963 lines
26 KiB
C
963 lines
26 KiB
C
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/*
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* WPA Supplicant - Driver event processing
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* Copyright (c) 2003-2008, Jouni Malinen <j@w1.fi>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Alternatively, this software may be distributed under the terms of BSD
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* license.
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*
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* See README and COPYING for more details.
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*/
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#include "includes.h"
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#include "common.h"
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#include "eapol_supp/eapol_supp_sm.h"
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#include "wpa.h"
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#include "eloop.h"
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#include "drivers/driver.h"
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#include "config.h"
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#include "l2_packet/l2_packet.h"
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#include "wpa_supplicant_i.h"
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#include "pcsc_funcs.h"
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#include "preauth.h"
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#include "pmksa_cache.h"
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#include "wpa_ctrl.h"
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#include "eap_peer/eap.h"
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#include "ctrl_iface_dbus.h"
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#include "ieee802_11_defs.h"
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#include "blacklist.h"
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#include "wpas_glue.h"
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static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
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{
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struct wpa_ssid *ssid;
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if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid)
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return 0;
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wpa_printf(MSG_DEBUG, "Select network based on association "
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"information");
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ssid = wpa_supplicant_get_ssid(wpa_s);
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if (ssid == NULL) {
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wpa_printf(MSG_INFO, "No network configuration found for the "
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"current AP");
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return -1;
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}
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if (ssid->disabled) {
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wpa_printf(MSG_DEBUG, "Selected network is disabled");
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return -1;
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}
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wpa_printf(MSG_DEBUG, "Network configuration found for the current "
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"AP");
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if (ssid->key_mgmt & (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X |
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WPA_KEY_MGMT_WPA_NONE |
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WPA_KEY_MGMT_FT_PSK | WPA_KEY_MGMT_FT_IEEE8021X))
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{
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u8 wpa_ie[80];
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size_t wpa_ie_len = sizeof(wpa_ie);
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wpa_supplicant_set_suites(wpa_s, NULL, ssid,
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wpa_ie, &wpa_ie_len);
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} else {
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wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
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}
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if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
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eapol_sm_invalidate_cached_session(wpa_s->eapol);
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wpa_s->current_ssid = ssid;
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wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
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wpa_supplicant_initiate_eapol(wpa_s);
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return 0;
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}
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static void wpa_supplicant_stop_countermeasures(void *eloop_ctx,
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void *sock_ctx)
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{
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struct wpa_supplicant *wpa_s = eloop_ctx;
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if (wpa_s->countermeasures) {
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wpa_s->countermeasures = 0;
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wpa_drv_set_countermeasures(wpa_s, 0);
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wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
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wpa_supplicant_req_scan(wpa_s, 0, 0);
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}
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}
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void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
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{
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wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
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os_memset(wpa_s->bssid, 0, ETH_ALEN);
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os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
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eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
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eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
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if (wpa_s->key_mgmt == WPA_KEY_MGMT_PSK ||
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wpa_s->key_mgmt == WPA_KEY_MGMT_FT_PSK)
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eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
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wpa_s->ap_ies_from_associnfo = 0;
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}
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static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
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{
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struct wpa_ie_data ie;
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int pmksa_set = -1;
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size_t i;
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if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
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ie.pmkid == NULL)
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return;
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for (i = 0; i < ie.num_pmkid; i++) {
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pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
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ie.pmkid + i * PMKID_LEN,
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NULL, NULL, 0);
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if (pmksa_set == 0) {
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eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
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break;
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}
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}
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wpa_printf(MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from PMKSA "
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"cache", pmksa_set == 0 ? "" : "not ");
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}
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static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
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union wpa_event_data *data)
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{
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if (data == NULL) {
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wpa_printf(MSG_DEBUG, "RSN: No data in PMKID candidate event");
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return;
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}
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wpa_printf(MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
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" index=%d preauth=%d",
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MAC2STR(data->pmkid_candidate.bssid),
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data->pmkid_candidate.index,
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data->pmkid_candidate.preauth);
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pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
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data->pmkid_candidate.index,
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data->pmkid_candidate.preauth);
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}
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static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
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{
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if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
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wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
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return 0;
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#ifdef IEEE8021X_EAPOL
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if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
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wpa_s->current_ssid &&
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!(wpa_s->current_ssid->eapol_flags &
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(EAPOL_FLAG_REQUIRE_KEY_UNICAST |
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EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
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/* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
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* plaintext or static WEP keys). */
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return 0;
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}
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#endif /* IEEE8021X_EAPOL */
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return 1;
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}
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/**
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* wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
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* @wpa_s: pointer to wpa_supplicant data
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* @ssid: Configuration data for the network
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* Returns: 0 on success, -1 on failure
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*
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* This function is called when starting authentication with a network that is
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* configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
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*/
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int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
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struct wpa_ssid *ssid)
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{
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#ifdef IEEE8021X_EAPOL
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int aka = 0, sim = 0, type;
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if (ssid->eap.pcsc == NULL || wpa_s->scard != NULL)
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return 0;
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if (ssid->eap.eap_methods == NULL) {
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sim = 1;
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aka = 1;
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} else {
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struct eap_method_type *eap = ssid->eap.eap_methods;
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while (eap->vendor != EAP_VENDOR_IETF ||
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eap->method != EAP_TYPE_NONE) {
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if (eap->vendor == EAP_VENDOR_IETF) {
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if (eap->method == EAP_TYPE_SIM)
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sim = 1;
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else if (eap->method == EAP_TYPE_AKA)
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aka = 1;
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}
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eap++;
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}
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}
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if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
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sim = 0;
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if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL)
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aka = 0;
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if (!sim && !aka) {
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wpa_printf(MSG_DEBUG, "Selected network is configured to use "
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"SIM, but neither EAP-SIM nor EAP-AKA are enabled");
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return 0;
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}
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wpa_printf(MSG_DEBUG, "Selected network is configured to use SIM "
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"(sim=%d aka=%d) - initialize PCSC", sim, aka);
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if (sim && aka)
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type = SCARD_TRY_BOTH;
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else if (aka)
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type = SCARD_USIM_ONLY;
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else
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type = SCARD_GSM_SIM_ONLY;
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wpa_s->scard = scard_init(type);
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if (wpa_s->scard == NULL) {
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wpa_printf(MSG_WARNING, "Failed to initialize SIM "
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"(pcsc-lite)");
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return -1;
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}
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wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
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eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
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#endif /* IEEE8021X_EAPOL */
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return 0;
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}
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#ifndef CONFIG_NO_SCAN_PROCESSING
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static int wpa_supplicant_match_privacy(struct wpa_scan_res *bss,
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struct wpa_ssid *ssid)
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{
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int i, privacy = 0;
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if (ssid->mixed_cell)
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return 1;
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for (i = 0; i < NUM_WEP_KEYS; i++) {
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if (ssid->wep_key_len[i]) {
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privacy = 1;
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break;
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}
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}
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#ifdef IEEE8021X_EAPOL
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if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
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ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
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EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
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privacy = 1;
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#endif /* IEEE8021X_EAPOL */
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if (bss->caps & IEEE80211_CAP_PRIVACY)
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return privacy;
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return !privacy;
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}
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static int wpa_supplicant_ssid_bss_match(struct wpa_ssid *ssid,
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struct wpa_scan_res *bss)
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{
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struct wpa_ie_data ie;
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int proto_match = 0;
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const u8 *rsn_ie, *wpa_ie;
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rsn_ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
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while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
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proto_match++;
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if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
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wpa_printf(MSG_DEBUG, " skip RSN IE - parse failed");
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break;
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}
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if (!(ie.proto & ssid->proto)) {
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wpa_printf(MSG_DEBUG, " skip RSN IE - proto "
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"mismatch");
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break;
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}
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if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
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wpa_printf(MSG_DEBUG, " skip RSN IE - PTK cipher "
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"mismatch");
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break;
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}
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if (!(ie.group_cipher & ssid->group_cipher)) {
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wpa_printf(MSG_DEBUG, " skip RSN IE - GTK cipher "
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"mismatch");
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break;
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}
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if (!(ie.key_mgmt & ssid->key_mgmt)) {
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wpa_printf(MSG_DEBUG, " skip RSN IE - key mgmt "
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"mismatch");
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break;
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}
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#ifdef CONFIG_IEEE80211W
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if (!(ie.capabilities & WPA_CAPABILITY_MGMT_FRAME_PROTECTION)
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&& ssid->ieee80211w == IEEE80211W_REQUIRED) {
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wpa_printf(MSG_DEBUG, " skip RSN IE - no mgmt frame "
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"protection");
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break;
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}
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#endif /* CONFIG_IEEE80211W */
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wpa_printf(MSG_DEBUG, " selected based on RSN IE");
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return 1;
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}
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wpa_ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
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while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
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proto_match++;
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if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
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wpa_printf(MSG_DEBUG, " skip WPA IE - parse failed");
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break;
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}
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if (!(ie.proto & ssid->proto)) {
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wpa_printf(MSG_DEBUG, " skip WPA IE - proto "
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"mismatch");
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break;
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}
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if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
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wpa_printf(MSG_DEBUG, " skip WPA IE - PTK cipher "
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"mismatch");
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break;
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}
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if (!(ie.group_cipher & ssid->group_cipher)) {
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wpa_printf(MSG_DEBUG, " skip WPA IE - GTK cipher "
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"mismatch");
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break;
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}
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if (!(ie.key_mgmt & ssid->key_mgmt)) {
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wpa_printf(MSG_DEBUG, " skip WPA IE - key mgmt "
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"mismatch");
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break;
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}
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wpa_printf(MSG_DEBUG, " selected based on WPA IE");
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return 1;
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}
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if (proto_match == 0)
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wpa_printf(MSG_DEBUG, " skip - no WPA/RSN proto match");
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return 0;
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}
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static struct wpa_scan_res *
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wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s, struct wpa_ssid *group,
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struct wpa_ssid **selected_ssid)
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{
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struct wpa_ssid *ssid;
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struct wpa_scan_res *bss, *selected = NULL;
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size_t i;
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struct wpa_blacklist *e;
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const u8 *ie;
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wpa_printf(MSG_DEBUG, "Selecting BSS from priority group %d",
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group->priority);
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bss = NULL;
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ssid = NULL;
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/* First, try to find WPA-enabled AP */
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wpa_printf(MSG_DEBUG, "Try to find WPA-enabled AP");
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for (i = 0; i < wpa_s->scan_res->num && !selected; i++) {
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const u8 *ssid_;
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u8 wpa_ie_len, rsn_ie_len, ssid_len;
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bss = wpa_s->scan_res->res[i];
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ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
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ssid_ = ie ? ie + 2 : (u8 *) "";
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ssid_len = ie ? ie[1] : 0;
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ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
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wpa_ie_len = ie ? ie[1] : 0;
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ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
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rsn_ie_len = ie ? ie[1] : 0;
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wpa_printf(MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
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"wpa_ie_len=%u rsn_ie_len=%u caps=0x%x",
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(int) i, MAC2STR(bss->bssid),
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||
|
wpa_ssid_txt(ssid_, ssid_len),
|
||
|
wpa_ie_len, rsn_ie_len, bss->caps);
|
||
|
e = wpa_blacklist_get(wpa_s, bss->bssid);
|
||
|
if (e && e->count > 1) {
|
||
|
wpa_printf(MSG_DEBUG, " skip - blacklisted");
|
||
|
continue;
|
||
|
}
|
||
|
|
||
|
if (wpa_ie_len == 0 && rsn_ie_len == 0) {
|
||
|
wpa_printf(MSG_DEBUG, " skip - no WPA/RSN IE");
|
||
|
continue;
|
||
|
}
|
||
|
|
||
|
for (ssid = group; ssid; ssid = ssid->pnext) {
|
||
|
if (ssid->disabled) {
|
||
|
wpa_printf(MSG_DEBUG, " skip - disabled");
|
||
|
continue;
|
||
|
}
|
||
|
if (ssid_len != ssid->ssid_len ||
|
||
|
os_memcmp(ssid_, ssid->ssid, ssid_len) != 0) {
|
||
|
wpa_printf(MSG_DEBUG, " skip - "
|
||
|
"SSID mismatch");
|
||
|
continue;
|
||
|
}
|
||
|
if (ssid->bssid_set &&
|
||
|
os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0)
|
||
|
{
|
||
|
wpa_printf(MSG_DEBUG, " skip - "
|
||
|
"BSSID mismatch");
|
||
|
continue;
|
||
|
}
|
||
|
if (wpa_supplicant_ssid_bss_match(ssid, bss)) {
|
||
|
selected = bss;
|
||
|
*selected_ssid = ssid;
|
||
|
wpa_printf(MSG_DEBUG, " selected WPA AP "
|
||
|
MACSTR " ssid='%s'",
|
||
|
MAC2STR(bss->bssid),
|
||
|
wpa_ssid_txt(ssid_, ssid_len));
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/* If no WPA-enabled AP found, try to find non-WPA AP, if configuration
|
||
|
* allows this. */
|
||
|
wpa_printf(MSG_DEBUG, "Try to find non-WPA AP");
|
||
|
for (i = 0; i < wpa_s->scan_res->num && !selected; i++) {
|
||
|
const u8 *ssid_;
|
||
|
u8 wpa_ie_len, rsn_ie_len, ssid_len;
|
||
|
bss = wpa_s->scan_res->res[i];
|
||
|
|
||
|
ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
|
||
|
ssid_ = ie ? ie + 2 : (u8 *) "";
|
||
|
ssid_len = ie ? ie[1] : 0;
|
||
|
|
||
|
ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
|
||
|
wpa_ie_len = ie ? ie[1] : 0;
|
||
|
|
||
|
ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
|
||
|
rsn_ie_len = ie ? ie[1] : 0;
|
||
|
|
||
|
wpa_printf(MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
|
||
|
"wpa_ie_len=%u rsn_ie_len=%u caps=0x%x",
|
||
|
(int) i, MAC2STR(bss->bssid),
|
||
|
wpa_ssid_txt(ssid_, ssid_len),
|
||
|
wpa_ie_len, rsn_ie_len, bss->caps);
|
||
|
e = wpa_blacklist_get(wpa_s, bss->bssid);
|
||
|
if (e && e->count > 1) {
|
||
|
wpa_printf(MSG_DEBUG, " skip - blacklisted");
|
||
|
continue;
|
||
|
}
|
||
|
for (ssid = group; ssid; ssid = ssid->pnext) {
|
||
|
if (ssid->disabled) {
|
||
|
wpa_printf(MSG_DEBUG, " skip - disabled");
|
||
|
continue;
|
||
|
}
|
||
|
if (ssid->ssid_len != 0 &&
|
||
|
(ssid_len != ssid->ssid_len ||
|
||
|
os_memcmp(ssid_, ssid->ssid, ssid_len) != 0)) {
|
||
|
wpa_printf(MSG_DEBUG, " skip - "
|
||
|
"SSID mismatch");
|
||
|
continue;
|
||
|
}
|
||
|
|
||
|
if (ssid->bssid_set &&
|
||
|
os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0)
|
||
|
{
|
||
|
wpa_printf(MSG_DEBUG, " skip - "
|
||
|
"BSSID mismatch");
|
||
|
continue;
|
||
|
}
|
||
|
|
||
|
if (!(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
|
||
|
!(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA))
|
||
|
{
|
||
|
wpa_printf(MSG_DEBUG, " skip - "
|
||
|
"non-WPA network not allowed");
|
||
|
continue;
|
||
|
}
|
||
|
|
||
|
if ((ssid->key_mgmt &
|
||
|
(WPA_KEY_MGMT_IEEE8021X | WPA_KEY_MGMT_PSK)) &&
|
||
|
(wpa_ie_len != 0 || rsn_ie_len != 0)) {
|
||
|
wpa_printf(MSG_DEBUG, " skip - "
|
||
|
"WPA network");
|
||
|
continue;
|
||
|
}
|
||
|
|
||
|
if (!wpa_supplicant_match_privacy(bss, ssid)) {
|
||
|
wpa_printf(MSG_DEBUG, " skip - "
|
||
|
"privacy mismatch");
|
||
|
continue;
|
||
|
}
|
||
|
|
||
|
if (bss->caps & IEEE80211_CAP_IBSS) {
|
||
|
wpa_printf(MSG_DEBUG, " skip - "
|
||
|
"IBSS (adhoc) network");
|
||
|
continue;
|
||
|
}
|
||
|
|
||
|
selected = bss;
|
||
|
*selected_ssid = ssid;
|
||
|
wpa_printf(MSG_DEBUG, " selected non-WPA AP "
|
||
|
MACSTR " ssid='%s'",
|
||
|
MAC2STR(bss->bssid),
|
||
|
wpa_ssid_txt(ssid_, ssid_len));
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
return selected;
|
||
|
}
|
||
|
|
||
|
|
||
|
static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s)
|
||
|
{
|
||
|
int prio, timeout;
|
||
|
struct wpa_scan_res *selected = NULL;
|
||
|
struct wpa_ssid *ssid = NULL;
|
||
|
|
||
|
if (wpa_supplicant_get_scan_results(wpa_s) < 0) {
|
||
|
if (wpa_s->conf->ap_scan == 2)
|
||
|
return;
|
||
|
wpa_printf(MSG_DEBUG, "Failed to get scan results - try "
|
||
|
"scanning again");
|
||
|
timeout = 1;
|
||
|
goto req_scan;
|
||
|
}
|
||
|
|
||
|
wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
|
||
|
|
||
|
wpa_supplicant_dbus_notify_scan_results(wpa_s);
|
||
|
|
||
|
if (wpa_s->conf->ap_scan == 2 || wpa_s->disconnected)
|
||
|
return;
|
||
|
|
||
|
while (selected == NULL) {
|
||
|
for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
|
||
|
selected = wpa_supplicant_select_bss(
|
||
|
wpa_s, wpa_s->conf->pssid[prio], &ssid);
|
||
|
if (selected)
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
if (selected == NULL && wpa_s->blacklist) {
|
||
|
wpa_printf(MSG_DEBUG, "No APs found - clear blacklist "
|
||
|
"and try again");
|
||
|
wpa_blacklist_clear(wpa_s);
|
||
|
} else if (selected == NULL) {
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if (selected) {
|
||
|
/* Do not trigger new association unless the BSSID has changed
|
||
|
* or if reassociation is requested. If we are in process of
|
||
|
* associating with the selected BSSID, do not trigger new
|
||
|
* attempt. */
|
||
|
if (wpa_s->reassociate ||
|
||
|
(os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
|
||
|
(wpa_s->wpa_state != WPA_ASSOCIATING ||
|
||
|
os_memcmp(selected->bssid, wpa_s->pending_bssid,
|
||
|
ETH_ALEN) != 0))) {
|
||
|
if (wpa_supplicant_scard_init(wpa_s, ssid)) {
|
||
|
wpa_supplicant_req_scan(wpa_s, 10, 0);
|
||
|
return;
|
||
|
}
|
||
|
wpa_supplicant_associate(wpa_s, selected, ssid);
|
||
|
} else {
|
||
|
wpa_printf(MSG_DEBUG, "Already associated with the "
|
||
|
"selected AP.");
|
||
|
}
|
||
|
rsn_preauth_scan_results(wpa_s->wpa, wpa_s->scan_res);
|
||
|
} else {
|
||
|
wpa_printf(MSG_DEBUG, "No suitable AP found.");
|
||
|
timeout = 5;
|
||
|
goto req_scan;
|
||
|
}
|
||
|
|
||
|
return;
|
||
|
|
||
|
req_scan:
|
||
|
if (wpa_s->scan_res_tried == 1 && wpa_s->conf->ap_scan == 1) {
|
||
|
/*
|
||
|
* Quick recovery if the initial scan results were not
|
||
|
* complete when fetched before the first scan request.
|
||
|
*/
|
||
|
wpa_s->scan_res_tried++;
|
||
|
timeout = 0;
|
||
|
}
|
||
|
wpa_supplicant_req_scan(wpa_s, timeout, 0);
|
||
|
}
|
||
|
#endif /* CONFIG_NO_SCAN_PROCESSING */
|
||
|
|
||
|
|
||
|
static void wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
|
||
|
union wpa_event_data *data)
|
||
|
{
|
||
|
int l, len, found = 0, wpa_found, rsn_found;
|
||
|
u8 *p;
|
||
|
|
||
|
wpa_printf(MSG_DEBUG, "Association info event");
|
||
|
if (data->assoc_info.req_ies)
|
||
|
wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
|
||
|
data->assoc_info.req_ies_len);
|
||
|
if (data->assoc_info.resp_ies)
|
||
|
wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
|
||
|
data->assoc_info.resp_ies_len);
|
||
|
if (data->assoc_info.beacon_ies)
|
||
|
wpa_hexdump(MSG_DEBUG, "beacon_ies",
|
||
|
data->assoc_info.beacon_ies,
|
||
|
data->assoc_info.beacon_ies_len);
|
||
|
|
||
|
p = data->assoc_info.req_ies;
|
||
|
l = data->assoc_info.req_ies_len;
|
||
|
|
||
|
/* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
|
||
|
while (p && l >= 2) {
|
||
|
len = p[1] + 2;
|
||
|
if (len > l) {
|
||
|
wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
|
||
|
p, l);
|
||
|
break;
|
||
|
}
|
||
|
if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
|
||
|
(os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
|
||
|
(p[0] == WLAN_EID_RSN && p[1] >= 2)) {
|
||
|
if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
|
||
|
break;
|
||
|
found = 1;
|
||
|
wpa_find_assoc_pmkid(wpa_s);
|
||
|
break;
|
||
|
}
|
||
|
l -= len;
|
||
|
p += len;
|
||
|
}
|
||
|
if (!found && data->assoc_info.req_ies)
|
||
|
wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
|
||
|
|
||
|
/* WPA/RSN IE from Beacon/ProbeResp */
|
||
|
p = data->assoc_info.beacon_ies;
|
||
|
l = data->assoc_info.beacon_ies_len;
|
||
|
|
||
|
/* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
|
||
|
*/
|
||
|
wpa_found = rsn_found = 0;
|
||
|
while (p && l >= 2) {
|
||
|
len = p[1] + 2;
|
||
|
if (len > l) {
|
||
|
wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
|
||
|
p, l);
|
||
|
break;
|
||
|
}
|
||
|
if (!wpa_found &&
|
||
|
p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
|
||
|
os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
|
||
|
wpa_found = 1;
|
||
|
wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
|
||
|
}
|
||
|
|
||
|
if (!rsn_found &&
|
||
|
p[0] == WLAN_EID_RSN && p[1] >= 2) {
|
||
|
rsn_found = 1;
|
||
|
wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
|
||
|
}
|
||
|
|
||
|
l -= len;
|
||
|
p += len;
|
||
|
}
|
||
|
|
||
|
if (!wpa_found && data->assoc_info.beacon_ies)
|
||
|
wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
|
||
|
if (!rsn_found && data->assoc_info.beacon_ies)
|
||
|
wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
|
||
|
if (wpa_found || rsn_found)
|
||
|
wpa_s->ap_ies_from_associnfo = 1;
|
||
|
}
|
||
|
|
||
|
|
||
|
static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
|
||
|
union wpa_event_data *data)
|
||
|
{
|
||
|
u8 bssid[ETH_ALEN];
|
||
|
int ft_completed = wpa_ft_is_completed(wpa_s->wpa);
|
||
|
|
||
|
if (data)
|
||
|
wpa_supplicant_event_associnfo(wpa_s, data);
|
||
|
|
||
|
wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
|
||
|
if (wpa_s->use_client_mlme)
|
||
|
os_memcpy(bssid, wpa_s->bssid, ETH_ALEN);
|
||
|
if (wpa_s->use_client_mlme ||
|
||
|
(wpa_drv_get_bssid(wpa_s, bssid) >= 0 &&
|
||
|
os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0)) {
|
||
|
wpa_msg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
|
||
|
MACSTR, MAC2STR(bssid));
|
||
|
os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
|
||
|
os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
|
||
|
if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
|
||
|
wpa_clear_keys(wpa_s, bssid);
|
||
|
}
|
||
|
if (wpa_supplicant_select_config(wpa_s) < 0) {
|
||
|
wpa_supplicant_disassociate(
|
||
|
wpa_s, WLAN_REASON_DEAUTH_LEAVING);
|
||
|
return;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
|
||
|
if (wpa_s->current_ssid) {
|
||
|
/* When using scanning (ap_scan=1), SIM PC/SC interface can be
|
||
|
* initialized before association, but for other modes,
|
||
|
* initialize PC/SC here, if the current configuration needs
|
||
|
* smartcard or SIM/USIM. */
|
||
|
wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
|
||
|
}
|
||
|
wpa_sm_notify_assoc(wpa_s->wpa, bssid);
|
||
|
l2_packet_notify_auth_start(wpa_s->l2);
|
||
|
|
||
|
/*
|
||
|
* Set portEnabled first to FALSE in order to get EAP state machine out
|
||
|
* of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
|
||
|
* state machine may transit to AUTHENTICATING state based on obsolete
|
||
|
* eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
|
||
|
* AUTHENTICATED without ever giving chance to EAP state machine to
|
||
|
* reset the state.
|
||
|
*/
|
||
|
if (!ft_completed) {
|
||
|
eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
|
||
|
eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
|
||
|
}
|
||
|
if (wpa_s->key_mgmt == WPA_KEY_MGMT_PSK ||
|
||
|
wpa_s->key_mgmt == WPA_KEY_MGMT_FT_PSK || ft_completed)
|
||
|
eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
|
||
|
/* 802.1X::portControl = Auto */
|
||
|
eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
|
||
|
wpa_s->eapol_received = 0;
|
||
|
if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
|
||
|
wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
|
||
|
wpa_supplicant_cancel_auth_timeout(wpa_s);
|
||
|
wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
|
||
|
} else if (!ft_completed) {
|
||
|
/* Timeout for receiving the first EAPOL packet */
|
||
|
wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
|
||
|
}
|
||
|
wpa_supplicant_cancel_scan(wpa_s);
|
||
|
|
||
|
if (wpa_s->driver_4way_handshake &&
|
||
|
(wpa_s->key_mgmt == WPA_KEY_MGMT_PSK ||
|
||
|
wpa_s->key_mgmt == WPA_KEY_MGMT_FT_PSK)) {
|
||
|
/*
|
||
|
* We are done; the driver will take care of RSN 4-way
|
||
|
* handshake.
|
||
|
*/
|
||
|
wpa_supplicant_cancel_auth_timeout(wpa_s);
|
||
|
wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
|
||
|
eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
|
||
|
eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
|
||
|
static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s)
|
||
|
{
|
||
|
const u8 *bssid;
|
||
|
|
||
|
if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
|
||
|
/*
|
||
|
* At least Host AP driver and a Prism3 card seemed to be
|
||
|
* generating streams of disconnected events when configuring
|
||
|
* IBSS for WPA-None. Ignore them for now.
|
||
|
*/
|
||
|
wpa_printf(MSG_DEBUG, "Disconnect event - ignore in "
|
||
|
"IBSS/WPA-None mode");
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
if (wpa_s->wpa_state == WPA_4WAY_HANDSHAKE &&
|
||
|
(wpa_s->key_mgmt == WPA_KEY_MGMT_PSK ||
|
||
|
wpa_s->key_mgmt == WPA_KEY_MGMT_FT_PSK)) {
|
||
|
wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
|
||
|
"pre-shared key may be incorrect");
|
||
|
}
|
||
|
if (wpa_s->wpa_state >= WPA_ASSOCIATED)
|
||
|
wpa_supplicant_req_scan(wpa_s, 0, 100000);
|
||
|
bssid = wpa_s->bssid;
|
||
|
if (os_memcmp(bssid, "\x00\x00\x00\x00\x00\x00", ETH_ALEN) == 0)
|
||
|
bssid = wpa_s->pending_bssid;
|
||
|
wpa_blacklist_add(wpa_s, bssid);
|
||
|
wpa_sm_notify_disassoc(wpa_s->wpa);
|
||
|
wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "- Disconnect event - "
|
||
|
"remove keys");
|
||
|
if (wpa_supplicant_dynamic_keys(wpa_s)) {
|
||
|
wpa_s->keys_cleared = 0;
|
||
|
wpa_clear_keys(wpa_s, wpa_s->bssid);
|
||
|
}
|
||
|
wpa_supplicant_mark_disassoc(wpa_s);
|
||
|
}
|
||
|
|
||
|
|
||
|
static void
|
||
|
wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
|
||
|
union wpa_event_data *data)
|
||
|
{
|
||
|
int pairwise;
|
||
|
struct os_time t;
|
||
|
|
||
|
wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
|
||
|
pairwise = (data && data->michael_mic_failure.unicast);
|
||
|
wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
|
||
|
os_get_time(&t);
|
||
|
if (wpa_s->last_michael_mic_error &&
|
||
|
t.sec - wpa_s->last_michael_mic_error <= 60) {
|
||
|
/* initialize countermeasures */
|
||
|
wpa_s->countermeasures = 1;
|
||
|
wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
|
||
|
|
||
|
/*
|
||
|
* Need to wait for completion of request frame. We do not get
|
||
|
* any callback for the message completion, so just wait a
|
||
|
* short while and hope for the best. */
|
||
|
os_sleep(0, 10000);
|
||
|
|
||
|
wpa_drv_set_countermeasures(wpa_s, 1);
|
||
|
wpa_supplicant_deauthenticate(wpa_s,
|
||
|
WLAN_REASON_MICHAEL_MIC_FAILURE);
|
||
|
eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
|
||
|
wpa_s, NULL);
|
||
|
eloop_register_timeout(60, 0,
|
||
|
wpa_supplicant_stop_countermeasures,
|
||
|
wpa_s, NULL);
|
||
|
/* TODO: mark the AP rejected for 60 second. STA is
|
||
|
* allowed to associate with another AP.. */
|
||
|
}
|
||
|
wpa_s->last_michael_mic_error = t.sec;
|
||
|
}
|
||
|
|
||
|
|
||
|
static void
|
||
|
wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
|
||
|
union wpa_event_data *data)
|
||
|
{
|
||
|
if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
|
||
|
return;
|
||
|
|
||
|
switch (data->interface_status.ievent) {
|
||
|
case EVENT_INTERFACE_ADDED:
|
||
|
if (!wpa_s->interface_removed)
|
||
|
break;
|
||
|
wpa_s->interface_removed = 0;
|
||
|
wpa_printf(MSG_DEBUG, "Configured interface was added.");
|
||
|
if (wpa_supplicant_driver_init(wpa_s) < 0) {
|
||
|
wpa_printf(MSG_INFO, "Failed to initialize the driver "
|
||
|
"after interface was added.");
|
||
|
}
|
||
|
break;
|
||
|
case EVENT_INTERFACE_REMOVED:
|
||
|
wpa_printf(MSG_DEBUG, "Configured interface was removed.");
|
||
|
wpa_s->interface_removed = 1;
|
||
|
wpa_supplicant_mark_disassoc(wpa_s);
|
||
|
l2_packet_deinit(wpa_s->l2);
|
||
|
wpa_s->l2 = NULL;
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
|
||
|
#ifdef CONFIG_PEERKEY
|
||
|
static void
|
||
|
wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
|
||
|
union wpa_event_data *data)
|
||
|
{
|
||
|
if (data == NULL)
|
||
|
return;
|
||
|
wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
|
||
|
}
|
||
|
#endif /* CONFIG_PEERKEY */
|
||
|
|
||
|
|
||
|
#ifdef CONFIG_IEEE80211R
|
||
|
static void
|
||
|
wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
|
||
|
union wpa_event_data *data)
|
||
|
{
|
||
|
if (data == NULL)
|
||
|
return;
|
||
|
|
||
|
if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
|
||
|
data->ft_ies.ies_len,
|
||
|
data->ft_ies.ft_action,
|
||
|
data->ft_ies.target_ap) < 0) {
|
||
|
/* TODO: prevent MLME/driver from trying to associate? */
|
||
|
}
|
||
|
}
|
||
|
#endif /* CONFIG_IEEE80211R */
|
||
|
|
||
|
|
||
|
void wpa_supplicant_event(void *ctx, wpa_event_type event,
|
||
|
union wpa_event_data *data)
|
||
|
{
|
||
|
struct wpa_supplicant *wpa_s = ctx;
|
||
|
|
||
|
switch (event) {
|
||
|
case EVENT_ASSOC:
|
||
|
wpa_supplicant_event_assoc(wpa_s, data);
|
||
|
break;
|
||
|
case EVENT_DISASSOC:
|
||
|
wpa_supplicant_event_disassoc(wpa_s);
|
||
|
break;
|
||
|
case EVENT_MICHAEL_MIC_FAILURE:
|
||
|
wpa_supplicant_event_michael_mic_failure(wpa_s, data);
|
||
|
break;
|
||
|
#ifndef CONFIG_NO_SCAN_PROCESSING
|
||
|
case EVENT_SCAN_RESULTS:
|
||
|
wpa_supplicant_event_scan_results(wpa_s);
|
||
|
break;
|
||
|
#endif /* CONFIG_NO_SCAN_PROCESSING */
|
||
|
case EVENT_ASSOCINFO:
|
||
|
wpa_supplicant_event_associnfo(wpa_s, data);
|
||
|
break;
|
||
|
case EVENT_INTERFACE_STATUS:
|
||
|
wpa_supplicant_event_interface_status(wpa_s, data);
|
||
|
break;
|
||
|
case EVENT_PMKID_CANDIDATE:
|
||
|
wpa_supplicant_event_pmkid_candidate(wpa_s, data);
|
||
|
break;
|
||
|
#ifdef CONFIG_PEERKEY
|
||
|
case EVENT_STKSTART:
|
||
|
wpa_supplicant_event_stkstart(wpa_s, data);
|
||
|
break;
|
||
|
#endif /* CONFIG_PEERKEY */
|
||
|
#ifdef CONFIG_IEEE80211R
|
||
|
case EVENT_FT_RESPONSE:
|
||
|
wpa_supplicant_event_ft_response(wpa_s, data);
|
||
|
break;
|
||
|
#endif /* CONFIG_IEEE80211R */
|
||
|
default:
|
||
|
wpa_printf(MSG_INFO, "Unknown event %d", event);
|
||
|
break;
|
||
|
}
|
||
|
}
|