Moved TKIP countermeasures from hostapd.c to its own file
This commit is contained in:
Jouni Malinen
Jouni Malinen
parent
9302c5e19c
commit
81897f4c88
4 changed files with 115 additions and 73 deletions
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@ -43,6 +43,7 @@ OBJS = hostapd.o ieee802_1x.o eapol_sm.o \
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sta_info.o wpa.o ctrl_iface.o \
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drivers.o preauth.o pmksa_cache.o \
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hw_features.o \
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tkip_countermeasures.o \
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mlme.o vlan_init.o wpa_auth_ie.o
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OBJS += ../src/utils/eloop.o
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@ -46,7 +46,7 @@
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#include "version.h"
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#include "l2_packet/l2_packet.h"
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#include "wps_hostapd.h"
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#include "mlme.h"
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#include "tkip_countermeasures.h"
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static int hostapd_radius_get_eap_user(void *ctx, const u8 *identity,
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@ -168,76 +168,6 @@ static void hostapd_logger_cb(void *ctx, const u8 *addr, unsigned int module,
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}
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static void ieee80211_tkip_countermeasures_stop(void *eloop_ctx,
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void *timeout_ctx)
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{
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struct hostapd_data *hapd = eloop_ctx;
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hapd->tkip_countermeasures = 0;
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hostapd_set_countermeasures(hapd, 0);
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hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
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HOSTAPD_LEVEL_INFO, "TKIP countermeasures ended");
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}
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static void ieee80211_tkip_countermeasures_start(struct hostapd_data *hapd)
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{
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struct sta_info *sta;
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hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
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HOSTAPD_LEVEL_INFO, "TKIP countermeasures initiated");
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wpa_auth_countermeasures_start(hapd->wpa_auth);
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hapd->tkip_countermeasures = 1;
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hostapd_set_countermeasures(hapd, 1);
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wpa_gtk_rekey(hapd->wpa_auth);
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eloop_cancel_timeout(ieee80211_tkip_countermeasures_stop, hapd, NULL);
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eloop_register_timeout(60, 0, ieee80211_tkip_countermeasures_stop,
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hapd, NULL);
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for (sta = hapd->sta_list; sta != NULL; sta = sta->next) {
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hostapd_sta_deauth(hapd, sta->addr,
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WLAN_REASON_MICHAEL_MIC_FAILURE);
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sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC |
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WLAN_STA_AUTHORIZED);
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hostapd_sta_remove(hapd, sta->addr);
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}
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}
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static void ieee80211_michael_mic_failure(struct hostapd_data *hapd,
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const u8 *addr, int local)
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{
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time_t now;
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if (addr && local) {
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struct sta_info *sta = ap_get_sta(hapd, addr);
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if (sta != NULL) {
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wpa_auth_sta_local_mic_failure_report(sta->wpa_sm);
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hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
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HOSTAPD_LEVEL_INFO,
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"Michael MIC failure detected in "
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"received frame");
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mlme_michaelmicfailure_indication(hapd, addr);
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} else {
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wpa_printf(MSG_DEBUG,
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"MLME-MICHAELMICFAILURE.indication "
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"for not associated STA (" MACSTR
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") ignored", MAC2STR(addr));
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return;
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}
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}
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time(&now);
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if (now > hapd->michael_mic_failure + 60) {
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hapd->michael_mic_failures = 1;
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} else {
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hapd->michael_mic_failures++;
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if (hapd->michael_mic_failures > 1)
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ieee80211_tkip_countermeasures_start(hapd);
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}
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hapd->michael_mic_failure = now;
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}
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/**
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* hostapd_prune_associations - Remove extraneous associations
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* @hapd: Pointer to BSS data for the most recent association
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@ -467,7 +397,7 @@ void hostapd_mgmt_tx_cb(struct hostapd_data *hapd, u8 *buf, size_t len,
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void hostapd_michael_mic_failure(struct hostapd_data *hapd, const u8 *addr)
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{
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ieee80211_michael_mic_failure(hapd, addr, 1);
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michael_mic_failure(hapd, addr, 1);
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}
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@ -1027,7 +957,7 @@ static void hostapd_wpa_auth_disconnect(void *ctx, const u8 *addr,
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static void hostapd_wpa_auth_mic_failure_report(void *ctx, const u8 *addr)
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{
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struct hostapd_data *hapd = ctx;
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ieee80211_michael_mic_failure(hapd, addr, 0);
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michael_mic_failure(hapd, addr, 0);
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}
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91
hostapd/tkip_countermeasures.c
Normal file
91
hostapd/tkip_countermeasures.c
Normal file
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@ -0,0 +1,91 @@
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/*
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* hostapd / TKIP countermeasures
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* Copyright (c) 2002-2009, 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 "hostapd.h"
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#include "eloop.h"
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#include "driver_i.h"
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#include "sta_info.h"
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#include "mlme.h"
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#include "wpa.h"
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static void ieee80211_tkip_countermeasures_stop(void *eloop_ctx,
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void *timeout_ctx)
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{
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struct hostapd_data *hapd = eloop_ctx;
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hapd->tkip_countermeasures = 0;
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hostapd_set_countermeasures(hapd, 0);
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hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
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HOSTAPD_LEVEL_INFO, "TKIP countermeasures ended");
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}
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static void ieee80211_tkip_countermeasures_start(struct hostapd_data *hapd)
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{
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struct sta_info *sta;
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hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
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HOSTAPD_LEVEL_INFO, "TKIP countermeasures initiated");
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wpa_auth_countermeasures_start(hapd->wpa_auth);
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hapd->tkip_countermeasures = 1;
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hostapd_set_countermeasures(hapd, 1);
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wpa_gtk_rekey(hapd->wpa_auth);
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eloop_cancel_timeout(ieee80211_tkip_countermeasures_stop, hapd, NULL);
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eloop_register_timeout(60, 0, ieee80211_tkip_countermeasures_stop,
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hapd, NULL);
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for (sta = hapd->sta_list; sta != NULL; sta = sta->next) {
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hostapd_sta_deauth(hapd, sta->addr,
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WLAN_REASON_MICHAEL_MIC_FAILURE);
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sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC |
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WLAN_STA_AUTHORIZED);
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hostapd_sta_remove(hapd, sta->addr);
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}
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}
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void michael_mic_failure(struct hostapd_data *hapd, const u8 *addr, int local)
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{
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time_t now;
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if (addr && local) {
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struct sta_info *sta = ap_get_sta(hapd, addr);
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if (sta != NULL) {
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wpa_auth_sta_local_mic_failure_report(sta->wpa_sm);
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hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
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HOSTAPD_LEVEL_INFO,
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"Michael MIC failure detected in "
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"received frame");
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mlme_michaelmicfailure_indication(hapd, addr);
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} else {
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wpa_printf(MSG_DEBUG,
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"MLME-MICHAELMICFAILURE.indication "
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"for not associated STA (" MACSTR
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") ignored", MAC2STR(addr));
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return;
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}
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}
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time(&now);
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if (now > hapd->michael_mic_failure + 60) {
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hapd->michael_mic_failures = 1;
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} else {
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hapd->michael_mic_failures++;
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if (hapd->michael_mic_failures > 1)
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ieee80211_tkip_countermeasures_start(hapd);
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}
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hapd->michael_mic_failure = now;
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}
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20
hostapd/tkip_countermeasures.h
Normal file
20
hostapd/tkip_countermeasures.h
Normal file
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@ -0,0 +1,20 @@
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/*
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* hostapd / TKIP countermeasures
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* Copyright (c) 2002-2009, 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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#ifndef TKIP_COUNTERMEASURES_H
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#define TKIP_COUNTERMEASURES_H
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void michael_mic_failure(struct hostapd_data *hapd, const u8 *addr, int local);
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#endif /* TKIP_COUNTERMEASURES_H */
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