+++ /dev/null
-/*
- * WPA Supplicant - Driver event processing
- * Copyright (c) 2003-2010, Jouni Malinen <j@w1.fi>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Alternatively, this software may be distributed under the terms of BSD
- * license.
- *
- * See README and COPYING for more details.
- */
-
-#include "includes.h"
-
-#include "common.h"
-#include "eapol_supp/eapol_supp_sm.h"
-#include "rsn_supp/wpa.h"
-#include "eloop.h"
-#include "config.h"
-#include "l2_packet/l2_packet.h"
-#include "wpa_supplicant_i.h"
-#include "driver_i.h"
-#include "pcsc_funcs.h"
-#include "rsn_supp/preauth.h"
-#include "rsn_supp/pmksa_cache.h"
-#include "common/wpa_ctrl.h"
-#include "eap_peer/eap.h"
-#include "ap/hostapd.h"
-#include "notify.h"
-#include "common/ieee802_11_defs.h"
-#include "common/ieee802_11_common.h"
-#include "blacklist.h"
-#include "wpas_glue.h"
-#include "wps_supplicant.h"
-#include "ibss_rsn.h"
-#include "sme.h"
-#include "p2p_supplicant.h"
-#include "bgscan.h"
-#include "ap.h"
-#include "bss.h"
-#include "mlme.h"
-#include "scan.h"
-
-
-static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
-{
- struct wpa_ssid *ssid, *old_ssid;
-
- if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid)
- return 0;
-
- wpa_printf(MSG_DEBUG, "Select network based on association "
- "information");
- ssid = wpa_supplicant_get_ssid(wpa_s);
- if (ssid == NULL) {
- wpa_printf(MSG_INFO, "No network configuration found for the "
- "current AP");
- return -1;
- }
-
- if (ssid->disabled) {
- wpa_printf(MSG_DEBUG, "Selected network is disabled");
- return -1;
- }
-
- wpa_printf(MSG_DEBUG, "Network configuration found for the current "
- "AP");
- if (ssid->key_mgmt & (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X |
- WPA_KEY_MGMT_WPA_NONE |
- WPA_KEY_MGMT_FT_PSK | WPA_KEY_MGMT_FT_IEEE8021X |
- WPA_KEY_MGMT_PSK_SHA256 |
- WPA_KEY_MGMT_IEEE8021X_SHA256)) {
- u8 wpa_ie[80];
- size_t wpa_ie_len = sizeof(wpa_ie);
- wpa_supplicant_set_suites(wpa_s, NULL, ssid,
- wpa_ie, &wpa_ie_len);
- } else {
- wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
- }
-
- if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
- eapol_sm_invalidate_cached_session(wpa_s->eapol);
- old_ssid = wpa_s->current_ssid;
- wpa_s->current_ssid = ssid;
- wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
- wpa_supplicant_initiate_eapol(wpa_s);
- if (old_ssid != wpa_s->current_ssid)
- wpas_notify_network_changed(wpa_s);
-
- return 0;
-}
-
-
-static void wpa_supplicant_stop_countermeasures(void *eloop_ctx,
- void *sock_ctx)
-{
- struct wpa_supplicant *wpa_s = eloop_ctx;
-
- if (wpa_s->countermeasures) {
- wpa_s->countermeasures = 0;
- wpa_drv_set_countermeasures(wpa_s, 0);
- wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
- wpa_supplicant_req_scan(wpa_s, 0, 0);
- }
-}
-
-
-void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
-{
- int bssid_changed;
-
- if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
- return;
-
- wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
- bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
- os_memset(wpa_s->bssid, 0, ETH_ALEN);
- os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
- wpa_s->current_bss = NULL;
- if (bssid_changed)
- wpas_notify_bssid_changed(wpa_s);
-
- eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
- eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
- if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
- eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
- wpa_s->ap_ies_from_associnfo = 0;
-}
-
-
-static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
-{
- struct wpa_ie_data ie;
- int pmksa_set = -1;
- size_t i;
-
- if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
- ie.pmkid == NULL)
- return;
-
- for (i = 0; i < ie.num_pmkid; i++) {
- pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
- ie.pmkid + i * PMKID_LEN,
- NULL, NULL, 0);
- if (pmksa_set == 0) {
- eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
- break;
- }
- }
-
- wpa_printf(MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from PMKSA "
- "cache", pmksa_set == 0 ? "" : "not ");
-}
-
-
-static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
- union wpa_event_data *data)
-{
- if (data == NULL) {
- wpa_printf(MSG_DEBUG, "RSN: No data in PMKID candidate event");
- return;
- }
- wpa_printf(MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
- " index=%d preauth=%d",
- MAC2STR(data->pmkid_candidate.bssid),
- data->pmkid_candidate.index,
- data->pmkid_candidate.preauth);
-
- pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
- data->pmkid_candidate.index,
- data->pmkid_candidate.preauth);
-}
-
-
-static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
-{
- if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
- wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
- return 0;
-
-#ifdef IEEE8021X_EAPOL
- if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
- wpa_s->current_ssid &&
- !(wpa_s->current_ssid->eapol_flags &
- (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
- EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
- /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
- * plaintext or static WEP keys). */
- return 0;
- }
-#endif /* IEEE8021X_EAPOL */
-
- return 1;
-}
-
-
-/**
- * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
- * @wpa_s: pointer to wpa_supplicant data
- * @ssid: Configuration data for the network
- * Returns: 0 on success, -1 on failure
- *
- * This function is called when starting authentication with a network that is
- * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
- */
-int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
- struct wpa_ssid *ssid)
-{
-#ifdef IEEE8021X_EAPOL
- int aka = 0, sim = 0, type;
-
- if (ssid->eap.pcsc == NULL || wpa_s->scard != NULL)
- return 0;
-
- if (ssid->eap.eap_methods == NULL) {
- sim = 1;
- aka = 1;
- } else {
- struct eap_method_type *eap = ssid->eap.eap_methods;
- while (eap->vendor != EAP_VENDOR_IETF ||
- eap->method != EAP_TYPE_NONE) {
- if (eap->vendor == EAP_VENDOR_IETF) {
- if (eap->method == EAP_TYPE_SIM)
- sim = 1;
- else if (eap->method == EAP_TYPE_AKA)
- aka = 1;
- }
- eap++;
- }
- }
-
- if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
- sim = 0;
- if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL)
- aka = 0;
-
- if (!sim && !aka) {
- wpa_printf(MSG_DEBUG, "Selected network is configured to use "
- "SIM, but neither EAP-SIM nor EAP-AKA are enabled");
- return 0;
- }
-
- wpa_printf(MSG_DEBUG, "Selected network is configured to use SIM "
- "(sim=%d aka=%d) - initialize PCSC", sim, aka);
- if (sim && aka)
- type = SCARD_TRY_BOTH;
- else if (aka)
- type = SCARD_USIM_ONLY;
- else
- type = SCARD_GSM_SIM_ONLY;
-
- wpa_s->scard = scard_init(type);
- if (wpa_s->scard == NULL) {
- wpa_printf(MSG_WARNING, "Failed to initialize SIM "
- "(pcsc-lite)");
- return -1;
- }
- wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
- eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
-#endif /* IEEE8021X_EAPOL */
-
- return 0;
-}
-
-
-#ifndef CONFIG_NO_SCAN_PROCESSING
-static int wpa_supplicant_match_privacy(struct wpa_scan_res *bss,
- struct wpa_ssid *ssid)
-{
- int i, privacy = 0;
-
- if (ssid->mixed_cell)
- return 1;
-
-#ifdef CONFIG_WPS
- if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
- return 1;
-#endif /* CONFIG_WPS */
-
- for (i = 0; i < NUM_WEP_KEYS; i++) {
- if (ssid->wep_key_len[i]) {
- privacy = 1;
- break;
- }
- }
-#ifdef IEEE8021X_EAPOL
- if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
- ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
- EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
- privacy = 1;
-#endif /* IEEE8021X_EAPOL */
-
- if (bss->caps & IEEE80211_CAP_PRIVACY)
- return privacy;
- return !privacy;
-}
-
-
-static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
- struct wpa_ssid *ssid,
- struct wpa_scan_res *bss)
-{
- struct wpa_ie_data ie;
- int proto_match = 0;
- const u8 *rsn_ie, *wpa_ie;
- int ret;
-
- ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
- if (ret >= 0)
- return ret;
-
- rsn_ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
- while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
- proto_match++;
-
- if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
- wpa_printf(MSG_DEBUG, " skip RSN IE - parse failed");
- break;
- }
- if (!(ie.proto & ssid->proto)) {
- wpa_printf(MSG_DEBUG, " skip RSN IE - proto "
- "mismatch");
- break;
- }
-
- if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
- wpa_printf(MSG_DEBUG, " skip RSN IE - PTK cipher "
- "mismatch");
- break;
- }
-
- if (!(ie.group_cipher & ssid->group_cipher)) {
- wpa_printf(MSG_DEBUG, " skip RSN IE - GTK cipher "
- "mismatch");
- break;
- }
-
- if (!(ie.key_mgmt & ssid->key_mgmt)) {
- wpa_printf(MSG_DEBUG, " skip RSN IE - key mgmt "
- "mismatch");
- break;
- }
-
-#ifdef CONFIG_IEEE80211W
- if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
- ssid->ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED) {
- wpa_printf(MSG_DEBUG, " skip RSN IE - no mgmt frame "
- "protection");
- break;
- }
-#endif /* CONFIG_IEEE80211W */
-
- wpa_printf(MSG_DEBUG, " selected based on RSN IE");
- return 1;
- }
-
- wpa_ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
- while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
- proto_match++;
-
- if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
- wpa_printf(MSG_DEBUG, " skip WPA IE - parse failed");
- break;
- }
- if (!(ie.proto & ssid->proto)) {
- wpa_printf(MSG_DEBUG, " skip WPA IE - proto "
- "mismatch");
- break;
- }
-
- if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
- wpa_printf(MSG_DEBUG, " skip WPA IE - PTK cipher "
- "mismatch");
- break;
- }
-
- if (!(ie.group_cipher & ssid->group_cipher)) {
- wpa_printf(MSG_DEBUG, " skip WPA IE - GTK cipher "
- "mismatch");
- break;
- }
-
- if (!(ie.key_mgmt & ssid->key_mgmt)) {
- wpa_printf(MSG_DEBUG, " skip WPA IE - key mgmt "
- "mismatch");
- break;
- }
-
- wpa_printf(MSG_DEBUG, " selected based on WPA IE");
- return 1;
- }
-
- if (proto_match == 0)
- wpa_printf(MSG_DEBUG, " skip - no WPA/RSN proto match");
-
- return 0;
-}
-
-
-static int freq_allowed(int *freqs, int freq)
-{
- int i;
-
- if (freqs == NULL)
- return 1;
-
- for (i = 0; freqs[i]; i++)
- if (freqs[i] == freq)
- return 1;
- return 0;
-}
-
-
-static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
- int i, struct wpa_scan_res *bss,
- struct wpa_ssid *group)
-{
- const u8 *ssid_;
- u8 wpa_ie_len, rsn_ie_len, ssid_len;
- int wpa;
- struct wpa_blacklist *e;
- const u8 *ie;
- struct wpa_ssid *ssid;
-
- 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 level=%d%s",
- i, MAC2STR(bss->bssid), wpa_ssid_txt(ssid_, ssid_len),
- wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
- wpa_scan_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ?
- " wps" : "");
-
- e = wpa_blacklist_get(wpa_s, bss->bssid);
- if (e && e->count > 1) {
- wpa_printf(MSG_DEBUG, " skip - blacklisted");
- return 0;
- }
-
- if (ssid_len == 0) {
- wpa_printf(MSG_DEBUG, " skip - SSID not known");
- return 0;
- }
-
- wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
-
- for (ssid = group; ssid; ssid = ssid->pnext) {
- int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
-
- if (ssid->disabled) {
- wpa_printf(MSG_DEBUG, " skip - disabled");
- continue;
- }
-
-#ifdef CONFIG_WPS
- if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
- wpa_printf(MSG_DEBUG, " skip - blacklisted (WPS)");
- continue;
- }
-
- if (wpa && ssid->ssid_len == 0 &&
- wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
- check_ssid = 0;
-
- if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
- /* Only allow wildcard SSID match if an AP
- * advertises active WPS operation that matches
- * with our mode. */
- check_ssid = 1;
- if (ssid->ssid_len == 0 &&
- wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
- check_ssid = 0;
- }
-#endif /* CONFIG_WPS */
-
- if (check_ssid &&
- (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 && !wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
- continue;
-
- if (!wpa &&
- !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
- !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
- !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
- wpa_printf(MSG_DEBUG, " skip - non-WPA network not "
- "allowed");
- continue;
- }
-
- if (!wpa && !wpa_supplicant_match_privacy(bss, ssid)) {
- wpa_printf(MSG_DEBUG, " skip - privacy mismatch");
- continue;
- }
-
- if (!wpa && (bss->caps & IEEE80211_CAP_IBSS)) {
- wpa_printf(MSG_DEBUG, " skip - IBSS (adhoc) "
- "network");
- continue;
- }
-
- if (!freq_allowed(ssid->freq_list, bss->freq)) {
- wpa_printf(MSG_DEBUG, " skip - frequency not "
- "allowed");
- continue;
- }
-
-#ifdef CONFIG_P2P
- /*
- * TODO: skip the AP if its P2P IE has Group Formation
- * bit set in the P2P Group Capability Bitmap and we
- * are not in Group Formation with that device.
- */
-#endif /* CONFIG_P2P */
-
- /* Matching configuration found */
- return ssid;
- }
-
- /* No matching configuration found */
- return 0;
-}
-
-
-static struct wpa_bss *
-wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
- struct wpa_scan_results *scan_res,
- struct wpa_ssid *group,
- struct wpa_ssid **selected_ssid)
-{
- size_t i;
-
- wpa_printf(MSG_DEBUG, "Selecting BSS from priority group %d",
- group->priority);
-
- for (i = 0; i < scan_res->num; i++) {
- struct wpa_scan_res *bss = scan_res->res[i];
- const u8 *ie, *ssid;
- u8 ssid_len;
-
- *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group);
- if (!*selected_ssid)
- continue;
-
- ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
- ssid = ie ? ie + 2 : (u8 *) "";
- ssid_len = ie ? ie[1] : 0;
-
- wpa_printf(MSG_DEBUG, " selected BSS " MACSTR " ssid='%s'",
- MAC2STR(bss->bssid), wpa_ssid_txt(ssid, ssid_len));
- return wpa_bss_get(wpa_s, bss->bssid, ssid, ssid_len);
- }
-
- return NULL;
-}
-
-
-static struct wpa_bss *
-wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
- struct wpa_scan_results *scan_res,
- struct wpa_ssid **selected_ssid)
-{
- struct wpa_bss *selected = NULL;
- int prio;
-
- while (selected == NULL) {
- for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
- selected = wpa_supplicant_select_bss(
- wpa_s, scan_res, wpa_s->conf->pssid[prio],
- selected_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);
- wpa_s->blacklist_cleared++;
- } else if (selected == NULL)
- break;
- }
-
- return selected;
-}
-
-
-static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
- int timeout_sec, int timeout_usec)
-{
- if (!wpa_supplicant_enabled_networks(wpa_s->conf)) {
- /*
- * No networks are enabled; short-circuit request so
- * we don't wait timeout seconds before transitioning
- * to INACTIVE state.
- */
- wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
- return;
- }
- wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
-}
-
-
-void wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
- struct wpa_bss *selected,
- struct wpa_ssid *ssid)
-{
- if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
- wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
- "PBC session overlap");
-#ifdef CONFIG_P2P
- if (wpas_p2p_notif_pbc_overlap(wpa_s) == 1)
- return;
-#endif /* CONFIG_P2P */
-
-#ifdef CONFIG_WPS
- wpas_wps_cancel(wpa_s);
-#endif /* CONFIG_WPS */
- return;
- }
-
- /*
- * 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_new_scan(wpa_s, 10, 0);
- return;
- }
- wpa_supplicant_associate(wpa_s, selected, ssid);
- } else {
- wpa_printf(MSG_DEBUG, "Already associated with the selected "
- "AP");
- }
-}
-
-
-static struct wpa_ssid *
-wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
-{
- int prio;
- struct wpa_ssid *ssid;
-
- for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
- for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
- {
- if (ssid->disabled)
- continue;
- if (ssid->mode == IEEE80211_MODE_IBSS ||
- ssid->mode == IEEE80211_MODE_AP)
- return ssid;
- }
- }
- return NULL;
-}
-
-
-/* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
- * on BSS added and BSS changed events */
-static void wpa_supplicant_rsn_preauth_scan_results(
- struct wpa_supplicant *wpa_s, struct wpa_scan_results *scan_res)
-{
- int i;
-
- if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
- return;
-
- for (i = scan_res->num - 1; i >= 0; i--) {
- const u8 *ssid, *rsn;
- struct wpa_scan_res *r;
-
- r = scan_res->res[i];
-
- ssid = wpa_scan_get_ie(r, WLAN_EID_SSID);
- if (ssid == NULL)
- continue;
-
- rsn = wpa_scan_get_ie(r, WLAN_EID_RSN);
- if (rsn == NULL)
- continue;
-
- rsn_preauth_scan_result(wpa_s->wpa, r->bssid, ssid, rsn);
- }
-
-}
-
-
-static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
- struct wpa_bss *selected,
- struct wpa_ssid *ssid,
- struct wpa_scan_results *scan_res)
-{
- size_t i;
- struct wpa_scan_res *current_bss = NULL;
- int min_diff;
-
- if (wpa_s->reassociate)
- return 1; /* explicit request to reassociate */
- if (wpa_s->wpa_state < WPA_ASSOCIATED)
- return 1; /* we are not associated; continue */
- if (wpa_s->current_ssid == NULL)
- return 1; /* unknown current SSID */
- if (wpa_s->current_ssid != ssid)
- return 1; /* different network block */
-
- for (i = 0; i < scan_res->num; i++) {
- struct wpa_scan_res *res = scan_res->res[i];
- const u8 *ie;
- if (os_memcmp(res->bssid, wpa_s->bssid, ETH_ALEN) != 0)
- continue;
-
- ie = wpa_scan_get_ie(res, WLAN_EID_SSID);
- if (ie == NULL)
- continue;
- if (ie[1] != wpa_s->current_ssid->ssid_len ||
- os_memcmp(ie + 2, wpa_s->current_ssid->ssid, ie[1]) != 0)
- continue;
- current_bss = res;
- break;
- }
-
- if (!current_bss)
- return 1; /* current BSS not seen in scan results */
-
- wpa_printf(MSG_DEBUG, "Considering within-ESS reassociation");
- wpa_printf(MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
- MAC2STR(current_bss->bssid), current_bss->level);
- wpa_printf(MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
- MAC2STR(selected->bssid), selected->level);
-
- if (wpa_s->current_ssid->bssid_set &&
- os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
- 0) {
- wpa_printf(MSG_DEBUG, "Allow reassociation - selected BSS has "
- "preferred BSSID");
- return 1;
- }
-
- min_diff = 2;
- if (current_bss->level < 0) {
- if (current_bss->level < -85)
- min_diff = 1;
- else if (current_bss->level < -80)
- min_diff = 2;
- else if (current_bss->level < -75)
- min_diff = 3;
- else if (current_bss->level < -70)
- min_diff = 4;
- else
- min_diff = 5;
- }
- if (abs(current_bss->level - selected->level) < min_diff) {
- wpa_printf(MSG_DEBUG, "Skip roam - too small difference in "
- "signal level");
- return 0;
- }
-
- return 1;
-}
-
-
-static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
- union wpa_event_data *data)
-{
- struct wpa_bss *selected;
- struct wpa_ssid *ssid = NULL;
- struct wpa_scan_results *scan_res;
- int ap = 0;
-
-#ifdef CONFIG_AP
- if (wpa_s->ap_iface)
- ap = 1;
-#endif /* CONFIG_AP */
-
- wpa_supplicant_notify_scanning(wpa_s, 0);
-
- scan_res = wpa_supplicant_get_scan_results(wpa_s,
- data ? &data->scan_info :
- NULL, 1);
- if (scan_res == NULL) {
- if (wpa_s->conf->ap_scan == 2 || ap)
- return;
- wpa_printf(MSG_DEBUG, "Failed to get scan results - try "
- "scanning again");
- wpa_supplicant_req_new_scan(wpa_s, 1, 0);
- return;
- }
-
- if (wpa_s->scan_res_handler) {
- wpa_s->scan_res_handler(wpa_s, scan_res);
- wpa_s->scan_res_handler = NULL;
- wpa_scan_results_free(scan_res);
- return;
- }
-
- if (ap) {
- wpa_printf(MSG_DEBUG, "Ignore scan results in AP mode");
- wpa_scan_results_free(scan_res);
- return;
- }
-
- wpa_printf(MSG_DEBUG, "New scan results available");
- wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
- wpas_notify_scan_results(wpa_s);
-
- wpas_notify_scan_done(wpa_s, 1);
-
- if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s))) {
- wpa_scan_results_free(scan_res);
- return;
- }
-
- if (wpa_s->disconnected) {
- wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
- wpa_scan_results_free(scan_res);
- return;
- }
-
- if (bgscan_notify_scan(wpa_s, scan_res) == 1) {
- wpa_scan_results_free(scan_res);
- return;
- }
-
- wpa_supplicant_rsn_preauth_scan_results(wpa_s, scan_res);
-
- selected = wpa_supplicant_pick_network(wpa_s, scan_res, &ssid);
-
- if (selected) {
- int skip;
- skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid,
- scan_res);
- wpa_scan_results_free(scan_res);
- if (skip)
- return;
- wpa_supplicant_connect(wpa_s, selected, ssid);
- } else {
- wpa_scan_results_free(scan_res);
- wpa_printf(MSG_DEBUG, "No suitable network found");
- ssid = wpa_supplicant_pick_new_network(wpa_s);
- if (ssid) {
- wpa_printf(MSG_DEBUG, "Setup a new network");
- wpa_supplicant_associate(wpa_s, NULL, ssid);
- } else {
- int timeout_sec = 5;
- int timeout_usec = 0;
-#ifdef CONFIG_P2P
- if (wpa_s->p2p_in_provisioning) {
- /*
- * Use shorter wait during P2P Provisioning
- * state to speed up group formation.
- */
- timeout_sec = 0;
- timeout_usec = 250000;
- }
-#endif /* CONFIG_P2P */
- wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
- timeout_usec);
- }
- }
-}
-#endif /* CONFIG_NO_SCAN_PROCESSING */
-
-
-static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
- union wpa_event_data *data)
-{
- int l, len, found = 0, wpa_found, rsn_found;
- const 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);
- if (data->assoc_info.freq)
- wpa_printf(MSG_DEBUG, "freq=%u MHz", data->assoc_info.freq);
-
- 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);
-
-#ifdef CONFIG_IEEE80211R
-#ifdef CONFIG_SME
- if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
- u8 bssid[ETH_ALEN];
- if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
- wpa_ft_validate_reassoc_resp(wpa_s->wpa,
- data->assoc_info.resp_ies,
- data->assoc_info.resp_ies_len,
- bssid) < 0) {
- wpa_printf(MSG_DEBUG, "FT: Validation of "
- "Reassociation Response failed");
- wpa_supplicant_deauthenticate(
- wpa_s, WLAN_REASON_INVALID_IE);
- return -1;
- }
- }
-
- p = data->assoc_info.resp_ies;
- l = data->assoc_info.resp_ies_len;
-
-#ifdef CONFIG_WPS_STRICT
- if (wpa_s->current_ssid &&
- wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
- struct wpabuf *wps;
- wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
- if (wps == NULL) {
- wpa_printf(MSG_INFO, "WPS-STRICT: AP did not include "
- "WPS IE in (Re)Association Response");
- return -1;
- }
-
- if (wps_validate_assoc_resp(wps) < 0) {
- wpabuf_free(wps);
- wpa_supplicant_deauthenticate(
- wpa_s, WLAN_REASON_INVALID_IE);
- return -1;
- }
- wpabuf_free(wps);
- }
-#endif /* CONFIG_WPS_STRICT */
-
- /* Go through the IEs and make a copy of the MDIE, 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_MOBILITY_DOMAIN &&
- p[1] >= MOBILITY_DOMAIN_ID_LEN) {
- wpa_s->sme.ft_used = 1;
- os_memcpy(wpa_s->sme.mobility_domain, p + 2,
- MOBILITY_DOMAIN_ID_LEN);
- break;
- }
- l -= len;
- p += len;
- }
-#endif /* CONFIG_SME */
-
- wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
- data->assoc_info.resp_ies_len);
-#endif /* CONFIG_IEEE80211R */
-
- /* 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;
-
- wpa_s->assoc_freq = data->assoc_info.freq;
-
- return 0;
-}
-
-
-static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
- union wpa_event_data *data)
-{
- u8 bssid[ETH_ALEN];
- int ft_completed;
- int bssid_changed;
- struct wpa_driver_capa capa;
-
-#ifdef CONFIG_AP
- if (wpa_s->ap_iface) {
- hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
- data->assoc_info.addr,
- data->assoc_info.req_ies,
- data->assoc_info.req_ies_len);
- return;
- }
-#endif /* CONFIG_AP */
-
- ft_completed = wpa_ft_is_completed(wpa_s->wpa);
- if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
- return;
-
- wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
- if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
- os_memcpy(bssid, wpa_s->bssid, ETH_ALEN);
- if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_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));
- bssid_changed = os_memcmp(wpa_s->bssid, bssid, ETH_ALEN);
- os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
- os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
- if (bssid_changed)
- wpas_notify_bssid_changed(wpa_s);
-
- 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;
- }
- if (wpa_s->current_ssid) {
- struct wpa_bss *bss = NULL;
- struct wpa_ssid *ssid = wpa_s->current_ssid;
- if (ssid->ssid_len > 0)
- bss = wpa_bss_get(wpa_s, bssid,
- ssid->ssid, ssid->ssid_len);
- if (!bss)
- bss = wpa_bss_get_bssid(wpa_s, bssid);
- if (bss)
- wpa_s->current_bss = bss;
- }
- }
-
-#ifdef CONFIG_SME
- os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
- wpa_s->sme.prev_bssid_set = 1;
-#endif /* CONFIG_SME */
-
- 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);
- if (wpa_s->l2)
- 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_key_mgmt_wpa_psk(wpa_s->key_mgmt) || 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_s->current_ssid &&
- wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
- 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->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
- wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
- /*
- * 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);
- }
-
- if (wpa_s->pending_eapol_rx) {
- struct os_time now, age;
- os_get_time(&now);
- os_time_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
- if (age.sec == 0 && age.usec < 100000 &&
- os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
- 0) {
- wpa_printf(MSG_DEBUG, "Process pending EAPOL frame "
- "that was received just before association "
- "notification");
- wpa_supplicant_rx_eapol(
- wpa_s, wpa_s->pending_eapol_rx_src,
- wpabuf_head(wpa_s->pending_eapol_rx),
- wpabuf_len(wpa_s->pending_eapol_rx));
- }
- wpabuf_free(wpa_s->pending_eapol_rx);
- wpa_s->pending_eapol_rx = NULL;
- }
-
-#ifdef CONFIG_BGSCAN
- if (wpa_s->current_ssid != wpa_s->bgscan_ssid) {
- bgscan_deinit(wpa_s);
- if (wpa_s->current_ssid && wpa_s->current_ssid->bgscan) {
- if (bgscan_init(wpa_s, wpa_s->current_ssid)) {
- wpa_printf(MSG_DEBUG, "Failed to initialize "
- "bgscan");
- /*
- * Live without bgscan; it is only used as a
- * roaming optimization, so the initial
- * connection is not affected.
- */
- } else
- wpa_s->bgscan_ssid = wpa_s->current_ssid;
- } else
- wpa_s->bgscan_ssid = NULL;
- }
-#endif /* CONFIG_BGSCAN */
-
- if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
- wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
- wpa_s->current_ssid && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
- capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE) {
- /* Set static WEP keys again */
- wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
- }
-}
-
-
-static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
- u16 reason_code)
-{
- const u8 *bssid;
-#ifdef CONFIG_SME
- int authenticating;
- u8 prev_pending_bssid[ETH_ALEN];
-
- authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
- os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
-#endif /* CONFIG_SME */
-
- 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_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
- wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
- "pre-shared key may be incorrect");
- }
- if (!wpa_s->auto_reconnect_disabled ||
- wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) {
- wpa_printf(MSG_DEBUG, "WPA: Auto connect enabled: try to "
- "reconnect (wps=%d)",
- wpa_s->key_mgmt == WPA_KEY_MGMT_WPS);
- if (wpa_s->wpa_state >= WPA_ASSOCIATING)
- wpa_supplicant_req_scan(wpa_s, 0, 100000);
- } else {
- wpa_printf(MSG_DEBUG, "WPA: Auto connect disabled: do not try "
- "to re-connect");
- wpa_s->reassociate = 0;
- wpa_s->disconnected = 1;
- }
- bssid = wpa_s->bssid;
- if (is_zero_ether_addr(bssid))
- 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 "bssid=" MACSTR
- " reason=%d",
- MAC2STR(bssid), reason_code);
- if (wpa_supplicant_dynamic_keys(wpa_s)) {
- wpa_printf(MSG_DEBUG, "Disconnect event - remove keys");
- wpa_s->keys_cleared = 0;
- wpa_clear_keys(wpa_s, wpa_s->bssid);
- }
- wpa_supplicant_mark_disassoc(wpa_s);
- bgscan_deinit(wpa_s);
- wpa_s->bgscan_ssid = NULL;
-#ifdef CONFIG_SME
- if (authenticating &&
- (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
- /*
- * mac80211-workaround to force deauth on failed auth cmd,
- * requires us to remain in authenticating state to allow the
- * second authentication attempt to be continued properly.
- */
- wpa_printf(MSG_DEBUG, "SME: Allow pending authentication to "
- "proceed after disconnection event");
- wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
- os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
- }
-#endif /* CONFIG_SME */
-}
-
-
-#ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
-static void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx,
- void *sock_ctx)
-{
- struct wpa_supplicant *wpa_s = eloop_ctx;
-
- if (!wpa_s->pending_mic_error_report)
- return;
-
- wpa_printf(MSG_DEBUG, "WPA: Sending pending MIC error report");
- wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
- wpa_s->pending_mic_error_report = 0;
-}
-#endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
-
-
-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);
- os_get_time(&t);
- if ((wpa_s->last_michael_mic_error &&
- t.sec - wpa_s->last_michael_mic_error <= 60) ||
- wpa_s->pending_mic_error_report) {
- if (wpa_s->pending_mic_error_report) {
- /*
- * Send the pending MIC error report immediately since
- * we are going to start countermeasures and AP better
- * do the same.
- */
- wpa_sm_key_request(wpa_s->wpa, 1,
- wpa_s->pending_mic_error_pairwise);
- }
-
- /* Send the new MIC error report immediately since we are going
- * to start countermeasures and AP better do the same.
- */
- wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
-
- /* 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.. */
- } else {
-#ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
- if (wpa_s->mic_errors_seen) {
- /*
- * Reduce the effectiveness of Michael MIC error
- * reports as a means for attacking against TKIP if
- * more than one MIC failure is noticed with the same
- * PTK. We delay the transmission of the reports by a
- * random time between 0 and 60 seconds in order to
- * force the attacker wait 60 seconds before getting
- * the information on whether a frame resulted in a MIC
- * failure.
- */
- u8 rval[4];
- int sec;
-
- if (os_get_random(rval, sizeof(rval)) < 0)
- sec = os_random() % 60;
- else
- sec = WPA_GET_BE32(rval) % 60;
- wpa_printf(MSG_DEBUG, "WPA: Delay MIC error report %d "
- "seconds", sec);
- wpa_s->pending_mic_error_report = 1;
- wpa_s->pending_mic_error_pairwise = pairwise;
- eloop_cancel_timeout(
- wpa_supplicant_delayed_mic_error_report,
- wpa_s, NULL);
- eloop_register_timeout(
- sec, os_random() % 1000000,
- wpa_supplicant_delayed_mic_error_report,
- wpa_s, NULL);
- } else {
- wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
- }
-#else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
- wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
-#endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
- }
- wpa_s->last_michael_mic_error = t.sec;
- wpa_s->mic_errors_seen++;
-}
-
-
-#ifdef CONFIG_TERMINATE_ONLASTIF
-static int any_interfaces(struct wpa_supplicant *head)
-{
- struct wpa_supplicant *wpa_s;
-
- for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
- if (!wpa_s->interface_removed)
- return 1;
- return 0;
-}
-#endif /* CONFIG_TERMINATE_ONLASTIF */
-
-
-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;
-#ifdef CONFIG_TERMINATE_ONLASTIF
- /* check if last interface */
- if (!any_interfaces(wpa_s->global->ifaces))
- eloop_terminate();
-#endif /* CONFIG_TERMINATE_ONLASTIF */
- 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,
- data->ft_ies.ric_ies,
- data->ft_ies.ric_ies_len) < 0) {
- /* TODO: prevent MLME/driver from trying to associate? */
- }
-}
-#endif /* CONFIG_IEEE80211R */
-
-
-#ifdef CONFIG_IBSS_RSN
-static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
- union wpa_event_data *data)
-{
- if (data == NULL)
- return;
- ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
-}
-#endif /* CONFIG_IBSS_RSN */
-
-
-#ifdef CONFIG_IEEE80211R
-static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
- size_t len)
-{
- const u8 *sta_addr, *target_ap_addr;
- u16 status;
-
- wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
- if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
- return; /* only SME case supported for now */
- if (len < 1 + 2 * ETH_ALEN + 2)
- return;
- if (data[0] != 2)
- return; /* Only FT Action Response is supported for now */
- sta_addr = data + 1;
- target_ap_addr = data + 1 + ETH_ALEN;
- status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
- wpa_printf(MSG_DEBUG, "FT: Received FT Action Response: STA " MACSTR
- " TargetAP " MACSTR " status %u",
- MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
-
- if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
- wpa_printf(MSG_DEBUG, "FT: Foreign STA Address " MACSTR
- " in FT Action Response", MAC2STR(sta_addr));
- return;
- }
-
- if (status) {
- wpa_printf(MSG_DEBUG, "FT: FT Action Response indicates "
- "failure (status code %d)", status);
- /* TODO: report error to FT code(?) */
- return;
- }
-
- if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
- len - (1 + 2 * ETH_ALEN + 2), 1,
- target_ap_addr, NULL, 0) < 0)
- return;
-
-#ifdef CONFIG_SME
- {
- struct wpa_bss *bss;
- bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
- if (bss)
- wpa_s->sme.freq = bss->freq;
- wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
- sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
- WLAN_AUTH_FT);
- }
-#endif /* CONFIG_SME */
-}
-#endif /* CONFIG_IEEE80211R */
-
-
-void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
- union wpa_event_data *data)
-{
- struct wpa_supplicant *wpa_s = ctx;
- u16 reason_code = 0;
-
- if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
- event != EVENT_INTERFACE_ENABLED &&
- event != EVENT_INTERFACE_STATUS) {
- wpa_printf(MSG_DEBUG, "Ignore event %d while interface is "
- "disabled", event);
- return;
- }
-
- wpa_printf(MSG_DEBUG, "Event %d received on interface %s",
- event, wpa_s->ifname);
-
- switch (event) {
- case EVENT_AUTH:
- sme_event_auth(wpa_s, data);
- break;
- case EVENT_ASSOC:
- wpa_supplicant_event_assoc(wpa_s, data);
- break;
- case EVENT_DISASSOC:
- wpa_printf(MSG_DEBUG, "Disassociation notification");
- if (data) {
- wpa_printf(MSG_DEBUG, " * reason %u",
- data->disassoc_info.reason_code);
- if (data->disassoc_info.addr)
- wpa_printf(MSG_DEBUG, " * address " MACSTR,
- MAC2STR(data->disassoc_info.addr));
- }
-#ifdef CONFIG_AP
- if (wpa_s->ap_iface && data && data->disassoc_info.addr) {
- hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
- data->disassoc_info.addr);
- break;
- }
-#endif /* CONFIG_AP */
- if (data) {
- reason_code = data->disassoc_info.reason_code;
- wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
- data->disassoc_info.ie,
- data->disassoc_info.ie_len);
-#ifdef CONFIG_P2P
- wpas_p2p_disassoc_notif(
- wpa_s, data->disassoc_info.addr, reason_code,
- data->disassoc_info.ie,
- data->disassoc_info.ie_len);
-#endif /* CONFIG_P2P */
- }
- if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
- sme_event_disassoc(wpa_s, data);
- /* fall through */
- case EVENT_DEAUTH:
- if (event == EVENT_DEAUTH) {
- wpa_printf(MSG_DEBUG, "Deauthentication notification");
- if (data) {
- reason_code = data->deauth_info.reason_code;
- wpa_printf(MSG_DEBUG, " * reason %u",
- data->deauth_info.reason_code);
- if (data->deauth_info.addr) {
- wpa_printf(MSG_DEBUG, " * address "
- MACSTR,
- MAC2STR(data->deauth_info.
- addr));
- }
- wpa_hexdump(MSG_DEBUG,
- "Deauthentication frame IE(s)",
- data->deauth_info.ie,
- data->deauth_info.ie_len);
-#ifdef CONFIG_P2P
- wpas_p2p_deauth_notif(
- wpa_s, data->deauth_info.addr,
- reason_code,
- data->deauth_info.ie,
- data->deauth_info.ie_len);
-#endif /* CONFIG_P2P */
- }
- }
-#ifdef CONFIG_AP
- if (wpa_s->ap_iface && data && data->deauth_info.addr) {
- hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
- data->deauth_info.addr);
- break;
- }
-#endif /* CONFIG_AP */
- wpa_supplicant_event_disassoc(wpa_s, reason_code);
- 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, data);
- 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 */
-#ifdef CONFIG_IBSS_RSN
- case EVENT_IBSS_RSN_START:
- wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
- break;
-#endif /* CONFIG_IBSS_RSN */
- case EVENT_ASSOC_REJECT:
- sme_event_assoc_reject(wpa_s, data);
- break;
- case EVENT_AUTH_TIMED_OUT:
- sme_event_auth_timed_out(wpa_s, data);
- break;
- case EVENT_ASSOC_TIMED_OUT:
- sme_event_assoc_timed_out(wpa_s, data);
- break;
-#ifdef CONFIG_AP
- case EVENT_TX_STATUS:
- wpa_printf(MSG_DEBUG, "EVENT_TX_STATUS on %s dst=" MACSTR
- " type=%d stype=%d pending_dst=" MACSTR,
- wpa_s->ifname, MAC2STR(data->tx_status.dst),
- data->tx_status.type, data->tx_status.stype,
- MAC2STR(wpa_s->parent->pending_action_dst));
- if (wpa_s->ap_iface == NULL) {
-#ifdef CONFIG_P2P
- if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
- data->tx_status.stype == WLAN_FC_STYPE_ACTION)
- wpas_send_action_tx_status(
- wpa_s, data->tx_status.dst,
- data->tx_status.data,
- data->tx_status.data_len,
- data->tx_status.ack);
-#endif /* CONFIG_P2P */
- break;
- }
-#ifdef CONFIG_P2P
- /*
- * Catch TX status events for Action frames we sent via group
- * interface in GO mode.
- */
- if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
- data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
- os_memcmp(wpa_s->parent->pending_action_dst,
- data->tx_status.dst, ETH_ALEN) == 0) {
- wpas_send_action_tx_status(
- wpa_s->parent, data->tx_status.dst,
- data->tx_status.data,
- data->tx_status.data_len,
- data->tx_status.ack);
- break;
- }
-#endif /* CONFIG_P2P */
- switch (data->tx_status.type) {
- case WLAN_FC_TYPE_MGMT:
- ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
- data->tx_status.data_len,
- data->tx_status.stype,
- data->tx_status.ack);
- break;
- case WLAN_FC_TYPE_DATA:
- ap_tx_status(wpa_s, data->tx_status.dst,
- data->tx_status.data,
- data->tx_status.data_len,
- data->tx_status.ack);
- break;
- }
- break;
- case EVENT_RX_FROM_UNKNOWN:
- if (wpa_s->ap_iface == NULL)
- break;
- ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.frame,
- data->rx_from_unknown.len);
- break;
- case EVENT_RX_MGMT:
- if (wpa_s->ap_iface == NULL) {
-#ifdef CONFIG_P2P
- u16 fc, stype;
- const struct ieee80211_mgmt *mgmt;
- mgmt = (const struct ieee80211_mgmt *)
- data->rx_mgmt.frame;
- fc = le_to_host16(mgmt->frame_control);
- stype = WLAN_FC_GET_STYPE(fc);
- if (stype == WLAN_FC_STYPE_PROBE_REQ &&
- data->rx_mgmt.frame_len > 24) {
- const u8 *src = mgmt->sa;
- const u8 *ie = mgmt->u.probe_req.variable;
- size_t ie_len = data->rx_mgmt.frame_len -
- (mgmt->u.probe_req.variable -
- data->rx_mgmt.frame);
- wpas_p2p_probe_req_rx(wpa_s, src, ie, ie_len);
- break;
- }
-#endif /* CONFIG_P2P */
- wpa_printf(MSG_DEBUG, "AP: ignore received management "
- "frame in non-AP mode");
- break;
- }
- ap_mgmt_rx(wpa_s, &data->rx_mgmt);
- break;
-#endif /* CONFIG_AP */
- case EVENT_RX_ACTION:
- wpa_printf(MSG_DEBUG, "Received Action frame: SA=" MACSTR
- " Category=%u DataLen=%d freq=%d MHz",
- MAC2STR(data->rx_action.sa),
- data->rx_action.category, (int) data->rx_action.len,
- data->rx_action.freq);
-#ifdef CONFIG_IEEE80211R
- if (data->rx_action.category == WLAN_ACTION_FT) {
- ft_rx_action(wpa_s, data->rx_action.data,
- data->rx_action.len);
- break;
- }
-#endif /* CONFIG_IEEE80211R */
-#ifdef CONFIG_P2P
- wpas_p2p_rx_action(wpa_s, data->rx_action.da,
- data->rx_action.sa,
- data->rx_action.bssid,
- data->rx_action.category,
- data->rx_action.data,
- data->rx_action.len, data->rx_action.freq);
-#endif /* CONFIG_P2P */
- break;
-#ifdef CONFIG_P2P
- case EVENT_REMAIN_ON_CHANNEL:
- wpas_p2p_remain_on_channel_cb(
- wpa_s, data->remain_on_channel.freq,
- data->remain_on_channel.duration);
- break;
- case EVENT_CANCEL_REMAIN_ON_CHANNEL:
- wpas_p2p_cancel_remain_on_channel_cb(
- wpa_s, data->remain_on_channel.freq);
- break;
- case EVENT_RX_PROBE_REQ:
- wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
- data->rx_probe_req.ie,
- data->rx_probe_req.ie_len);
- break;
-#endif /* CONFIG_P2P */
-#ifdef CONFIG_CLIENT_MLME
- case EVENT_MLME_RX: {
- struct ieee80211_rx_status rx_status;
- os_memset(&rx_status, 0, sizeof(rx_status));
- rx_status.freq = data->mlme_rx.freq;
- rx_status.channel = data->mlme_rx.channel;
- rx_status.ssi = data->mlme_rx.ssi;
- ieee80211_sta_rx(wpa_s, data->mlme_rx.buf, data->mlme_rx.len,
- &rx_status);
- break;
- }
-#endif /* CONFIG_CLIENT_MLME */
- case EVENT_EAPOL_RX:
- wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
- data->eapol_rx.data,
- data->eapol_rx.data_len);
- break;
- case EVENT_SIGNAL_CHANGE:
- bgscan_notify_signal_change(
- wpa_s, data->signal_change.above_threshold,
- data->signal_change.current_signal,
- data->signal_change.current_noise,
- data->signal_change.current_txrate);
- break;
- case EVENT_INTERFACE_ENABLED:
- wpa_printf(MSG_DEBUG, "Interface was enabled");
- if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
-#ifdef CONFIG_AP
- if (!wpa_s->ap_iface) {
- wpa_supplicant_set_state(wpa_s,
- WPA_DISCONNECTED);
- wpa_supplicant_req_scan(wpa_s, 0, 0);
- } else
- wpa_supplicant_set_state(wpa_s,
- WPA_COMPLETED);
-#else /* CONFIG_AP */
- wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
- wpa_supplicant_req_scan(wpa_s, 0, 0);
-#endif /* CONFIG_AP */
- }
- break;
- case EVENT_INTERFACE_DISABLED:
- wpa_printf(MSG_DEBUG, "Interface was disabled");
- wpa_supplicant_mark_disassoc(wpa_s);
- wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
- break;
- case EVENT_CHANNEL_LIST_CHANGED:
-#ifdef CONFIG_P2P
- wpas_p2p_update_channel_list(wpa_s);
-#endif /* CONFIG_P2P */
- break;
- default:
- wpa_printf(MSG_INFO, "Unknown event %d", event);
- break;
- }
-}
projects / mech_eap.git / blobdiff