Moved driver callback functions from hostapd.c to a new file
Jouni Malinen
16 years ago
committed by
Jouni Malinen
parent
81897f4c88
commit
b5b969e9c7
@ -0,0 +1,272 @@
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/*
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* hostapd / Callback functions for driver wrappers
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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 "driver_i.h"
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#include "ieee802_11.h"
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#include "radius/radius.h"
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#include "sta_info.h"
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#include "accounting.h"
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#include "tkip_countermeasures.h"
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#include "ieee802_1x.h"
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#include "wpa.h"
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#include "iapp.h"
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#include "wme.h"
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struct prune_data {
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struct hostapd_data *hapd;
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const u8 *addr;
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};
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static int prune_associations(struct hostapd_iface *iface, void *ctx)
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{
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struct prune_data *data = ctx;
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struct sta_info *osta;
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struct hostapd_data *ohapd;
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size_t j;
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for (j = 0; j < iface->num_bss; j++) {
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ohapd = iface->bss[j];
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if (ohapd == data->hapd)
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continue;
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osta = ap_get_sta(ohapd, data->addr);
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if (!osta)
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continue;
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ap_sta_disassociate(ohapd, osta, WLAN_REASON_UNSPECIFIED);
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}
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return 0;
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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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* @sta: Pointer to the associated STA data
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*
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* This function looks through all radios and BSS's for previous
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* (stale) associations of STA. If any are found they are removed.
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*/
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static void hostapd_prune_associations(struct hostapd_data *hapd,
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struct sta_info *sta)
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{
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struct prune_data data;
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data.hapd = hapd;
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data.addr = sta->addr;
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hostapd_for_each_interface(prune_associations, &data);
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}
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/**
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* hostapd_new_assoc_sta - Notify that a new station associated with the AP
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* @hapd: Pointer to BSS data
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* @sta: Pointer to the associated STA data
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* @reassoc: 1 to indicate this was a re-association; 0 = first association
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*
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* This function will be called whenever a station associates with the AP. It
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* can be called from ieee802_11.c for drivers that export MLME to hostapd and
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* from driver_*.c for drivers that take care of management frames (IEEE 802.11
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* authentication and association) internally.
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*/
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void hostapd_new_assoc_sta(struct hostapd_data *hapd, struct sta_info *sta,
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int reassoc)
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{
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if (hapd->tkip_countermeasures) {
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hostapd_sta_deauth(hapd, sta->addr,
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WLAN_REASON_MICHAEL_MIC_FAILURE);
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return;
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}
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hostapd_prune_associations(hapd, sta);
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/* IEEE 802.11F (IAPP) */
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if (hapd->conf->ieee802_11f)
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iapp_new_station(hapd->iapp, sta);
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/* Start accounting here, if IEEE 802.1X and WPA are not used.
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* IEEE 802.1X/WPA code will start accounting after the station has
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* been authorized. */
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if (!hapd->conf->ieee802_1x && !hapd->conf->wpa)
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accounting_sta_start(hapd, sta);
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hostapd_wme_sta_config(hapd, sta);
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/* Start IEEE 802.1X authentication process for new stations */
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ieee802_1x_new_station(hapd, sta);
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if (reassoc) {
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if (sta->auth_alg != WLAN_AUTH_FT &&
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!(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)))
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wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH);
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} else
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wpa_auth_sta_associated(hapd->wpa_auth, sta->wpa_sm);
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}
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void hostapd_tx_status(struct hostapd_data *hapd, const u8 *addr,
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const u8 *buf, size_t len, int ack)
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{
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struct sta_info *sta;
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sta = ap_get_sta(hapd, addr);
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if (sta && sta->flags & WLAN_STA_PENDING_POLL) {
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wpa_printf(MSG_DEBUG, "STA " MACSTR " %s pending "
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"activity poll", MAC2STR(sta->addr),
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ack ? "ACKed" : "did not ACK");
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if (ack)
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sta->flags &= ~WLAN_STA_PENDING_POLL;
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}
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if (sta)
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ieee802_1x_tx_status(hapd, sta, buf, len, ack);
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}
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void hostapd_rx_from_unknown_sta(struct hostapd_data *hapd, const u8 *addr)
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{
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struct sta_info *sta;
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sta = ap_get_sta(hapd, addr);
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if (!sta || !(sta->flags & WLAN_STA_ASSOC)) {
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wpa_printf(MSG_DEBUG, "Data/PS-poll frame from not associated "
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"STA " MACSTR, MAC2STR(addr));
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if (sta && (sta->flags & WLAN_STA_AUTH))
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hostapd_sta_disassoc(
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hapd, addr,
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WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
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else
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hostapd_sta_deauth(
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hapd, addr,
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WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
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}
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}
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int hostapd_notif_assoc(struct hostapd_data *hapd, const u8 *addr,
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const u8 *ie, size_t ielen)
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{
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struct sta_info *sta;
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int new_assoc, res;
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hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
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HOSTAPD_LEVEL_INFO, "associated");
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sta = ap_get_sta(hapd, addr);
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if (sta) {
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accounting_sta_stop(hapd, sta);
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} else {
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sta = ap_sta_add(hapd, addr);
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if (sta == NULL)
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return -1;
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}
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sta->flags &= ~(WLAN_STA_WPS | WLAN_STA_MAYBE_WPS);
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if (hapd->conf->wpa) {
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if (ie == NULL || ielen == 0) {
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if (hapd->conf->wps_state) {
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wpa_printf(MSG_DEBUG, "STA did not include "
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"WPA/RSN IE in (Re)Association "
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"Request - possible WPS use");
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sta->flags |= WLAN_STA_MAYBE_WPS;
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goto skip_wpa_check;
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}
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wpa_printf(MSG_DEBUG, "No WPA/RSN IE from STA");
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return -1;
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}
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if (hapd->conf->wps_state && ie[0] == 0xdd && ie[1] >= 4 &&
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os_memcmp(ie + 2, "\x00\x50\xf2\x04", 4) == 0) {
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sta->flags |= WLAN_STA_WPS;
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goto skip_wpa_check;
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}
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if (sta->wpa_sm == NULL)
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sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
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sta->addr);
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if (sta->wpa_sm == NULL) {
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wpa_printf(MSG_ERROR, "Failed to initialize WPA state "
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"machine");
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return -1;
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}
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res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
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ie, ielen, NULL, 0);
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if (res != WPA_IE_OK) {
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wpa_printf(MSG_DEBUG, "WPA/RSN information element "
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"rejected? (res %u)", res);
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wpa_hexdump(MSG_DEBUG, "IE", ie, ielen);
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return -1;
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}
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}
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skip_wpa_check:
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new_assoc = (sta->flags & WLAN_STA_ASSOC) == 0;
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sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC;
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wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC);
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hostapd_new_assoc_sta(hapd, sta, !new_assoc);
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ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
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return 0;
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}
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void hostapd_notif_disassoc(struct hostapd_data *hapd, const u8 *addr)
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{
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struct sta_info *sta;
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hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
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HOSTAPD_LEVEL_INFO, "disassociated");
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sta = ap_get_sta(hapd, addr);
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if (sta == NULL) {
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wpa_printf(MSG_DEBUG, "Disassociation notification for "
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"unknown STA " MACSTR, MAC2STR(addr));
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return;
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}
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sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
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wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
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sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
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ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
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ap_free_sta(hapd, sta);
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}
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void hostapd_eapol_receive(struct hostapd_data *hapd, const u8 *sa,
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const u8 *buf, size_t len)
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{
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ieee802_1x_receive(hapd, sa, buf, len);
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}
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void hostapd_mgmt_rx(struct hostapd_data *hapd, u8 *buf, size_t len,
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u16 stype, struct hostapd_frame_info *fi)
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{
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ieee802_11_mgmt(hapd, buf, len, stype, fi);
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}
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void hostapd_mgmt_tx_cb(struct hostapd_data *hapd, u8 *buf, size_t len,
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u16 stype, int ok)
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{
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ieee802_11_mgmt_cb(hapd, buf, len, stype, ok);
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}
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void hostapd_michael_mic_failure(struct hostapd_data *hapd, const u8 *addr)
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{
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michael_mic_failure(hapd, addr, 1);
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}
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