Moved driver callback functions from hostapd.c to a new file

This commit is contained in:
Jouni Malinen 2009-01-09 17:27:03 +02:00 committed by Jouni Malinen
parent 81897f4c88
commit b5b969e9c7
4 changed files with 292 additions and 236 deletions

View file

@ -43,6 +43,7 @@ OBJS = hostapd.o ieee802_1x.o eapol_sm.o \
sta_info.o wpa.o ctrl_iface.o \
drivers.o preauth.o pmksa_cache.o \
hw_features.o \
drv_callbacks.o \
tkip_countermeasures.o \
mlme.o vlan_init.o wpa_auth_ie.o

272
hostapd/drv_callbacks.c Normal file
View file

@ -0,0 +1,272 @@
/*
* hostapd / Callback functions for driver wrappers
* Copyright (c) 2002-2009, 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 "hostapd.h"
#include "driver_i.h"
#include "ieee802_11.h"
#include "radius/radius.h"
#include "sta_info.h"
#include "accounting.h"
#include "tkip_countermeasures.h"
#include "ieee802_1x.h"
#include "wpa.h"
#include "iapp.h"
#include "wme.h"
struct prune_data {
struct hostapd_data *hapd;
const u8 *addr;
};
static int prune_associations(struct hostapd_iface *iface, void *ctx)
{
struct prune_data *data = ctx;
struct sta_info *osta;
struct hostapd_data *ohapd;
size_t j;
for (j = 0; j < iface->num_bss; j++) {
ohapd = iface->bss[j];
if (ohapd == data->hapd)
continue;
osta = ap_get_sta(ohapd, data->addr);
if (!osta)
continue;
ap_sta_disassociate(ohapd, osta, WLAN_REASON_UNSPECIFIED);
}
return 0;
}
/**
* hostapd_prune_associations - Remove extraneous associations
* @hapd: Pointer to BSS data for the most recent association
* @sta: Pointer to the associated STA data
*
* This function looks through all radios and BSS's for previous
* (stale) associations of STA. If any are found they are removed.
*/
static void hostapd_prune_associations(struct hostapd_data *hapd,
struct sta_info *sta)
{
struct prune_data data;
data.hapd = hapd;
data.addr = sta->addr;
hostapd_for_each_interface(prune_associations, &data);
}
/**
* hostapd_new_assoc_sta - Notify that a new station associated with the AP
* @hapd: Pointer to BSS data
* @sta: Pointer to the associated STA data
* @reassoc: 1 to indicate this was a re-association; 0 = first association
*
* This function will be called whenever a station associates with the AP. It
* can be called from ieee802_11.c for drivers that export MLME to hostapd and
* from driver_*.c for drivers that take care of management frames (IEEE 802.11
* authentication and association) internally.
*/
void hostapd_new_assoc_sta(struct hostapd_data *hapd, struct sta_info *sta,
int reassoc)
{
if (hapd->tkip_countermeasures) {
hostapd_sta_deauth(hapd, sta->addr,
WLAN_REASON_MICHAEL_MIC_FAILURE);
return;
}
hostapd_prune_associations(hapd, sta);
/* IEEE 802.11F (IAPP) */
if (hapd->conf->ieee802_11f)
iapp_new_station(hapd->iapp, sta);
/* Start accounting here, if IEEE 802.1X and WPA are not used.
* IEEE 802.1X/WPA code will start accounting after the station has
* been authorized. */
if (!hapd->conf->ieee802_1x && !hapd->conf->wpa)
accounting_sta_start(hapd, sta);
hostapd_wme_sta_config(hapd, sta);
/* Start IEEE 802.1X authentication process for new stations */
ieee802_1x_new_station(hapd, sta);
if (reassoc) {
if (sta->auth_alg != WLAN_AUTH_FT &&
!(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)))
wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH);
} else
wpa_auth_sta_associated(hapd->wpa_auth, sta->wpa_sm);
}
void hostapd_tx_status(struct hostapd_data *hapd, const u8 *addr,
const u8 *buf, size_t len, int ack)
{
struct sta_info *sta;
sta = ap_get_sta(hapd, addr);
if (sta && sta->flags & WLAN_STA_PENDING_POLL) {
wpa_printf(MSG_DEBUG, "STA " MACSTR " %s pending "
"activity poll", MAC2STR(sta->addr),
ack ? "ACKed" : "did not ACK");
if (ack)
sta->flags &= ~WLAN_STA_PENDING_POLL;
}
if (sta)
ieee802_1x_tx_status(hapd, sta, buf, len, ack);
}
void hostapd_rx_from_unknown_sta(struct hostapd_data *hapd, const u8 *addr)
{
struct sta_info *sta;
sta = ap_get_sta(hapd, addr);
if (!sta || !(sta->flags & WLAN_STA_ASSOC)) {
wpa_printf(MSG_DEBUG, "Data/PS-poll frame from not associated "
"STA " MACSTR, MAC2STR(addr));
if (sta && (sta->flags & WLAN_STA_AUTH))
hostapd_sta_disassoc(
hapd, addr,
WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
else
hostapd_sta_deauth(
hapd, addr,
WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
}
}
int hostapd_notif_assoc(struct hostapd_data *hapd, const u8 *addr,
const u8 *ie, size_t ielen)
{
struct sta_info *sta;
int new_assoc, res;
hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
HOSTAPD_LEVEL_INFO, "associated");
sta = ap_get_sta(hapd, addr);
if (sta) {
accounting_sta_stop(hapd, sta);
} else {
sta = ap_sta_add(hapd, addr);
if (sta == NULL)
return -1;
}
sta->flags &= ~(WLAN_STA_WPS | WLAN_STA_MAYBE_WPS);
if (hapd->conf->wpa) {
if (ie == NULL || ielen == 0) {
if (hapd->conf->wps_state) {
wpa_printf(MSG_DEBUG, "STA did not include "
"WPA/RSN IE in (Re)Association "
"Request - possible WPS use");
sta->flags |= WLAN_STA_MAYBE_WPS;
goto skip_wpa_check;
}
wpa_printf(MSG_DEBUG, "No WPA/RSN IE from STA");
return -1;
}
if (hapd->conf->wps_state && ie[0] == 0xdd && ie[1] >= 4 &&
os_memcmp(ie + 2, "\x00\x50\xf2\x04", 4) == 0) {
sta->flags |= WLAN_STA_WPS;
goto skip_wpa_check;
}
if (sta->wpa_sm == NULL)
sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
sta->addr);
if (sta->wpa_sm == NULL) {
wpa_printf(MSG_ERROR, "Failed to initialize WPA state "
"machine");
return -1;
}
res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
ie, ielen, NULL, 0);
if (res != WPA_IE_OK) {
wpa_printf(MSG_DEBUG, "WPA/RSN information element "
"rejected? (res %u)", res);
wpa_hexdump(MSG_DEBUG, "IE", ie, ielen);
return -1;
}
}
skip_wpa_check:
new_assoc = (sta->flags & WLAN_STA_ASSOC) == 0;
sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC;
wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC);
hostapd_new_assoc_sta(hapd, sta, !new_assoc);
ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
return 0;
}
void hostapd_notif_disassoc(struct hostapd_data *hapd, const u8 *addr)
{
struct sta_info *sta;
hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
HOSTAPD_LEVEL_INFO, "disassociated");
sta = ap_get_sta(hapd, addr);
if (sta == NULL) {
wpa_printf(MSG_DEBUG, "Disassociation notification for "
"unknown STA " MACSTR, MAC2STR(addr));
return;
}
sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
ap_free_sta(hapd, sta);
}
void hostapd_eapol_receive(struct hostapd_data *hapd, const u8 *sa,
const u8 *buf, size_t len)
{
ieee802_1x_receive(hapd, sa, buf, len);
}
void hostapd_mgmt_rx(struct hostapd_data *hapd, u8 *buf, size_t len,
u16 stype, struct hostapd_frame_info *fi)
{
ieee802_11_mgmt(hapd, buf, len, stype, fi);
}
void hostapd_mgmt_tx_cb(struct hostapd_data *hapd, u8 *buf, size_t len,
u16 stype, int ok)
{
ieee802_11_mgmt_cb(hapd, buf, len, stype, ok);
}
void hostapd_michael_mic_failure(struct hostapd_data *hapd, const u8 *addr)
{
michael_mic_failure(hapd, addr, 1);
}

View file

@ -20,7 +20,6 @@
#include "eloop.h"
#include "hostapd.h"
#include "ieee802_1x.h"
#include "ieee802_11.h"
#include "beacon.h"
#include "hw_features.h"
#include "accounting.h"
@ -33,10 +32,8 @@
#include "driver_i.h"
#include "radius/radius_client.h"
#include "radius/radius_server.h"
#include "radius/radius.h"
#include "wpa.h"
#include "preauth.h"
#include "wme.h"
#include "vlan_init.h"
#include "ctrl_iface.h"
#include "tls.h"
@ -67,6 +64,23 @@ extern int wpa_debug_show_keys;
extern int wpa_debug_timestamp;
int hostapd_for_each_interface(int (*cb)(struct hostapd_iface *iface,
void *ctx), void *ctx)
{
struct hapd_interfaces *interfaces = eloop_get_user_data();
size_t i;
int ret;
for (i = 0; i < interfaces->count; i++) {
ret = cb(interfaces->iface[i], ctx);
if (ret)
return ret;
}
return 0;
}
static void hostapd_logger_cb(void *ctx, const u8 *addr, unsigned int module,
int level, const char *txt, size_t len)
{
@ -168,239 +182,6 @@ static void hostapd_logger_cb(void *ctx, const u8 *addr, unsigned int module,
}
/**
* hostapd_prune_associations - Remove extraneous associations
* @hapd: Pointer to BSS data for the most recent association
* @sta: Pointer to the associated STA data
*
* This function looks through all radios and BSS's for previous
* (stale) associations of STA. If any are found they are removed.
*/
static void hostapd_prune_associations(struct hostapd_data *hapd,
struct sta_info *sta)
{
struct sta_info *osta;
struct hostapd_data *ohapd;
size_t i, j;
struct hapd_interfaces *interfaces = eloop_get_user_data();
for (i = 0; i < interfaces->count; i++) {
for (j = 0; j < interfaces->iface[i]->num_bss; j++) {
ohapd = interfaces->iface[i]->bss[j];
if (ohapd == hapd)
continue;
osta = ap_get_sta(ohapd, sta->addr);
if (!osta)
continue;
ap_sta_disassociate(ohapd, osta,
WLAN_REASON_UNSPECIFIED);
}
}
}
/**
* hostapd_new_assoc_sta - Notify that a new station associated with the AP
* @hapd: Pointer to BSS data
* @sta: Pointer to the associated STA data
* @reassoc: 1 to indicate this was a re-association; 0 = first association
*
* This function will be called whenever a station associates with the AP. It
* can be called for ieee802_11.c for drivers that export MLME to hostapd and
* from driver_*.c for drivers that take care of management frames (IEEE 802.11
* authentication and association) internally.
*/
void hostapd_new_assoc_sta(struct hostapd_data *hapd, struct sta_info *sta,
int reassoc)
{
if (hapd->tkip_countermeasures) {
hostapd_sta_deauth(hapd, sta->addr,
WLAN_REASON_MICHAEL_MIC_FAILURE);
return;
}
hostapd_prune_associations(hapd, sta);
/* IEEE 802.11F (IAPP) */
if (hapd->conf->ieee802_11f)
iapp_new_station(hapd->iapp, sta);
/* Start accounting here, if IEEE 802.1X and WPA are not used.
* IEEE 802.1X/WPA code will start accounting after the station has
* been authorized. */
if (!hapd->conf->ieee802_1x && !hapd->conf->wpa)
accounting_sta_start(hapd, sta);
hostapd_wme_sta_config(hapd, sta);
/* Start IEEE 802.1X authentication process for new stations */
ieee802_1x_new_station(hapd, sta);
if (reassoc) {
if (sta->auth_alg != WLAN_AUTH_FT &&
!(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)))
wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH);
} else
wpa_auth_sta_associated(hapd->wpa_auth, sta->wpa_sm);
}
void hostapd_tx_status(struct hostapd_data *hapd, const u8 *addr,
const u8 *buf, size_t len, int ack)
{
struct sta_info *sta;
sta = ap_get_sta(hapd, addr);
if (sta && sta->flags & WLAN_STA_PENDING_POLL) {
wpa_printf(MSG_DEBUG, "STA " MACSTR " %s pending "
"activity poll", MAC2STR(sta->addr),
ack ? "ACKed" : "did not ACK");
if (ack)
sta->flags &= ~WLAN_STA_PENDING_POLL;
}
if (sta)
ieee802_1x_tx_status(hapd, sta, buf, len, ack);
}
void hostapd_rx_from_unknown_sta(struct hostapd_data *hapd, const u8 *addr)
{
struct sta_info *sta;
sta = ap_get_sta(hapd, addr);
if (!sta || !(sta->flags & WLAN_STA_ASSOC)) {
wpa_printf(MSG_DEBUG, "Data/PS-poll frame from not associated "
"STA " MACSTR, MAC2STR(addr));
if (sta && (sta->flags & WLAN_STA_AUTH))
hostapd_sta_disassoc(
hapd, addr,
WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
else
hostapd_sta_deauth(
hapd, addr,
WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
}
}
int hostapd_notif_assoc(struct hostapd_data *hapd, const u8 *addr,
const u8 *ie, size_t ielen)
{
struct sta_info *sta;
int new_assoc, res;
hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
HOSTAPD_LEVEL_INFO, "associated");
sta = ap_get_sta(hapd, addr);
if (sta) {
accounting_sta_stop(hapd, sta);
} else {
sta = ap_sta_add(hapd, addr);
if (sta == NULL)
return -1;
}
sta->flags &= ~(WLAN_STA_WPS | WLAN_STA_MAYBE_WPS);
if (hapd->conf->wpa) {
if (ie == NULL || ielen == 0) {
if (hapd->conf->wps_state) {
wpa_printf(MSG_DEBUG, "STA did not include "
"WPA/RSN IE in (Re)Association "
"Request - possible WPS use");
sta->flags |= WLAN_STA_MAYBE_WPS;
goto skip_wpa_check;
}
wpa_printf(MSG_DEBUG, "No WPA/RSN IE from STA");
return -1;
}
if (hapd->conf->wps_state && ie[0] == 0xdd && ie[1] >= 4 &&
os_memcmp(ie + 2, "\x00\x50\xf2\x04", 4) == 0) {
sta->flags |= WLAN_STA_WPS;
goto skip_wpa_check;
}
if (sta->wpa_sm == NULL)
sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
sta->addr);
if (sta->wpa_sm == NULL) {
wpa_printf(MSG_ERROR, "Failed to initialize WPA state "
"machine");
return -1;
}
res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
ie, ielen, NULL, 0);
if (res != WPA_IE_OK) {
wpa_printf(MSG_DEBUG, "WPA/RSN information element "
"rejected? (res %u)", res);
wpa_hexdump(MSG_DEBUG, "IE", ie, ielen);
return -1;
}
}
skip_wpa_check:
new_assoc = (sta->flags & WLAN_STA_ASSOC) == 0;
sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC;
wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC);
hostapd_new_assoc_sta(hapd, sta, !new_assoc);
ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
return 0;
}
void hostapd_notif_disassoc(struct hostapd_data *hapd, const u8 *addr)
{
struct sta_info *sta;
hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
HOSTAPD_LEVEL_INFO, "disassociated");
sta = ap_get_sta(hapd, addr);
if (sta == NULL) {
wpa_printf(MSG_DEBUG, "Disassociation notification for "
"unknown STA " MACSTR, MAC2STR(addr));
return;
}
sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
ap_free_sta(hapd, sta);
}
void hostapd_eapol_receive(struct hostapd_data *hapd, const u8 *sa,
const u8 *buf, size_t len)
{
ieee802_1x_receive(hapd, sa, buf, len);
}
void hostapd_mgmt_rx(struct hostapd_data *hapd, u8 *buf, size_t len,
u16 stype, struct hostapd_frame_info *fi)
{
ieee802_11_mgmt(hapd, buf, len, stype, fi);
}
void hostapd_mgmt_tx_cb(struct hostapd_data *hapd, u8 *buf, size_t len,
u16 stype, int ok)
{
ieee802_11_mgmt_cb(hapd, buf, len, stype, ok);
}
void hostapd_michael_mic_failure(struct hostapd_data *hapd, const u8 *addr)
{
michael_mic_failure(hapd, addr, 1);
}
#ifdef EAP_SERVER
static int hostapd_sim_db_cb_sta(struct hostapd_data *hapd,
struct sta_info *sta, void *ctx)

View file

@ -154,5 +154,7 @@ struct hostapd_iface {
};
int hostapd_reload_config(struct hostapd_iface *iface);
int hostapd_for_each_interface(int (*cb)(struct hostapd_iface *iface,
void *ctx), void *ctx);
#endif /* HOSTAPD_H */