|
pmksa = wpa_auth_pmksa_get(hapd->wpa_auth, sta->addr,
|
|
pmkid);
|
|
if (pmksa)
|
|
break;
|
|
pmksa = wpa_auth_pmksa_get_fils_cache_id(hapd->wpa_auth,
|
|
sta->addr,
|
|
pmkid);
|
|
if (pmksa)
|
|
break;
|
|
pmkid += PMKID_LEN;
|
|
num--;
|
|
}
|
|
}
|
|
if (pmksa && wpa_auth_sta_key_mgmt(sta->wpa_sm) != pmksa->akmp) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"FILS: Matching PMKSA cache entry has different AKMP (0x%x != 0x%x) - ignore",
|
|
wpa_auth_sta_key_mgmt(sta->wpa_sm), pmksa->akmp);
|
|
pmksa = NULL;
|
|
}
|
|
if (pmksa)
|
|
wpa_printf(MSG_DEBUG, "FILS: Found matching PMKSA cache entry");
|
|
|
|
/* FILS Session */
|
|
if (!elems.fils_session) {
|
|
wpa_printf(MSG_DEBUG, "FILS: No FILS Session element");
|
|
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto fail;
|
|
}
|
|
wpa_hexdump(MSG_DEBUG, "FILS: FILS Session", elems.fils_session,
|
|
FILS_SESSION_LEN);
|
|
os_memcpy(sta->fils_session, elems.fils_session, FILS_SESSION_LEN);
|
|
|
|
/* Wrapped Data */
|
|
if (elems.wrapped_data) {
|
|
wpa_hexdump(MSG_DEBUG, "FILS: Wrapped Data",
|
|
elems.wrapped_data,
|
|
elems.wrapped_data_len);
|
|
if (!pmksa) {
|
|
#ifndef CONFIG_NO_RADIUS
|
|
if (!sta->eapol_sm) {
|
|
sta->eapol_sm =
|
|
ieee802_1x_alloc_eapol_sm(hapd, sta);
|
|
}
|
|
wpa_printf(MSG_DEBUG,
|
|
"FILS: Forward EAP-Initiate/Re-auth to authentication server");
|
|
ieee802_1x_encapsulate_radius(
|
|
hapd, sta, elems.wrapped_data,
|
|
elems.wrapped_data_len);
|
|
sta->fils_pending_cb = cb;
|
|
wpa_printf(MSG_DEBUG,
|
|
"FILS: Will send Authentication frame once the response from authentication server is available");
|
|
sta->flags |= WLAN_STA_PENDING_FILS_ERP;
|
|
/* Calculate pending PMKID here so that we do not need
|
|
* to maintain a copy of the EAP-Initiate/Reauth
|
|
* message. */
|
|
if (fils_pmkid_erp(wpa_auth_sta_key_mgmt(sta->wpa_sm),
|
|
elems.wrapped_data,
|
|
elems.wrapped_data_len,
|
|
sta->fils_erp_pmkid) == 0)
|
|
sta->fils_erp_pmkid_set = 1;
|
|
return;
|
|
#else /* CONFIG_NO_RADIUS */
|
|
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto fail;
|
|
#endif /* CONFIG_NO_RADIUS */
|
|
}
|
|
}
|
|
|
|
fail:
|
|
if (cb) {
|
|
struct wpabuf *data;
|
|
int pub = 0;
|
|
|
|
data = prepare_auth_resp_fils(hapd, sta, &resp, pmksa, NULL,
|
|
NULL, 0, &pub);
|
|
if (!data) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"%s: prepare_auth_resp_fils() returned failure",
|
|
__func__);
|
|
}
|
|
|
|
cb(hapd, sta, resp, data, pub);
|
|
}
|
|
}
|
|
|
|
|
|
static struct wpabuf *
|
|
prepare_auth_resp_fils(struct hostapd_data *hapd,
|
|
struct sta_info *sta, u16 *resp,
|
|
struct rsn_pmksa_cache_entry *pmksa,
|
|
struct wpabuf *erp_resp,
|
|
const u8 *msk, size_t msk_len,
|
|
int *is_pub)
|
|
{
|
|
u8 fils_nonce[FILS_NONCE_LEN];
|
|
size_t ielen;
|
|
struct wpabuf *data = NULL;
|
|
const u8 *ie;
|
|
u8 *ie_buf = NULL;
|
|
const u8 *pmk = NULL;
|
|
size_t pmk_len = 0;
|
|
u8 pmk_buf[PMK_LEN_MAX];
|
|
struct wpabuf *pub = NULL;
|
|
|
|
if (*resp != WLAN_STATUS_SUCCESS)
|
|
goto fail;
|
|
|
|
ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &ielen);
|
|
if (!ie) {
|
|
*resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto fail;
|
|
}
|
|
|
|
if (pmksa) {
|
|
/* Add PMKID of the selected PMKSA into RSNE */
|
|
ie_buf = os_malloc(ielen + 2 + 2 + PMKID_LEN);
|
|
if (!ie_buf) {
|
|
*resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto fail;
|
|
}
|
|
|
|
os_memcpy(ie_buf, ie, ielen);
|
|
if (wpa_insert_pmkid(ie_buf, &ielen, pmksa->pmkid) < 0) {
|
|
*resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto fail;
|
|
}
|
|
ie = ie_buf;
|
|
}
|
|
|
|
if (random_get_bytes(fils_nonce, FILS_NONCE_LEN) < 0) {
|
|
*resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto fail;
|
|
}
|
|
wpa_hexdump(MSG_DEBUG, "RSN: Generated FILS Nonce",
|
|
fils_nonce, FILS_NONCE_LEN);
|
|
|
|
#ifdef CONFIG_FILS_SK_PFS
|
|
if (sta->fils_dh_ss && sta->fils_ecdh) {
|
|
pub = crypto_ecdh_get_pubkey(sta->fils_ecdh, 1);
|
|
if (!pub) {
|
|
*resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto fail;
|
|
}
|
|
}
|
|
#endif /* CONFIG_FILS_SK_PFS */
|
|
|
|
data = wpabuf_alloc(1000 + ielen + (pub ? wpabuf_len(pub) : 0));
|
|
if (!data) {
|
|
*resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto fail;
|
|
}
|
|
|
|
/* TODO: FILS PK */
|
|
#ifdef CONFIG_FILS_SK_PFS
|
|
if (pub) {
|
|
/* Finite Cyclic Group */
|
|
wpabuf_put_le16(data, hapd->conf->fils_dh_group);
|
|
|
|
/* Element */
|
|
wpabuf_put_buf(data, pub);
|
|
}
|
|
#endif /* CONFIG_FILS_SK_PFS */
|
|
|
|
/* RSNE */
|
|
wpabuf_put_data(data, ie, ielen);
|
|
|
|
/* MDE when using FILS+FT (already included in ie,ielen with RSNE) */
|
|
|
|
#ifdef CONFIG_IEEE80211R_AP
|
|
if (wpa_key_mgmt_ft(wpa_auth_sta_key_mgmt(sta->wpa_sm))) {
|
|
/* FTE[R1KH-ID,R0KH-ID] when using FILS+FT */
|
|
int res;
|
|
int use_sha384 = wpa_key_mgmt_sha384(
|
|
wpa_auth_sta_key_mgmt(sta->wpa_sm));
|
|
|
|
res = wpa_auth_write_fte(hapd->wpa_auth, use_sha384,
|
|
wpabuf_put(data, 0),
|
|
wpabuf_tailroom(data));
|
|
if (res < 0) {
|
|
*resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto fail;
|
|
}
|
|
wpabuf_put(data, res);
|
|
}
|
|
#endif /* CONFIG_IEEE80211R_AP */
|
|
|
|
/* FILS Nonce */
|
|
wpabuf_put_u8(data, WLAN_EID_EXTENSION); /* Element ID */
|
|
wpabuf_put_u8(data, 1 + FILS_NONCE_LEN); /* Length */
|
|
/* Element ID Extension */
|
|
wpabuf_put_u8(data, WLAN_EID_EXT_FILS_NONCE);
|
|
wpabuf_put_data(data, fils_nonce, FILS_NONCE_LEN);
|
|
|
|
/* FILS Session */
|
|
wpabuf_put_u8(data, WLAN_EID_EXTENSION); /* Element ID */
|
|
wpabuf_put_u8(data, 1 + FILS_SESSION_LEN); /* Length */
|
|
/* Element ID Extension */
|
|
wpabuf_put_u8(data, WLAN_EID_EXT_FILS_SESSION);
|
|
wpabuf_put_data(data, sta->fils_session, FILS_SESSION_LEN);
|
|
|
|
/* Wrapped Data */
|
|
if (!pmksa && erp_resp) {
|
|
wpabuf_put_u8(data, WLAN_EID_EXTENSION); /* Element ID */
|
|
wpabuf_put_u8(data, 1 + wpabuf_len(erp_resp)); /* Length */
|
|
/* Element ID Extension */
|
|
wpabuf_put_u8(data, WLAN_EID_EXT_WRAPPED_DATA);
|
|
wpabuf_put_buf(data, erp_resp);
|
|
|
|
if (fils_rmsk_to_pmk(wpa_auth_sta_key_mgmt(sta->wpa_sm),
|
|
msk, msk_len, sta->fils_snonce, fils_nonce,
|
|
sta->fils_dh_ss ?
|
|
wpabuf_head(sta->fils_dh_ss) : NULL,
|
|
sta->fils_dh_ss ?
|
|
wpabuf_len(sta->fils_dh_ss) : 0,
|
|
pmk_buf, &pmk_len)) {
|
|
wpa_printf(MSG_DEBUG, "FILS: Failed to derive PMK");
|
|
*resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
wpabuf_free(data);
|
|
data = NULL;
|
|
goto fail;
|
|
}
|
|
pmk = pmk_buf;
|
|
|
|
/* Don't use DHss in PTK derivation if PMKSA caching is not
|
|
* used. */
|
|
wpabuf_clear_free(sta->fils_dh_ss);
|
|
sta->fils_dh_ss = NULL;
|
|
|
|
if (sta->fils_erp_pmkid_set) {
|
|
/* TODO: get PMKLifetime from WPA parameters */
|
|
unsigned int dot11RSNAConfigPMKLifetime = 43200;
|
|
int session_timeout;
|
|
|
|
session_timeout = dot11RSNAConfigPMKLifetime;
|
|
if (sta->session_timeout_set) {
|
|
struct os_reltime now, diff;
|
|
|
|
os_get_reltime(&now);
|
|
os_reltime_sub(&sta->session_timeout, &now,
|
|
&diff);
|
|
session_timeout = diff.sec;
|
|
}
|
|
|
|
sta->fils_erp_pmkid_set = 0;
|
|
wpa_auth_add_fils_pmk_pmkid(sta->wpa_sm, pmk, pmk_len,
|
|
sta->fils_erp_pmkid);
|
|
if (!hapd->conf->disable_pmksa_caching &&
|
|
wpa_auth_pmksa_add2(
|
|
hapd->wpa_auth, sta->addr,
|
|
pmk, pmk_len,
|
|
sta->fils_erp_pmkid,
|
|
session_timeout,
|
|
wpa_auth_sta_key_mgmt(sta->wpa_sm)) < 0) {
|
|
wpa_printf(MSG_ERROR,
|
|
"FILS: Failed to add PMKSA cache entry based on ERP");
|
|
}
|
|
}
|
|
} else if (pmksa) {
|
|
pmk = pmksa->pmk;
|
|
pmk_len = pmksa->pmk_len;
|
|
}
|
|
|
|
if (!pmk) {
|
|
wpa_printf(MSG_DEBUG, "FILS: No PMK available");
|
|
*resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
wpabuf_free(data);
|
|
data = NULL;
|
|
goto fail;
|
|
}
|
|
|
|
if (fils_auth_pmk_to_ptk(sta->wpa_sm, pmk, pmk_len,
|
|
sta->fils_snonce, fils_nonce,
|
|
sta->fils_dh_ss ?
|
|
wpabuf_head(sta->fils_dh_ss) : NULL,
|
|
sta->fils_dh_ss ?
|
|
wpabuf_len(sta->fils_dh_ss) : 0,
|
|
sta->fils_g_sta, pub) < 0) {
|
|
*resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
wpabuf_free(data);
|
|
data = NULL;
|
|
goto fail;
|
|
}
|
|
|
|
fail:
|
|
if (is_pub)
|
|
*is_pub = pub != NULL;
|
|
os_free(ie_buf);
|
|
wpabuf_free(pub);
|
|
wpabuf_clear_free(sta->fils_dh_ss);
|
|
sta->fils_dh_ss = NULL;
|
|
#ifdef CONFIG_FILS_SK_PFS
|
|
crypto_ecdh_deinit(sta->fils_ecdh);
|
|
sta->fils_ecdh = NULL;
|
|
#endif /* CONFIG_FILS_SK_PFS */
|
|
return data;
|
|
}
|
|
|
|
|
|
static void handle_auth_fils_finish(struct hostapd_data *hapd,
|
|
struct sta_info *sta, u16 resp,
|
|
struct wpabuf *data, int pub)
|
|
{
|
|
u16 auth_alg;
|
|
|
|
auth_alg = (pub ||
|
|
resp == WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED) ?
|
|
WLAN_AUTH_FILS_SK_PFS : WLAN_AUTH_FILS_SK;
|
|
send_auth_reply(hapd, sta, sta->addr, hapd->own_addr, auth_alg, 2, resp,
|
|
data ? wpabuf_head(data) : (u8 *) "",
|
|
data ? wpabuf_len(data) : 0, "auth-fils-finish");
|
|
wpabuf_free(data);
|
|
|
|
if (resp == WLAN_STATUS_SUCCESS) {
|
|
hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_DEBUG,
|
|
"authentication OK (FILS)");
|
|
sta->flags |= WLAN_STA_AUTH;
|
|
wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
|
|
sta->auth_alg = pub ? WLAN_AUTH_FILS_SK_PFS : WLAN_AUTH_FILS_SK;
|
|
mlme_authenticate_indication(hapd, sta);
|
|
}
|
|
}
|
|
|
|
|
|
void ieee802_11_finish_fils_auth(struct hostapd_data *hapd,
|
|
struct sta_info *sta, int success,
|
|
struct wpabuf *erp_resp,
|
|
const u8 *msk, size_t msk_len)
|
|
{
|
|
u16 resp;
|
|
u32 flags = sta->flags;
|
|
|
|
sta->flags &= ~(WLAN_STA_PENDING_FILS_ERP |
|
|
WLAN_STA_PENDING_PASN_FILS_ERP);
|
|
|
|
resp = success ? WLAN_STATUS_SUCCESS : WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
|
|
if (flags & WLAN_STA_PENDING_FILS_ERP) {
|
|
struct wpabuf *data;
|
|
int pub = 0;
|
|
|
|
if (!sta->fils_pending_cb)
|
|
return;
|
|
|
|
data = prepare_auth_resp_fils(hapd, sta, &resp, NULL, erp_resp,
|
|
msk, msk_len, &pub);
|
|
if (!data) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"%s: prepare_auth_resp_fils() failure",
|
|
__func__);
|
|
}
|
|
sta->fils_pending_cb(hapd, sta, resp, data, pub);
|
|
#ifdef CONFIG_PASN
|
|
} else if (flags & WLAN_STA_PENDING_PASN_FILS_ERP) {
|
|
pasn_fils_auth_resp(hapd, sta, resp, erp_resp,
|
|
msk, msk_len);
|
|
#endif /* CONFIG_PASN */
|
|
}
|
|
}
|
|
|
|
#endif /* CONFIG_FILS */
|
|
|
|
|
|
static int ieee802_11_allowed_address(struct hostapd_data *hapd, const u8 *addr,
|
|
const u8 *msg, size_t len,
|
|
struct radius_sta *info)
|
|
{
|
|
int res;
|
|
|
|
res = hostapd_allowed_address(hapd, addr, msg, len, info, 0);
|
|
|
|
if (res == HOSTAPD_ACL_REJECT) {
|
|
wpa_printf(MSG_DEBUG, "Station " MACSTR
|
|
" not allowed to authenticate",
|
|
MAC2STR(addr));
|
|
return HOSTAPD_ACL_REJECT;
|
|
}
|
|
|
|
if (res == HOSTAPD_ACL_PENDING) {
|
|
wpa_printf(MSG_DEBUG, "Authentication frame from " MACSTR
|
|
" waiting for an external authentication",
|
|
MAC2STR(addr));
|
|
/* Authentication code will re-send the authentication frame
|
|
* after it has received (and cached) information from the
|
|
* external source. */
|
|
return HOSTAPD_ACL_PENDING;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
|
|
static int
|
|
ieee802_11_set_radius_info(struct hostapd_data *hapd, struct sta_info *sta,
|
|
int res, struct radius_sta *info)
|
|
{
|
|
u32 session_timeout = info->session_timeout;
|
|
u32 acct_interim_interval = info->acct_interim_interval;
|
|
struct vlan_description *vlan_id = &info->vlan_id;
|
|
struct hostapd_sta_wpa_psk_short *psk = info->psk;
|
|
char *identity = info->identity;
|
|
char *radius_cui = info->radius_cui;
|
|
|
|
if (vlan_id->notempty &&
|
|
!hostapd_vlan_valid(hapd->conf->vlan, vlan_id)) {
|
|
hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
|
|
HOSTAPD_LEVEL_INFO,
|
|
"Invalid VLAN %d%s received from RADIUS server",
|
|
vlan_id->untagged,
|
|
vlan_id->tagged[0] ? "+" : "");
|
|
return -1;
|
|
}
|
|
if (ap_sta_set_vlan(hapd, sta, vlan_id) < 0)
|
|
return -1;
|
|
if (sta->vlan_id)
|
|
hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
|
|
HOSTAPD_LEVEL_INFO, "VLAN ID %d", sta->vlan_id);
|
|
|
|
hostapd_free_psk_list(sta->psk);
|
|
if (hapd->conf->wpa_psk_radius != PSK_RADIUS_IGNORED)
|
|
hostapd_copy_psk_list(&sta->psk, psk);
|
|
else
|
|
sta->psk = NULL;
|
|
|
|
os_free(sta->identity);
|
|
if (identity)
|
|
sta->identity = os_strdup(identity);
|
|
else
|
|
sta->identity = NULL;
|
|
|
|
os_free(sta->radius_cui);
|
|
if (radius_cui)
|
|
sta->radius_cui = os_strdup(radius_cui);
|
|
else
|
|
sta->radius_cui = NULL;
|
|
|
|
if (hapd->conf->acct_interim_interval == 0 && acct_interim_interval)
|
|
sta->acct_interim_interval = acct_interim_interval;
|
|
if (res == HOSTAPD_ACL_ACCEPT_TIMEOUT) {
|
|
sta->session_timeout_set = 1;
|
|
os_get_reltime(&sta->session_timeout);
|
|
sta->session_timeout.sec += session_timeout;
|
|
ap_sta_session_timeout(hapd, sta, session_timeout);
|
|
} else {
|
|
sta->session_timeout_set = 0;
|
|
ap_sta_no_session_timeout(hapd, sta);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
#ifdef CONFIG_PASN
|
|
#ifdef CONFIG_SAE
|
|
|
|
static int pasn_wd_handle_sae_commit(struct hostapd_data *hapd,
|
|
struct sta_info *sta,
|
|
struct wpabuf *wd)
|
|
{
|
|
struct pasn_data *pasn = sta->pasn;
|
|
const char *password;
|
|
const u8 *data;
|
|
size_t buf_len;
|
|
u16 res, alg, seq, status;
|
|
int groups[] = { pasn->group, 0 };
|
|
struct sae_pt *pt = NULL;
|
|
int ret;
|
|
|
|
if (!wd)
|
|
return -1;
|
|
|
|
data = wpabuf_head_u8(wd);
|
|
buf_len = wpabuf_len(wd);
|
|
|
|
if (buf_len < 6) {
|
|
wpa_printf(MSG_DEBUG, "PASN: SAE buffer too short. len=%lu",
|
|
buf_len);
|
|
return -1;
|
|
}
|
|
|
|
alg = WPA_GET_LE16(data);
|
|
seq = WPA_GET_LE16(data + 2);
|
|
status = WPA_GET_LE16(data + 4);
|
|
|
|
wpa_printf(MSG_DEBUG, "PASN: SAE commit: alg=%u, seq=%u, status=%u",
|
|
alg, seq, status);
|
|
|
|
if (alg != WLAN_AUTH_SAE || seq != 1 ||
|
|
status != WLAN_STATUS_SAE_HASH_TO_ELEMENT) {
|
|
wpa_printf(MSG_DEBUG, "PASN: Dropping peer SAE commit");
|
|
return -1;
|
|
}
|
|
|
|
sae_clear_data(&pasn->sae);
|
|
pasn->sae.state = SAE_NOTHING;
|
|
|
|
ret = sae_set_group(&pasn->sae, pasn->group);
|
|
if (ret) {
|
|
wpa_printf(MSG_DEBUG, "PASN: Failed to set SAE group");
|
|
return -1;
|
|
}
|
|
|
|
password = sae_get_password(hapd, sta, NULL, NULL, &pt, NULL);
|
|
if (!password || !pt) {
|
|
wpa_printf(MSG_DEBUG, "PASN: No SAE PT found");
|
|
return -1;
|
|
}
|
|
|
|
ret = sae_prepare_commit_pt(&pasn->sae, pt, hapd->own_addr, sta->addr,
|
|
NULL, NULL);
|
|
if (ret) {
|
|
wpa_printf(MSG_DEBUG, "PASN: Failed to prepare SAE commit");
|
|
return -1;
|
|
}
|
|
|
|
res = sae_parse_commit(&pasn->sae, data + 6, buf_len - 6, NULL, 0,
|
|
groups, 0);
|
|
if (res != WLAN_STATUS_SUCCESS) {
|
|
wpa_printf(MSG_DEBUG, "PASN: Failed parsing SAE commit");
|
|
return -1;
|
|
}
|
|
|
|
/* Process the commit message and derive the PMK */
|
|
ret = sae_process_commit(&pasn->sae);
|
|
if (ret) {
|
|
wpa_printf(MSG_DEBUG, "SAE: Failed to process peer commit");
|
|
return -1;
|
|
}
|
|
|
|
pasn->sae.state = SAE_COMMITTED;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int pasn_wd_handle_sae_confirm(struct hostapd_data *hapd,
|
|
struct sta_info *sta,
|
|
struct wpabuf *wd)
|
|
{
|
|
struct pasn_data *pasn = sta->pasn;
|
|
const u8 *data;
|
|
size_t buf_len;
|
|
u16 res, alg, seq, status;
|
|
|
|
if (!wd)
|
|
return -1;
|
|
|
|
data = wpabuf_head_u8(wd);
|
|
buf_len = wpabuf_len(wd);
|
|
|
|
if (buf_len < 6) {
|
|
wpa_printf(MSG_DEBUG, "PASN: SAE buffer too short. len=%lu",
|
|
buf_len);
|
|
return -1;
|
|
}
|
|
|
|
alg = WPA_GET_LE16(data);
|
|
seq = WPA_GET_LE16(data + 2);
|
|
status = WPA_GET_LE16(data + 4);
|
|
|
|
wpa_printf(MSG_DEBUG, "PASN: SAE confirm: alg=%u, seq=%u, status=%u",
|
|
alg, seq, status);
|
|
|
|
if (alg != WLAN_AUTH_SAE || seq != 2 || status != WLAN_STATUS_SUCCESS) {
|
|
wpa_printf(MSG_DEBUG, "PASN: Dropping peer SAE confirm");
|
|
return -1;
|
|
}
|
|
|
|
res = sae_check_confirm(&pasn->sae, data + 6, buf_len - 6);
|
|
if (res != WLAN_STATUS_SUCCESS) {
|
|
wpa_printf(MSG_DEBUG, "PASN: SAE failed checking confirm");
|
|
return -1;
|
|
}
|
|
|
|
pasn->sae.state = SAE_ACCEPTED;
|
|
|
|
/*
|
|
* TODO: Based on on IEEE P802.11az/D2.6, the PMKSA derived with
|
|
* PASN/SAE should only be allowed with future PASN only. For now do not
|
|
* restrict this only for PASN.
|
|
*/
|
|
wpa_auth_pmksa_add_sae(hapd->wpa_auth, sta->addr,
|
|
pasn->sae.pmk, pasn->sae.pmkid);
|
|
return 0;
|
|
}
|
|
|
|
|
|
static struct wpabuf * pasn_get_sae_wd(struct hostapd_data *hapd,
|
|
struct sta_info *sta)
|
|
{
|
|
struct pasn_data *pasn = sta->pasn;
|
|
struct wpabuf *buf = NULL;
|
|
u8 *len_ptr;
|
|
size_t len;
|
|
|
|
/* Need to add the entire Authentication frame body */
|
|
buf = wpabuf_alloc(8 + SAE_COMMIT_MAX_LEN + 8 + SAE_CONFIRM_MAX_LEN);
|
|
if (!buf) {
|
|
wpa_printf(MSG_DEBUG, "PASN: Failed to allocate SAE buffer");
|
|
return NULL;
|
|
}
|
|
|
|
/* Need to add the entire authentication frame body for the commit */
|
|
len_ptr = wpabuf_put(buf, 2);
|
|
wpabuf_put_le16(buf, WLAN_AUTH_SAE);
|
|
wpabuf_put_le16(buf, 1);
|
|
wpabuf_put_le16(buf, WLAN_STATUS_SAE_HASH_TO_ELEMENT);
|
|
|
|
/* Write the actual commit and update the length accordingly */
|
|
sae_write_commit(&pasn->sae, buf, NULL, 0);
|
|
len = wpabuf_len(buf);
|
|
WPA_PUT_LE16(len_ptr, len - 2);
|
|
|
|
/* Need to add the entire Authentication frame body for the confirm */
|
|
len_ptr = wpabuf_put(buf, 2);
|
|
wpabuf_put_le16(buf, WLAN_AUTH_SAE);
|
|
wpabuf_put_le16(buf, 2);
|
|
wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
|
|
|
|
sae_write_confirm(&pasn->sae, buf);
|
|
WPA_PUT_LE16(len_ptr, wpabuf_len(buf) - len - 2);
|
|
|
|
pasn->sae.state = SAE_CONFIRMED;
|
|
|
|
return buf;
|
|
}
|
|
|
|
#endif /* CONFIG_SAE */
|
|
|
|
|
|
#ifdef CONFIG_FILS
|
|
|
|
static struct wpabuf * pasn_get_fils_wd(struct hostapd_data *hapd,
|
|
struct sta_info *sta)
|
|
{
|
|
struct pasn_data *pasn = sta->pasn;
|
|
struct pasn_fils_data *fils = &pasn->fils;
|
|
struct wpabuf *buf = NULL;
|
|
|
|
if (!fils->erp_resp) {
|
|
wpa_printf(MSG_DEBUG, "PASN: FILS: Missing erp_resp");
|
|
return NULL;
|
|
}
|
|
|
|
buf = wpabuf_alloc(1500);
|
|
if (!buf)
|
|
return NULL;
|
|
|
|
/* Add the authentication algorithm */
|
|
wpabuf_put_le16(buf, WLAN_AUTH_FILS_SK);
|
|
|
|
/* Authentication Transaction seq# */
|
|
wpabuf_put_le16(buf, 2);
|
|
|
|
/* Status Code */
|
|
wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
|
|
|
|
/* Own RSNE */
|
|
wpa_pasn_add_rsne(buf, NULL, pasn->akmp, pasn->cipher);
|
|
|
|
/* FILS Nonce */
|
|
wpabuf_put_u8(buf, WLAN_EID_EXTENSION);
|
|
wpabuf_put_u8(buf, 1 + FILS_NONCE_LEN);
|
|
wpabuf_put_u8(buf, WLAN_EID_EXT_FILS_NONCE);
|
|
wpabuf_put_data(buf, fils->anonce, FILS_NONCE_LEN);
|
|
|
|
/* FILS Session */
|
|
wpabuf_put_u8(buf, WLAN_EID_EXTENSION);
|
|
wpabuf_put_u8(buf, 1 + FILS_SESSION_LEN);
|
|
wpabuf_put_u8(buf, WLAN_EID_EXT_FILS_SESSION);
|
|
wpabuf_put_data(buf, fils->session, FILS_SESSION_LEN);
|
|
|
|
/* Wrapped Data */
|
|
wpabuf_put_u8(buf, WLAN_EID_EXTENSION);
|
|
wpabuf_put_u8(buf, 1 + wpabuf_len(fils->erp_resp));
|
|
wpabuf_put_u8(buf, WLAN_EID_EXT_WRAPPED_DATA);
|
|
wpabuf_put_buf(buf, fils->erp_resp);
|
|
|
|
return buf;
|
|
}
|
|
|
|
|
|
static void pasn_fils_auth_resp(struct hostapd_data *hapd,
|
|
struct sta_info *sta, u16 status,
|
|
struct wpabuf *erp_resp,
|
|
const u8 *msk, size_t msk_len)
|
|
{
|
|
struct pasn_data *pasn = sta->pasn;
|
|
struct pasn_fils_data *fils = &pasn->fils;
|
|
u8 pmk[PMK_LEN_MAX];
|
|
size_t pmk_len;
|
|
int ret;
|
|
|
|
wpa_printf(MSG_DEBUG, "PASN: FILS: Handle AS response - status=%u",
|
|
status);
|
|
|
|
if (status != WLAN_STATUS_SUCCESS)
|
|
goto fail;
|
|
|
|
if (!pasn->secret) {
|
|
wpa_printf(MSG_DEBUG, "PASN: FILS: Missing secret");
|
|
goto fail;
|
|
}
|
|
|
|
if (random_get_bytes(fils->anonce, FILS_NONCE_LEN) < 0) {
|
|
wpa_printf(MSG_DEBUG, "PASN: FILS: Failed to get ANonce");
|
|
goto fail;
|
|
}
|
|
|
|
wpa_hexdump(MSG_DEBUG, "RSN: Generated FILS ANonce",
|
|
fils->anonce, FILS_NONCE_LEN);
|
|
|
|
ret = fils_rmsk_to_pmk(pasn->akmp, msk, msk_len, fils->nonce,
|
|
fils->anonce, NULL, 0, pmk, &pmk_len);
|
|
if (ret) {
|
|
wpa_printf(MSG_DEBUG, "FILS: Failed to derive PMK");
|
|
goto fail;
|
|
}
|
|
|
|
ret = pasn_pmk_to_ptk(pmk, pmk_len, sta->addr, hapd->own_addr,
|
|
wpabuf_head(pasn->secret),
|
|
wpabuf_len(pasn->secret),
|
|
&sta->pasn->ptk, sta->pasn->akmp,
|
|
sta->pasn->cipher, sta->pasn->kdk_len);
|
|
if (ret) {
|
|
wpa_printf(MSG_DEBUG, "PASN: FILS: Failed to derive PTK");
|
|
goto fail;
|
|
}
|
|
|
|
wpa_printf(MSG_DEBUG, "PASN: PTK successfully derived");
|
|
|
|
wpabuf_free(pasn->secret);
|
|
pasn->secret = NULL;
|
|
|
|
fils->erp_resp = erp_resp;
|
|
ret = handle_auth_pasn_resp(hapd, sta, NULL, WLAN_STATUS_SUCCESS);
|
|
fils->erp_resp = NULL;
|
|
|
|
if (ret) {
|
|
wpa_printf(MSG_DEBUG, "PASN: FILS: Failed to send response");
|
|
goto fail;
|
|
}
|
|
|
|
fils->state = PASN_FILS_STATE_COMPLETE;
|
|
return;
|
|
fail:
|
|
ap_free_sta(hapd, sta);
|
|
}
|
|
|
|
|
|
static int pasn_wd_handle_fils(struct hostapd_data *hapd, struct sta_info *sta,
|
|
struct wpabuf *wd)
|
|
{
|
|
#ifdef CONFIG_NO_RADIUS
|
|
wpa_printf(MSG_DEBUG, "PASN: FILS: RADIUS is not configured. Fail");
|
|
return -1;
|
|
#else /* CONFIG_NO_RADIUS */
|
|
struct pasn_data *pasn = sta->pasn;
|
|
struct pasn_fils_data *fils = &pasn->fils;
|
|
struct ieee802_11_elems elems;
|
|
struct wpa_ie_data rsne_data;
|
|
struct wpabuf *fils_wd;
|
|
const u8 *data;
|
|
size_t buf_len;
|
|
u16 alg, seq, status;
|
|
int ret;
|
|
|
|
if (fils->state != PASN_FILS_STATE_NONE) {
|
|
wpa_printf(MSG_DEBUG, "PASN: FILS: Not expecting wrapped data");
|
|
return -1;
|
|
}
|
|
|
|
if (!wd) {
|
|
wpa_printf(MSG_DEBUG, "PASN: FILS: No wrapped data");
|
|
return -1;
|
|
}
|
|
|
|
data = wpabuf_head_u8(wd);
|
|
buf_len = wpabuf_len(wd);
|
|
|
|
if (buf_len < 6) {
|
|
wpa_printf(MSG_DEBUG, "PASN: FILS: Buffer too short. len=%lu",
|
|
buf_len);
|
|
return -1;
|
|
}
|
|
|
|
alg = WPA_GET_LE16(data);
|
|
seq = WPA_GET_LE16(data + 2);
|
|
status = WPA_GET_LE16(data + 4);
|
|
|
|
wpa_printf(MSG_DEBUG, "PASN: FILS: alg=%u, seq=%u, status=%u",
|
|
alg, seq, status);
|
|
|
|
if (alg != WLAN_AUTH_FILS_SK || seq != 1 ||
|
|
status != WLAN_STATUS_SUCCESS) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"PASN: FILS: Dropping peer authentication");
|
|
return -1;
|
|
}
|
|
|
|
data += 6;
|
|
buf_len -= 6;
|
|
|
|
if (ieee802_11_parse_elems(data, buf_len, &elems, 1) == ParseFailed) {
|
|
wpa_printf(MSG_DEBUG, "PASN: FILS: Could not parse elements");
|
|
return -1;
|
|
}
|
|
|
|
if (!elems.rsn_ie || !elems.fils_nonce || !elems.fils_nonce ||
|
|
!elems.wrapped_data) {
|
|
wpa_printf(MSG_DEBUG, "PASN: FILS: Missing IEs");
|
|
return -1;
|
|
}
|
|
|
|
ret = wpa_parse_wpa_ie_rsn(elems.rsn_ie - 2, elems.rsn_ie_len + 2,
|
|
&rsne_data);
|
|
if (ret) {
|
|
wpa_printf(MSG_DEBUG, "PASN: FILS: Failed parsing RNSE");
|
|
return -1;
|
|
}
|
|
|
|
ret = wpa_pasn_validate_rsne(&rsne_data);
|
|
if (ret) {
|
|
wpa_printf(MSG_DEBUG, "PASN: FILS: Failed validating RSNE");
|
|
return -1;
|
|
}
|
|
|
|
if (rsne_data.num_pmkid) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"PASN: FILS: Not expecting PMKID in RSNE");
|
|
return -1;
|
|
}
|
|
|
|
wpa_hexdump(MSG_DEBUG, "PASN: FILS: Nonce", elems.fils_nonce,
|
|
FILS_NONCE_LEN);
|
|
os_memcpy(fils->nonce, elems.fils_nonce, FILS_NONCE_LEN);
|
|
|
|
wpa_hexdump(MSG_DEBUG, "PASN: FILS: Session", elems.fils_session,
|
|
FILS_SESSION_LEN);
|
|
os_memcpy(fils->session, elems.fils_session, FILS_SESSION_LEN);
|
|
|
|
fils_wd = ieee802_11_defrag(&elems, WLAN_EID_EXTENSION,
|
|
WLAN_EID_EXT_WRAPPED_DATA);
|
|
|
|
if (!fils_wd) {
|
|
wpa_printf(MSG_DEBUG, "PASN: FILS: Missing wrapped data");
|
|
return -1;
|
|
}
|
|
|
|
if (!sta->eapol_sm)
|
|
sta->eapol_sm = ieee802_1x_alloc_eapol_sm(hapd, sta);
|
|
|
|
wpa_printf(MSG_DEBUG,
|
|
"PASN: FILS: Forward EAP-Initiate/Re-auth to AS");
|
|
|
|
ieee802_1x_encapsulate_radius(hapd, sta, wpabuf_head(fils_wd),
|
|
wpabuf_len(fils_wd));
|
|
|
|
sta->flags |= WLAN_STA_PENDING_PASN_FILS_ERP;
|
|
|
|
fils->state = PASN_FILS_STATE_PENDING_AS;
|
|
|
|
/*
|
|
* Calculate pending PMKID here so that we do not need to maintain a
|
|
* copy of the EAP-Initiate/Reautt message.
|
|
*/
|
|
fils_pmkid_erp(pasn->akmp, wpabuf_head(fils_wd), wpabuf_len(fils_wd),
|
|
fils->erp_pmkid);
|
|
|
|
wpabuf_free(fils_wd);
|
|
return 0;
|
|
#endif /* CONFIG_NO_RADIUS */
|
|
}
|
|
|
|
#endif /* CONFIG_FILS */
|
|
|
|
|
|
static struct wpabuf * pasn_get_wrapped_data(struct hostapd_data *hapd,
|
|
struct sta_info *sta)
|
|
{
|
|
switch (sta->pasn->akmp) {
|
|
case WPA_KEY_MGMT_PASN:
|
|
/* no wrapped data */
|
|
return NULL;
|
|
case WPA_KEY_MGMT_SAE:
|
|
#ifdef CONFIG_SAE
|
|
return pasn_get_sae_wd(hapd, sta);
|
|
#else /* CONFIG_SAE */
|
|
wpa_printf(MSG_ERROR,
|
|
"PASN: SAE: Cannot derive wrapped data");
|
|
return NULL;
|
|
#endif /* CONFIG_SAE */
|
|
case WPA_KEY_MGMT_FILS_SHA256:
|
|
case WPA_KEY_MGMT_FILS_SHA384:
|
|
#ifdef CONFIG_FILS
|
|
return pasn_get_fils_wd(hapd, sta);
|
|
#endif /* CONFIG_FILS */
|
|
/* fall through */
|
|
case WPA_KEY_MGMT_FT_PSK:
|
|
case WPA_KEY_MGMT_FT_IEEE8021X:
|
|
case WPA_KEY_MGMT_FT_IEEE8021X_SHA384:
|
|
default:
|
|
wpa_printf(MSG_ERROR,
|
|
"PASN: TODO: Wrapped data for akmp=0x%x",
|
|
sta->pasn->akmp);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
|
|
static int
|
|
pasn_derive_keys(struct hostapd_data *hapd, struct sta_info *sta,
|
|
const u8 *cached_pmk, size_t cached_pmk_len,
|
|
struct wpa_pasn_params_data *pasn_data,
|
|
struct wpabuf *wrapped_data,
|
|
struct wpabuf *secret)
|
|
{
|
|
static const u8 pasn_default_pmk[] = {'P', 'M', 'K', 'z'};
|
|
u8 pmk[PMK_LEN_MAX];
|
|
u8 pmk_len;
|
|
int ret;
|
|
|
|
os_memset(pmk, 0, sizeof(pmk));
|
|
pmk_len = 0;
|
|
|
|
if (!cached_pmk || !cached_pmk_len)
|
|
wpa_printf(MSG_DEBUG, "PASN: No valid PMKSA entry");
|
|
|
|
if (sta->pasn->akmp == WPA_KEY_MGMT_PASN) {
|
|
wpa_printf(MSG_DEBUG, "PASN: Using default PMK");
|
|
|
|
pmk_len = WPA_PASN_PMK_LEN;
|
|
os_memcpy(pmk, pasn_default_pmk, sizeof(pasn_default_pmk));
|
|
} else if (cached_pmk && cached_pmk_len) {
|
|
wpa_printf(MSG_DEBUG, "PASN: Using PMKSA entry");
|
|
|
|
pmk_len = cached_pmk_len;
|
|
os_memcpy(pmk, cached_pmk, cached_pmk_len);
|
|
} else {
|
|
switch (sta->pasn->akmp) {
|
|
#ifdef CONFIG_SAE
|
|
case WPA_KEY_MGMT_SAE:
|
|
if (sta->pasn->sae.state == SAE_COMMITTED) {
|
|
pmk_len = PMK_LEN;
|
|
os_memcpy(pmk, sta->pasn->sae.pmk, PMK_LEN);
|
|
break;
|
|
}
|
|
#endif /* CONFIG_SAE */
|
|
/* fall through */
|
|
default:
|
|
/* TODO: Derive PMK based on wrapped data */
|
|
wpa_printf(MSG_DEBUG,
|
|
"PASN: Missing PMK derivation");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
ret = pasn_pmk_to_ptk(pmk, pmk_len, sta->addr, hapd->own_addr,
|
|
wpabuf_head(secret), wpabuf_len(secret),
|
|
&sta->pasn->ptk, sta->pasn->akmp,
|
|
sta->pasn->cipher, sta->pasn->kdk_len);
|
|
if (ret) {
|
|
wpa_printf(MSG_DEBUG, "PASN: Failed to derive PTK");
|
|
return -1;
|
|
}
|
|
|
|
wpa_printf(MSG_DEBUG, "PASN: PTK successfully derived");
|
|
return 0;
|
|
}
|
|
|
|
|
|
static void handle_auth_pasn_comeback(struct hostapd_data *hapd,
|
|
struct sta_info *sta, u16 group)
|
|
{
|
|
struct wpabuf *buf, *comeback;
|
|
int ret;
|
|
|
|
wpa_printf(MSG_DEBUG,
|
|
"PASN: Building comeback frame 2. Comeback after=%u",
|
|
hapd->conf->pasn_comeback_after);
|
|
|
|
buf = wpabuf_alloc(1500);
|
|
if (!buf)
|
|
return;
|
|
|
|
wpa_pasn_build_auth_header(buf, hapd->own_addr, hapd->own_addr,
|
|
sta->addr, 2,
|
|
WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY);
|
|
|
|
/*
|
|
* Do not include the group as a part of the token since it is not going
|
|
* to be used.
|
|
*/
|
|
comeback = auth_build_token_req(hapd, 0, sta->addr, 0);
|
|
if (!comeback) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"PASN: Failed sending auth with comeback");
|
|
wpabuf_free(buf);
|
|
return;
|
|
}
|
|
|
|
wpa_pasn_add_parameter_ie(buf, group,
|
|
WPA_PASN_WRAPPED_DATA_NO,
|
|
NULL, 0, comeback,
|
|
hapd->conf->pasn_comeback_after);
|
|
wpabuf_free(comeback);
|
|
|
|
wpa_printf(MSG_DEBUG,
|
|
"PASN: comeback: STA=" MACSTR, MAC2STR(sta->addr));
|
|
|
|
ret = hostapd_drv_send_mlme(hapd, wpabuf_head(buf), wpabuf_len(buf), 0,
|
|
NULL, 0, 0);
|
|
if (ret)
|
|
wpa_printf(MSG_INFO, "PASN: Failed to send comeback frame 2");
|
|
|
|
wpabuf_free(buf);
|
|
}
|
|
|
|
|
|
static int handle_auth_pasn_resp(struct hostapd_data *hapd,
|
|
struct sta_info *sta,
|
|
struct rsn_pmksa_cache_entry *pmksa,
|
|
u16 status)
|
|
{
|
|
struct wpabuf *buf, *pubkey = NULL, *wrapped_data_buf = NULL;
|
|
u8 mic[WPA_PASN_MAX_MIC_LEN];
|
|
u8 mic_len;
|
|
u8 *ptr;
|
|
const u8 *frame, *data, *rsn_ie, *rsnxe_ie;
|
|
u8 *data_buf = NULL;
|
|
size_t rsn_ie_len, frame_len, data_len;
|
|
int ret;
|
|
const u8 *pmkid = NULL;
|
|
|
|
wpa_printf(MSG_DEBUG, "PASN: Building frame 2: status=%u", status);
|
|
|
|
buf = wpabuf_alloc(1500);
|
|
if (!buf)
|
|
goto fail;
|
|
|
|
wpa_pasn_build_auth_header(buf, hapd->own_addr, hapd->own_addr,
|
|
sta->addr, 2, status);
|
|
|
|
if (status != WLAN_STATUS_SUCCESS)
|
|
goto done;
|
|
|
|
if (pmksa) {
|
|
pmkid = pmksa->pmkid;
|
|
#ifdef CONFIG_SAE
|
|
} else if (sta->pasn->akmp == WPA_KEY_MGMT_SAE) {
|
|
wpa_printf(MSG_DEBUG, "PASN: Use SAE PMKID");
|
|
pmkid = sta->pasn->sae.pmkid;
|
|
#endif /* CONFIG_SAE */
|
|
#ifdef CONFIG_FILS
|
|
} else if (sta->pasn->akmp == WPA_KEY_MGMT_FILS_SHA256 ||
|
|
sta->pasn->akmp == WPA_KEY_MGMT_FILS_SHA384) {
|
|
wpa_printf(MSG_DEBUG, "PASN: Use FILS ERP PMKID");
|
|
pmkid = sta->pasn->fils.erp_pmkid;
|
|
#endif /* CONFIG_FILS */
|
|
}
|
|
|
|
if (wpa_pasn_add_rsne(buf, pmkid,
|
|
sta->pasn->akmp, sta->pasn->cipher) < 0)
|
|
goto fail;
|
|
|
|
/* No need to derive PMK if PMKSA is given */
|
|
if (!pmksa)
|
|
wrapped_data_buf = pasn_get_wrapped_data(hapd, sta);
|
|
else
|
|
sta->pasn->wrapped_data_format = WPA_PASN_WRAPPED_DATA_NO;
|
|
|
|
/* Get public key */
|
|
pubkey = crypto_ecdh_get_pubkey(sta->pasn->ecdh, 0);
|
|
pubkey = wpabuf_zeropad(pubkey,
|
|
crypto_ecdh_prime_len(sta->pasn->ecdh));
|
|
if (!pubkey) {
|
|
wpa_printf(MSG_DEBUG, "PASN: Failed to get pubkey");
|
|
goto fail;
|
|
}
|
|
|
|
wpa_pasn_add_parameter_ie(buf, sta->pasn->group,
|
|
sta->pasn->wrapped_data_format,
|
|
pubkey, true, NULL, 0);
|
|
|
|
if (wpa_pasn_add_wrapped_data(buf, wrapped_data_buf) < 0)
|
|
goto fail;
|
|
|
|
wpabuf_free(wrapped_data_buf);
|
|
wrapped_data_buf = NULL;
|
|
wpabuf_free(pubkey);
|
|
pubkey = NULL;
|
|
|
|
/* Add RSNXE if needed */
|
|
rsnxe_ie = hostapd_wpa_ie(hapd, WLAN_EID_RSNX);
|
|
if (rsnxe_ie)
|
|
wpabuf_put_data(buf, rsnxe_ie, 2 + rsnxe_ie[1]);
|
|
|
|
/* Add the mic */
|
|
mic_len = pasn_mic_len(sta->pasn->akmp, sta->pasn->cipher);
|
|
wpabuf_put_u8(buf, WLAN_EID_MIC);
|
|
wpabuf_put_u8(buf, mic_len);
|
|
ptr = wpabuf_put(buf, mic_len);
|
|
|
|
os_memset(ptr, 0, mic_len);
|
|
|
|
frame = wpabuf_head_u8(buf) + IEEE80211_HDRLEN;
|
|
frame_len = wpabuf_len(buf) - IEEE80211_HDRLEN;
|
|
|
|
rsn_ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &rsn_ie_len);
|
|
if (!rsn_ie || !rsn_ie_len)
|
|
goto fail;
|
|
|
|
/*
|
|
* Note: wpa_auth_get_wpa_ie() might return not only the RSNE but also
|
|
* MDE, etc. Thus, do not use the returned length but instead use the
|
|
* length specified in the IE header.
|
|
*/
|
|
data_len = rsn_ie[1] + 2;
|
|
if (rsnxe_ie) {
|
|
data_buf = os_zalloc(rsn_ie[1] + 2 + rsnxe_ie[1] + 2);
|
|
if (!data_buf)
|
|
goto fail;
|
|
|
|
os_memcpy(data_buf, rsn_ie, rsn_ie[1] + 2);
|
|
os_memcpy(data_buf + rsn_ie[1] + 2, rsnxe_ie, rsnxe_ie[1] + 2);
|
|
data_len += rsnxe_ie[1] + 2;
|
|
data = data_buf;
|
|
} else {
|
|
data = rsn_ie;
|
|
}
|
|
|
|
ret = pasn_mic(sta->pasn->ptk.kck, sta->pasn->akmp, sta->pasn->cipher,
|
|
hapd->own_addr, sta->addr, data, data_len,
|
|
frame, frame_len, mic);
|
|
os_free(data_buf);
|
|
if (ret) {
|
|
wpa_printf(MSG_DEBUG, "PASN: Frame 3: Failed MIC calculation");
|
|
goto fail;
|
|
}
|
|
|
|
#ifdef CONFIG_TESTING_OPTIONS
|
|
if (hapd->conf->pasn_corrupt_mic) {
|
|
wpa_printf(MSG_DEBUG, "PASN: frame 2: Corrupt MIC");
|
|
mic[0] = ~mic[0];
|
|
}
|
|
#endif /* CONFIG_TESTING_OPTIONS */
|
|
|
|
os_memcpy(ptr, mic, mic_len);
|
|
|
|
done:
|
|
wpa_printf(MSG_DEBUG,
|
|
"PASN: Building frame 2: success; resp STA=" MACSTR,
|
|
MAC2STR(sta->addr));
|
|
|
|
ret = hostapd_drv_send_mlme(hapd, wpabuf_head(buf), wpabuf_len(buf), 0,
|
|
NULL, 0, 0);
|
|
if (ret)
|
|
wpa_printf(MSG_INFO, "send_auth_reply: Send failed");
|
|
|
|
wpabuf_free(buf);
|
|
return ret;
|
|
fail:
|
|
wpabuf_free(wrapped_data_buf);
|
|
wpabuf_free(pubkey);
|
|
wpabuf_free(buf);
|
|
return -1;
|
|
}
|
|
|
|
|
|
static void handle_auth_pasn_1(struct hostapd_data *hapd, struct sta_info *sta,
|
|
const struct ieee80211_mgmt *mgmt, size_t len)
|
|
{
|
|
struct ieee802_11_elems elems;
|
|
struct wpa_ie_data rsn_data;
|
|
struct wpa_pasn_params_data pasn_params;
|
|
struct rsn_pmksa_cache_entry *pmksa = NULL;
|
|
const u8 *cached_pmk = NULL;
|
|
size_t cached_pmk_len = 0;
|
|
#ifdef CONFIG_IEEE80211R_AP
|
|
u8 pmk_r1[PMK_LEN_MAX];
|
|
size_t pmk_r1_len;
|
|
#endif /* CONFIG_IEEE80211R_AP */
|
|
struct wpabuf *wrapped_data = NULL, *secret = NULL;
|
|
const int *groups = hapd->conf->pasn_groups;
|
|
static const int default_groups[] = { 19, 0 };
|
|
u16 status = WLAN_STATUS_SUCCESS;
|
|
int ret, inc_y;
|
|
bool derive_keys;
|
|
u32 i;
|
|
|
|
if (!groups)
|
|
groups = default_groups;
|
|
|
|
if (ieee802_11_parse_elems(mgmt->u.auth.variable,
|
|
len - offsetof(struct ieee80211_mgmt,
|
|
u.auth.variable),
|
|
&elems, 0) == ParseFailed) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"PASN: Failed parsing Authentication frame");
|
|
status = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto send_resp;
|
|
}
|
|
|
|
ret = wpa_parse_wpa_ie_rsn(elems.rsn_ie - 2, elems.rsn_ie_len + 2,
|
|
&rsn_data);
|
|
if (ret) {
|
|
wpa_printf(MSG_DEBUG, "PASN: Failed parsing RNSE");
|
|
status = WLAN_STATUS_INVALID_RSNIE;
|
|
goto send_resp;
|
|
}
|
|
|
|
ret = wpa_pasn_validate_rsne(&rsn_data);
|
|
if (ret) {
|
|
wpa_printf(MSG_DEBUG, "PASN: Failed validating RSNE");
|
|
status = WLAN_STATUS_INVALID_RSNIE;
|
|
goto send_resp;
|
|
}
|
|
|
|
if (!(rsn_data.key_mgmt & hapd->conf->wpa_key_mgmt) ||
|
|
!(rsn_data.pairwise_cipher & hapd->conf->rsn_pairwise)) {
|
|
wpa_printf(MSG_DEBUG, "PASN: Mismatch in AKMP/cipher");
|
|
status = WLAN_STATUS_INVALID_RSNIE;
|
|
goto send_resp;
|
|
}
|
|
|
|
sta->pasn->akmp = rsn_data.key_mgmt;
|
|
sta->pasn->cipher = rsn_data.pairwise_cipher;
|
|
|
|
if (hapd->conf->force_kdk_derivation ||
|
|
((hapd->iface->drv_flags2 & WPA_DRIVER_FLAGS2_SEC_LTF) &&
|
|
ieee802_11_rsnx_capab_len(elems.rsnxe, elems.rsnxe_len,
|
|
WLAN_RSNX_CAPAB_SECURE_LTF)))
|
|
sta->pasn->kdk_len = WPA_KDK_MAX_LEN;
|
|
else
|
|
sta->pasn->kdk_len = 0;
|
|
wpa_printf(MSG_DEBUG, "PASN: kdk_len=%zu", sta->pasn->kdk_len);
|
|
|
|
if (!elems.pasn_params || !elems.pasn_params_len) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"PASN: No PASN Parameters element found");
|
|
status = WLAN_STATUS_INVALID_PARAMETERS;
|
|
goto send_resp;
|
|
}
|
|
|
|
ret = wpa_pasn_parse_parameter_ie(elems.pasn_params - 3,
|
|
elems.pasn_params_len + 3,
|
|
false, &pasn_params);
|
|
if (ret) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"PASN: Failed validation of PASN Parameters IE");
|
|
status = WLAN_STATUS_INVALID_PARAMETERS;
|
|
goto send_resp;
|
|
}
|
|
|
|
for (i = 0; groups[i] > 0 && groups[i] != pasn_params.group; i++)
|
|
;
|
|
|
|
if (!pasn_params.group || groups[i] != pasn_params.group) {
|
|
wpa_printf(MSG_DEBUG, "PASN: Requested group=%hu not allowed",
|
|
pasn_params.group);
|
|
status = WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED;
|
|
goto send_resp;
|
|
}
|
|
|
|
if (!pasn_params.pubkey || !pasn_params.pubkey_len) {
|
|
wpa_printf(MSG_DEBUG, "PASN: Invalid public key");
|
|
status = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto send_resp;
|
|
}
|
|
|
|
if (pasn_params.comeback) {
|
|
wpa_printf(MSG_DEBUG, "PASN: Checking peer comeback token");
|
|
|
|
ret = check_comeback_token(hapd, sta->addr,
|
|
pasn_params.comeback,
|
|
pasn_params.comeback_len);
|
|
|
|
if (ret) {
|
|
wpa_printf(MSG_DEBUG, "PASN: Invalid comeback token");
|
|
status = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto send_resp;
|
|
}
|
|
} else if (use_anti_clogging(hapd)) {
|
|
wpa_printf(MSG_DEBUG, "PASN: Respond with comeback");
|
|
handle_auth_pasn_comeback(hapd, sta, pasn_params.group);
|
|
ap_free_sta(hapd, sta);
|
|
return;
|
|
}
|
|
|
|
sta->pasn->ecdh = crypto_ecdh_init(pasn_params.group);
|
|
if (!sta->pasn->ecdh) {
|
|
wpa_printf(MSG_DEBUG, "PASN: Failed to init ECDH");
|
|
status = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto send_resp;
|
|
}
|
|
|
|
sta->pasn->group = pasn_params.group;
|
|
|
|
if (pasn_params.pubkey[0] == WPA_PASN_PUBKEY_UNCOMPRESSED) {
|
|
inc_y = 1;
|
|
} else if (pasn_params.pubkey[0] == WPA_PASN_PUBKEY_COMPRESSED_0 ||
|
|
pasn_params.pubkey[0] == WPA_PASN_PUBKEY_COMPRESSED_1) {
|
|
inc_y = 0;
|
|
} else {
|
|
wpa_printf(MSG_DEBUG,
|
|
"PASN: Invalid first octet in pubkey=0x%x",
|
|
pasn_params.pubkey[0]);
|
|
status = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto send_resp;
|
|
}
|
|
|
|
secret = crypto_ecdh_set_peerkey(sta->pasn->ecdh, inc_y,
|
|
pasn_params.pubkey + 1,
|
|
pasn_params.pubkey_len - 1);
|
|
if (!secret) {
|
|
wpa_printf(MSG_DEBUG, "PASN: Failed to derive shared secret");
|
|
status = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto send_resp;
|
|
}
|
|
|
|
derive_keys = true;
|
|
if (pasn_params.wrapped_data_format != WPA_PASN_WRAPPED_DATA_NO) {
|
|
wrapped_data = ieee802_11_defrag(&elems,
|
|
WLAN_EID_EXTENSION,
|
|
WLAN_EID_EXT_WRAPPED_DATA);
|
|
if (!wrapped_data) {
|
|
wpa_printf(MSG_DEBUG, "PASN: Missing wrapped data");
|
|
status = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto send_resp;
|
|
}
|
|
|
|
#ifdef CONFIG_SAE
|
|
if (sta->pasn->akmp == WPA_KEY_MGMT_SAE) {
|
|
ret = pasn_wd_handle_sae_commit(hapd, sta,
|
|
wrapped_data);
|
|
if (ret) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"PASN: Failed processing SAE commit");
|
|
status = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto send_resp;
|
|
}
|
|
}
|
|
#endif /* CONFIG_SAE */
|
|
#ifdef CONFIG_FILS
|
|
if (sta->pasn->akmp == WPA_KEY_MGMT_FILS_SHA256 ||
|
|
sta->pasn->akmp == WPA_KEY_MGMT_FILS_SHA384) {
|
|
ret = pasn_wd_handle_fils(hapd, sta, wrapped_data);
|
|
if (ret) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"PASN: Failed processing FILS wrapped data");
|
|
status = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto send_resp;
|
|
}
|
|
|
|
wpa_printf(MSG_DEBUG,
|
|
"PASN: FILS: Pending AS response");
|
|
|
|
/*
|
|
* With PASN/FILS, keys can be derived only after a
|
|
* response from the AS is processed.
|
|
*/
|
|
derive_keys = false;
|
|
}
|
|
#endif /* CONFIG_FILS */
|
|
}
|
|
|
|
sta->pasn->wrapped_data_format = pasn_params.wrapped_data_format;
|
|
|
|
ret = pasn_auth_frame_hash(sta->pasn->akmp, sta->pasn->cipher,
|
|
((const u8 *) mgmt) + IEEE80211_HDRLEN,
|
|
len - IEEE80211_HDRLEN, sta->pasn->hash);
|
|
if (ret) {
|
|
wpa_printf(MSG_DEBUG, "PASN: Failed to compute hash");
|
|
status = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto send_resp;
|
|
}
|
|
|
|
if (!derive_keys) {
|
|
wpa_printf(MSG_DEBUG, "PASN: Storing secret");
|
|
sta->pasn->secret = secret;
|
|
wpabuf_free(wrapped_data);
|
|
return;
|
|
}
|
|
|
|
if (rsn_data.num_pmkid) {
|
|
if (wpa_key_mgmt_ft(sta->pasn->akmp)) {
|
|
#ifdef CONFIG_IEEE80211R_AP
|
|
wpa_printf(MSG_DEBUG, "PASN: FT: Fetch PMK-R1");
|
|
|
|
ret = wpa_ft_fetch_pmk_r1(hapd->wpa_auth, sta->addr,
|
|
rsn_data.pmkid,
|
|
pmk_r1, &pmk_r1_len, NULL,
|
|
NULL, NULL, NULL,
|
|
NULL, NULL, NULL);
|
|
if (ret) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"PASN: FT: Failed getting PMK-R1");
|
|
status = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto send_resp;
|
|
}
|
|
cached_pmk = pmk_r1;
|
|
cached_pmk_len = pmk_r1_len;
|
|
#else /* CONFIG_IEEE80211R_AP */
|
|
wpa_printf(MSG_DEBUG, "PASN: FT: Not supported");
|
|
status = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto send_resp;
|
|
#endif /* CONFIG_IEEE80211R_AP */
|
|
} else {
|
|
wpa_printf(MSG_DEBUG, "PASN: Try to find PMKSA entry");
|
|
|
|
pmksa = wpa_auth_pmksa_get(hapd->wpa_auth, sta->addr,
|
|
rsn_data.pmkid);
|
|
if (pmksa) {
|
|
cached_pmk = pmksa->pmk;
|
|
cached_pmk_len = pmksa->pmk_len;
|
|
}
|
|
}
|
|
} else {
|
|
wpa_printf(MSG_DEBUG, "PASN: No PMKID specified");
|
|
}
|
|
|
|
ret = pasn_derive_keys(hapd, sta, cached_pmk, cached_pmk_len,
|
|
&pasn_params, wrapped_data, secret);
|
|
if (ret) {
|
|
wpa_printf(MSG_DEBUG, "PASN: Failed to derive keys");
|
|
status = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto send_resp;
|
|
}
|
|
|
|
ret = pasn_auth_frame_hash(sta->pasn->akmp, sta->pasn->cipher,
|
|
((const u8 *) mgmt) + IEEE80211_HDRLEN,
|
|
len - IEEE80211_HDRLEN, sta->pasn->hash);
|
|
if (ret) {
|
|
wpa_printf(MSG_DEBUG, "PASN: Failed to compute hash");
|
|
status = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
}
|
|
|
|
send_resp:
|
|
ret = handle_auth_pasn_resp(hapd, sta, pmksa, status);
|
|
if (ret) {
|
|
wpa_printf(MSG_DEBUG, "PASN: Failed to send response");
|
|
status = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
} else {
|
|
wpa_printf(MSG_DEBUG,
|
|
"PASN: Success handling transaction == 1");
|
|
}
|
|
|
|
wpabuf_free(secret);
|
|
wpabuf_free(wrapped_data);
|
|
|
|
if (status != WLAN_STATUS_SUCCESS)
|
|
ap_free_sta(hapd, sta);
|
|
}
|
|
|
|
|
|
static void handle_auth_pasn_3(struct hostapd_data *hapd, struct sta_info *sta,
|
|
const struct ieee80211_mgmt *mgmt, size_t len)
|
|
{
|
|
struct ieee802_11_elems elems;
|
|
struct wpa_pasn_params_data pasn_params;
|
|
struct wpabuf *wrapped_data = NULL;
|
|
u8 mic[WPA_PASN_MAX_MIC_LEN], out_mic[WPA_PASN_MAX_MIC_LEN];
|
|
u8 mic_len;
|
|
int ret;
|
|
|
|
if (ieee802_11_parse_elems(mgmt->u.auth.variable,
|
|
len - offsetof(struct ieee80211_mgmt,
|
|
u.auth.variable),
|
|
&elems, 0) == ParseFailed) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"PASN: Failed parsing Authentication frame");
|
|
goto fail;
|
|
}
|
|
|
|
/* Check that the MIC IE exists. Save it and zero out the memory. */
|
|
mic_len = pasn_mic_len(sta->pasn->akmp, sta->pasn->cipher);
|
|
if (!elems.mic || elems.mic_len != mic_len) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"PASN: Invalid MIC. Expecting len=%u", mic_len);
|
|
goto fail;
|
|
} else {
|
|
os_memcpy(mic, elems.mic, mic_len);
|
|
/* TODO: Clean this up.. Should not modify received frame
|
|
* buffer. */
|
|
os_memset((u8 *) elems.mic, 0, mic_len);
|
|
}
|
|
|
|
if (!elems.pasn_params || !elems.pasn_params_len) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"PASN: No PASN Parameters element found");
|
|
goto fail;
|
|
}
|
|
|
|
ret = wpa_pasn_parse_parameter_ie(elems.pasn_params - 3,
|
|
elems.pasn_params_len + 3,
|
|
false, &pasn_params);
|
|
if (ret) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"PASN: Failed validation of PASN Parameters IE");
|
|
goto fail;
|
|
}
|
|
|
|
if (pasn_params.pubkey || pasn_params.pubkey_len) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"PASN: Public key should not be included");
|
|
goto fail;
|
|
}
|
|
|
|
/* Verify the MIC */
|
|
ret = pasn_mic(sta->pasn->ptk.kck, sta->pasn->akmp, sta->pasn->cipher,
|
|
sta->addr, hapd->own_addr,
|
|
sta->pasn->hash, mic_len * 2,
|
|
(u8 *) &mgmt->u.auth,
|
|
len - offsetof(struct ieee80211_mgmt, u.auth),
|
|
out_mic);
|
|
|
|
wpa_hexdump_key(MSG_DEBUG, "PASN: Frame MIC", mic, mic_len);
|
|
if (ret || os_memcmp(mic, out_mic, mic_len) != 0) {
|
|
wpa_printf(MSG_DEBUG, "PASN: Failed MIC verification");
|
|
goto fail;
|
|
}
|
|
|
|
if (pasn_params.wrapped_data_format != WPA_PASN_WRAPPED_DATA_NO) {
|
|
wrapped_data = ieee802_11_defrag(&elems,
|
|
WLAN_EID_EXTENSION,
|
|
WLAN_EID_EXT_WRAPPED_DATA);
|
|
|
|
if (!wrapped_data) {
|
|
wpa_printf(MSG_DEBUG, "PASN: Missing wrapped data");
|
|
goto fail;
|
|
}
|
|
|
|
#ifdef CONFIG_SAE
|
|
if (sta->pasn->akmp == WPA_KEY_MGMT_SAE) {
|
|
ret = pasn_wd_handle_sae_confirm(hapd, sta,
|
|
wrapped_data);
|
|
if (ret) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"PASN: Failed processing SAE confirm");
|
|
wpabuf_free(wrapped_data);
|
|
goto fail;
|
|
}
|
|
}
|
|
#endif /* CONFIG_SAE */
|
|
#ifdef CONFIG_FILS
|
|
if (sta->pasn->akmp == WPA_KEY_MGMT_FILS_SHA256 ||
|
|
sta->pasn->akmp == WPA_KEY_MGMT_FILS_SHA384) {
|
|
if (wrapped_data) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"PASN: FILS: Ignore wrapped data");
|
|
}
|
|
}
|
|
#endif /* CONFIG_FILS */
|
|
wpabuf_free(wrapped_data);
|
|
}
|
|
|
|
wpa_printf(MSG_INFO,
|
|
"PASN: Success handling transaction == 3. Store PTK");
|
|
|
|
ptksa_cache_add(hapd->ptksa, sta->addr, sta->pasn->cipher, 43200,
|
|
&sta->pasn->ptk);
|
|
fail:
|
|
ap_free_sta(hapd, sta);
|
|
}
|
|
|
|
|
|
static void handle_auth_pasn(struct hostapd_data *hapd, struct sta_info *sta,
|
|
const struct ieee80211_mgmt *mgmt, size_t len,
|
|
u16 trans_seq, u16 status)
|
|
{
|
|
if (hapd->conf->wpa != WPA_PROTO_RSN) {
|
|
wpa_printf(MSG_INFO, "PASN: RSN is not configured");
|
|
return;
|
|
}
|
|
|
|
wpa_printf(MSG_INFO, "PASN authentication: sta=" MACSTR,
|
|
MAC2STR(sta->addr));
|
|
|
|
if (trans_seq == 1) {
|
|
if (sta->pasn) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"PASN: Not expecting transaction == 1");
|
|
return;
|
|
}
|
|
|
|
if (status != WLAN_STATUS_SUCCESS) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"PASN: Failure status in transaction == 1");
|
|
return;
|
|
}
|
|
|
|
sta->pasn = os_zalloc(sizeof(*sta->pasn));
|
|
if (!sta->pasn) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"PASN: Failed to allocate PASN context");
|
|
return;
|
|
}
|
|
|
|
handle_auth_pasn_1(hapd, sta, mgmt, len);
|
|
} else if (trans_seq == 3) {
|
|
if (!sta->pasn) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"PASN: Not expecting transaction == 3");
|
|
return;
|
|
}
|
|
|
|
if (status != WLAN_STATUS_SUCCESS) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"PASN: Failure status in transaction == 3");
|
|
ap_free_sta_pasn(hapd, sta);
|
|
return;
|
|
}
|
|
|
|
handle_auth_pasn_3(hapd, sta, mgmt, len);
|
|
} else {
|
|
wpa_printf(MSG_DEBUG,
|
|
"PASN: Invalid transaction %u - ignore", trans_seq);
|
|
}
|
|
}
|
|
|
|
#endif /* CONFIG_PASN */
|
|
|
|
|
|
static void handle_auth(struct hostapd_data *hapd,
|
|
const struct ieee80211_mgmt *mgmt, size_t len,
|
|
int rssi, int from_queue)
|
|
{
|
|
u16 auth_alg, auth_transaction, status_code;
|
|
u16 resp = WLAN_STATUS_SUCCESS;
|
|
struct sta_info *sta = NULL;
|
|
int res, reply_res;
|
|
u16 fc;
|
|
const u8 *challenge = NULL;
|
|
u8 resp_ies[2 + WLAN_AUTH_CHALLENGE_LEN];
|
|
size_t resp_ies_len = 0;
|
|
u16 seq_ctrl;
|
|
struct radius_sta rad_info;
|
|
|
|
if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
|
|
wpa_printf(MSG_INFO, "handle_auth - too short payload (len=%lu)",
|
|
(unsigned long) len);
|
|
return;
|
|
}
|
|
|
|
#ifdef CONFIG_TESTING_OPTIONS
|
|
if (hapd->iconf->ignore_auth_probability > 0.0 &&
|
|
drand48() < hapd->iconf->ignore_auth_probability) {
|
|
wpa_printf(MSG_INFO,
|
|
"TESTING: ignoring auth frame from " MACSTR,
|
|
MAC2STR(mgmt->sa));
|
|
return;
|
|
}
|
|
#endif /* CONFIG_TESTING_OPTIONS */
|
|
|
|
auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
|
|
auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
|
|
status_code = le_to_host16(mgmt->u.auth.status_code);
|
|
fc = le_to_host16(mgmt->frame_control);
|
|
seq_ctrl = le_to_host16(mgmt->seq_ctrl);
|
|
|
|
if (len >= IEEE80211_HDRLEN + sizeof(mgmt->u.auth) +
|
|
2 + WLAN_AUTH_CHALLENGE_LEN &&
|
|
mgmt->u.auth.variable[0] == WLAN_EID_CHALLENGE &&
|
|
mgmt->u.auth.variable[1] == WLAN_AUTH_CHALLENGE_LEN)
|
|
challenge = &mgmt->u.auth.variable[2];
|
|
|
|
wpa_printf(MSG_DEBUG, "authentication: STA=" MACSTR " auth_alg=%d "
|
|
"auth_transaction=%d status_code=%d wep=%d%s "
|
|
"seq_ctrl=0x%x%s%s",
|
|
MAC2STR(mgmt->sa), auth_alg, auth_transaction,
|
|
status_code, !!(fc & WLAN_FC_ISWEP),
|
|
challenge ? " challenge" : "",
|
|
seq_ctrl, (fc & WLAN_FC_RETRY) ? " retry" : "",
|
|
from_queue ? " (from queue)" : "");
|
|
|
|
#ifdef CONFIG_NO_RC4
|
|
if (auth_alg == WLAN_AUTH_SHARED_KEY) {
|
|
wpa_printf(MSG_INFO,
|
|
"Unsupported authentication algorithm (%d)",
|
|
auth_alg);
|
|
resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
|
|
goto fail;
|
|
}
|
|
#endif /* CONFIG_NO_RC4 */
|
|
|
|
if (hapd->tkip_countermeasures) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"Ongoing TKIP countermeasures (Michael MIC failure) - reject authentication");
|
|
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto fail;
|
|
}
|
|
|
|
if (!(((hapd->conf->auth_algs & WPA_AUTH_ALG_OPEN) &&
|
|
auth_alg == WLAN_AUTH_OPEN) ||
|
|
#ifdef CONFIG_IEEE80211R_AP
|
|
(hapd->conf->wpa && wpa_key_mgmt_ft(hapd->conf->wpa_key_mgmt) &&
|
|
auth_alg == WLAN_AUTH_FT) ||
|
|
#endif /* CONFIG_IEEE80211R_AP */
|
|
#ifdef CONFIG_SAE
|
|
(hapd->conf->wpa && wpa_key_mgmt_sae(hapd->conf->wpa_key_mgmt) &&
|
|
auth_alg == WLAN_AUTH_SAE) ||
|
|
#endif /* CONFIG_SAE */
|
|
#ifdef CONFIG_FILS
|
|
(hapd->conf->wpa && wpa_key_mgmt_fils(hapd->conf->wpa_key_mgmt) &&
|
|
auth_alg == WLAN_AUTH_FILS_SK) ||
|
|
(hapd->conf->wpa && wpa_key_mgmt_fils(hapd->conf->wpa_key_mgmt) &&
|
|
hapd->conf->fils_dh_group &&
|
|
auth_alg == WLAN_AUTH_FILS_SK_PFS) ||
|
|
#endif /* CONFIG_FILS */
|
|
#ifdef CONFIG_PASN
|
|
(hapd->conf->wpa &&
|
|
(hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_PASN) &&
|
|
auth_alg == WLAN_AUTH_PASN) ||
|
|
#endif /* CONFIG_PASN */
|
|
((hapd->conf->auth_algs & WPA_AUTH_ALG_SHARED) &&
|
|
auth_alg == WLAN_AUTH_SHARED_KEY))) {
|
|
wpa_printf(MSG_INFO, "Unsupported authentication algorithm (%d)",
|
|
auth_alg);
|
|
resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
|
|
goto fail;
|
|
}
|
|
|
|
if (!(auth_transaction == 1 || auth_alg == WLAN_AUTH_SAE ||
|
|
#ifdef CONFIG_PASN
|
|
(auth_alg == WLAN_AUTH_PASN && auth_transaction == 3) ||
|
|
#endif /* CONFIG_PASN */
|
|
(auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 3))) {
|
|
wpa_printf(MSG_INFO, "Unknown authentication transaction number (%d)",
|
|
auth_transaction);
|
|
resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
|
|
goto fail;
|
|
}
|
|
|
|
if (os_memcmp(mgmt->sa, hapd->own_addr, ETH_ALEN) == 0) {
|
|
wpa_printf(MSG_INFO, "Station " MACSTR " not allowed to authenticate",
|
|
MAC2STR(mgmt->sa));
|
|
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto fail;
|
|
}
|
|
|
|
if (hapd->conf->no_auth_if_seen_on) {
|
|
struct hostapd_data *other;
|
|
|
|
other = sta_track_seen_on(hapd->iface, mgmt->sa,
|
|
hapd->conf->no_auth_if_seen_on);
|
|
if (other) {
|
|
u8 *pos;
|
|
u32 info;
|
|
u8 op_class, channel, phytype;
|
|
|
|
wpa_printf(MSG_DEBUG, "%s: Reject authentication from "
|
|
MACSTR " since STA has been seen on %s",
|
|
hapd->conf->iface, MAC2STR(mgmt->sa),
|
|
hapd->conf->no_auth_if_seen_on);
|
|
|
|
resp = WLAN_STATUS_REJECTED_WITH_SUGGESTED_BSS_TRANSITION;
|
|
pos = &resp_ies[0];
|
|
*pos++ = WLAN_EID_NEIGHBOR_REPORT;
|
|
*pos++ = 13;
|
|
os_memcpy(pos, other->own_addr, ETH_ALEN);
|
|
pos += ETH_ALEN;
|
|
info = 0; /* TODO: BSSID Information */
|
|
WPA_PUT_LE32(pos, info);
|
|
pos += 4;
|
|
if (other->iconf->hw_mode == HOSTAPD_MODE_IEEE80211AD)
|
|
phytype = 8; /* dmg */
|
|
else if (other->iconf->ieee80211ac)
|
|
phytype = 9; /* vht */
|
|
else if (other->iconf->ieee80211n)
|
|
phytype = 7; /* ht */
|
|
else if (other->iconf->hw_mode ==
|
|
HOSTAPD_MODE_IEEE80211A)
|
|
phytype = 4; /* ofdm */
|
|
else if (other->iconf->hw_mode ==
|
|
HOSTAPD_MODE_IEEE80211G)
|
|
phytype = 6; /* erp */
|
|
else
|
|
phytype = 5; /* hrdsss */
|
|
if (ieee80211_freq_to_channel_ext(
|
|
hostapd_hw_get_freq(other,
|
|
other->iconf->channel),
|
|
other->iconf->secondary_channel,
|
|
other->iconf->ieee80211ac,
|
|
&op_class, &channel) == NUM_HOSTAPD_MODES) {
|
|
op_class = 0;
|
|
channel = other->iconf->channel;
|
|
}
|
|
*pos++ = op_class;
|
|
*pos++ = channel;
|
|
*pos++ = phytype;
|
|
resp_ies_len = pos - &resp_ies[0];
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
res = ieee802_11_allowed_address(hapd, mgmt->sa, (const u8 *) mgmt, len,
|
|
&rad_info);
|
|
if (res == HOSTAPD_ACL_REJECT) {
|
|
wpa_msg(hapd->msg_ctx, MSG_DEBUG,
|
|
"Ignore Authentication frame from " MACSTR
|
|
" due to ACL reject", MAC2STR(mgmt->sa));
|
|
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto fail;
|
|
}
|
|
if (res == HOSTAPD_ACL_PENDING)
|
|
return;
|
|
|
|
#ifdef CONFIG_SAE
|
|
if (auth_alg == WLAN_AUTH_SAE && !from_queue &&
|
|
(auth_transaction == 1 ||
|
|
(auth_transaction == 2 && auth_sae_queued_addr(hapd, mgmt->sa)))) {
|
|
/* Handle SAE Authentication commit message through a queue to
|
|
* provide more control for postponing the needed heavy
|
|
* processing under a possible DoS attack scenario. In addition,
|
|
* queue SAE Authentication confirm message if there happens to
|
|
* be a queued commit message from the same peer. This is needed
|
|
* to avoid reordering Authentication frames within the same
|
|
* SAE exchange. */
|
|
auth_sae_queue(hapd, mgmt, len, rssi);
|
|
return;
|
|
}
|
|
#endif /* CONFIG_SAE */
|
|
|
|
sta = ap_get_sta(hapd, mgmt->sa);
|
|
if (sta) {
|
|
sta->flags &= ~WLAN_STA_PENDING_FILS_ERP;
|
|
sta->ft_over_ds = 0;
|
|
if ((fc & WLAN_FC_RETRY) &&
|
|
sta->last_seq_ctrl != WLAN_INVALID_MGMT_SEQ &&
|
|
sta->last_seq_ctrl == seq_ctrl &&
|
|
sta->last_subtype == WLAN_FC_STYPE_AUTH) {
|
|
hostapd_logger(hapd, sta->addr,
|
|
HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_DEBUG,
|
|
"Drop repeated authentication frame seq_ctrl=0x%x",
|
|
seq_ctrl);
|
|
return;
|
|
}
|
|
#ifdef CONFIG_MESH
|
|
if ((hapd->conf->mesh & MESH_ENABLED) &&
|
|
sta->plink_state == PLINK_BLOCKED) {
|
|
wpa_printf(MSG_DEBUG, "Mesh peer " MACSTR
|
|
" is blocked - drop Authentication frame",
|
|
MAC2STR(mgmt->sa));
|
|
return;
|
|
}
|
|
#endif /* CONFIG_MESH */
|
|
#ifdef CONFIG_PASN
|
|
if (auth_alg == WLAN_AUTH_PASN &&
|
|
(sta->flags & WLAN_STA_ASSOC)) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"PASN: auth: Existing station: " MACSTR,
|
|
MAC2STR(sta->addr));
|
|
return;
|
|
}
|
|
#endif /* CONFIG_PASN */
|
|
} else {
|
|
#ifdef CONFIG_MESH
|
|
if (hapd->conf->mesh & MESH_ENABLED) {
|
|
/* if the mesh peer is not available, we don't do auth.
|
|
*/
|
|
wpa_printf(MSG_DEBUG, "Mesh peer " MACSTR
|
|
" not yet known - drop Authentication frame",
|
|
MAC2STR(mgmt->sa));
|
|
/*
|
|
* Save a copy of the frame so that it can be processed
|
|
* if a new peer entry is added shortly after this.
|
|
*/
|
|
wpabuf_free(hapd->mesh_pending_auth);
|
|
hapd->mesh_pending_auth = wpabuf_alloc_copy(mgmt, len);
|
|
os_get_reltime(&hapd->mesh_pending_auth_time);
|
|
return;
|
|
}
|
|
#endif /* CONFIG_MESH */
|
|
|
|
sta = ap_sta_add(hapd, mgmt->sa);
|
|
if (!sta) {
|
|
wpa_printf(MSG_DEBUG, "ap_sta_add() failed");
|
|
resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
|
|
goto fail;
|
|
}
|
|
}
|
|
sta->last_seq_ctrl = seq_ctrl;
|
|
sta->last_subtype = WLAN_FC_STYPE_AUTH;
|
|
#ifdef CONFIG_MBO
|
|
sta->auth_rssi = rssi;
|
|
#endif /* CONFIG_MBO */
|
|
|
|
res = ieee802_11_set_radius_info(hapd, sta, res, &rad_info);
|
|
if (res) {
|
|
wpa_printf(MSG_DEBUG, "ieee802_11_set_radius_info() failed");
|
|
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto fail;
|
|
}
|
|
|
|
sta->flags &= ~WLAN_STA_PREAUTH;
|
|
ieee802_1x_notify_pre_auth(sta->eapol_sm, 0);
|
|
|
|
/*
|
|
* If the driver supports full AP client state, add a station to the
|
|
* driver before sending authentication reply to make sure the driver
|
|
* has resources, and not to go through the entire authentication and
|
|
* association handshake, and fail it at the end.
|
|
*
|
|
* If this is not the first transaction, in a multi-step authentication
|
|
* algorithm, the station already exists in the driver
|
|
* (sta->added_unassoc = 1) so skip it.
|
|
*
|
|
* In mesh mode, the station was already added to the driver when the
|
|
* NEW_PEER_CANDIDATE event is received.
|
|
*
|
|
* If PMF was negotiated for the existing association, skip this to
|
|
* avoid dropping the STA entry and the associated keys. This is needed
|
|
* to allow the original connection work until the attempt can complete
|
|
* (re)association, so that unprotected Authentication frame cannot be
|
|
* used to bypass PMF protection.
|
|
*
|
|
* PASN authentication does not require adding/removing station to the
|
|
* driver so skip this flow in case of PASN authentication.
|
|
*/
|
|
if (FULL_AP_CLIENT_STATE_SUPP(hapd->iface->drv_flags) &&
|
|
(!(sta->flags & WLAN_STA_MFP) || !ap_sta_is_authorized(sta)) &&
|
|
!(hapd->conf->mesh & MESH_ENABLED) &&
|
|
!(sta->added_unassoc) && auth_alg != WLAN_AUTH_PASN) {
|
|
if (ap_sta_re_add(hapd, sta) < 0) {
|
|
resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
switch (auth_alg) {
|
|
case WLAN_AUTH_OPEN:
|
|
hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_DEBUG,
|
|
"authentication OK (open system)");
|
|
sta->flags |= WLAN_STA_AUTH;
|
|
wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
|
|
sta->auth_alg = WLAN_AUTH_OPEN;
|
|
mlme_authenticate_indication(hapd, sta);
|
|
break;
|
|
#ifdef CONFIG_WEP
|
|
#ifndef CONFIG_NO_RC4
|
|
case WLAN_AUTH_SHARED_KEY:
|
|
resp = auth_shared_key(hapd, sta, auth_transaction, challenge,
|
|
fc & WLAN_FC_ISWEP);
|
|
if (resp != 0)
|
|
wpa_printf(MSG_DEBUG,
|
|
"auth_shared_key() failed: status=%d", resp);
|
|
sta->auth_alg = WLAN_AUTH_SHARED_KEY;
|
|
mlme_authenticate_indication(hapd, sta);
|
|
if (sta->challenge && auth_transaction == 1) {
|
|
resp_ies[0] = WLAN_EID_CHALLENGE;
|
|
resp_ies[1] = WLAN_AUTH_CHALLENGE_LEN;
|
|
os_memcpy(resp_ies + 2, sta->challenge,
|
|
WLAN_AUTH_CHALLENGE_LEN);
|
|
resp_ies_len = 2 + WLAN_AUTH_CHALLENGE_LEN;
|
|
}
|
|
break;
|
|
#endif /* CONFIG_NO_RC4 */
|
|
#endif /* CONFIG_WEP */
|
|
#ifdef CONFIG_IEEE80211R_AP
|
|
case WLAN_AUTH_FT:
|
|
sta->auth_alg = WLAN_AUTH_FT;
|
|
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_DEBUG, "FT: Failed to initialize WPA "
|
|
"state machine");
|
|
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto fail;
|
|
}
|
|
wpa_ft_process_auth(sta->wpa_sm, mgmt->bssid,
|
|
auth_transaction, mgmt->u.auth.variable,
|
|
len - IEEE80211_HDRLEN -
|
|
sizeof(mgmt->u.auth),
|
|
handle_auth_ft_finish, hapd);
|
|
/* handle_auth_ft_finish() callback will complete auth. */
|
|
return;
|
|
#endif /* CONFIG_IEEE80211R_AP */
|
|
#ifdef CONFIG_SAE
|
|
case WLAN_AUTH_SAE:
|
|
#ifdef CONFIG_MESH
|
|
if (status_code == WLAN_STATUS_SUCCESS &&
|
|
hapd->conf->mesh & MESH_ENABLED) {
|
|
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_DEBUG,
|
|
"SAE: Failed to initialize WPA state machine");
|
|
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto fail;
|
|
}
|
|
}
|
|
#endif /* CONFIG_MESH */
|
|
handle_auth_sae(hapd, sta, mgmt, len, auth_transaction,
|
|
status_code);
|
|
return;
|
|
#endif /* CONFIG_SAE */
|
|
#ifdef CONFIG_FILS
|
|
case WLAN_AUTH_FILS_SK:
|
|
case WLAN_AUTH_FILS_SK_PFS:
|
|
handle_auth_fils(hapd, sta, mgmt->u.auth.variable,
|
|
len - IEEE80211_HDRLEN - sizeof(mgmt->u.auth),
|
|
auth_alg, auth_transaction, status_code,
|
|
handle_auth_fils_finish);
|
|
return;
|
|
#endif /* CONFIG_FILS */
|
|
#ifdef CONFIG_PASN
|
|
case WLAN_AUTH_PASN:
|
|
handle_auth_pasn(hapd, sta, mgmt, len, auth_transaction,
|
|
status_code);
|
|
return;
|
|
#endif /* CONFIG_PASN */
|
|
}
|
|
|
|
fail:
|
|
reply_res = send_auth_reply(hapd, sta, mgmt->sa, mgmt->bssid, auth_alg,
|
|
auth_alg == WLAN_AUTH_SAE ?
|
|
auth_transaction : auth_transaction + 1,
|
|
resp, resp_ies, resp_ies_len,
|
|
"handle-auth");
|
|
|
|
if (sta && sta->added_unassoc && (resp != WLAN_STATUS_SUCCESS ||
|
|
reply_res != WLAN_STATUS_SUCCESS)) {
|
|
hostapd_drv_sta_remove(hapd, sta->addr);
|
|
sta->added_unassoc = 0;
|
|
}
|
|
}
|
|
|
|
|
|
int hostapd_get_aid(struct hostapd_data *hapd, struct sta_info *sta)
|
|
{
|
|
int i, j = 32, aid;
|
|
|
|
/* get a unique AID */
|
|
if (sta->aid > 0) {
|
|
wpa_printf(MSG_DEBUG, " old AID %d", sta->aid);
|
|
return 0;
|
|
}
|
|
|
|
if (TEST_FAIL())
|
|
return -1;
|
|
|
|
for (i = 0; i < AID_WORDS; i++) {
|
|
if (hapd->sta_aid[i] == (u32) -1)
|
|
continue;
|
|
for (j = 0; j < 32; j++) {
|
|
if (!(hapd->sta_aid[i] & BIT(j)))
|
|
break;
|
|
}
|
|
if (j < 32)
|
|
break;
|
|
}
|
|
if (j == 32)
|
|
return -1;
|
|
aid = i * 32 + j + 1;
|
|
if (aid > 2007)
|
|
return -1;
|
|
|
|
sta->aid = aid;
|
|
hapd->sta_aid[i] |= BIT(j);
|
|
wpa_printf(MSG_DEBUG, " new AID %d", sta->aid);
|
|
return 0;
|
|
}
|
|
|
|
|
|
static u16 check_ssid(struct hostapd_data *hapd, struct sta_info *sta,
|
|
const u8 *ssid_ie, size_t ssid_ie_len)
|
|
{
|
|
if (ssid_ie == NULL)
|
|
return WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
|
|
if (ssid_ie_len != hapd->conf->ssid.ssid_len ||
|
|
os_memcmp(ssid_ie, hapd->conf->ssid.ssid, ssid_ie_len) != 0) {
|
|
hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_INFO,
|
|
"Station tried to associate with unknown SSID "
|
|
"'%s'", wpa_ssid_txt(ssid_ie, ssid_ie_len));
|
|
return WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
}
|
|
|
|
return WLAN_STATUS_SUCCESS;
|
|
}
|
|
|
|
|
|
static u16 check_wmm(struct hostapd_data *hapd, struct sta_info *sta,
|
|
const u8 *wmm_ie, size_t wmm_ie_len)
|
|
{
|
|
sta->flags &= ~WLAN_STA_WMM;
|
|
sta->qosinfo = 0;
|
|
if (wmm_ie && hapd->conf->wmm_enabled) {
|
|
struct wmm_information_element *wmm;
|
|
|
|
if (!hostapd_eid_wmm_valid(hapd, wmm_ie, wmm_ie_len)) {
|
|
hostapd_logger(hapd, sta->addr,
|
|
HOSTAPD_MODULE_WPA,
|
|
HOSTAPD_LEVEL_DEBUG,
|
|
"invalid WMM element in association "
|
|
"request");
|
|
return WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
}
|
|
|
|
sta->flags |= WLAN_STA_WMM;
|
|
wmm = (struct wmm_information_element *) wmm_ie;
|
|
sta->qosinfo = wmm->qos_info;
|
|
}
|
|
return WLAN_STATUS_SUCCESS;
|
|
}
|
|
|
|
static u16 check_multi_ap(struct hostapd_data *hapd, struct sta_info *sta,
|
|
const u8 *multi_ap_ie, size_t multi_ap_len)
|
|
{
|
|
u8 multi_ap_value = 0;
|
|
|
|
sta->flags &= ~WLAN_STA_MULTI_AP;
|
|
|
|
if (!hapd->conf->multi_ap)
|
|
return WLAN_STATUS_SUCCESS;
|
|
|
|
if (multi_ap_ie) {
|
|
const u8 *multi_ap_subelem;
|
|
|
|
multi_ap_subelem = get_ie(multi_ap_ie + 4,
|
|
multi_ap_len - 4,
|
|
MULTI_AP_SUB_ELEM_TYPE);
|
|
if (multi_ap_subelem && multi_ap_subelem[1] == 1) {
|
|
multi_ap_value = multi_ap_subelem[2];
|
|
} else {
|
|
hostapd_logger(hapd, sta->addr,
|
|
HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_INFO,
|
|
"Multi-AP IE has missing or invalid Multi-AP subelement");
|
|
return WLAN_STATUS_INVALID_IE;
|
|
}
|
|
}
|
|
|
|
if (multi_ap_value && multi_ap_value != MULTI_AP_BACKHAUL_STA)
|
|
hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_INFO,
|
|
"Multi-AP IE with unexpected value 0x%02x",
|
|
multi_ap_value);
|
|
|
|
if (!(multi_ap_value & MULTI_AP_BACKHAUL_STA)) {
|
|
if (hapd->conf->multi_ap & FRONTHAUL_BSS)
|
|
return WLAN_STATUS_SUCCESS;
|
|
|
|
hostapd_logger(hapd, sta->addr,
|
|
HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_INFO,
|
|
"Non-Multi-AP STA tries to associate with backhaul-only BSS");
|
|
return WLAN_STATUS_ASSOC_DENIED_UNSPEC;
|
|
}
|
|
|
|
if (!(hapd->conf->multi_ap & BACKHAUL_BSS))
|
|
hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_DEBUG,
|
|
"Backhaul STA tries to associate with fronthaul-only BSS");
|
|
|
|
sta->flags |= WLAN_STA_MULTI_AP;
|
|
return WLAN_STATUS_SUCCESS;
|
|
}
|
|
|
|
|
|
static u16 copy_supp_rates(struct hostapd_data *hapd, struct sta_info *sta,
|
|
struct ieee802_11_elems *elems)
|
|
{
|
|
/* Supported rates not used in IEEE 802.11ad/DMG */
|
|
if (hapd->iface->current_mode &&
|
|
hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211AD)
|
|
return WLAN_STATUS_SUCCESS;
|
|
|
|
if (!elems->supp_rates) {
|
|
hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_DEBUG,
|
|
"No supported rates element in AssocReq");
|
|
return WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
}
|
|
|
|
if (elems->supp_rates_len + elems->ext_supp_rates_len >
|
|
sizeof(sta->supported_rates)) {
|
|
hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_DEBUG,
|
|
"Invalid supported rates element length %d+%d",
|
|
elems->supp_rates_len,
|
|
elems->ext_supp_rates_len);
|
|
return WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
}
|
|
|
|
sta->supported_rates_len = merge_byte_arrays(
|
|
sta->supported_rates, sizeof(sta->supported_rates),
|
|
elems->supp_rates, elems->supp_rates_len,
|
|
elems->ext_supp_rates, elems->ext_supp_rates_len);
|
|
|
|
return WLAN_STATUS_SUCCESS;
|
|
}
|
|
|
|
|
|
static u16 check_ext_capab(struct hostapd_data *hapd, struct sta_info *sta,
|
|
const u8 *ext_capab_ie, size_t ext_capab_ie_len)
|
|
{
|
|
#ifdef CONFIG_INTERWORKING
|
|
/* check for QoS Map support */
|
|
if (ext_capab_ie_len >= 5) {
|
|
if (ext_capab_ie[4] & 0x01)
|
|
sta->qos_map_enabled = 1;
|
|
}
|
|
#endif /* CONFIG_INTERWORKING */
|
|
|
|
if (ext_capab_ie_len > 0) {
|
|
sta->ecsa_supported = !!(ext_capab_ie[0] & BIT(2));
|
|
os_free(sta->ext_capability);
|
|
sta->ext_capability = os_malloc(1 + ext_capab_ie_len);
|
|
if (sta->ext_capability) {
|
|
sta->ext_capability[0] = ext_capab_ie_len;
|
|
os_memcpy(sta->ext_capability + 1, ext_capab_ie,
|
|
ext_capab_ie_len);
|
|
}
|
|
}
|
|
|
|
return WLAN_STATUS_SUCCESS;
|
|
}
|
|
|
|
|
|
#ifdef CONFIG_OWE
|
|
|
|
static int owe_group_supported(struct hostapd_data *hapd, u16 group)
|
|
{
|
|
int i;
|
|
int *groups = hapd->conf->owe_groups;
|
|
|
|
if (group != 19 && group != 20 && group != 21)
|
|
return 0;
|
|
|
|
if (!groups)
|
|
return 1;
|
|
|
|
for (i = 0; groups[i] > 0; i++) {
|
|
if (groups[i] == group)
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static u16 owe_process_assoc_req(struct hostapd_data *hapd,
|
|
struct sta_info *sta, const u8 *owe_dh,
|
|
u8 owe_dh_len)
|
|
{
|
|
struct wpabuf *secret, *pub, *hkey;
|
|
int res;
|
|
u8 prk[SHA512_MAC_LEN], pmkid[SHA512_MAC_LEN];
|
|
const char *info = "OWE Key Generation";
|
|
const u8 *addr[2];
|
|
size_t len[2];
|
|
u16 group;
|
|
size_t hash_len, prime_len;
|
|
|
|
if (wpa_auth_sta_get_pmksa(sta->wpa_sm)) {
|
|
wpa_printf(MSG_DEBUG, "OWE: Using PMKSA caching");
|
|
return WLAN_STATUS_SUCCESS;
|
|
}
|
|
|
|
group = WPA_GET_LE16(owe_dh);
|
|
if (!owe_group_supported(hapd, group)) {
|
|
wpa_printf(MSG_DEBUG, "OWE: Unsupported DH group %u", group);
|
|
return WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED;
|
|
}
|
|
if (group == 19)
|
|
prime_len = 32;
|
|
else if (group == 20)
|
|
prime_len = 48;
|
|
else if (group == 21)
|
|
prime_len = 66;
|
|
else
|
|
return WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED;
|
|
|
|
crypto_ecdh_deinit(sta->owe_ecdh);
|
|
sta->owe_ecdh = crypto_ecdh_init(group);
|
|
if (!sta->owe_ecdh)
|
|
return WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED;
|
|
sta->owe_group = group;
|
|
|
|
secret = crypto_ecdh_set_peerkey(sta->owe_ecdh, 0, owe_dh + 2,
|
|
owe_dh_len - 2);
|
|
secret = wpabuf_zeropad(secret, prime_len);
|
|
if (!secret) {
|
|
wpa_printf(MSG_DEBUG, "OWE: Invalid peer DH public key");
|
|
return WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
}
|
|
wpa_hexdump_buf_key(MSG_DEBUG, "OWE: DH shared secret", secret);
|
|
|
|
/* prk = HKDF-extract(C | A | group, z) */
|
|
|
|
pub = crypto_ecdh_get_pubkey(sta->owe_ecdh, 0);
|
|
if (!pub) {
|
|
wpabuf_clear_free(secret);
|
|
return WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
}
|
|
|
|
/* PMKID = Truncate-128(Hash(C | A)) */
|
|
addr[0] = owe_dh + 2;
|
|
len[0] = owe_dh_len - 2;
|
|
addr[1] = wpabuf_head(pub);
|
|
len[1] = wpabuf_len(pub);
|
|
if (group == 19) {
|
|
res = sha256_vector(2, addr, len, pmkid);
|
|
hash_len = SHA256_MAC_LEN;
|
|
} else if (group == 20) {
|
|
res = sha384_vector(2, addr, len, pmkid);
|
|
hash_len = SHA384_MAC_LEN;
|
|
} else if (group == 21) {
|
|
res = sha512_vector(2, addr, len, pmkid);
|
|
hash_len = SHA512_MAC_LEN;
|
|
} else {
|
|
wpabuf_free(pub);
|
|
wpabuf_clear_free(secret);
|
|
return WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
}
|
|
pub = wpabuf_zeropad(pub, prime_len);
|
|
if (res < 0 || !pub) {
|
|
wpabuf_free(pub);
|
|
wpabuf_clear_free(secret);
|
|
return WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
}
|
|
|
|
hkey = wpabuf_alloc(owe_dh_len - 2 + wpabuf_len(pub) + 2);
|
|
if (!hkey) {
|
|
wpabuf_free(pub);
|
|
wpabuf_clear_free(secret);
|
|
return WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
}
|
|
|
|
wpabuf_put_data(hkey, owe_dh + 2, owe_dh_len - 2); /* C */
|
|
wpabuf_put_buf(hkey, pub); /* A */
|
|
wpabuf_free(pub);
|
|
wpabuf_put_le16(hkey, group); /* group */
|
|
if (group == 19)
|
|
res = hmac_sha256(wpabuf_head(hkey), wpabuf_len(hkey),
|
|
wpabuf_head(secret), wpabuf_len(secret), prk);
|
|
else if (group == 20)
|
|
res = hmac_sha384(wpabuf_head(hkey), wpabuf_len(hkey),
|
|
wpabuf_head(secret), wpabuf_len(secret), prk);
|
|
else if (group == 21)
|
|
res = hmac_sha512(wpabuf_head(hkey), wpabuf_len(hkey),
|
|
wpabuf_head(secret), wpabuf_len(secret), prk);
|
|
wpabuf_clear_free(hkey);
|
|
wpabuf_clear_free(secret);
|
|
if (res < 0)
|
|
return WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
|
|
wpa_hexdump_key(MSG_DEBUG, "OWE: prk", prk, hash_len);
|
|
|
|
/* PMK = HKDF-expand(prk, "OWE Key Generation", n) */
|
|
|
|
os_free(sta->owe_pmk);
|
|
sta->owe_pmk = os_malloc(hash_len);
|
|
if (!sta->owe_pmk) {
|
|
os_memset(prk, 0, SHA512_MAC_LEN);
|
|
return WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
}
|
|
|
|
if (group == 19)
|
|
res = hmac_sha256_kdf(prk, hash_len, NULL, (const u8 *) info,
|
|
os_strlen(info), sta->owe_pmk, hash_len);
|
|
else if (group == 20)
|
|
res = hmac_sha384_kdf(prk, hash_len, NULL, (const u8 *) info,
|
|
os_strlen(info), sta->owe_pmk, hash_len);
|
|
else if (group == 21)
|
|
res = hmac_sha512_kdf(prk, hash_len, NULL, (const u8 *) info,
|
|
os_strlen(info), sta->owe_pmk, hash_len);
|
|
os_memset(prk, 0, SHA512_MAC_LEN);
|
|
if (res < 0) {
|
|
os_free(sta->owe_pmk);
|
|
sta->owe_pmk = NULL;
|
|
return WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
}
|
|
sta->owe_pmk_len = hash_len;
|
|
|
|
wpa_hexdump_key(MSG_DEBUG, "OWE: PMK", sta->owe_pmk, sta->owe_pmk_len);
|
|
wpa_hexdump(MSG_DEBUG, "OWE: PMKID", pmkid, PMKID_LEN);
|
|
wpa_auth_pmksa_add2(hapd->wpa_auth, sta->addr, sta->owe_pmk,
|
|
sta->owe_pmk_len, pmkid, 0, WPA_KEY_MGMT_OWE);
|
|
|
|
return WLAN_STATUS_SUCCESS;
|
|
}
|
|
|
|
|
|
u16 owe_validate_request(struct hostapd_data *hapd, const u8 *peer,
|
|
const u8 *rsn_ie, size_t rsn_ie_len,
|
|
const u8 *owe_dh, size_t owe_dh_len)
|
|
{
|
|
struct wpa_ie_data data;
|
|
int res;
|
|
|
|
if (!rsn_ie || rsn_ie_len < 2) {
|
|
wpa_printf(MSG_DEBUG, "OWE: Invalid RSNE from " MACSTR,
|
|
MAC2STR(peer));
|
|
return WLAN_STATUS_INVALID_IE;
|
|
}
|
|
rsn_ie -= 2;
|
|
rsn_ie_len += 2;
|
|
|
|
res = wpa_parse_wpa_ie_rsn(rsn_ie, rsn_ie_len, &data);
|
|
if (res) {
|
|
wpa_printf(MSG_DEBUG, "Failed to parse RSNE from " MACSTR
|
|
" (res=%d)", MAC2STR(peer), res);
|
|
wpa_hexdump(MSG_DEBUG, "RSNE", rsn_ie, rsn_ie_len);
|
|
return wpa_res_to_status_code(res);
|
|
}
|
|
if (!(data.key_mgmt & WPA_KEY_MGMT_OWE)) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"OWE: Unexpected key mgmt 0x%x from " MACSTR,
|
|
(unsigned int) data.key_mgmt, MAC2STR(peer));
|
|
return WLAN_STATUS_AKMP_NOT_VALID;
|
|
}
|
|
if (!owe_dh) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"OWE: No Diffie-Hellman Parameter element from "
|
|
MACSTR, MAC2STR(peer));
|
|
return WLAN_STATUS_AKMP_NOT_VALID;
|
|
}
|
|
|
|
return WLAN_STATUS_SUCCESS;
|
|
}
|
|
|
|
|
|
u16 owe_process_rsn_ie(struct hostapd_data *hapd,
|
|
struct sta_info *sta,
|
|
const u8 *rsn_ie, size_t rsn_ie_len,
|
|
const u8 *owe_dh, size_t owe_dh_len)
|
|
{
|
|
u16 status;
|
|
u8 *owe_buf, ie[256 * 2];
|
|
size_t ie_len = 0;
|
|
enum wpa_validate_result res;
|
|
|
|
if (!rsn_ie || rsn_ie_len < 2) {
|
|
wpa_printf(MSG_DEBUG, "OWE: No RSNE in (Re)AssocReq");
|
|
status = WLAN_STATUS_INVALID_IE;
|
|
goto end;
|
|
}
|
|
|
|
if (!sta->wpa_sm)
|
|
sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, sta->addr,
|
|
NULL);
|
|
if (!sta->wpa_sm) {
|
|
wpa_printf(MSG_WARNING,
|
|
"OWE: Failed to initialize WPA state machine");
|
|
status = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto end;
|
|
}
|
|
rsn_ie -= 2;
|
|
rsn_ie_len += 2;
|
|
res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
|
|
hapd->iface->freq, rsn_ie, rsn_ie_len,
|
|
NULL, 0, NULL, 0, owe_dh, owe_dh_len);
|
|
status = wpa_res_to_status_code(res);
|
|
if (status != WLAN_STATUS_SUCCESS)
|
|
goto end;
|
|
status = owe_process_assoc_req(hapd, sta, owe_dh, owe_dh_len);
|
|
if (status != WLAN_STATUS_SUCCESS)
|
|
goto end;
|
|
owe_buf = wpa_auth_write_assoc_resp_owe(sta->wpa_sm, ie, sizeof(ie),
|
|
NULL, 0);
|
|
if (!owe_buf) {
|
|
status = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto end;
|
|
}
|
|
|
|
if (sta->owe_ecdh) {
|
|
struct wpabuf *pub;
|
|
|
|
pub = crypto_ecdh_get_pubkey(sta->owe_ecdh, 0);
|
|
if (!pub) {
|
|
status = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto end;
|
|
}
|
|
|
|
/* OWE Diffie-Hellman Parameter element */
|
|
*owe_buf++ = WLAN_EID_EXTENSION; /* Element ID */
|
|
*owe_buf++ = 1 + 2 + wpabuf_len(pub); /* Length */
|
|
*owe_buf++ = WLAN_EID_EXT_OWE_DH_PARAM; /* Element ID Extension
|
|
*/
|
|
WPA_PUT_LE16(owe_buf, sta->owe_group);
|
|
owe_buf += 2;
|
|
os_memcpy(owe_buf, wpabuf_head(pub), wpabuf_len(pub));
|
|
owe_buf += wpabuf_len(pub);
|
|
wpabuf_free(pub);
|
|
sta->external_dh_updated = 1;
|
|
}
|
|
ie_len = owe_buf - ie;
|
|
|
|
end:
|
|
wpa_printf(MSG_DEBUG, "OWE: Update status %d, ie len %d for peer "
|
|
MACSTR, status, (unsigned int) ie_len,
|
|
MAC2STR(sta->addr));
|
|
hostapd_drv_update_dh_ie(hapd, sta->addr, status,
|
|
status == WLAN_STATUS_SUCCESS ? ie : NULL,
|
|
ie_len);
|
|
|
|
return status;
|
|
}
|
|
|
|
#endif /* CONFIG_OWE */
|
|
|
|
|
|
static bool check_sa_query(struct hostapd_data *hapd, struct sta_info *sta,
|
|
int reassoc)
|
|
{
|
|
if ((sta->flags &
|
|
(WLAN_STA_ASSOC | WLAN_STA_MFP | WLAN_STA_AUTHORIZED)) !=
|
|
(WLAN_STA_ASSOC | WLAN_STA_MFP | WLAN_STA_AUTHORIZED))
|
|
return false;
|
|
|
|
if (!sta->sa_query_timed_out && sta->sa_query_count > 0)
|
|
ap_check_sa_query_timeout(hapd, sta);
|
|
|
|
if (!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)
|
|
ap_sta_start_sa_query(hapd, sta);
|
|
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
|
|
static int check_assoc_ies(struct hostapd_data *hapd, struct sta_info *sta,
|
|
const u8 *ies, size_t ies_len, int reassoc)
|
|
{
|
|
struct ieee802_11_elems elems;
|
|
int resp;
|
|
const u8 *wpa_ie;
|
|
size_t wpa_ie_len;
|
|
const u8 *p2p_dev_addr = NULL;
|
|
|
|
if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed) {
|
|
hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_INFO, "Station sent an invalid "
|
|
"association request");
|
|
return WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
}
|
|
|
|
resp = check_ssid(hapd, sta, elems.ssid, elems.ssid_len);
|
|
if (resp != WLAN_STATUS_SUCCESS)
|
|
return resp;
|
|
resp = check_wmm(hapd, sta, elems.wmm, elems.wmm_len);
|
|
if (resp != WLAN_STATUS_SUCCESS)
|
|
return resp;
|
|
resp = check_ext_capab(hapd, sta, elems.ext_capab, elems.ext_capab_len);
|
|
if (resp != WLAN_STATUS_SUCCESS)
|
|
return resp;
|
|
resp = copy_supp_rates(hapd, sta, &elems);
|
|
if (resp != WLAN_STATUS_SUCCESS)
|
|
return resp;
|
|
|
|
resp = check_multi_ap(hapd, sta, elems.multi_ap, elems.multi_ap_len);
|
|
if (resp != WLAN_STATUS_SUCCESS)
|
|
return resp;
|
|
|
|
resp = copy_sta_ht_capab(hapd, sta, elems.ht_capabilities);
|
|
if (resp != WLAN_STATUS_SUCCESS)
|
|
return resp;
|
|
if (hapd->iconf->ieee80211n && hapd->iconf->require_ht &&
|
|
!(sta->flags & WLAN_STA_HT)) {
|
|
hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_INFO, "Station does not support "
|
|
"mandatory HT PHY - reject association");
|
|
return WLAN_STATUS_ASSOC_DENIED_NO_HT;
|
|
}
|
|
|
|
#ifdef CONFIG_IEEE80211AC
|
|
if (hapd->iconf->ieee80211ac) {
|
|
resp = copy_sta_vht_capab(hapd, sta, elems.vht_capabilities);
|
|
if (resp != WLAN_STATUS_SUCCESS)
|
|
return resp;
|
|
|
|
resp = set_sta_vht_opmode(hapd, sta, elems.vht_opmode_notif);
|
|
if (resp != WLAN_STATUS_SUCCESS)
|
|
return resp;
|
|
}
|
|
|
|
if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht &&
|
|
!(sta->flags & WLAN_STA_VHT)) {
|
|
hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_INFO, "Station does not support "
|
|
"mandatory VHT PHY - reject association");
|
|
return WLAN_STATUS_ASSOC_DENIED_NO_VHT;
|
|
}
|
|
|
|
if (hapd->conf->vendor_vht && !elems.vht_capabilities) {
|
|
resp = copy_sta_vendor_vht(hapd, sta, elems.vendor_vht,
|
|
elems.vendor_vht_len);
|
|
if (resp != WLAN_STATUS_SUCCESS)
|
|
return resp;
|
|
}
|
|
#endif /* CONFIG_IEEE80211AC */
|
|
#ifdef CONFIG_IEEE80211AX
|
|
if (hapd->iconf->ieee80211ax && !hapd->conf->disable_11ax) {
|
|
resp = copy_sta_he_capab(hapd, sta, IEEE80211_MODE_AP,
|
|
elems.he_capabilities,
|
|
elems.he_capabilities_len);
|
|
if (resp != WLAN_STATUS_SUCCESS)
|
|
return resp;
|
|
if (is_6ghz_op_class(hapd->iconf->op_class)) {
|
|
if (!(sta->flags & WLAN_STA_HE)) {
|
|
hostapd_logger(hapd, sta->addr,
|
|
HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_INFO,
|
|
"Station does not support mandatory HE PHY - reject association");
|
|
return WLAN_STATUS_DENIED_HE_NOT_SUPPORTED;
|
|
}
|
|
resp = copy_sta_he_6ghz_capab(hapd, sta,
|
|
elems.he_6ghz_band_cap);
|
|
if (resp != WLAN_STATUS_SUCCESS)
|
|
return resp;
|
|
}
|
|
}
|
|
#endif /* CONFIG_IEEE80211AX */
|
|
|
|
#ifdef CONFIG_P2P
|
|
if (elems.p2p) {
|
|
wpabuf_free(sta->p2p_ie);
|
|
sta->p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
|
|
P2P_IE_VENDOR_TYPE);
|
|
if (sta->p2p_ie)
|
|
p2p_dev_addr = p2p_get_go_dev_addr(sta->p2p_ie);
|
|
} else {
|
|
wpabuf_free(sta->p2p_ie);
|
|
sta->p2p_ie = NULL;
|
|
}
|
|
#endif /* CONFIG_P2P */
|
|
|
|
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 | WLAN_STA_WPS2);
|
|
if (hapd->conf->wps_state && elems.wps_ie) {
|
|
wpa_printf(MSG_DEBUG, "STA included WPS IE in (Re)Association "
|
|
"Request - assume WPS is used");
|
|
if (check_sa_query(hapd, sta, reassoc))
|
|
return WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY;
|
|
sta->flags |= WLAN_STA_WPS;
|
|
wpabuf_free(sta->wps_ie);
|
|
sta->wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
|
|
WPS_IE_VENDOR_TYPE);
|
|
if (sta->wps_ie && wps_is_20(sta->wps_ie)) {
|
|
wpa_printf(MSG_DEBUG, "WPS: STA supports WPS 2.0");
|
|
sta->flags |= WLAN_STA_WPS2;
|
|
}
|
|
wpa_ie = NULL;
|
|
wpa_ie_len = 0;
|
|
if (sta->wps_ie && wps_validate_assoc_req(sta->wps_ie) < 0) {
|
|
wpa_printf(MSG_DEBUG, "WPS: Invalid WPS IE in "
|
|
"(Re)Association Request - reject");
|
|
return WLAN_STATUS_INVALID_IE;
|
|
}
|
|
} else if (hapd->conf->wps_state && wpa_ie == NULL) {
|
|
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) {
|
|
hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_INFO,
|
|
"No WPA/RSN IE in association request");
|
|
return WLAN_STATUS_INVALID_IE;
|
|
}
|
|
|
|
if (hapd->conf->wpa && wpa_ie) {
|
|
enum wpa_validate_result 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,
|
|
p2p_dev_addr);
|
|
if (sta->wpa_sm == NULL) {
|
|
wpa_printf(MSG_WARNING, "Failed to initialize WPA "
|
|
"state machine");
|
|
return WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
}
|
|
wpa_auth_set_auth_alg(sta->wpa_sm, sta->auth_alg);
|
|
res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
|
|
hapd->iface->freq,
|
|
wpa_ie, wpa_ie_len,
|
|
elems.rsnxe ? elems.rsnxe - 2 : NULL,
|
|
elems.rsnxe ? elems.rsnxe_len + 2 : 0,
|
|
elems.mdie, elems.mdie_len,
|
|
elems.owe_dh, elems.owe_dh_len);
|
|
resp = wpa_res_to_status_code(res);
|
|
if (resp != WLAN_STATUS_SUCCESS)
|
|
return resp;
|
|
|
|
if (check_sa_query(hapd, sta, reassoc))
|
|
return WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY;
|
|
|
|
if (wpa_auth_uses_mfp(sta->wpa_sm))
|
|
sta->flags |= WLAN_STA_MFP;
|
|
else
|
|
sta->flags &= ~WLAN_STA_MFP;
|
|
|
|
#ifdef CONFIG_IEEE80211R_AP
|
|
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));
|
|
return WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
}
|
|
|
|
resp = wpa_ft_validate_reassoc(sta->wpa_sm, ies,
|
|
ies_len);
|
|
if (resp != WLAN_STATUS_SUCCESS)
|
|
return resp;
|
|
}
|
|
#endif /* CONFIG_IEEE80211R_AP */
|
|
|
|
#ifdef CONFIG_SAE
|
|
if (wpa_auth_uses_sae(sta->wpa_sm) && sta->sae &&
|
|
sta->sae->state == SAE_ACCEPTED)
|
|
wpa_auth_add_sae_pmkid(sta->wpa_sm, sta->sae->pmkid);
|
|
|
|
if (wpa_auth_uses_sae(sta->wpa_sm) &&
|
|
sta->auth_alg == WLAN_AUTH_OPEN) {
|
|
struct rsn_pmksa_cache_entry *sa;
|
|
sa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
|
|
if (!sa || sa->akmp != WPA_KEY_MGMT_SAE) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"SAE: No PMKSA cache entry found for "
|
|
MACSTR, MAC2STR(sta->addr));
|
|
return WLAN_STATUS_INVALID_PMKID;
|
|
}
|
|
wpa_printf(MSG_DEBUG, "SAE: " MACSTR
|
|
" using PMKSA caching", MAC2STR(sta->addr));
|
|
} else if (wpa_auth_uses_sae(sta->wpa_sm) &&
|
|
sta->auth_alg != WLAN_AUTH_SAE &&
|
|
!(sta->auth_alg == WLAN_AUTH_FT &&
|
|
wpa_auth_uses_ft_sae(sta->wpa_sm))) {
|
|
wpa_printf(MSG_DEBUG, "SAE: " MACSTR " tried to use "
|
|
"SAE AKM after non-SAE auth_alg %u",
|
|
MAC2STR(sta->addr), sta->auth_alg);
|
|
return WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
|
|
}
|
|
|
|
if (hapd->conf->sae_pwe == 2 &&
|
|
sta->auth_alg == WLAN_AUTH_SAE &&
|
|
sta->sae && !sta->sae->h2e &&
|
|
ieee802_11_rsnx_capab_len(elems.rsnxe, elems.rsnxe_len,
|
|
WLAN_RSNX_CAPAB_SAE_H2E)) {
|
|
wpa_printf(MSG_INFO, "SAE: " MACSTR
|
|
" indicates support for SAE H2E, but did not use it",
|
|
MAC2STR(sta->addr));
|
|
return WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
}
|
|
#endif /* CONFIG_SAE */
|
|
|
|
#ifdef CONFIG_OWE
|
|
if ((hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_OWE) &&
|
|
wpa_auth_sta_key_mgmt(sta->wpa_sm) == WPA_KEY_MGMT_OWE &&
|
|
elems.owe_dh) {
|
|
resp = owe_process_assoc_req(hapd, sta, elems.owe_dh,
|
|
elems.owe_dh_len);
|
|
if (resp != WLAN_STATUS_SUCCESS)
|
|
return resp;
|
|
}
|
|
#endif /* CONFIG_OWE */
|
|
|
|
#ifdef CONFIG_DPP2
|
|
dpp_pfs_free(sta->dpp_pfs);
|
|
sta->dpp_pfs = NULL;
|
|
|
|
if (DPP_VERSION > 1 &&
|
|
(hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_DPP) &&
|
|
hapd->conf->dpp_netaccesskey && sta->wpa_sm &&
|
|
wpa_auth_sta_key_mgmt(sta->wpa_sm) == WPA_KEY_MGMT_DPP &&
|
|
elems.owe_dh) {
|
|
sta->dpp_pfs = dpp_pfs_init(
|
|
wpabuf_head(hapd->conf->dpp_netaccesskey),
|
|
wpabuf_len(hapd->conf->dpp_netaccesskey));
|
|
if (!sta->dpp_pfs) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"DPP: Could not initialize PFS");
|
|
/* Try to continue without PFS */
|
|
goto pfs_fail;
|
|
}
|
|
|
|
if (dpp_pfs_process(sta->dpp_pfs, elems.owe_dh,
|
|
elems.owe_dh_len) < 0) {
|
|
dpp_pfs_free(sta->dpp_pfs);
|
|
sta->dpp_pfs = NULL;
|
|
return WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
}
|
|
}
|
|
|
|
wpa_auth_set_dpp_z(sta->wpa_sm, sta->dpp_pfs ?
|
|
sta->dpp_pfs->secret : NULL);
|
|
pfs_fail:
|
|
#endif /* CONFIG_DPP2 */
|
|
|
|
if ((sta->flags & (WLAN_STA_HT | WLAN_STA_VHT)) &&
|
|
wpa_auth_get_pairwise(sta->wpa_sm) == WPA_CIPHER_TKIP) {
|
|
hostapd_logger(hapd, sta->addr,
|
|
HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_INFO,
|
|
"Station tried to use TKIP with HT "
|
|
"association");
|
|
return WLAN_STATUS_CIPHER_REJECTED_PER_POLICY;
|
|
}
|
|
#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 */
|
|
} else
|
|
wpa_auth_sta_no_wpa(sta->wpa_sm);
|
|
|
|
#ifdef CONFIG_P2P
|
|
p2p_group_notif_assoc(hapd->p2p_group, sta->addr, ies, ies_len);
|
|
#endif /* CONFIG_P2P */
|
|
|
|
#ifdef CONFIG_HS20
|
|
wpabuf_free(sta->hs20_ie);
|
|
if (elems.hs20 && elems.hs20_len > 4) {
|
|
int release;
|
|
|
|
sta->hs20_ie = wpabuf_alloc_copy(elems.hs20 + 4,
|
|
elems.hs20_len - 4);
|
|
release = ((elems.hs20[4] >> 4) & 0x0f) + 1;
|
|
if (release >= 2 && !wpa_auth_uses_mfp(sta->wpa_sm) &&
|
|
hapd->conf->ieee80211w != NO_MGMT_FRAME_PROTECTION) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"HS 2.0: PMF not negotiated by release %d station "
|
|
MACSTR, release, MAC2STR(sta->addr));
|
|
return WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
|
|
}
|
|
} else {
|
|
sta->hs20_ie = NULL;
|
|
}
|
|
|
|
wpabuf_free(sta->roaming_consortium);
|
|
if (elems.roaming_cons_sel)
|
|
sta->roaming_consortium = wpabuf_alloc_copy(
|
|
elems.roaming_cons_sel + 4,
|
|
elems.roaming_cons_sel_len - 4);
|
|
else
|
|
sta->roaming_consortium = 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 */
|
|
|
|
#ifdef CONFIG_MBO
|
|
mbo_ap_check_sta_assoc(hapd, sta, &elems);
|
|
|
|
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 */
|
|
|
|
#if defined(CONFIG_FILS) && defined(CONFIG_OCV)
|
|
if (wpa_auth_uses_ocv(sta->wpa_sm) &&
|
|
(sta->auth_alg == WLAN_AUTH_FILS_SK ||
|
|
sta->auth_alg == WLAN_AUTH_FILS_SK_PFS ||
|
|
sta->auth_alg == WLAN_AUTH_FILS_PK)) {
|
|
struct wpa_channel_info ci;
|
|
int tx_chanwidth;
|
|
int tx_seg1_idx;
|
|
enum oci_verify_result res;
|
|
|
|
if (hostapd_drv_channel_info(hapd, &ci) != 0) {
|
|
wpa_printf(MSG_WARNING,
|
|
"Failed to get channel info to validate received OCI in FILS (Re)Association Request frame");
|
|
return WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
}
|
|
|
|
if (get_sta_tx_parameters(sta->wpa_sm,
|
|
channel_width_to_int(ci.chanwidth),
|
|
ci.seg1_idx, &tx_chanwidth,
|
|
&tx_seg1_idx) < 0)
|
|
return WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
|
|
res = ocv_verify_tx_params(elems.oci, elems.oci_len, &ci,
|
|
tx_chanwidth, tx_seg1_idx);
|
|
if (wpa_auth_uses_ocv(sta->wpa_sm) == 2 &&
|
|
res == OCI_NOT_FOUND) {
|
|
/* Work around misbehaving STAs */
|
|
wpa_printf(MSG_INFO,
|
|
"FILS: Disable OCV with a STA that does not send OCI");
|
|
wpa_auth_set_ocv(sta->wpa_sm, 0);
|
|
} else if (res != OCI_SUCCESS) {
|
|
wpa_printf(MSG_WARNING, "FILS: OCV failed: %s",
|
|
ocv_errorstr);
|
|
wpa_msg(hapd->msg_ctx, MSG_INFO, OCV_FAILURE "addr="
|
|
MACSTR " frame=fils-reassoc-req error=%s",
|
|
MAC2STR(sta->addr), ocv_errorstr);
|
|
return WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
}
|
|
}
|
|
#endif /* CONFIG_FILS && CONFIG_OCV */
|
|
|
|
ap_copy_sta_supp_op_classes(sta, elems.supp_op_classes,
|
|
elems.supp_op_classes_len);
|
|
|
|
if ((sta->capability & WLAN_CAPABILITY_RADIO_MEASUREMENT) &&
|
|
elems.rrm_enabled &&
|
|
elems.rrm_enabled_len >= sizeof(sta->rrm_enabled_capa))
|
|
os_memcpy(sta->rrm_enabled_capa, elems.rrm_enabled,
|
|
sizeof(sta->rrm_enabled_capa));
|
|
|
|
if (elems.power_capab) {
|
|
sta->min_tx_power = elems.power_capab[0];
|
|
sta->max_tx_power = elems.power_capab[1];
|
|
sta->power_capab = 1;
|
|
} else {
|
|
sta->power_capab = 0;
|
|
}
|
|
|
|
return WLAN_STATUS_SUCCESS;
|
|
}
|
|
|
|
|
|
static void send_deauth(struct hostapd_data *hapd, const u8 *addr,
|
|
u16 reason_code)
|
|
{
|
|
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_drv_send_mlme(hapd, &reply, send_len, 0, NULL, 0, 0) < 0)
|
|
wpa_printf(MSG_INFO, "Failed to send deauth: %s",
|
|
strerror(errno));
|
|
}
|
|
|
|
|
|
static int add_associated_sta(struct hostapd_data *hapd,
|
|
struct sta_info *sta, int reassoc)
|
|
{
|
|
struct ieee80211_ht_capabilities ht_cap;
|
|
struct ieee80211_vht_capabilities vht_cap;
|
|
struct ieee80211_he_capabilities he_cap;
|
|
int set = 1;
|
|
|
|
/*
|
|
* Remove the STA entry to ensure the STA PS state gets cleared and
|
|
* configuration gets updated. This is relevant for cases, such as
|
|
* FT-over-the-DS, where a station re-associates back to the same AP but
|
|
* skips the authentication flow, or if working with a driver that
|
|
* does not support full AP client state.
|
|
*
|
|
* Skip this if the STA has already completed FT reassociation and the
|
|
* TK has been configured since the TX/RX PN must not be reset to 0 for
|
|
* the same key.
|
|
*
|
|
* FT-over-the-DS has a special case where the STA entry (and as such,
|
|
* the TK) has not yet been configured to the driver depending on which
|
|
* driver interface is used. For that case, allow add-STA operation to
|
|
* be used (instead of set-STA). This is needed to allow mac80211-based
|
|
* drivers to accept the STA parameter configuration. Since this is
|
|
* after a new FT-over-DS exchange, a new TK has been derived, so key
|
|
* reinstallation is not a concern for this case.
|
|
*/
|
|
wpa_printf(MSG_DEBUG, "Add associated STA " MACSTR
|
|
" (added_unassoc=%d auth_alg=%u ft_over_ds=%u reassoc=%d authorized=%d ft_tk=%d fils_tk=%d)",
|
|
MAC2STR(sta->addr), sta->added_unassoc, sta->auth_alg,
|
|
sta->ft_over_ds, reassoc,
|
|
!!(sta->flags & WLAN_STA_AUTHORIZED),
|
|
wpa_auth_sta_ft_tk_already_set(sta->wpa_sm),
|
|
wpa_auth_sta_fils_tk_already_set(sta->wpa_sm));
|
|
|
|
if (!sta->added_unassoc &&
|
|
(!(sta->flags & WLAN_STA_AUTHORIZED) ||
|
|
(reassoc && sta->ft_over_ds && sta->auth_alg == WLAN_AUTH_FT) ||
|
|
(!wpa_auth_sta_ft_tk_already_set(sta->wpa_sm) &&
|
|
!wpa_auth_sta_fils_tk_already_set(sta->wpa_sm)))) {
|
|
hostapd_drv_sta_remove(hapd, sta->addr);
|
|
wpa_auth_sm_event(sta->wpa_sm, WPA_DRV_STA_REMOVED);
|
|
set = 0;
|
|
|
|
/* Do not allow the FT-over-DS exception to be used more than
|
|
* once per authentication exchange to guarantee a new TK is
|
|
* used here */
|
|
sta->ft_over_ds = 0;
|
|
}
|
|
|
|
if (sta->flags & WLAN_STA_HT)
|
|
hostapd_get_ht_capab(hapd, sta->ht_capabilities, &ht_cap);
|
|
#ifdef CONFIG_IEEE80211AC
|
|
if (sta->flags & WLAN_STA_VHT)
|
|
hostapd_get_vht_capab(hapd, sta->vht_capabilities, &vht_cap);
|
|
#endif /* CONFIG_IEEE80211AC */
|
|
#ifdef CONFIG_IEEE80211AX
|
|
if (sta->flags & WLAN_STA_HE) {
|
|
hostapd_get_he_capab(hapd, sta->he_capab, &he_cap,
|
|
sta->he_capab_len);
|
|
}
|
|
#endif /* CONFIG_IEEE80211AX */
|
|
|
|
/*
|
|
* Add the station with forced WLAN_STA_ASSOC flag. The sta->flags
|
|
* will be set when the ACK frame for the (Re)Association Response frame
|
|
* is processed (TX status driver event).
|
|
*/
|
|
if (hostapd_sta_add(hapd, sta->addr, sta->aid, sta->capability,
|
|
sta->supported_rates, sta->supported_rates_len,
|
|
sta->listen_interval,
|
|
sta->flags & WLAN_STA_HT ? &ht_cap : NULL,
|
|
sta->flags & WLAN_STA_VHT ? &vht_cap : NULL,
|
|
sta->flags & WLAN_STA_HE ? &he_cap : NULL,
|
|
sta->flags & WLAN_STA_HE ? sta->he_capab_len : 0,
|
|
sta->he_6ghz_capab,
|
|
sta->flags | WLAN_STA_ASSOC, sta->qosinfo,
|
|
sta->vht_opmode, sta->p2p_ie ? 1 : 0,
|
|
set)) {
|
|
hostapd_logger(hapd, sta->addr,
|
|
HOSTAPD_MODULE_IEEE80211, HOSTAPD_LEVEL_NOTICE,
|
|
"Could not %s STA to kernel driver",
|
|
set ? "set" : "add");
|
|
|
|
if (sta->added_unassoc) {
|
|
hostapd_drv_sta_remove(hapd, sta->addr);
|
|
sta->added_unassoc = 0;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
sta->added_unassoc = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static u16 send_assoc_resp(struct hostapd_data *hapd, struct sta_info *sta,
|
|
const u8 *addr, u16 status_code, int reassoc,
|
|
const u8 *ies, size_t ies_len, int rssi,
|
|
int omit_rsnxe)
|
|
{
|
|
int send_len;
|
|
u8 *buf;
|
|
size_t buflen;
|
|
struct ieee80211_mgmt *reply;
|
|
u8 *p;
|
|
u16 res = WLAN_STATUS_SUCCESS;
|
|
|
|
buflen = sizeof(struct ieee80211_mgmt) + 1024;
|
|
#ifdef CONFIG_FILS
|
|
if (sta && sta->fils_hlp_resp)
|
|
buflen += wpabuf_len(sta->fils_hlp_resp);
|
|
if (sta)
|
|
buflen += 150;
|
|
#endif /* CONFIG_FILS */
|
|
#ifdef CONFIG_OWE
|
|
if (sta && (hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_OWE))
|
|
buflen += 150;
|
|
#endif /* CONFIG_OWE */
|
|
#ifdef CONFIG_DPP2
|
|
if (sta && sta->dpp_pfs)
|
|
buflen += 5 + sta->dpp_pfs->curve->prime_len;
|
|
#endif /* CONFIG_DPP2 */
|
|
buf = os_zalloc(buflen);
|
|
if (!buf) {
|
|
res = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto done;
|
|
}
|
|
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, 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));
|
|
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);
|
|
|
|
/* Radio measurement capabilities */
|
|
p = hostapd_eid_rm_enabled_capab(hapd, p, buf + buflen - p);
|
|
|
|
#ifdef CONFIG_MBO
|
|
if (status_code == WLAN_STATUS_DENIED_POOR_CHANNEL_CONDITIONS &&
|
|
rssi != 0) {
|
|
int delta = hapd->iconf->rssi_reject_assoc_rssi - rssi;
|
|
|
|
p = hostapd_eid_mbo_rssi_assoc_rej(hapd, p, buf + buflen - p,
|
|
delta);
|
|
}
|
|
#endif /* CONFIG_MBO */
|
|
|
|
#ifdef CONFIG_IEEE80211R_AP
|
|
if (sta && 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 + buflen - p,
|
|
sta->auth_alg, ies, ies_len,
|
|
omit_rsnxe);
|
|
if (!p) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"FT: Failed to write AssocResp IEs");
|
|
res = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto done;
|
|
}
|
|
}
|
|
#endif /* CONFIG_IEEE80211R_AP */
|
|
#ifdef CONFIG_FILS
|
|
if (sta && status_code == WLAN_STATUS_SUCCESS &&
|
|
(sta->auth_alg == WLAN_AUTH_FILS_SK ||
|
|
sta->auth_alg == WLAN_AUTH_FILS_SK_PFS ||
|
|
sta->auth_alg == WLAN_AUTH_FILS_PK))
|
|
p = wpa_auth_write_assoc_resp_fils(sta->wpa_sm, p,
|
|
buf + buflen - p,
|
|
ies, ies_len);
|
|
#endif /* CONFIG_FILS */
|
|
|
|
#ifdef CONFIG_OWE
|
|
if (sta && status_code == WLAN_STATUS_SUCCESS &&
|
|
(hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_OWE))
|
|
p = wpa_auth_write_assoc_resp_owe(sta->wpa_sm, p,
|
|
buf + buflen - p,
|
|
ies, ies_len);
|
|
#endif /* CONFIG_OWE */
|
|
|
|
if (sta && status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY)
|
|
p = hostapd_eid_assoc_comeback_time(hapd, sta, p);
|
|
|
|
p = hostapd_eid_ht_capabilities(hapd, p);
|
|
p = hostapd_eid_ht_operation(hapd, p);
|
|
|
|
#ifdef CONFIG_IEEE80211AC
|
|
if (hapd->iconf->ieee80211ac && !hapd->conf->disable_11ac &&
|
|
!is_6ghz_op_class(hapd->iconf->op_class)) {
|
|
u32 nsts = 0, sta_nsts;
|
|
|
|
if (sta && hapd->conf->use_sta_nsts && sta->vht_capabilities) {
|
|
struct ieee80211_vht_capabilities *capa;
|
|
|
|
nsts = (hapd->iface->conf->vht_capab >>
|
|
VHT_CAP_BEAMFORMEE_STS_OFFSET) & 7;
|
|
capa = sta->vht_capabilities;
|
|
sta_nsts = (le_to_host32(capa->vht_capabilities_info) >>
|
|
VHT_CAP_BEAMFORMEE_STS_OFFSET) & 7;
|
|
|
|
if (nsts < sta_nsts)
|
|
nsts = 0;
|
|
else
|
|
nsts = sta_nsts;
|
|
}
|
|
p = hostapd_eid_vht_capabilities(hapd, p, nsts);
|
|
p = hostapd_eid_vht_operation(hapd, p);
|
|
}
|
|
#endif /* CONFIG_IEEE80211AC */
|
|
|
|
#ifdef CONFIG_IEEE80211AX
|
|
if (hapd->iconf->ieee80211ax && !hapd->conf->disable_11ax) {
|
|
p = hostapd_eid_he_capab(hapd, p, IEEE80211_MODE_AP);
|
|
p = hostapd_eid_he_operation(hapd, p);
|
|
p = hostapd_eid_spatial_reuse(hapd, p);
|
|
p = hostapd_eid_he_mu_edca_parameter_set(hapd, p);
|
|
p = hostapd_eid_he_6ghz_band_cap(hapd, p);
|
|
}
|
|
#endif /* CONFIG_IEEE80211AX */
|
|
|
|
p = hostapd_eid_ext_capab(hapd, p);
|
|
p = hostapd_eid_bss_max_idle_period(hapd, p);
|
|
if (sta && sta->qos_map_enabled)
|
|
p = hostapd_eid_qos_map_set(hapd, p);
|
|
|
|
#ifdef CONFIG_FST
|
|
if (hapd->iface->fst_ies) {
|
|
os_memcpy(p, wpabuf_head(hapd->iface->fst_ies),
|
|
wpabuf_len(hapd->iface->fst_ies));
|
|
p += wpabuf_len(hapd->iface->fst_ies);
|
|
}
|
|
#endif /* CONFIG_FST */
|
|
|
|
#ifdef CONFIG_TESTING_OPTIONS
|
|
if (hapd->conf->rsnxe_override_ft &&
|
|
buf + buflen - p >=
|
|
(long int) wpabuf_len(hapd->conf->rsnxe_override_ft) &&
|
|
sta && sta->auth_alg == WLAN_AUTH_FT) {
|
|
wpa_printf(MSG_DEBUG, "TESTING: RSNXE FT override");
|
|
os_memcpy(p, wpabuf_head(hapd->conf->rsnxe_override_ft),
|
|
wpabuf_len(hapd->conf->rsnxe_override_ft));
|
|
p += wpabuf_len(hapd->conf->rsnxe_override_ft);
|
|
goto rsnxe_done;
|
|
}
|
|
#endif /* CONFIG_TESTING_OPTIONS */
|
|
if (!omit_rsnxe)
|
|
p = hostapd_eid_rsnxe(hapd, p, buf + buflen - p);
|
|
#ifdef CONFIG_TESTING_OPTIONS
|
|
rsnxe_done:
|
|
#endif /* CONFIG_TESTING_OPTIONS */
|
|
|
|
#ifdef CONFIG_OWE
|
|
if ((hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_OWE) &&
|
|
sta && sta->owe_ecdh && status_code == WLAN_STATUS_SUCCESS &&
|
|
wpa_auth_sta_key_mgmt(sta->wpa_sm) == WPA_KEY_MGMT_OWE &&
|
|
!wpa_auth_sta_get_pmksa(sta->wpa_sm)) {
|
|
struct wpabuf *pub;
|
|
|
|
pub = crypto_ecdh_get_pubkey(sta->owe_ecdh, 0);
|
|
if (!pub) {
|
|
res = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto done;
|
|
}
|
|
/* OWE Diffie-Hellman Parameter element */
|
|
*p++ = WLAN_EID_EXTENSION; /* Element ID */
|
|
*p++ = 1 + 2 + wpabuf_len(pub); /* Length */
|
|
*p++ = WLAN_EID_EXT_OWE_DH_PARAM; /* Element ID Extension */
|
|
WPA_PUT_LE16(p, sta->owe_group);
|
|
p += 2;
|
|
os_memcpy(p, wpabuf_head(pub), wpabuf_len(pub));
|
|
p += wpabuf_len(pub);
|
|
wpabuf_free(pub);
|
|
}
|
|
#endif /* CONFIG_OWE */
|
|
|
|
#ifdef CONFIG_DPP2
|
|
if (DPP_VERSION > 1 && (hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_DPP) &&
|
|
sta && sta->dpp_pfs && status_code == WLAN_STATUS_SUCCESS &&
|
|
wpa_auth_sta_key_mgmt(sta->wpa_sm) == WPA_KEY_MGMT_DPP) {
|
|
os_memcpy(p, wpabuf_head(sta->dpp_pfs->ie),
|
|
wpabuf_len(sta->dpp_pfs->ie));
|
|
p += wpabuf_len(sta->dpp_pfs->ie);
|
|
}
|
|
#endif /* CONFIG_DPP2 */
|
|
|
|
#ifdef CONFIG_IEEE80211AC
|
|
if (sta && hapd->conf->vendor_vht && (sta->flags & WLAN_STA_VENDOR_VHT))
|
|
p = hostapd_eid_vendor_vht(hapd, p);
|
|
#endif /* CONFIG_IEEE80211AC */
|
|
|
|
if (sta && (sta->flags & WLAN_STA_WMM))
|
|
p = hostapd_eid_wmm(hapd, p);
|
|
|
|
#ifdef CONFIG_WPS
|
|
if (sta &&
|
|
((sta->flags & WLAN_STA_WPS) ||
|
|
((sta->flags & WLAN_STA_MAYBE_WPS) && hapd->conf->wpa))) {
|
|
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 */
|
|
|
|
if (sta && (sta->flags & WLAN_STA_MULTI_AP))
|
|
p = hostapd_eid_multi_ap(hapd, p);
|
|
|
|
#ifdef CONFIG_P2P
|
|
if (sta && sta->p2p_ie && hapd->p2p_group) {
|
|
struct wpabuf *p2p_resp_ie;
|
|
enum p2p_status_code status;
|
|
switch (status_code) {
|
|
case WLAN_STATUS_SUCCESS:
|
|
status = P2P_SC_SUCCESS;
|
|
break;
|
|
case WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA:
|
|
status = P2P_SC_FAIL_LIMIT_REACHED;
|
|
break;
|
|
default:
|
|
status = P2P_SC_FAIL_INVALID_PARAMS;
|
|
break;
|
|
}
|
|
p2p_resp_ie = p2p_group_assoc_resp_ie(hapd->p2p_group, status);
|
|
if (p2p_resp_ie) {
|
|
os_memcpy(p, wpabuf_head(p2p_resp_ie),
|
|
wpabuf_len(p2p_resp_ie));
|
|
p += wpabuf_len(p2p_resp_ie);
|
|
wpabuf_free(p2p_resp_ie);
|
|
}
|
|
}
|
|
#endif /* CONFIG_P2P */
|
|
|
|
#ifdef CONFIG_P2P_MANAGER
|
|
if (hapd->conf->p2p & P2P_MANAGE)
|
|
p = hostapd_eid_p2p_manage(hapd, p);
|
|
#endif /* CONFIG_P2P_MANAGER */
|
|
|
|
p = hostapd_eid_mbo(hapd, p, buf + buflen - p);
|
|
|
|
if (hapd->conf->assocresp_elements &&
|
|
(size_t) (buf + buflen - p) >=
|
|
wpabuf_len(hapd->conf->assocresp_elements)) {
|
|
os_memcpy(p, wpabuf_head(hapd->conf->assocresp_elements),
|
|
wpabuf_len(hapd->conf->assocresp_elements));
|
|
p += wpabuf_len(hapd->conf->assocresp_elements);
|
|
}
|
|
|
|
send_len += p - reply->u.assoc_resp.variable;
|
|
|
|
#ifdef CONFIG_FILS
|
|
if (sta &&
|
|
(sta->auth_alg == WLAN_AUTH_FILS_SK ||
|
|
sta->auth_alg == WLAN_AUTH_FILS_SK_PFS ||
|
|
sta->auth_alg == WLAN_AUTH_FILS_PK) &&
|
|
status_code == WLAN_STATUS_SUCCESS) {
|
|
struct ieee802_11_elems elems;
|
|
|
|
if (ieee802_11_parse_elems(ies, ies_len, &elems, 0) ==
|
|
ParseFailed || !elems.fils_session) {
|
|
res = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto done;
|
|
}
|
|
|
|
/* FILS Session */
|
|
*p++ = WLAN_EID_EXTENSION; /* Element ID */
|
|
*p++ = 1 + FILS_SESSION_LEN; /* Length */
|
|
*p++ = WLAN_EID_EXT_FILS_SESSION; /* Element ID Extension */
|
|
os_memcpy(p, elems.fils_session, FILS_SESSION_LEN);
|
|
send_len += 2 + 1 + FILS_SESSION_LEN;
|
|
|
|
send_len = fils_encrypt_assoc(sta->wpa_sm, buf, send_len,
|
|
buflen, sta->fils_hlp_resp);
|
|
if (send_len < 0) {
|
|
res = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto done;
|
|
}
|
|
}
|
|
#endif /* CONFIG_FILS */
|
|
|
|
if (hostapd_drv_send_mlme(hapd, reply, send_len, 0, NULL, 0, 0) < 0) {
|
|
wpa_printf(MSG_INFO, "Failed to send assoc resp: %s",
|
|
strerror(errno));
|
|
res = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
}
|
|
|
|
done:
|
|
os_free(buf);
|
|
return res;
|
|
}
|
|
|
|
|
|
#ifdef CONFIG_OWE
|
|
u8 * owe_assoc_req_process(struct hostapd_data *hapd, struct sta_info *sta,
|
|
const u8 *owe_dh, u8 owe_dh_len,
|
|
u8 *owe_buf, size_t owe_buf_len, u16 *status)
|
|
{
|
|
#ifdef CONFIG_TESTING_OPTIONS
|
|
if (hapd->conf->own_ie_override) {
|
|
wpa_printf(MSG_DEBUG, "OWE: Using IE override");
|
|
*status = WLAN_STATUS_SUCCESS;
|
|
return wpa_auth_write_assoc_resp_owe(sta->wpa_sm, owe_buf,
|
|
owe_buf_len, NULL, 0);
|
|
}
|
|
#endif /* CONFIG_TESTING_OPTIONS */
|
|
|
|
if (wpa_auth_sta_get_pmksa(sta->wpa_sm)) {
|
|
wpa_printf(MSG_DEBUG, "OWE: Using PMKSA caching");
|
|
owe_buf = wpa_auth_write_assoc_resp_owe(sta->wpa_sm, owe_buf,
|
|
owe_buf_len, NULL, 0);
|
|
*status = WLAN_STATUS_SUCCESS;
|
|
return owe_buf;
|
|
}
|
|
|
|
if (sta->owe_pmk && sta->external_dh_updated) {
|
|
wpa_printf(MSG_DEBUG, "OWE: Using previously derived PMK");
|
|
*status = WLAN_STATUS_SUCCESS;
|
|
return owe_buf;
|
|
}
|
|
|
|
*status = owe_process_assoc_req(hapd, sta, owe_dh, owe_dh_len);
|
|
if (*status != WLAN_STATUS_SUCCESS)
|
|
return NULL;
|
|
|
|
owe_buf = wpa_auth_write_assoc_resp_owe(sta->wpa_sm, owe_buf,
|
|
owe_buf_len, NULL, 0);
|
|
|
|
if (sta->owe_ecdh && owe_buf) {
|
|
struct wpabuf *pub;
|
|
|
|
pub = crypto_ecdh_get_pubkey(sta->owe_ecdh, 0);
|
|
if (!pub) {
|
|
*status = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
return owe_buf;
|
|
}
|
|
|
|
/* OWE Diffie-Hellman Parameter element */
|
|
*owe_buf++ = WLAN_EID_EXTENSION; /* Element ID */
|
|
*owe_buf++ = 1 + 2 + wpabuf_len(pub); /* Length */
|
|
*owe_buf++ = WLAN_EID_EXT_OWE_DH_PARAM; /* Element ID Extension
|
|
*/
|
|
WPA_PUT_LE16(owe_buf, sta->owe_group);
|
|
owe_buf += 2;
|
|
os_memcpy(owe_buf, wpabuf_head(pub), wpabuf_len(pub));
|
|
owe_buf += wpabuf_len(pub);
|
|
wpabuf_free(pub);
|
|
}
|
|
|
|
return owe_buf;
|
|
}
|
|
#endif /* CONFIG_OWE */
|
|
|
|
|
|
#ifdef CONFIG_FILS
|
|
|
|
void fils_hlp_finish_assoc(struct hostapd_data *hapd, struct sta_info *sta)
|
|
{
|
|
u16 reply_res;
|
|
|
|
wpa_printf(MSG_DEBUG, "FILS: Finish association with " MACSTR,
|
|
MAC2STR(sta->addr));
|
|
eloop_cancel_timeout(fils_hlp_timeout, hapd, sta);
|
|
if (!sta->fils_pending_assoc_req)
|
|
return;
|
|
reply_res = send_assoc_resp(hapd, sta, sta->addr, WLAN_STATUS_SUCCESS,
|
|
sta->fils_pending_assoc_is_reassoc,
|
|
sta->fils_pending_assoc_req,
|
|
sta->fils_pending_assoc_req_len, 0, 0);
|
|
os_free(sta->fils_pending_assoc_req);
|
|
sta->fils_pending_assoc_req = NULL;
|
|
sta->fils_pending_assoc_req_len = 0;
|
|
wpabuf_free(sta->fils_hlp_resp);
|
|
sta->fils_hlp_resp = NULL;
|
|
wpabuf_free(sta->hlp_dhcp_discover);
|
|
sta->hlp_dhcp_discover = NULL;
|
|
|
|
/*
|
|
* Remove the station in case transmission of a success response fails.
|
|
* At this point the station was already added associated to the driver.
|
|
*/
|
|
if (reply_res != WLAN_STATUS_SUCCESS)
|
|
hostapd_drv_sta_remove(hapd, sta->addr);
|
|
}
|
|
|
|
|
|
void fils_hlp_timeout(void *eloop_ctx, void *eloop_data)
|
|
{
|
|
struct hostapd_data *hapd = eloop_ctx;
|
|
struct sta_info *sta = eloop_data;
|
|
|
|
wpa_printf(MSG_DEBUG,
|
|
"FILS: HLP response timeout - continue with association response for "
|
|
MACSTR, MAC2STR(sta->addr));
|
|
if (sta->fils_drv_assoc_finish)
|
|
hostapd_notify_assoc_fils_finish(hapd, sta);
|
|
else
|
|
fils_hlp_finish_assoc(hapd, sta);
|
|
}
|
|
|
|
#endif /* CONFIG_FILS */
|
|
|
|
|
|
static void handle_assoc(struct hostapd_data *hapd,
|
|
const struct ieee80211_mgmt *mgmt, size_t len,
|
|
int reassoc, int rssi)
|
|
{
|
|
u16 capab_info, listen_interval, seq_ctrl, fc;
|
|
int resp = WLAN_STATUS_SUCCESS;
|
|
u16 reply_res = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
const u8 *pos;
|
|
int left, i;
|
|
struct sta_info *sta;
|
|
u8 *tmp = NULL;
|
|
#ifdef CONFIG_FILS
|
|
int delay_assoc = 0;
|
|
#endif /* CONFIG_FILS */
|
|
int omit_rsnxe = 0;
|
|
|
|
if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_req) :
|
|
sizeof(mgmt->u.assoc_req))) {
|
|
wpa_printf(MSG_INFO, "handle_assoc(reassoc=%d) - too short payload (len=%lu)",
|
|
reassoc, (unsigned long) len);
|
|
return;
|
|
}
|
|
|
|
#ifdef CONFIG_TESTING_OPTIONS
|
|
if (reassoc) {
|
|
if (hapd->iconf->ignore_reassoc_probability > 0.0 &&
|
|
drand48() < hapd->iconf->ignore_reassoc_probability) {
|
|
wpa_printf(MSG_INFO,
|
|
"TESTING: ignoring reassoc request from "
|
|
MACSTR, MAC2STR(mgmt->sa));
|
|
return;
|
|
}
|
|
} else {
|
|
if (hapd->iconf->ignore_assoc_probability > 0.0 &&
|
|
drand48() < hapd->iconf->ignore_assoc_probability) {
|
|
wpa_printf(MSG_INFO,
|
|
"TESTING: ignoring assoc request from "
|
|
MACSTR, MAC2STR(mgmt->sa));
|
|
return;
|
|
}
|
|
}
|
|
#endif /* CONFIG_TESTING_OPTIONS */
|
|
|
|
fc = le_to_host16(mgmt->frame_control);
|
|
seq_ctrl = le_to_host16(mgmt->seq_ctrl);
|
|
|
|
if (reassoc) {
|
|
capab_info = le_to_host16(mgmt->u.reassoc_req.capab_info);
|
|
listen_interval = le_to_host16(
|
|
mgmt->u.reassoc_req.listen_interval);
|
|
wpa_printf(MSG_DEBUG, "reassociation request: STA=" MACSTR
|
|
" capab_info=0x%02x listen_interval=%d current_ap="
|
|
MACSTR " seq_ctrl=0x%x%s",
|
|
MAC2STR(mgmt->sa), capab_info, listen_interval,
|
|
MAC2STR(mgmt->u.reassoc_req.current_ap),
|
|
seq_ctrl, (fc & WLAN_FC_RETRY) ? " retry" : "");
|
|
left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.reassoc_req));
|
|
pos = mgmt->u.reassoc_req.variable;
|
|
} else {
|
|
capab_info = le_to_host16(mgmt->u.assoc_req.capab_info);
|
|
listen_interval = le_to_host16(
|
|
mgmt->u.assoc_req.listen_interval);
|
|
wpa_printf(MSG_DEBUG, "association request: STA=" MACSTR
|
|
" capab_info=0x%02x listen_interval=%d "
|
|
"seq_ctrl=0x%x%s",
|
|
MAC2STR(mgmt->sa), capab_info, listen_interval,
|
|
seq_ctrl, (fc & WLAN_FC_RETRY) ? " retry" : "");
|
|
left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.assoc_req));
|
|
pos = mgmt->u.assoc_req.variable;
|
|
}
|
|
|
|
sta = ap_get_sta(hapd, mgmt->sa);
|
|
#ifdef CONFIG_IEEE80211R_AP
|
|
if (sta && sta->auth_alg == WLAN_AUTH_FT &&
|
|
(sta->flags & WLAN_STA_AUTH) == 0) {
|
|
wpa_printf(MSG_DEBUG, "FT: Allow STA " MACSTR " to associate "
|
|
"prior to authentication since it is using "
|
|
"over-the-DS FT", MAC2STR(mgmt->sa));
|
|
|
|
/*
|
|
* Mark station as authenticated, to avoid adding station
|
|
* entry in the driver as associated and not authenticated
|
|
*/
|
|
sta->flags |= WLAN_STA_AUTH;
|
|
} else
|
|
#endif /* CONFIG_IEEE80211R_AP */
|
|
if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) {
|
|
if (hapd->iface->current_mode &&
|
|
hapd->iface->current_mode->mode ==
|
|
HOSTAPD_MODE_IEEE80211AD) {
|
|
int acl_res;
|
|
struct radius_sta info;
|
|
|
|
acl_res = ieee802_11_allowed_address(hapd, mgmt->sa,
|
|
(const u8 *) mgmt,
|
|
len, &info);
|
|
if (acl_res == HOSTAPD_ACL_REJECT) {
|
|
wpa_msg(hapd->msg_ctx, MSG_DEBUG,
|
|
"Ignore Association Request frame from "
|
|
MACSTR " due to ACL reject",
|
|
MAC2STR(mgmt->sa));
|
|
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto fail;
|
|
}
|
|
if (acl_res == HOSTAPD_ACL_PENDING)
|
|
return;
|
|
|
|
/* DMG/IEEE 802.11ad does not use authentication.
|
|
* Allocate sta entry upon association. */
|
|
sta = ap_sta_add(hapd, mgmt->sa);
|
|
if (!sta) {
|
|
hostapd_logger(hapd, mgmt->sa,
|
|
HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_INFO,
|
|
"Failed to add STA");
|
|
resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
|
|
goto fail;
|
|
}
|
|
|
|
acl_res = ieee802_11_set_radius_info(
|
|
hapd, sta, acl_res, &info);
|
|
if (acl_res) {
|
|
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto fail;
|
|
}
|
|
|
|
hostapd_logger(hapd, sta->addr,
|
|
HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_DEBUG,
|
|
"Skip authentication for DMG/IEEE 802.11ad");
|
|
sta->flags |= WLAN_STA_AUTH;
|
|
wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
|
|
sta->auth_alg = WLAN_AUTH_OPEN;
|
|
} else {
|
|
hostapd_logger(hapd, mgmt->sa,
|
|
HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_INFO,
|
|
"Station tried to associate before authentication (aid=%d flags=0x%x)",
|
|
sta ? sta->aid : -1,
|
|
sta ? sta->flags : 0);
|
|
send_deauth(hapd, mgmt->sa,
|
|
WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA);
|
|
return;
|
|
}
|
|
}
|
|
|
|
if ((fc & WLAN_FC_RETRY) &&
|
|
sta->last_seq_ctrl != WLAN_INVALID_MGMT_SEQ &&
|
|
sta->last_seq_ctrl == seq_ctrl &&
|
|
sta->last_subtype == (reassoc ? WLAN_FC_STYPE_REASSOC_REQ :
|
|
WLAN_FC_STYPE_ASSOC_REQ)) {
|
|
hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_DEBUG,
|
|
"Drop repeated association frame seq_ctrl=0x%x",
|
|
seq_ctrl);
|
|
return;
|
|
}
|
|
sta->last_seq_ctrl = seq_ctrl;
|
|
sta->last_subtype = reassoc ? WLAN_FC_STYPE_REASSOC_REQ :
|
|
WLAN_FC_STYPE_ASSOC_REQ;
|
|
|
|
if (hapd->tkip_countermeasures) {
|
|
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto fail;
|
|
}
|
|
|
|
if (listen_interval > hapd->conf->max_listen_interval) {
|
|
hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_DEBUG,
|
|
"Too large Listen Interval (%d)",
|
|
listen_interval);
|
|
resp = WLAN_STATUS_ASSOC_DENIED_LISTEN_INT_TOO_LARGE;
|
|
goto fail;
|
|
}
|
|
|
|
#ifdef CONFIG_MBO
|
|
if (hapd->conf->mbo_enabled && hapd->mbo_assoc_disallow) {
|
|
resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
|
|
goto fail;
|
|
}
|
|
|
|
if (hapd->iconf->rssi_reject_assoc_rssi && rssi &&
|
|
rssi < hapd->iconf->rssi_reject_assoc_rssi &&
|
|
(sta->auth_rssi == 0 ||
|
|
sta->auth_rssi < hapd->iconf->rssi_reject_assoc_rssi)) {
|
|
resp = WLAN_STATUS_DENIED_POOR_CHANNEL_CONDITIONS;
|
|
goto fail;
|
|
}
|
|
#endif /* CONFIG_MBO */
|
|
|
|
/*
|
|
* sta->capability is used in check_assoc_ies() for RRM enabled
|
|
* capability element.
|
|
*/
|
|
sta->capability = capab_info;
|
|
|
|
#ifdef CONFIG_FILS
|
|
if (sta->auth_alg == WLAN_AUTH_FILS_SK ||
|
|
sta->auth_alg == WLAN_AUTH_FILS_SK_PFS ||
|
|
sta->auth_alg == WLAN_AUTH_FILS_PK) {
|
|
int res;
|
|
|
|
/* The end of the payload is encrypted. Need to decrypt it
|
|
* before parsing. */
|
|
|
|
tmp = os_memdup(pos, left);
|
|
if (!tmp) {
|
|
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto fail;
|
|
}
|
|
|
|
res = fils_decrypt_assoc(sta->wpa_sm, sta->fils_session, mgmt,
|
|
len, tmp, left);
|
|
if (res < 0) {
|
|
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto fail;
|
|
}
|
|
pos = tmp;
|
|
left = res;
|
|
}
|
|
#endif /* CONFIG_FILS */
|
|
|
|
/* followed by SSID and Supported rates; and HT capabilities if 802.11n
|
|
* is used */
|
|
resp = check_assoc_ies(hapd, sta, pos, left, reassoc);
|
|
if (resp != WLAN_STATUS_SUCCESS)
|
|
goto fail;
|
|
omit_rsnxe = !get_ie(pos, left, WLAN_EID_RSNX);
|
|
|
|
if (hostapd_get_aid(hapd, sta) < 0) {
|
|
hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_INFO, "No room for more AIDs");
|
|
resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
|
|
goto fail;
|
|
}
|
|
|
|
sta->listen_interval = listen_interval;
|
|
|
|
if (hapd->iface->current_mode &&
|
|
hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G)
|
|
sta->flags |= WLAN_STA_NONERP;
|
|
for (i = 0; i < sta->supported_rates_len; i++) {
|
|
if ((sta->supported_rates[i] & 0x7f) > 22) {
|
|
sta->flags &= ~WLAN_STA_NONERP;
|
|
break;
|
|
}
|
|
}
|
|
if (sta->flags & WLAN_STA_NONERP && !sta->nonerp_set) {
|
|
sta->nonerp_set = 1;
|
|
hapd->iface->num_sta_non_erp++;
|
|
if (hapd->iface->num_sta_non_erp == 1)
|
|
ieee802_11_set_beacons(hapd->iface);
|
|
}
|
|
|
|
if (!(sta->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) &&
|
|
!sta->no_short_slot_time_set) {
|
|
sta->no_short_slot_time_set = 1;
|
|
hapd->iface->num_sta_no_short_slot_time++;
|
|
if (hapd->iface->current_mode &&
|
|
hapd->iface->current_mode->mode ==
|
|
HOSTAPD_MODE_IEEE80211G &&
|
|
hapd->iface->num_sta_no_short_slot_time == 1)
|
|
ieee802_11_set_beacons(hapd->iface);
|
|
}
|
|
|
|
if (sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
|
|
sta->flags |= WLAN_STA_SHORT_PREAMBLE;
|
|
else
|
|
sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
|
|
|
|
if (!(sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) &&
|
|
!sta->no_short_preamble_set) {
|
|
sta->no_short_preamble_set = 1;
|
|
hapd->iface->num_sta_no_short_preamble++;
|
|
if (hapd->iface->current_mode &&
|
|
hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
|
|
&& hapd->iface->num_sta_no_short_preamble == 1)
|
|
ieee802_11_set_beacons(hapd->iface);
|
|
}
|
|
|
|
update_ht_state(hapd, sta);
|
|
|
|
hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_DEBUG,
|
|
"association OK (aid %d)", sta->aid);
|
|
/* Station will be marked associated, after it acknowledges AssocResp
|
|
*/
|
|
sta->flags |= WLAN_STA_ASSOC_REQ_OK;
|
|
|
|
if ((sta->flags & WLAN_STA_MFP) && sta->sa_query_timed_out) {
|
|
wpa_printf(MSG_DEBUG, "Allowing %sassociation after timed out "
|
|
"SA Query procedure", reassoc ? "re" : "");
|
|
/* TODO: Send a protected Disassociate frame to the STA using
|
|
* the old key and Reason Code "Previous Authentication no
|
|
* longer valid". Make sure this is only sent protected since
|
|
* unprotected frame would be received by the STA that is now
|
|
* trying to associate.
|
|
*/
|
|
}
|
|
|
|
/* Make sure that the previously registered inactivity timer will not
|
|
* remove the STA immediately. */
|
|
sta->timeout_next = STA_NULLFUNC;
|
|
|
|
#ifdef CONFIG_TAXONOMY
|
|
taxonomy_sta_info_assoc_req(hapd, sta, pos, left);
|
|
#endif /* CONFIG_TAXONOMY */
|
|
|
|
sta->pending_wds_enable = 0;
|
|
|
|
#ifdef CONFIG_FILS
|
|
if (sta->auth_alg == WLAN_AUTH_FILS_SK ||
|
|
sta->auth_alg == WLAN_AUTH_FILS_SK_PFS ||
|
|
sta->auth_alg == WLAN_AUTH_FILS_PK) {
|
|
if (fils_process_hlp(hapd, sta, pos, left) > 0)
|
|
delay_assoc = 1;
|
|
}
|
|
#endif /* CONFIG_FILS */
|
|
|
|
fail:
|
|
|
|
/*
|
|
* In case of a successful response, add the station to the driver.
|
|
* Otherwise, the kernel may ignore Data frames before we process the
|
|
* ACK frame (TX status). In case of a failure, this station will be
|
|
* removed.
|
|
*
|
|
* Note that this is not compliant with the IEEE 802.11 standard that
|
|
* states that a non-AP station should transition into the
|
|
* authenticated/associated state only after the station acknowledges
|
|
* the (Re)Association Response frame. However, still do this as:
|
|
*
|
|
* 1. In case the station does not acknowledge the (Re)Association
|
|
* Response frame, it will be removed.
|
|
* 2. Data frames will be dropped in the kernel until the station is
|
|
* set into authorized state, and there are no significant known
|
|
* issues with processing other non-Data Class 3 frames during this
|
|
* window.
|
|
*/
|
|
if (resp == WLAN_STATUS_SUCCESS && sta &&
|
|
add_associated_sta(hapd, sta, reassoc))
|
|
resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
|
|
|
|
#ifdef CONFIG_FILS
|
|
if (sta && delay_assoc && resp == WLAN_STATUS_SUCCESS &&
|
|
eloop_is_timeout_registered(fils_hlp_timeout, hapd, sta) &&
|
|
sta->fils_pending_assoc_req) {
|
|
/* Do not reschedule fils_hlp_timeout in case the station
|
|
* retransmits (Re)Association Request frame while waiting for
|
|
* the previously started FILS HLP wait, so that the timeout can
|
|
* be determined from the first pending attempt. */
|
|
wpa_printf(MSG_DEBUG,
|
|
"FILS: Continue waiting for HLP processing before sending (Re)Association Response frame to "
|
|
MACSTR, MAC2STR(sta->addr));
|
|
os_free(tmp);
|
|
return;
|
|
}
|
|
if (sta) {
|
|
eloop_cancel_timeout(fils_hlp_timeout, hapd, sta);
|
|
os_free(sta->fils_pending_assoc_req);
|
|
sta->fils_pending_assoc_req = NULL;
|
|
sta->fils_pending_assoc_req_len = 0;
|
|
wpabuf_free(sta->fils_hlp_resp);
|
|
sta->fils_hlp_resp = NULL;
|
|
}
|
|
if (sta && delay_assoc && resp == WLAN_STATUS_SUCCESS) {
|
|
sta->fils_pending_assoc_req = tmp;
|
|
sta->fils_pending_assoc_req_len = left;
|
|
sta->fils_pending_assoc_is_reassoc = reassoc;
|
|
sta->fils_drv_assoc_finish = 0;
|
|
wpa_printf(MSG_DEBUG,
|
|
"FILS: Waiting for HLP processing before sending (Re)Association Response frame to "
|
|
MACSTR, MAC2STR(sta->addr));
|
|
eloop_cancel_timeout(fils_hlp_timeout, hapd, sta);
|
|
eloop_register_timeout(0, hapd->conf->fils_hlp_wait_time * 1024,
|
|
fils_hlp_timeout, hapd, sta);
|
|
return;
|
|
}
|
|
#endif /* CONFIG_FILS */
|
|
|
|
if (resp >= 0)
|
|
reply_res = send_assoc_resp(hapd, sta, mgmt->sa, resp, reassoc,
|
|
pos, left, rssi, omit_rsnxe);
|
|
os_free(tmp);
|
|
|
|
/*
|
|
* Remove the station in case transmission of a success response fails
|
|
* (the STA was added associated to the driver) or if the station was
|
|
* previously added unassociated.
|
|
*/
|
|
if (sta && ((reply_res != WLAN_STATUS_SUCCESS &&
|
|
resp == WLAN_STATUS_SUCCESS) || sta->added_unassoc)) {
|
|
hostapd_drv_sta_remove(hapd, sta->addr);
|
|
sta->added_unassoc = 0;
|
|
}
|
|
}
|
|
|
|
|
|
static void handle_disassoc(struct hostapd_data *hapd,
|
|
const struct ieee80211_mgmt *mgmt, size_t len)
|
|
{
|
|
struct sta_info *sta;
|
|
|
|
if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.disassoc)) {
|
|
wpa_printf(MSG_INFO, "handle_disassoc - too short payload (len=%lu)",
|
|
(unsigned long) len);
|
|
return;
|
|
}
|
|
|
|
wpa_printf(MSG_DEBUG, "disassocation: STA=" MACSTR " reason_code=%d",
|
|
MAC2STR(mgmt->sa),
|
|
le_to_host16(mgmt->u.disassoc.reason_code));
|
|
|
|
sta = ap_get_sta(hapd, mgmt->sa);
|
|
if (sta == NULL) {
|
|
wpa_printf(MSG_INFO, "Station " MACSTR " trying to disassociate, but it is not associated",
|
|
MAC2STR(mgmt->sa));
|
|
return;
|
|
}
|
|
|
|
ap_sta_set_authorized(hapd, sta, 0);
|
|
sta->last_seq_ctrl = WLAN_INVALID_MGMT_SEQ;
|
|
sta->flags &= ~(WLAN_STA_ASSOC | WLAN_STA_ASSOC_REQ_OK);
|
|
hostapd_set_sta_flags(hapd, sta);
|
|
wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
|
|
hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_INFO, "disassociated");
|
|
sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
|
|
ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
|
|
/* Stop Accounting and IEEE 802.1X sessions, but leave the STA
|
|
* authenticated. */
|
|
accounting_sta_stop(hapd, sta);
|
|
ieee802_1x_free_station(hapd, sta);
|
|
if (sta->ipaddr)
|
|
hostapd_drv_br_delete_ip_neigh(hapd, 4, (u8 *) &sta->ipaddr);
|
|
ap_sta_ip6addr_del(hapd, sta);
|
|
hostapd_drv_sta_remove(hapd, sta->addr);
|
|
sta->added_unassoc = 0;
|
|
|
|
if (sta->timeout_next == STA_NULLFUNC ||
|
|
sta->timeout_next == STA_DISASSOC) {
|
|
sta->timeout_next = STA_DEAUTH;
|
|
eloop_cancel_timeout(ap_handle_timer, hapd, sta);
|
|
eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
|
|
hapd, sta);
|
|
}
|
|
|
|
mlme_disassociate_indication(
|
|
hapd, sta, le_to_host16(mgmt->u.disassoc.reason_code));
|
|
|
|
/* DMG/IEEE 802.11ad does not use deauthication. Deallocate sta upon
|
|
* disassociation. */
|
|
if (hapd->iface->current_mode &&
|
|
hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211AD) {
|
|
sta->flags &= ~WLAN_STA_AUTH;
|
|
wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH);
|
|
hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_DEBUG, "deauthenticated");
|
|
ap_free_sta(hapd, sta);
|
|
}
|
|
}
|
|
|
|
|
|
static void handle_deauth(struct hostapd_data *hapd,
|
|
const struct ieee80211_mgmt *mgmt, size_t len)
|
|
{
|
|
struct sta_info *sta;
|
|
|
|
if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.deauth)) {
|
|
wpa_msg(hapd->msg_ctx, MSG_DEBUG, "handle_deauth - too short "
|
|
"payload (len=%lu)", (unsigned long) len);
|
|
return;
|
|
}
|
|
|
|
wpa_msg(hapd->msg_ctx, MSG_DEBUG, "deauthentication: STA=" MACSTR
|
|
" reason_code=%d",
|
|
MAC2STR(mgmt->sa), le_to_host16(mgmt->u.deauth.reason_code));
|
|
|
|
/* Clear the PTKSA cache entries for PASN */
|
|
ptksa_cache_flush(hapd->ptksa, mgmt->sa, WPA_CIPHER_NONE);
|
|
|
|
sta = ap_get_sta(hapd, mgmt->sa);
|
|
if (sta == NULL) {
|
|
wpa_msg(hapd->msg_ctx, MSG_DEBUG, "Station " MACSTR " trying "
|
|
"to deauthenticate, but it is not authenticated",
|
|
MAC2STR(mgmt->sa));
|
|
return;
|
|
}
|
|
|
|
ap_sta_set_authorized(hapd, sta, 0);
|
|
sta->last_seq_ctrl = WLAN_INVALID_MGMT_SEQ;
|
|
sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC |
|
|
WLAN_STA_ASSOC_REQ_OK);
|
|
hostapd_set_sta_flags(hapd, sta);
|
|
wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH);
|
|
hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_DEBUG, "deauthenticated");
|
|
mlme_deauthenticate_indication(
|
|
hapd, sta, le_to_host16(mgmt->u.deauth.reason_code));
|
|
sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
|
|
ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
|
|
ap_free_sta(hapd, sta);
|
|
}
|
|
|
|
|
|
static void handle_beacon(struct hostapd_data *hapd,
|
|
const struct ieee80211_mgmt *mgmt, size_t len,
|
|
struct hostapd_frame_info *fi)
|
|
{
|
|
struct ieee802_11_elems elems;
|
|
|
|
if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.beacon)) {
|
|
wpa_printf(MSG_INFO, "handle_beacon - too short payload (len=%lu)",
|
|
(unsigned long) len);
|
|
return;
|
|
}
|
|
|
|
(void) ieee802_11_parse_elems(mgmt->u.beacon.variable,
|
|
len - (IEEE80211_HDRLEN +
|
|
sizeof(mgmt->u.beacon)), &elems,
|
|
0);
|
|
|
|
ap_list_process_beacon(hapd->iface, mgmt, &elems, fi);
|
|
}
|
|
|
|
|
|
static int robust_action_frame(u8 category)
|
|
{
|
|
return category != WLAN_ACTION_PUBLIC &&
|
|
category != WLAN_ACTION_HT;
|
|
}
|
|
|
|
|
|
static int handle_action(struct hostapd_data *hapd,
|
|
const struct ieee80211_mgmt *mgmt, size_t len,
|
|
unsigned int freq)
|
|
{
|
|
struct sta_info *sta;
|
|
u8 *action __maybe_unused;
|
|
|
|
if (len < IEEE80211_HDRLEN + 2 + 1) {
|
|
hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_DEBUG,
|
|
"handle_action - too short payload (len=%lu)",
|
|
(unsigned long) len);
|
|
return 0;
|
|
}
|
|
|
|
action = (u8 *) &mgmt->u.action.u;
|
|
wpa_printf(MSG_DEBUG, "RX_ACTION category %u action %u sa " MACSTR
|
|
" da " MACSTR " len %d freq %u",
|
|
mgmt->u.action.category, *action,
|
|
MAC2STR(mgmt->sa), MAC2STR(mgmt->da), (int) len, freq);
|
|
|
|
sta = ap_get_sta(hapd, mgmt->sa);
|
|
|
|
if (mgmt->u.action.category != WLAN_ACTION_PUBLIC &&
|
|
(sta == NULL || !(sta->flags & WLAN_STA_ASSOC))) {
|
|
wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignored Action "
|
|
"frame (category=%u) from unassociated STA " MACSTR,
|
|
mgmt->u.action.category, MAC2STR(mgmt->sa));
|
|
return 0;
|
|
}
|
|
|
|
if (sta && (sta->flags & WLAN_STA_MFP) &&
|
|
!(mgmt->frame_control & host_to_le16(WLAN_FC_ISWEP)) &&
|
|
robust_action_frame(mgmt->u.action.category)) {
|
|
hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_DEBUG,
|
|
"Dropped unprotected Robust Action frame from "
|
|
"an MFP STA");
|
|
return 0;
|
|
}
|
|
|
|
if (sta) {
|
|
u16 fc = le_to_host16(mgmt->frame_control);
|
|
u16 seq_ctrl = le_to_host16(mgmt->seq_ctrl);
|
|
|
|
if ((fc & WLAN_FC_RETRY) &&
|
|
sta->last_seq_ctrl != WLAN_INVALID_MGMT_SEQ &&
|
|
sta->last_seq_ctrl == seq_ctrl &&
|
|
sta->last_subtype == WLAN_FC_STYPE_ACTION) {
|
|
hostapd_logger(hapd, sta->addr,
|
|
HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_DEBUG,
|
|
"Drop repeated action frame seq_ctrl=0x%x",
|
|
seq_ctrl);
|
|
return 1;
|
|
}
|
|
|
|
sta->last_seq_ctrl = seq_ctrl;
|
|
sta->last_subtype = WLAN_FC_STYPE_ACTION;
|
|
}
|
|
|
|
switch (mgmt->u.action.category) {
|
|
#ifdef CONFIG_IEEE80211R_AP
|
|
case WLAN_ACTION_FT:
|
|
if (!sta ||
|
|
wpa_ft_action_rx(sta->wpa_sm, (u8 *) &mgmt->u.action,
|
|
len - IEEE80211_HDRLEN))
|
|
break;
|
|
return 1;
|
|
#endif /* CONFIG_IEEE80211R_AP */
|
|
case WLAN_ACTION_WMM:
|
|
hostapd_wmm_action(hapd, mgmt, len);
|
|
return 1;
|
|
case WLAN_ACTION_SA_QUERY:
|
|
ieee802_11_sa_query_action(hapd, mgmt, len);
|
|
return 1;
|
|
#ifdef CONFIG_WNM_AP
|
|
case WLAN_ACTION_WNM:
|
|
ieee802_11_rx_wnm_action_ap(hapd, mgmt, len);
|
|
return 1;
|
|
#endif /* CONFIG_WNM_AP */
|
|
#ifdef CONFIG_FST
|
|
case WLAN_ACTION_FST:
|
|
if (hapd->iface->fst)
|
|
fst_rx_action(hapd->iface->fst, mgmt, len);
|
|
else
|
|
wpa_printf(MSG_DEBUG,
|
|
"FST: Ignore FST Action frame - no FST attached");
|
|
return 1;
|
|
#endif /* CONFIG_FST */
|
|
case WLAN_ACTION_PUBLIC:
|
|
case WLAN_ACTION_PROTECTED_DUAL:
|
|
if (len >= IEEE80211_HDRLEN + 2 &&
|
|
mgmt->u.action.u.public_action.action ==
|
|
WLAN_PA_20_40_BSS_COEX) {
|
|
hostapd_2040_coex_action(hapd, mgmt, len);
|
|
return 1;
|
|
}
|
|
#ifdef CONFIG_DPP
|
|
if (len >= IEEE80211_HDRLEN + 6 &&
|
|
mgmt->u.action.u.vs_public_action.action ==
|
|
WLAN_PA_VENDOR_SPECIFIC &&
|
|
WPA_GET_BE24(mgmt->u.action.u.vs_public_action.oui) ==
|
|
OUI_WFA &&
|
|
mgmt->u.action.u.vs_public_action.variable[0] ==
|
|
DPP_OUI_TYPE) {
|
|
const u8 *pos, *end;
|
|
|
|
pos = mgmt->u.action.u.vs_public_action.oui;
|
|
end = ((const u8 *) mgmt) + len;
|
|
hostapd_dpp_rx_action(hapd, mgmt->sa, pos, end - pos,
|
|
freq);
|
|
return 1;
|
|
}
|
|
if (len >= IEEE80211_HDRLEN + 2 &&
|
|
(mgmt->u.action.u.public_action.action ==
|
|
WLAN_PA_GAS_INITIAL_RESP ||
|
|
mgmt->u.action.u.public_action.action ==
|
|
WLAN_PA_GAS_COMEBACK_RESP)) {
|
|
const u8 *pos, *end;
|
|
|
|
pos = &mgmt->u.action.u.public_action.action;
|
|
end = ((const u8 *) mgmt) + len;
|
|
gas_query_ap_rx(hapd->gas, mgmt->sa,
|
|
mgmt->u.action.category,
|
|
pos, end - pos, hapd->iface->freq);
|
|
return 1;
|
|
}
|
|
#endif /* CONFIG_DPP */
|
|
if (hapd->public_action_cb) {
|
|
hapd->public_action_cb(hapd->public_action_cb_ctx,
|
|
(u8 *) mgmt, len,
|
|
hapd->iface->freq);
|
|
}
|
|
if (hapd->public_action_cb2) {
|
|
hapd->public_action_cb2(hapd->public_action_cb2_ctx,
|
|
(u8 *) mgmt, len,
|
|
hapd->iface->freq);
|
|
}
|
|
if (hapd->public_action_cb || hapd->public_action_cb2)
|
|
return 1;
|
|
break;
|
|
case WLAN_ACTION_VENDOR_SPECIFIC:
|
|
if (hapd->vendor_action_cb) {
|
|
if (hapd->vendor_action_cb(hapd->vendor_action_cb_ctx,
|
|
(u8 *) mgmt, len,
|
|
hapd->iface->freq) == 0)
|
|
return 1;
|
|
}
|
|
break;
|
|
case WLAN_ACTION_RADIO_MEASUREMENT:
|
|
hostapd_handle_radio_measurement(hapd, (const u8 *) mgmt, len);
|
|
return 1;
|
|
}
|
|
|
|
hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_DEBUG,
|
|
"handle_action - unknown action category %d or invalid "
|
|
"frame",
|
|
mgmt->u.action.category);
|
|
if (!is_multicast_ether_addr(mgmt->da) &&
|
|
!(mgmt->u.action.category & 0x80) &&
|
|
!is_multicast_ether_addr(mgmt->sa)) {
|
|
struct ieee80211_mgmt *resp;
|
|
|
|
/*
|
|
* IEEE 802.11-REVma/D9.0 - 7.3.1.11
|
|
* Return the Action frame to the source without change
|
|
* except that MSB of the Category set to 1.
|
|
*/
|
|
wpa_printf(MSG_DEBUG, "IEEE 802.11: Return unknown Action "
|
|
"frame back to sender");
|
|
resp = os_memdup(mgmt, len);
|
|
if (resp == NULL)
|
|
return 0;
|
|
os_memcpy(resp->da, resp->sa, ETH_ALEN);
|
|
os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN);
|
|
os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN);
|
|
resp->u.action.category |= 0x80;
|
|
|
|
if (hostapd_drv_send_mlme(hapd, resp, len, 0, NULL, 0, 0) < 0) {
|
|
wpa_printf(MSG_ERROR, "IEEE 802.11: Failed to send "
|
|
"Action frame");
|
|
}
|
|
os_free(resp);
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
|
|
/**
|
|
* notify_mgmt_frame - Notify of Management frames on the control interface
|
|
* @hapd: hostapd BSS data structure (the BSS to which the Management frame was
|
|
* sent to)
|
|
* @buf: Management frame data (starting from the IEEE 802.11 header)
|
|
* @len: Length of frame data in octets
|
|
*
|
|
* Notify the control interface of any received Management frame.
|
|
*/
|
|
static void notify_mgmt_frame(struct hostapd_data *hapd, const u8 *buf,
|
|
size_t len)
|
|
{
|
|
|
|
int hex_len = len * 2 + 1;
|
|
char *hex = os_malloc(hex_len);
|
|
|
|
if (hex) {
|
|
wpa_snprintf_hex(hex, hex_len, buf, len);
|
|
wpa_msg_ctrl(hapd->msg_ctx, MSG_INFO,
|
|
AP_MGMT_FRAME_RECEIVED "buf=%s", hex);
|
|
os_free(hex);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* ieee802_11_mgmt - process incoming IEEE 802.11 management frames
|
|
* @hapd: hostapd BSS data structure (the BSS to which the management frame was
|
|
* sent to)
|
|
* @buf: management frame data (starting from IEEE 802.11 header)
|
|
* @len: length of frame data in octets
|
|
* @fi: meta data about received frame (signal level, etc.)
|
|
*
|
|
* Process all incoming IEEE 802.11 management frames. This will be called for
|
|
* each frame received from the kernel driver through wlan#ap interface. In
|
|
* addition, it can be called to re-inserted pending frames (e.g., when using
|
|
* external RADIUS server as an MAC ACL).
|
|
*/
|
|
int ieee802_11_mgmt(struct hostapd_data *hapd, const u8 *buf, size_t len,
|
|
struct hostapd_frame_info *fi)
|
|
{
|
|
struct ieee80211_mgmt *mgmt;
|
|
u16 fc, stype;
|
|
int ret = 0;
|
|
unsigned int freq;
|
|
int ssi_signal = fi ? fi->ssi_signal : 0;
|
|
|
|
if (len < 24)
|
|
return 0;
|
|
|
|
if (fi && fi->freq)
|
|
freq = fi->freq;
|
|
else
|
|
freq = hapd->iface->freq;
|
|
|
|
mgmt = (struct ieee80211_mgmt *) buf;
|
|
fc = le_to_host16(mgmt->frame_control);
|
|
stype = WLAN_FC_GET_STYPE(fc);
|
|
|
|
if (is_multicast_ether_addr(mgmt->sa) ||
|
|
is_zero_ether_addr(mgmt->sa) ||
|
|
os_memcmp(mgmt->sa, hapd->own_addr, ETH_ALEN) == 0) {
|
|
/* Do not process any frames with unexpected/invalid SA so that
|
|
* we do not add any state for unexpected STA addresses or end
|
|
* up sending out frames to unexpected destination. */
|
|
wpa_printf(MSG_DEBUG, "MGMT: Invalid SA=" MACSTR
|
|
" in received frame - ignore this frame silently",
|
|
MAC2STR(mgmt->sa));
|
|
return 0;
|
|
}
|
|
|
|
if (stype == WLAN_FC_STYPE_BEACON) {
|
|
handle_beacon(hapd, mgmt, len, fi);
|
|
return 1;
|
|
}
|
|
|
|
if (!is_broadcast_ether_addr(mgmt->bssid) &&
|
|
#ifdef CONFIG_P2P
|
|
/* Invitation responses can be sent with the peer MAC as BSSID */
|
|
!((hapd->conf->p2p & P2P_GROUP_OWNER) &&
|
|
stype == WLAN_FC_STYPE_ACTION) &&
|
|
#endif /* CONFIG_P2P */
|
|
#ifdef CONFIG_MESH
|
|
!(hapd->conf->mesh & MESH_ENABLED) &&
|
|
#endif /* CONFIG_MESH */
|
|
os_memcmp(mgmt->bssid, hapd->own_addr, ETH_ALEN) != 0) {
|
|
wpa_printf(MSG_INFO, "MGMT: BSSID=" MACSTR " not our address",
|
|
MAC2STR(mgmt->bssid));
|
|
return 0;
|
|
}
|
|
|
|
if (hapd->iface->state != HAPD_IFACE_ENABLED) {
|
|
wpa_printf(MSG_DEBUG, "MGMT: Ignore management frame while interface is not enabled (SA=" MACSTR " DA=" MACSTR " subtype=%u)",
|
|
MAC2STR(mgmt->sa), MAC2STR(mgmt->da), stype);
|
|
return 1;
|
|
}
|
|
|
|
if (stype == WLAN_FC_STYPE_PROBE_REQ) {
|
|
handle_probe_req(hapd, mgmt, len, ssi_signal);
|
|
return 1;
|
|
}
|
|
|
|
if ((!is_broadcast_ether_addr(mgmt->da) ||
|
|
stype != WLAN_FC_STYPE_ACTION) &&
|
|
os_memcmp(mgmt->da, hapd->own_addr, ETH_ALEN) != 0) {
|
|
hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_DEBUG,
|
|
"MGMT: DA=" MACSTR " not our address",
|
|
MAC2STR(mgmt->da));
|
|
return 0;
|
|
}
|
|
|
|
if (hapd->iconf->track_sta_max_num)
|
|
sta_track_add(hapd->iface, mgmt->sa, ssi_signal);
|
|
|
|
if (hapd->conf->notify_mgmt_frames)
|
|
notify_mgmt_frame(hapd, buf, len);
|
|
|
|
switch (stype) {
|
|
case WLAN_FC_STYPE_AUTH:
|
|
wpa_printf(MSG_DEBUG, "mgmt::auth");
|
|
handle_auth(hapd, mgmt, len, ssi_signal, 0);
|
|
ret = 1;
|
|
break;
|
|
case WLAN_FC_STYPE_ASSOC_REQ:
|
|
wpa_printf(MSG_DEBUG, "mgmt::assoc_req");
|
|
handle_assoc(hapd, mgmt, len, 0, ssi_signal);
|
|
ret = 1;
|
|
break;
|
|
case WLAN_FC_STYPE_REASSOC_REQ:
|
|
wpa_printf(MSG_DEBUG, "mgmt::reassoc_req");
|
|
handle_assoc(hapd, mgmt, len, 1, ssi_signal);
|
|
ret = 1;
|
|
break;
|
|
case WLAN_FC_STYPE_DISASSOC:
|
|
wpa_printf(MSG_DEBUG, "mgmt::disassoc");
|
|
handle_disassoc(hapd, mgmt, len);
|
|
ret = 1;
|
|
break;
|
|
case WLAN_FC_STYPE_DEAUTH:
|
|
wpa_msg(hapd->msg_ctx, MSG_DEBUG, "mgmt::deauth");
|
|
handle_deauth(hapd, mgmt, len);
|
|
ret = 1;
|
|
break;
|
|
case WLAN_FC_STYPE_ACTION:
|
|
wpa_printf(MSG_DEBUG, "mgmt::action");
|
|
ret = handle_action(hapd, mgmt, len, freq);
|
|
break;
|
|
default:
|
|
hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_DEBUG,
|
|
"unknown mgmt frame subtype %d", stype);
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
static void handle_auth_cb(struct hostapd_data *hapd,
|
|
const struct ieee80211_mgmt *mgmt,
|
|
size_t len, int ok)
|
|
{
|
|
u16 auth_alg, auth_transaction, status_code;
|
|
struct sta_info *sta;
|
|
bool success_status;
|
|
|
|
sta = ap_get_sta(hapd, mgmt->da);
|
|
if (!sta) {
|
|
wpa_printf(MSG_DEBUG, "handle_auth_cb: STA " MACSTR
|
|
" not found",
|
|
MAC2STR(mgmt->da));
|
|
return;
|
|
}
|
|
|
|
if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
|
|
wpa_printf(MSG_INFO, "handle_auth_cb - too short payload (len=%lu)",
|
|
(unsigned long) len);
|
|
auth_alg = 0;
|
|
auth_transaction = 0;
|
|
status_code = WLAN_STATUS_UNSPECIFIED_FAILURE;
|
|
goto fail;
|
|
}
|
|
|
|
auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
|
|
auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
|
|
status_code = le_to_host16(mgmt->u.auth.status_code);
|
|
|
|
if (!ok) {
|
|
hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_NOTICE,
|
|
"did not acknowledge authentication response");
|
|
goto fail;
|
|
}
|
|
|
|
if (status_code == WLAN_STATUS_SUCCESS &&
|
|
((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) ||
|
|
(auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) {
|
|
hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_INFO, "authenticated");
|
|
sta->flags |= WLAN_STA_AUTH;
|
|
if (sta->added_unassoc)
|
|
hostapd_set_sta_flags(hapd, sta);
|
|
return;
|
|
}
|
|
|
|
fail:
|
|
success_status = status_code == WLAN_STATUS_SUCCESS;
|
|
#ifdef CONFIG_SAE
|
|
if (auth_alg == WLAN_AUTH_SAE && auth_transaction == 1)
|
|
success_status = sae_status_success(hapd, status_code);
|
|
#endif /* CONFIG_SAE */
|
|
if (!success_status && sta->added_unassoc) {
|
|
hostapd_drv_sta_remove(hapd, sta->addr);
|
|
sta->added_unassoc = 0;
|
|
}
|
|
}
|
|
|
|
|
|
static void hostapd_set_wds_encryption(struct hostapd_data *hapd,
|
|
struct sta_info *sta,
|
|
char *ifname_wds)
|
|
{
|
|
#ifdef CONFIG_WEP
|
|
int i;
|
|
struct hostapd_ssid *ssid = &hapd->conf->ssid;
|
|
|
|
if (hapd->conf->ieee802_1x || hapd->conf->wpa)
|
|
return;
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
if (ssid->wep.key[i] &&
|
|
hostapd_drv_set_key(ifname_wds, hapd, WPA_ALG_WEP, NULL, i,
|
|
0, i == ssid->wep.idx, NULL, 0,
|
|
ssid->wep.key[i], ssid->wep.len[i],
|
|
i == ssid->wep.idx ?
|
|
KEY_FLAG_GROUP_RX_TX_DEFAULT :
|
|
KEY_FLAG_GROUP_RX_TX)) {
|
|
wpa_printf(MSG_WARNING,
|
|
"Could not set WEP keys for WDS interface; %s",
|
|
ifname_wds);
|
|
break;
|
|
}
|
|
}
|
|
#endif /* CONFIG_WEP */
|
|
}
|
|
|
|
|
|
static void handle_assoc_cb(struct hostapd_data *hapd,
|
|
const struct ieee80211_mgmt *mgmt,
|
|
size_t len, int reassoc, int ok)
|
|
{
|
|
u16 status;
|
|
struct sta_info *sta;
|
|
int new_assoc = 1;
|
|
|
|
sta = ap_get_sta(hapd, mgmt->da);
|
|
if (!sta) {
|
|
wpa_printf(MSG_INFO, "handle_assoc_cb: STA " MACSTR " not found",
|
|
MAC2STR(mgmt->da));
|
|
return;
|
|
}
|
|
|
|
if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_resp) :
|
|
sizeof(mgmt->u.assoc_resp))) {
|
|
wpa_printf(MSG_INFO,
|
|
"handle_assoc_cb(reassoc=%d) - too short payload (len=%lu)",
|
|
reassoc, (unsigned long) len);
|
|
hostapd_drv_sta_remove(hapd, sta->addr);
|
|
return;
|
|
}
|
|
|
|
if (reassoc)
|
|
status = le_to_host16(mgmt->u.reassoc_resp.status_code);
|
|
else
|
|
status = le_to_host16(mgmt->u.assoc_resp.status_code);
|
|
|
|
if (!ok) {
|
|
hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_DEBUG,
|
|
"did not acknowledge association response");
|
|
sta->flags &= ~WLAN_STA_ASSOC_REQ_OK;
|
|
/* The STA is added only in case of SUCCESS */
|
|
if (status == WLAN_STATUS_SUCCESS)
|
|
hostapd_drv_sta_remove(hapd, sta->addr);
|
|
|
|
return;
|
|
}
|
|
|
|
if (status != WLAN_STATUS_SUCCESS)
|
|
return;
|
|
|
|
/* Stop previous accounting session, if one is started, and allocate
|
|
* new session id for the new session. */
|
|
accounting_sta_stop(hapd, sta);
|
|
|
|
hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
|
|
HOSTAPD_LEVEL_INFO,
|
|
"associated (aid %d)",
|
|
sta->aid);
|
|
|
|
if (sta->flags & WLAN_STA_ASSOC)
|
|
new_assoc = 0;
|
|
sta->flags |= WLAN_STA_ASSOC;
|
|
sta->flags &= ~WLAN_STA_WNM_SLEEP_MODE;
|
|
if ((!hapd->conf->ieee802_1x && !hapd->conf->wpa &&
|
|
!hapd->conf->osen) ||
|
|
sta->auth_alg == WLAN_AUTH_FILS_SK ||
|
|
sta->auth_alg == WLAN_AUTH_FILS_SK_PFS ||
|
|
sta->auth_alg == WLAN_AUTH_FILS_PK ||
|
|
sta->auth_alg == WLAN_AUTH_FT) {
|
|
/*
|
|
* Open, static WEP, FT protocol, or FILS; no separate
|
|
* authorization step.
|
|
*/
|
|
ap_sta_set_authorized(hapd, sta, 1);
|
|
}
|
|
|
|
if (reassoc)
|
|
mlme_reassociate_indication(hapd, sta);
|
|
else
|
|
mlme_associate_indication(hapd, sta);
|
|
|
|
sta->sa_query_timed_out = 0;
|
|
|
|
if (sta->eapol_sm == NULL) {
|
|
/*
|
|
* This STA does not use RADIUS server for EAP authentication,
|
|
* so bind it to the selected VLAN interface now, since the
|
|
* interface selection is not going to change anymore.
|
|
*/
|
|
if (ap_sta_bind_vlan(hapd, sta) < 0)
|
|
return;
|
|
} else if (sta->vlan_id) {
|
|
/* VLAN ID already set (e.g., by PMKSA caching), so bind STA */
|
|
if (ap_sta_bind_vlan(hapd, sta) < 0)
|
|
return;
|
|
}
|
|
|
|
hostapd_set_sta_flags(hapd, sta);
|
|
|
|
if (!(sta->flags & WLAN_STA_WDS) && sta->pending_wds_enable) {
|
|
wpa_printf(MSG_DEBUG, "Enable 4-address WDS mode for STA "
|
|
MACSTR " based on pending request",
|
|
MAC2STR(sta->addr));
|
|
sta->pending_wds_enable = 0;
|
|
sta->flags |= WLAN_STA_WDS;
|
|
}
|
|
|
|
if (sta->flags & (WLAN_STA_WDS | WLAN_STA_MULTI_AP)) {
|
|
int ret;
|
|
char ifname_wds[IFNAMSIZ + 1];
|
|
|
|
wpa_printf(MSG_DEBUG, "Reenable 4-address WDS mode for STA "
|
|
MACSTR " (aid %u)",
|
|
MAC2STR(sta->addr), sta->aid);
|
|
ret = hostapd_set_wds_sta(hapd, ifname_wds, sta->addr,
|
|
sta->aid, 1);
|
|
if (!ret)
|
|
hostapd_set_wds_encryption(hapd, sta, ifname_wds);
|
|
}
|
|
|
|
if (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);
|
|
hapd->new_assoc_sta_cb(hapd, sta, !new_assoc);
|
|
ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
|
|
|
|
#ifdef CONFIG_FILS
|
|
if ((sta->auth_alg == WLAN_AUTH_FILS_SK ||
|
|
sta->auth_alg == WLAN_AUTH_FILS_SK_PFS ||
|
|
sta->auth_alg == WLAN_AUTH_FILS_PK) &&
|
|
fils_set_tk(sta->wpa_sm) < 0) {
|
|
wpa_printf(MSG_DEBUG, "FILS: TK configuration failed");
|
|
ap_sta_disconnect(hapd, sta, sta->addr,
|
|
WLAN_REASON_UNSPECIFIED);
|
|
return;
|
|
}
|
|
#endif /* CONFIG_FILS */
|
|
|
|
if (sta->pending_eapol_rx) {
|
|
struct os_reltime now, age;
|
|
|
|
os_get_reltime(&now);
|
|
os_reltime_sub(&now, &sta->pending_eapol_rx->rx_time, &age);
|
|
if (age.sec == 0 && age.usec < 200000) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"Process pending EAPOL frame that was received from " MACSTR " just before association notification",
|
|
MAC2STR(sta->addr));
|
|
ieee802_1x_receive(
|
|
hapd, mgmt->da,
|
|
wpabuf_head(sta->pending_eapol_rx->buf),
|
|
wpabuf_len(sta->pending_eapol_rx->buf));
|
|
}
|
|
wpabuf_free(sta->pending_eapol_rx->buf);
|
|
os_free(sta->pending_eapol_rx);
|
|
sta->pending_eapol_rx = NULL;
|
|
}
|
|
}
|
|
|
|
|
|
static void handle_deauth_cb(struct hostapd_data *hapd,
|
|
const struct ieee80211_mgmt *mgmt,
|
|
size_t len, int ok)
|
|
{
|
|
struct sta_info *sta;
|
|
if (is_multicast_ether_addr(mgmt->da))
|
|
return;
|
|
sta = ap_get_sta(hapd, mgmt->da);
|
|
if (!sta) {
|
|
wpa_printf(MSG_DEBUG, "handle_deauth_cb: STA " MACSTR
|
|
" not found", MAC2STR(mgmt->da));
|
|
return;
|
|
}
|
|
if (ok)
|
|
wpa_printf(MSG_DEBUG, "STA " MACSTR " acknowledged deauth",
|
|
MAC2STR(sta->addr));
|
|
else
|
|
wpa_printf(MSG_DEBUG, "STA " MACSTR " did not acknowledge "
|
|
"deauth", MAC2STR(sta->addr));
|
|
|
|
ap_sta_deauth_cb(hapd, sta);
|
|
}
|
|
|
|
|
|
static void handle_disassoc_cb(struct hostapd_data *hapd,
|
|
const struct ieee80211_mgmt *mgmt,
|
|
size_t len, int ok)
|
|
{
|
|
struct sta_info *sta;
|
|
if (is_multicast_ether_addr(mgmt->da))
|
|
return;
|
|
sta = ap_get_sta(hapd, mgmt->da);
|
|
if (!sta) {
|
|
wpa_printf(MSG_DEBUG, "handle_disassoc_cb: STA " MACSTR
|
|
" not found", MAC2STR(mgmt->da));
|
|
return;
|
|
}
|
|
if (ok)
|
|
wpa_printf(MSG_DEBUG, "STA " MACSTR " acknowledged disassoc",
|
|
MAC2STR(sta->addr));
|
|
else
|
|
wpa_printf(MSG_DEBUG, "STA " MACSTR " did not acknowledge "
|
|
"disassoc", MAC2STR(sta->addr));
|
|
|
|
ap_sta_disassoc_cb(hapd, sta);
|
|
}
|
|
|
|
|
|
static void handle_action_cb(struct hostapd_data *hapd,
|
|
const struct ieee80211_mgmt *mgmt,
|
|
size_t len, int ok)
|
|
{
|
|
struct sta_info *sta;
|
|
const struct rrm_measurement_report_element *report;
|
|
|
|
if (is_multicast_ether_addr(mgmt->da))
|
|
return;
|
|
#ifdef CONFIG_DPP
|
|
if (len >= IEEE80211_HDRLEN + 6 &&
|
|
mgmt->u.action.category == WLAN_ACTION_PUBLIC &&
|
|
mgmt->u.action.u.vs_public_action.action ==
|
|
WLAN_PA_VENDOR_SPECIFIC &&
|
|
WPA_GET_BE24(mgmt->u.action.u.vs_public_action.oui) ==
|
|
OUI_WFA &&
|
|
mgmt->u.action.u.vs_public_action.variable[0] ==
|
|
DPP_OUI_TYPE) {
|
|
const u8 *pos, *end;
|
|
|
|
pos = &mgmt->u.action.u.vs_public_action.variable[1];
|
|
end = ((const u8 *) mgmt) + len;
|
|
hostapd_dpp_tx_status(hapd, mgmt->da, pos, end - pos, ok);
|
|
return;
|
|
}
|
|
if (len >= IEEE80211_HDRLEN + 2 &&
|
|
mgmt->u.action.category == WLAN_ACTION_PUBLIC &&
|
|
(mgmt->u.action.u.public_action.action ==
|
|
WLAN_PA_GAS_INITIAL_REQ ||
|
|
mgmt->u.action.u.public_action.action ==
|
|
WLAN_PA_GAS_COMEBACK_REQ)) {
|
|
const u8 *pos, *end;
|
|
|
|
pos = mgmt->u.action.u.public_action.variable;
|
|
end = ((const u8 *) mgmt) + len;
|
|
gas_query_ap_tx_status(hapd->gas, mgmt->da, pos, end - pos, ok);
|
|
return;
|
|
}
|
|
#endif /* CONFIG_DPP */
|
|
sta = ap_get_sta(hapd, mgmt->da);
|
|
if (!sta) {
|
|
wpa_printf(MSG_DEBUG, "handle_action_cb: STA " MACSTR
|
|
" not found", MAC2STR(mgmt->da));
|
|
return;
|
|
}
|
|
|
|
if (len < 24 + 5 + sizeof(*report))
|
|
return;
|
|
report = (const struct rrm_measurement_report_element *)
|
|
&mgmt->u.action.u.rrm.variable[2];
|
|
if (mgmt->u.action.category == WLAN_ACTION_RADIO_MEASUREMENT &&
|
|
mgmt->u.action.u.rrm.action == WLAN_RRM_RADIO_MEASUREMENT_REQUEST &&
|
|
report->eid == WLAN_EID_MEASURE_REQUEST &&
|
|
report->len >= 3 &&
|
|
report->type == MEASURE_TYPE_BEACON)
|
|
hostapd_rrm_beacon_req_tx_status(hapd, mgmt, len, ok);
|
|
}
|
|
|
|
|
|
/**
|
|
* ieee802_11_mgmt_cb - Process management frame TX status callback
|
|
* @hapd: hostapd BSS data structure (the BSS from which the management frame
|
|
* was sent from)
|
|
* @buf: management frame data (starting from IEEE 802.11 header)
|
|
* @len: length of frame data in octets
|
|
* @stype: management frame subtype from frame control field
|
|
* @ok: Whether the frame was ACK'ed
|
|
*/
|
|
void ieee802_11_mgmt_cb(struct hostapd_data *hapd, const u8 *buf, size_t len,
|
|
u16 stype, int ok)
|
|
{
|
|
const struct ieee80211_mgmt *mgmt;
|
|
mgmt = (const struct ieee80211_mgmt *) buf;
|
|
|
|
#ifdef CONFIG_TESTING_OPTIONS
|
|
if (hapd->ext_mgmt_frame_handling) {
|
|
size_t hex_len = 2 * len + 1;
|
|
char *hex = os_malloc(hex_len);
|
|
|
|
if (hex) {
|
|
wpa_snprintf_hex(hex, hex_len, buf, len);
|
|
wpa_msg(hapd->msg_ctx, MSG_INFO,
|
|
"MGMT-TX-STATUS stype=%u ok=%d buf=%s",
|
|
stype, ok, hex);
|
|
os_free(hex);
|
|
}
|
|
return;
|
|
}
|
|
#endif /* CONFIG_TESTING_OPTIONS */
|
|
|
|
switch (stype) {
|
|
case WLAN_FC_STYPE_AUTH:
|
|
wpa_printf(MSG_DEBUG, "mgmt::auth cb");
|
|
handle_auth_cb(hapd, mgmt, len, ok);
|
|
break;
|
|
case WLAN_FC_STYPE_ASSOC_RESP:
|
|
wpa_printf(MSG_DEBUG, "mgmt::assoc_resp cb");
|
|
handle_assoc_cb(hapd, mgmt, len, 0, ok);
|
|
break;
|
|
case WLAN_FC_STYPE_REASSOC_RESP:
|
|
wpa_printf(MSG_DEBUG, "mgmt::reassoc_resp cb");
|
|
handle_assoc_cb(hapd, mgmt, len, 1, ok);
|
|
break;
|
|
case WLAN_FC_STYPE_PROBE_RESP:
|
|
wpa_printf(MSG_EXCESSIVE, "mgmt::proberesp cb ok=%d", ok);
|
|
break;
|
|
case WLAN_FC_STYPE_DEAUTH:
|
|
wpa_printf(MSG_DEBUG, "mgmt::deauth cb");
|
|
handle_deauth_cb(hapd, mgmt, len, ok);
|
|
break;
|
|
case WLAN_FC_STYPE_DISASSOC:
|
|
wpa_printf(MSG_DEBUG, "mgmt::disassoc cb");
|
|
handle_disassoc_cb(hapd, mgmt, len, ok);
|
|
break;
|
|
case WLAN_FC_STYPE_ACTION:
|
|
wpa_printf(MSG_DEBUG, "mgmt::action cb ok=%d", ok);
|
|
handle_action_cb(hapd, mgmt, len, ok);
|
|
break;
|
|
default:
|
|
wpa_printf(MSG_INFO, "unknown mgmt cb frame subtype %d", stype);
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
int ieee802_11_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
|
|
{
|
|
/* TODO */
|
|
return 0;
|
|
}
|
|
|
|
|
|
int ieee802_11_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
|
|
char *buf, size_t buflen)
|
|
{
|
|
/* TODO */
|
|
return 0;
|
|
}
|
|
|
|
|
|
void hostapd_tx_status(struct hostapd_data *hapd, const u8 *addr,
|
|
const u8 *buf, size_t len, int ack)
|
|
{
|
|
struct sta_info *sta;
|
|
struct hostapd_iface *iface = hapd->iface;
|
|
|
|
sta = ap_get_sta(hapd, addr);
|
|
if (sta == NULL && iface->num_bss > 1) {
|
|
size_t j;
|
|
for (j = 0; j < iface->num_bss; j++) {
|
|
hapd = iface->bss[j];
|
|
sta = ap_get_sta(hapd, addr);
|
|
if (sta)
|
|
break;
|
|
}
|
|
}
|
|
if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC))
|
|
return;
|
|
if (sta->flags & WLAN_STA_PENDING_POLL) {
|
|
wpa_printf(MSG_DEBUG, "STA " MACSTR " %s pending "
|
|
"activity poll", MAC2STR(sta->addr),
|
|
ack ? "ACKed" : "did not ACK");
|
|
if (ack)
|
|
sta->flags &= ~WLAN_STA_PENDING_POLL;
|
|
}
|
|
|
|
ieee802_1x_tx_status(hapd, sta, buf, len, ack);
|
|
}
|
|
|
|
|
|
void hostapd_eapol_tx_status(struct hostapd_data *hapd, const u8 *dst,
|
|
const u8 *data, size_t len, int ack)
|
|
{
|
|
struct sta_info *sta;
|
|
struct hostapd_iface *iface = hapd->iface;
|
|
|
|
sta = ap_get_sta(hapd, dst);
|
|
if (sta == NULL && iface->num_bss > 1) {
|
|
size_t j;
|
|
for (j = 0; j < iface->num_bss; j++) {
|
|
hapd = iface->bss[j];
|
|
sta = ap_get_sta(hapd, dst);
|
|
if (sta)
|
|
break;
|
|
}
|
|
}
|
|
if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) {
|
|
wpa_printf(MSG_DEBUG, "Ignore TX status for Data frame to STA "
|
|
MACSTR " that is not currently associated",
|
|
MAC2STR(dst));
|
|
return;
|
|
}
|
|
|
|
ieee802_1x_eapol_tx_status(hapd, sta, data, len, ack);
|
|
}
|
|
|
|
|
|
void hostapd_client_poll_ok(struct hostapd_data *hapd, const u8 *addr)
|
|
{
|
|
struct sta_info *sta;
|
|
struct hostapd_iface *iface = hapd->iface;
|
|
|
|
sta = ap_get_sta(hapd, addr);
|
|
if (sta == NULL && iface->num_bss > 1) {
|
|
size_t j;
|
|
for (j = 0; j < iface->num_bss; j++) {
|
|
hapd = iface->bss[j];
|
|
sta = ap_get_sta(hapd, addr);
|
|
if (sta)
|
|
break;
|
|
}
|
|
}
|
|
if (sta == NULL)
|
|
return;
|
|
wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_POLL_OK MACSTR,
|
|
MAC2STR(sta->addr));
|
|
if (!(sta->flags & WLAN_STA_PENDING_POLL))
|
|
return;
|
|
|
|
wpa_printf(MSG_DEBUG, "STA " MACSTR " ACKed pending "
|
|
"activity poll", MAC2STR(sta->addr));
|
|
sta->flags &= ~WLAN_STA_PENDING_POLL;
|
|
}
|
|
|
|
|
|
void ieee802_11_rx_from_unknown(struct hostapd_data *hapd, const u8 *src,
|
|
int wds)
|
|
{
|
|
struct sta_info *sta;
|
|
|
|
sta = ap_get_sta(hapd, src);
|
|
if (sta &&
|
|
((sta->flags & WLAN_STA_ASSOC) ||
|
|
((sta->flags & WLAN_STA_ASSOC_REQ_OK) && wds))) {
|
|
if (!hapd->conf->wds_sta)
|
|
return;
|
|
|
|
if ((sta->flags & (WLAN_STA_ASSOC | WLAN_STA_ASSOC_REQ_OK)) ==
|
|
WLAN_STA_ASSOC_REQ_OK) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"Postpone 4-address WDS mode enabling for STA "
|
|
MACSTR " since TX status for AssocResp is not yet known",
|
|
MAC2STR(sta->addr));
|
|
sta->pending_wds_enable = 1;
|
|
return;
|
|
}
|
|
|
|
if (wds && !(sta->flags & WLAN_STA_WDS)) {
|
|
int ret;
|
|
char ifname_wds[IFNAMSIZ + 1];
|
|
|
|
wpa_printf(MSG_DEBUG, "Enable 4-address WDS mode for "
|
|
"STA " MACSTR " (aid %u)",
|
|
MAC2STR(sta->addr), sta->aid);
|
|
sta->flags |= WLAN_STA_WDS;
|
|
ret = hostapd_set_wds_sta(hapd, ifname_wds,
|
|
sta->addr, sta->aid, 1);
|
|
if (!ret)
|
|
hostapd_set_wds_encryption(hapd, sta,
|
|
ifname_wds);
|
|
}
|
|
return;
|
|
}
|
|
|
|
wpa_printf(MSG_DEBUG, "Data/PS-poll frame from not associated STA "
|
|
MACSTR, MAC2STR(src));
|
|
if (is_multicast_ether_addr(src) || is_zero_ether_addr(src) ||
|
|
os_memcmp(src, hapd->own_addr, ETH_ALEN) == 0) {
|
|
/* Broadcast bit set in SA or unexpected SA?! Ignore the frame
|
|
* silently. */
|
|
return;
|
|
}
|
|
|
|
if (sta && (sta->flags & WLAN_STA_ASSOC_REQ_OK)) {
|
|
wpa_printf(MSG_DEBUG, "Association Response to the STA has "
|
|
"already been sent, but no TX status yet known - "
|
|
"ignore Class 3 frame issue with " MACSTR,
|
|
MAC2STR(src));
|
|
return;
|
|
}
|
|
|
|
if (sta && (sta->flags & WLAN_STA_AUTH))
|
|
hostapd_drv_sta_disassoc(
|
|
hapd, src,
|
|
WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
|
|
else
|
|
hostapd_drv_sta_deauth(
|
|
hapd, src,
|
|
WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
|
|
}
|
|
|
|
|
|
u8 * hostapd_eid_txpower_envelope(struct hostapd_data *hapd, u8 *eid)
|
|
{
|
|
struct hostapd_iface *iface = hapd->iface;
|
|
struct hostapd_config *iconf = iface->conf;
|
|
struct hostapd_hw_modes *mode = iface->current_mode;
|
|
struct hostapd_channel_data *chan;
|
|
int dfs, i;
|
|
u8 channel, tx_pwr_count, local_pwr_constraint;
|
|
int max_tx_power;
|
|
u8 tx_pwr;
|
|
|
|
if (!mode)
|
|
return eid;
|
|
|
|
if (ieee80211_freq_to_chan(iface->freq, &channel) == NUM_HOSTAPD_MODES)
|
|
return eid;
|
|
|
|
for (i = 0; i < mode->num_channels; i++) {
|
|
if (mode->channels[i].freq == iface->freq)
|
|
break;
|
|
}
|
|
if (i == mode->num_channels)
|
|
return eid;
|
|
|
|
switch (hostapd_get_oper_chwidth(iconf)) {
|
|
case CHANWIDTH_USE_HT:
|
|
if (iconf->secondary_channel == 0) {
|
|
/* Max Transmit Power count = 0 (20 MHz) */
|
|
tx_pwr_count = 0;
|
|
} else {
|
|
/* Max Transmit Power count = 1 (20, 40 MHz) */
|
|
tx_pwr_count = 1;
|
|
}
|
|
break;
|
|
case CHANWIDTH_80MHZ:
|
|
/* Max Transmit Power count = 2 (20, 40, and 80 MHz) */
|
|
tx_pwr_count = 2;
|
|
break;
|
|
case CHANWIDTH_80P80MHZ:
|
|
case CHANWIDTH_160MHZ:
|
|
/* Max Transmit Power count = 3 (20, 40, 80, 160/80+80 MHz) */
|
|
tx_pwr_count = 3;
|
|
break;
|
|
default:
|
|
return eid;
|
|
}
|
|
|
|
/*
|
|
* Below local_pwr_constraint logic is referred from
|
|
* hostapd_eid_pwr_constraint.
|
|
*
|
|
* Check if DFS is required by regulatory.
|
|
*/
|
|
dfs = hostapd_is_dfs_required(hapd->iface);
|
|
if (dfs < 0)
|
|
dfs = 0;
|
|
|
|
/*
|
|
* In order to meet regulations when TPC is not implemented using
|
|
* a transmit power that is below the legal maximum (including any
|
|
* mitigation factor) should help. In this case, indicate 3 dB below
|
|
* maximum allowed transmit power.
|
|
*/
|
|
if (hapd->iconf->local_pwr_constraint == -1)
|
|
local_pwr_constraint = (dfs == 0) ? 0 : 3;
|
|
else
|
|
local_pwr_constraint = hapd->iconf->local_pwr_constraint;
|
|
|
|
/*
|
|
* A STA that is not an AP shall use a transmit power less than or
|
|
* equal to the local maximum transmit power level for the channel.
|
|
* The local maximum transmit power can be calculated from the formula:
|
|
* local max TX pwr = max TX pwr - local pwr constraint
|
|
* Where max TX pwr is maximum transmit power level specified for
|
|
* channel in Country element and local pwr constraint is specified
|
|
* for channel in this Power Constraint element.
|
|
*/
|
|
chan = &mode->channels[i];
|
|
max_tx_power = chan->max_tx_power - local_pwr_constraint;
|
|
|
|
/*
|
|
* Local Maximum Transmit power is encoded as two's complement
|
|
* with a 0.5 dB step.
|
|
*/
|
|
max_tx_power *= 2; /* in 0.5 dB steps */
|
|
if (max_tx_power > 127) {
|
|
/* 63.5 has special meaning of 63.5 dBm or higher */
|
|
max_tx_power = 127;
|
|
}
|
|
if (max_tx_power < -128)
|
|
max_tx_power = -128;
|
|
if (max_tx_power < 0)
|
|
tx_pwr = 0x80 + max_tx_power + 128;
|
|
else
|
|
tx_pwr = max_tx_power;
|
|
|
|
*eid++ = WLAN_EID_TRANSMIT_POWER_ENVELOPE;
|
|
*eid++ = 2 + tx_pwr_count;
|
|
|
|
/*
|
|
* Max Transmit Power count and
|
|
* Max Transmit Power units = 0 (EIRP)
|
|
*/
|
|
*eid++ = tx_pwr_count;
|
|
|
|
for (i = 0; i <= tx_pwr_count; i++)
|
|
*eid++ = tx_pwr;
|
|
|
|
return eid;
|
|
}
|
|
|
|
|
|
u8 * hostapd_eid_wb_chsw_wrapper(struct hostapd_data *hapd, u8 *eid)
|
|
{
|
|
u8 bw, chan1, chan2 = 0;
|
|
int freq1;
|
|
|
|
if (!hapd->cs_freq_params.channel ||
|
|
(!hapd->cs_freq_params.vht_enabled &&
|
|
!hapd->cs_freq_params.he_enabled))
|
|
return eid;
|
|
|
|
/* bandwidth: 0: 40, 1: 80, 2: 160, 3: 80+80 */
|
|
switch (hapd->cs_freq_params.bandwidth) {
|
|
case 40:
|
|
bw = 0;
|
|
break;
|
|
case 80:
|
|
/* check if it's 80+80 */
|
|
if (!hapd->cs_freq_params.center_freq2)
|
|
bw = 1;
|
|
else
|
|
bw = 3;
|
|
break;
|
|
case 160:
|
|
bw = 2;
|
|
break;
|
|
default:
|
|
/* not valid VHT bandwidth or not in CSA */
|
|
return eid;
|
|
}
|
|
|
|
freq1 = hapd->cs_freq_params.center_freq1 ?
|
|
hapd->cs_freq_params.center_freq1 :
|
|
hapd->cs_freq_params.freq;
|
|
if (ieee80211_freq_to_chan(freq1, &chan1) !=
|
|
HOSTAPD_MODE_IEEE80211A)
|
|
return eid;
|
|
|
|
if (hapd->cs_freq_params.center_freq2 &&
|
|
ieee80211_freq_to_chan(hapd->cs_freq_params.center_freq2,
|
|
&chan2) != HOSTAPD_MODE_IEEE80211A)
|
|
return eid;
|
|
|
|
*eid++ = WLAN_EID_VHT_CHANNEL_SWITCH_WRAPPER;
|
|
*eid++ = 5; /* Length of Channel Switch Wrapper */
|
|
*eid++ = WLAN_EID_VHT_WIDE_BW_CHSWITCH;
|
|
*eid++ = 3; /* Length of Wide Bandwidth Channel Switch element */
|
|
*eid++ = bw; /* New Channel Width */
|
|
*eid++ = chan1; /* New Channel Center Frequency Segment 0 */
|
|
*eid++ = chan2; /* New Channel Center Frequency Segment 1 */
|
|
|
|
return eid;
|
|
}
|
|
|
|
#endif /* CONFIG_NATIVE_WINDOWS */
|