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NetBSD/usr.sbin/wpa/hostapd/driver_netbsd.c

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/*
* Host AP - driver interaction with BSD net80211 layer
* Copyright (c) 2004, Sam Leffler <sam@errno.com>
* Copyright (c) 2004, 2Wire, Inc
*
* 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.
*/
/* Based on:
* $FreeBSD: src/usr.sbin/wpa/hostapd/driver_freebsd.c,v 1.3 2006/03/07 05:54:19 sam Exp $
*/
#include <err.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <sys/ioctl.h>
#include <errno.h>
#include <sys/socket.h>
#include <net/if.h>
#include <netinet/in.h>
#include <net80211/ieee80211.h>
#include <net80211/ieee80211_crypto.h>
#include <net80211/ieee80211_ioctl.h>
#include "hostapd.h"
#include "driver.h"
#include "ieee802_1x.h"
#include "eloop.h"
#include "sta_info.h"
#include "l2_packet.h"
#include "eapol_sm.h"
#include "wpa.h"
#include "radius.h"
#include "ieee802_11.h"
#include "common.h"
#include "hostap_common.h"
struct bsd_driver_data {
struct driver_ops ops; /* base class */
struct hostapd_data *hapd; /* back pointer */
char iface[IFNAMSIZ + 1];
struct l2_packet_data *sock_xmit; /* raw packet xmit socket */
int ioctl_sock; /* socket for ioctl() use */
int wext_sock; /* socket for wireless events */
};
static const struct driver_ops bsd_driver_ops;
static int bsd_sta_deauth(void *priv, u8 *addr, int reason_code);
static int
set80211var(struct bsd_driver_data *drv, int op, const void *arg, int arg_len)
{
struct ieee80211req ireq;
memset(&ireq, 0, sizeof(ireq));
strncpy(ireq.i_name, drv->iface, IFNAMSIZ);
ireq.i_type = op;
ireq.i_len = arg_len;
ireq.i_data = (void *) arg;
if (ioctl(drv->ioctl_sock, SIOCS80211, &ireq) < 0) {
warn("ioctl[SIOCS80211, op %d, len %d]", op, arg_len);
return -1;
}
return 0;
}
static int
get80211var(struct bsd_driver_data *drv, int op, void *arg, int arg_len)
{
struct ieee80211req ireq;
memset(&ireq, 0, sizeof(ireq));
strncpy(ireq.i_name, drv->iface, IFNAMSIZ);
ireq.i_type = op;
ireq.i_len = arg_len;
ireq.i_data = arg;
if (ioctl(drv->ioctl_sock, SIOCG80211, &ireq) < 0) {
perror("ioctl[SIOCG80211]");
return -1;
}
return ireq.i_len;
}
static int
set80211param(struct bsd_driver_data *drv, int op, int arg)
{
struct ieee80211req ireq;
memset(&ireq, 0, sizeof(ireq));
strncpy(ireq.i_name, drv->iface, IFNAMSIZ);
ireq.i_type = op;
ireq.i_val = arg;
if (ioctl(drv->ioctl_sock, SIOCS80211, &ireq) < 0) {
warn("ioctl[SIOCS80211, op %d, arg %d]", op, arg);
return -1;
}
return 0;
}
static const char *
ether_sprintf(const u8 *addr)
{
static char buf[sizeof(MACSTR)];
if (addr != NULL)
snprintf(buf, sizeof(buf), MACSTR, MAC2STR(addr));
else
snprintf(buf, sizeof(buf), MACSTR, 0,0,0,0,0,0);
return buf;
}
/*
* Configure WPA parameters.
*/
static int
bsd_configure_wpa(struct bsd_driver_data *drv)
{
static const char *ciphernames[] =
{ "WEP", "TKIP", "AES-OCB", "AES-CCM", "*BAD*", "CKIP", "NONE" };
hostapd *hapd = drv->hapd;
struct hostapd_config *conf = hapd->conf;
int v;
switch (conf->wpa_group) {
case WPA_CIPHER_CCMP:
v = IEEE80211_CIPHER_AES_CCM;
break;
case WPA_CIPHER_TKIP:
v = IEEE80211_CIPHER_TKIP;
break;
case WPA_CIPHER_WEP104:
v = IEEE80211_CIPHER_WEP;
break;
case WPA_CIPHER_WEP40:
v = IEEE80211_CIPHER_WEP;
break;
case WPA_CIPHER_NONE:
v = IEEE80211_CIPHER_NONE;
break;
default:
printf("Unknown group key cipher %u\n",
conf->wpa_group);
return -1;
}
HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
"%s: group key cipher=%s (%u)\n", __func__, ciphernames[v], v);
if (set80211param(drv, IEEE80211_IOC_MCASTCIPHER, v)) {
printf("Unable to set group key cipher to %u (%s)\n",
v, ciphernames[v]);
return -1;
}
if (v == IEEE80211_CIPHER_WEP) {
/* key length is done only for specific ciphers */
v = (conf->wpa_group == WPA_CIPHER_WEP104 ? 13 : 5);
if (set80211param(drv, IEEE80211_IOC_MCASTKEYLEN, v)) {
printf("Unable to set group key length to %u\n", v);
return -1;
}
}
v = 0;
if (conf->wpa_pairwise & WPA_CIPHER_CCMP)
v |= 1<<IEEE80211_CIPHER_AES_CCM;
if (conf->wpa_pairwise & WPA_CIPHER_TKIP)
v |= 1<<IEEE80211_CIPHER_TKIP;
if (conf->wpa_pairwise & WPA_CIPHER_NONE)
v |= 1<<IEEE80211_CIPHER_NONE;
HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
"%s: pairwise key ciphers=0x%x\n", __func__, v);
if (set80211param(drv, IEEE80211_IOC_UCASTCIPHERS, v)) {
printf("Unable to set pairwise key ciphers to 0x%x\n", v);
return -1;
}
HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
"%s: key management algorithms=0x%x\n",
__func__, conf->wpa_key_mgmt);
if (set80211param(drv, IEEE80211_IOC_KEYMGTALGS, conf->wpa_key_mgmt)) {
printf("Unable to set key management algorithms to 0x%x\n",
conf->wpa_key_mgmt);
return -1;
}
v = 0;
if (conf->rsn_preauth)
v |= BIT(0);
HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
"%s: rsn capabilities=0x%x\n", __func__, conf->rsn_preauth);
if (set80211param(drv, IEEE80211_IOC_RSNCAPS, v)) {
printf("Unable to set RSN capabilities to 0x%x\n", v);
return -1;
}
HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
"%s: enable WPA= 0x%x\n", __func__, conf->wpa);
if (set80211param(drv, IEEE80211_IOC_WPA, conf->wpa)) {
printf("Unable to set WPA to %u\n", conf->wpa);
return -1;
}
return 0;
}
static int
bsd_set_iface_flags(void *priv, int dev_up)
{
struct bsd_driver_data *drv = priv;
hostapd *hapd = drv->hapd;
struct ifreq ifr;
HOSTAPD_DEBUG(HOSTAPD_DEBUG_VERBOSE,
"%s: dev_up=%d\n", __func__, dev_up);
if (drv->ioctl_sock < 0)
return -1;
memset(&ifr, 0, sizeof(ifr));
snprintf(ifr.ifr_name, IFNAMSIZ, "%s", drv->iface);
if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
perror("ioctl[SIOCGIFFLAGS]");
return -1;
}
if (dev_up)
ifr.ifr_flags |= IFF_UP;
else
ifr.ifr_flags &= ~IFF_UP;
if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
perror("ioctl[SIOCSIFFLAGS]");
return -1;
}
if (dev_up) {
memset(&ifr, 0, sizeof(ifr));
snprintf(ifr.ifr_name, IFNAMSIZ, "%s", drv->iface);
ifr.ifr_mtu = HOSTAPD_MTU;
if (ioctl(drv->ioctl_sock, SIOCSIFMTU, &ifr) != 0) {
perror("ioctl[SIOCSIFMTU]");
printf("Setting MTU failed - trying to survive with "
"current value\n");
}
}
return 0;
}
static int
bsd_set_ieee8021x(void *priv, int enabled)
{
struct bsd_driver_data *drv = priv;
hostapd *hapd = drv->hapd;
struct hostapd_config *conf = hapd->conf;
HOSTAPD_DEBUG(HOSTAPD_DEBUG_VERBOSE,
"%s: enabled=%d\n", __func__, enabled);
if (!enabled) {
/* XXX restore state */
return set80211param(priv, IEEE80211_IOC_AUTHMODE,
IEEE80211_AUTH_AUTO);
}
if (!conf->wpa && !conf->ieee802_1x) {
hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
HOSTAPD_LEVEL_WARNING, "No 802.1X or WPA enabled!");
return -1;
}
if (conf->wpa && bsd_configure_wpa(drv) != 0) {
hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
HOSTAPD_LEVEL_WARNING, "Error configuring WPA state!");
return -1;
}
if (set80211param(priv, IEEE80211_IOC_AUTHMODE,
(conf->wpa ? IEEE80211_AUTH_WPA : IEEE80211_AUTH_8021X))) {
hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
HOSTAPD_LEVEL_WARNING, "Error enabling WPA/802.1X!");
return -1;
}
return bsd_set_iface_flags(priv, 1);
}
static int
bsd_set_privacy(void *priv, int enabled)
{
struct bsd_driver_data *drv = priv;
hostapd *hapd = drv->hapd;
HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
"%s: enabled=%d\n", __func__, enabled);
return set80211param(priv, IEEE80211_IOC_PRIVACY, enabled);
}
static int
bsd_set_sta_authorized(void *priv, u8 *addr, int authorized)
{
struct bsd_driver_data *drv = priv;
hostapd *hapd = drv->hapd;
struct ieee80211req_mlme mlme;
HOSTAPD_DEBUG(HOSTAPD_DEBUG_VERBOSE,
"%s: addr=%s authorized=%d\n",
__func__, ether_sprintf(addr), authorized);
if (authorized)
mlme.im_op = IEEE80211_MLME_AUTHORIZE;
else
mlme.im_op = IEEE80211_MLME_UNAUTHORIZE;
mlme.im_reason = 0;
memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
return set80211var(priv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
}
static int
bsd_del_key(void *priv, unsigned char *addr, int key_idx)
{
struct bsd_driver_data *drv = priv;
hostapd *hapd = drv->hapd;
struct ieee80211req_del_key wk;
HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
"%s: addr=%s key_idx=%d\n",
__func__, ether_sprintf(addr), key_idx);
memset(&wk, 0, sizeof(wk));
if (addr != NULL) {
memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
wk.idk_keyix = (u_int8_t) IEEE80211_KEYIX_NONE; /* XXX */
} else {
wk.idk_keyix = key_idx;
}
return set80211var(priv, IEEE80211_IOC_DELKEY, &wk, sizeof(wk));
}
static int
bsd_set_key(void *priv, const char *alg,
unsigned char *addr, int key_idx,
u8 *key, size_t key_len)
{
struct bsd_driver_data *drv = priv;
hostapd *hapd = drv->hapd;
struct ieee80211req_key wk;
u_int8_t cipher;
if (strcmp(alg, "none") == 0)
return bsd_del_key(priv, addr, key_idx);
HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
"%s: alg=%s addr=%s key_idx=%d\n",
__func__, alg, ether_sprintf(addr), key_idx);
if (strcmp(alg, "WEP") == 0)
cipher = IEEE80211_CIPHER_WEP;
else if (strcmp(alg, "TKIP") == 0)
cipher = IEEE80211_CIPHER_TKIP;
else if (strcmp(alg, "CCMP") == 0)
cipher = IEEE80211_CIPHER_AES_CCM;
else {
printf("%s: unknown/unsupported algorithm %s\n",
__func__, alg);
return -1;
}
if (key_len > sizeof(wk.ik_keydata)) {
printf("%s: key length %d too big\n", __func__, key_len);
return -3;
}
memset(&wk, 0, sizeof(wk));
wk.ik_type = cipher;
wk.ik_flags = IEEE80211_KEY_RECV | IEEE80211_KEY_XMIT;
if (addr == NULL) {
memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
wk.ik_keyix = key_idx;
wk.ik_flags |= IEEE80211_KEY_DEFAULT | IEEE80211_KEY_GROUP;
} else {
memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
wk.ik_keyix = IEEE80211_KEYIX_NONE;
}
wk.ik_keylen = key_len;
memcpy(wk.ik_keydata, key, key_len);
return set80211var(priv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk));
}
static int
bsd_get_seqnum(void *priv, u8 *addr, int idx, u8 *seq)
{
struct bsd_driver_data *drv = priv;
hostapd *hapd = drv->hapd;
struct ieee80211req_key wk;
HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
"%s: addr=%s idx=%d\n", __func__, ether_sprintf(addr), idx);
memset(&wk, 0, sizeof(wk));
if (addr == NULL)
memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
else
memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
wk.ik_keyix = idx;
if (get80211var(drv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk)) < 0) {
printf("Failed to get encryption.\n");
return -1;
} else {
/* NB: upper layer expects tsc in network order */
wk.ik_keytsc = htole64(wk.ik_keytsc);
memcpy(seq, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
return 0;
}
}
static int
bsd_flush(void *priv)
{
u8 allsta[IEEE80211_ADDR_LEN];
memset(allsta, 0xff, IEEE80211_ADDR_LEN);
return bsd_sta_deauth(priv, allsta, IEEE80211_REASON_AUTH_LEAVE);
}
static int
bsd_read_sta_driver_data(void *priv, struct hostap_sta_driver_data *data,
u8 *addr)
{
struct bsd_driver_data *drv = priv;
struct ieee80211req_sta_stats stats;
memcpy(stats.is_u.macaddr, addr, IEEE80211_ADDR_LEN);
if (get80211var(drv, IEEE80211_IOC_STA_STATS, &stats, sizeof(stats)) > 0) {
/* XXX? do packets counts include non-data frames? */
data->rx_packets = stats.is_stats.ns_rx_data;
data->rx_bytes = stats.is_stats.ns_rx_bytes;
data->tx_packets = stats.is_stats.ns_tx_data;
data->tx_bytes = stats.is_stats.ns_tx_bytes;
}
return 0;
}
static int
bsd_sta_clear_stats(void *priv, u8 *addr)
{
struct bsd_driver_data *drv = priv;
hostapd *hapd = drv->hapd;
struct ieee80211req_sta_stats stats;
HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL, "%s: addr=%s\n",
__func__, ether_sprintf(addr));
/* zero station statistics */
memset(&stats, 0, sizeof(stats));
memcpy(stats.is_u.macaddr, addr, IEEE80211_ADDR_LEN);
return set80211var(drv, IEEE80211_IOC_STA_STATS, &stats, sizeof(stats));
}
static int
bsd_set_opt_ie(void *priv, const u8 *ie, size_t ie_len)
{
/*
* Do nothing; we setup parameters at startup that define the
* contents of the beacon information element.
*/
return 0;
}
static int
bsd_sta_deauth(void *priv, u8 *addr, int reason_code)
{
struct bsd_driver_data *drv = priv;
hostapd *hapd = drv->hapd;
struct ieee80211req_mlme mlme;
HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
"%s: addr=%s reason_code=%d\n",
__func__, ether_sprintf(addr), reason_code);
mlme.im_op = IEEE80211_MLME_DEAUTH;
mlme.im_reason = reason_code;
memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
return set80211var(priv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
}
static int
bsd_sta_disassoc(void *priv, u8 *addr, int reason_code)
{
struct bsd_driver_data *drv = priv;
hostapd *hapd = drv->hapd;
struct ieee80211req_mlme mlme;
HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
"%s: addr=%s reason_code=%d\n",
__func__, ether_sprintf(addr), reason_code);
mlme.im_reason = reason_code;
memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
return set80211var(priv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
}
static int
bsd_del_sta(struct bsd_driver_data *drv, u8 addr[IEEE80211_ADDR_LEN])
{
struct hostapd_data *hapd = drv->hapd;
struct hostapd_config *conf = hapd->conf;
struct sta_info *sta;
hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
HOSTAPD_LEVEL_INFO, "deassociated");
sta = ap_get_sta(hapd, addr);
if (sta != NULL) {
sta->flags &= ~WLAN_STA_ASSOC;
if (conf->wpa)
wpa_sm_event(hapd, sta, WPA_DISASSOC);
sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
ieee802_1x_set_port_enabled(hapd, sta, 0);
ap_free_sta(hapd, sta);
}
return 0;
}
static int
bsd_new_sta(struct bsd_driver_data *drv, u8 addr[IEEE80211_ADDR_LEN])
{
struct hostapd_data *hapd = drv->hapd;
struct hostapd_config *conf = hapd->conf;
struct sta_info *sta;
struct ieee80211req_wpaie ie;
int new_assoc, ielen, res;
hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
HOSTAPD_LEVEL_INFO, "associated");
sta = ap_sta_add(hapd, addr);
if (sta == NULL)
return -1;
/*
* Fetch and validate any negotiated WPA/RSN parameters.
*/
if (conf->wpa) {
memset(&ie, 0, sizeof(ie));
memcpy(ie.wpa_macaddr, addr, IEEE80211_ADDR_LEN);
if (get80211var(drv, IEEE80211_IOC_WPAIE, &ie, sizeof(ie)) < 0) {
printf("Failed to get WPA/RSN information element.\n");
return -1; /* XXX not right */
}
ielen = ie.wpa_ie[1];
if (ielen == 0) {
printf("No WPA/RSN information element for station!\n");
return -1; /* XXX not right */
}
ielen += 2;
res = wpa_validate_wpa_ie(hapd, sta, ie.wpa_ie, ielen,
ie.wpa_ie[0] == WLAN_EID_RSN ?
HOSTAPD_WPA_VERSION_WPA2 :
HOSTAPD_WPA_VERSION_WPA);
if (res != WPA_IE_OK) {
printf("WPA/RSN information element rejected? "
"(res %u)\n", res);
return -1;
}
if (sta->wpa_ie != NULL)
free(sta->wpa_ie);
sta->wpa_ie = malloc(ielen);
if (sta->wpa_ie == NULL) {
printf("No memory for WPA/RSN information element!\n");
return -1;
}
memcpy(sta->wpa_ie, ie.wpa_ie, ielen);
sta->wpa_ie_len = ielen;
} else {
if (sta->wpa_ie != NULL)
free(sta->wpa_ie);
sta->wpa_ie = NULL;
sta->wpa_ie_len = 0;
}
/*
* Now that the internal station state is setup
* kick the authenticator into action.
*/
new_assoc = (sta->flags & WLAN_STA_ASSOC) == 0;
sta->flags |= WLAN_STA_ASSOC;
if (new_assoc) {
if (conf->wpa)
wpa_sm_event(hapd, sta, WPA_ASSOC);
hostapd_new_assoc_sta(hapd, sta, !new_assoc);
} else {
if (conf->wpa)
wpa_sm_event(hapd, sta, WPA_REAUTH);
}
ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
return 0;
}
#include <net/route.h>
#include <net80211/ieee80211_netbsd.h>
static void
bsd_wireless_event_receive(int sock, void *ctx, void *sock_ctx)
{
struct bsd_driver_data *drv = ctx;
struct hostapd_data *hapd = drv->hapd;
char buf[2048];
struct if_announcemsghdr *ifan;
struct rt_msghdr *rtm;
struct ieee80211_michael_event *mic;
struct ieee80211_join_event *join;
struct ieee80211_leave_event *leave;
int n;
n = read(sock, buf, sizeof(buf));
if (n < 0) {
if (errno != EINTR && errno != EAGAIN)
perror("read(PF_ROUTE)");
return;
}
rtm = (struct rt_msghdr *) buf;
if (rtm->rtm_version != RTM_VERSION) {
wpa_printf(MSG_DEBUG, "Routing message version %d not "
"understood\n", rtm->rtm_version);
return;
}
ifan = (struct if_announcemsghdr *) rtm;
switch (rtm->rtm_type) {
case RTM_IEEE80211:
switch (ifan->ifan_what) {
case RTM_IEEE80211_ASSOC:
case RTM_IEEE80211_REASSOC:
case RTM_IEEE80211_DISASSOC:
case RTM_IEEE80211_SCAN:
break;
case RTM_IEEE80211_LEAVE:
leave = (struct ieee80211_leave_event *) &ifan[1];
bsd_del_sta(drv, leave->iev_addr);
break;
case RTM_IEEE80211_JOIN:
#ifdef RTM_IEEE80211_REJOIN
case RTM_IEEE80211_REJOIN:
#endif
join = (struct ieee80211_join_event *) &ifan[1];
bsd_new_sta(drv, join->iev_addr);
break;
case RTM_IEEE80211_REPLAY:
/* ignore */
break;
case RTM_IEEE80211_MICHAEL:
mic = (struct ieee80211_michael_event *) &ifan[1];
wpa_printf(MSG_DEBUG,
"Michael MIC failure wireless event: "
"keyix=%u src_addr=" MACSTR, mic->iev_keyix,
MAC2STR(mic->iev_src));
ieee80211_michael_mic_failure(hapd, mic->iev_src, 1);
break;
}
break;
}
}
static int
bsd_wireless_event_init(void *priv)
{
struct bsd_driver_data *drv = priv;
int s;
drv->wext_sock = -1;
s = socket(PF_ROUTE, SOCK_RAW, 0);
if (s < 0) {
perror("socket(PF_ROUTE,SOCK_RAW)");
return -1;
}
eloop_register_read_sock(s, bsd_wireless_event_receive, drv, NULL);
drv->wext_sock = s;
return 0;
}
static void
bsd_wireless_event_deinit(void *priv)
{
struct bsd_driver_data *drv = priv;
if (drv != NULL) {
if (drv->wext_sock < 0)
return;
eloop_unregister_read_sock(drv->wext_sock);
close(drv->wext_sock);
}
}
static int
bsd_send_eapol(void *priv, u8 *addr, u8 *data, size_t data_len, int encrypt)
{
struct bsd_driver_data *drv = priv;
hostapd *hapd = drv->hapd;
unsigned char buf[3000];
unsigned char *bp = buf;
struct l2_ethhdr *eth;
size_t len;
int status;
/*
* Prepend the Etherent header. If the caller left us
* space at the front we could just insert it but since
* we don't know we copy to a local buffer. Given the frequency
* and size of frames this probably doesn't matter.
*/
len = data_len + sizeof(struct l2_ethhdr);
if (len > sizeof(buf)) {
bp = malloc(len);
if (bp == NULL) {
printf("EAPOL frame discarded, cannot malloc temp "
"buffer of size %u!\n", len);
return -1;
}
}
eth = (struct l2_ethhdr *) bp;
memcpy(eth->h_dest, addr, ETH_ALEN);
memcpy(eth->h_source, drv->hapd->own_addr, ETH_ALEN);
eth->h_proto = htons(ETH_P_EAPOL);
memcpy(eth+1, data, data_len);
if (HOSTAPD_DEBUG_COND(HOSTAPD_DEBUG_MSGDUMPS))
hostapd_hexdump("TX EAPOL", bp, len);
status = l2_packet_send(drv->sock_xmit, addr, ETH_P_EAPOL, bp, len);
if (bp != buf)
free(bp);
return status;
}
static void
handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)
{
struct bsd_driver_data *drv = ctx;
hostapd *hapd = drv->hapd;
struct sta_info *sta;
sta = ap_get_sta(hapd, src_addr);
if (!sta || !(sta->flags & WLAN_STA_ASSOC)) {
printf("Data frame from not associated STA %s\n",
ether_sprintf(src_addr));
/* XXX cannot happen */
return;
}
ieee802_1x_receive(hapd, src_addr, buf + sizeof(struct l2_ethhdr),
len - sizeof(struct l2_ethhdr));
}
static int
bsd_get_ssid(void *priv, u8 *buf, int len)
{
struct bsd_driver_data *drv = priv;
hostapd *hapd = drv->hapd;
struct ieee80211_nwid nwid;
struct ifreq ifr;
memset(&ifr, 0, sizeof(ifr));
strncpy(ifr.ifr_name, drv->iface, sizeof(ifr.ifr_name));
ifr.ifr_data = (void *)&nwid;
if (ioctl(drv->ioctl_sock, SIOCG80211NWID, &ifr) < 0 ||
nwid.i_len > IEEE80211_NWID_LEN)
return -1;
memcpy(buf, nwid.i_nwid, nwid.i_len);
HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL, "%s: ssid=\"%.*s\"\n",
__func__, nwid.i_len, buf);
return nwid.i_len;
}
static int
bsd_set_ssid(void *priv, u8 *buf, int len)
{
struct bsd_driver_data *drv = priv;
hostapd *hapd = drv->hapd;
struct ieee80211_nwid nwid;
struct ifreq ifr;
memcpy(nwid.i_nwid, buf, len);
nwid.i_len = len;
memset(&ifr, 0, sizeof(ifr));
(void)strncpy(ifr.ifr_name, drv->iface, sizeof(ifr.ifr_name));
ifr.ifr_data = (void *)&nwid;
HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL, "%s: ssid=\"%.*s\"\n",
__func__, len, buf);
return ioctl(drv->ioctl_sock, SIOCS80211NWID, &ifr);
}
static int
bsd_set_countermeasures(void *priv, int enabled)
{
struct bsd_driver_data *drv = priv;
wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
return set80211param(drv, IEEE80211_IOC_COUNTERMEASURES, enabled);
}
static int
bsd_init(struct hostapd_data *hapd)
{
struct bsd_driver_data *drv;
drv = malloc(sizeof(struct bsd_driver_data));
if (drv == NULL) {
printf("Could not allocate memory for bsd driver data\n");
goto bad;
}
memset(drv, 0, sizeof(*drv));
drv->ops = bsd_driver_ops;
drv->hapd = hapd;
drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
if (drv->ioctl_sock < 0) {
perror("socket[PF_INET,SOCK_DGRAM]");
goto bad;
}
memcpy(drv->iface, hapd->conf->iface, sizeof(drv->iface));
drv->sock_xmit = l2_packet_init(drv->iface, NULL, ETH_P_EAPOL,
handle_read, drv, 1);
if (drv->sock_xmit == NULL)
goto bad;
if (l2_packet_get_own_addr(drv->sock_xmit, hapd->own_addr))
goto bad;
bsd_set_iface_flags(drv, 0); /* mark down during setup */
hapd->driver = &drv->ops;
return 0;
bad:
if (drv != NULL) {
if (drv->sock_xmit != NULL)
l2_packet_deinit(drv->sock_xmit);
if (drv->ioctl_sock >= 0)
close(drv->ioctl_sock);
free(drv);
}
return -1;
}
static void
bsd_deinit(void *priv)
{
struct bsd_driver_data *drv = priv;
drv->hapd->driver = NULL;
(void) bsd_set_iface_flags(drv, 0);
if (drv->ioctl_sock >= 0)
close(drv->ioctl_sock);
if (drv->sock_xmit != NULL)
l2_packet_deinit(drv->sock_xmit);
free(drv);
}
static const struct driver_ops bsd_driver_ops = {
.name = "bsd",
.init = bsd_init,
.deinit = bsd_deinit,
.set_ieee8021x = bsd_set_ieee8021x,
.set_privacy = bsd_set_privacy,
.set_encryption = bsd_set_key,
.get_seqnum = bsd_get_seqnum,
.flush = bsd_flush,
.set_generic_elem = bsd_set_opt_ie,
.wireless_event_init = bsd_wireless_event_init,
.wireless_event_deinit = bsd_wireless_event_deinit,
.set_sta_authorized = bsd_set_sta_authorized,
.read_sta_data = bsd_read_sta_driver_data,
.send_eapol = bsd_send_eapol,
.sta_disassoc = bsd_sta_disassoc,
.sta_deauth = bsd_sta_deauth,
.set_ssid = bsd_set_ssid,
.get_ssid = bsd_get_ssid,
.set_countermeasures = bsd_set_countermeasures,
.sta_clear_stats = bsd_sta_clear_stats,
};
void bsd_driver_register(void)
{
driver_register(bsd_driver_ops.name, &bsd_driver_ops);
}
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