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fragattacks/src/drivers/driver_bsd.c
Roy Marples a5b73cc49d driver_bsd.c: Use new MLME method of association. 
Old way does not work with all drivers on NetBSD and FreeBSD are
also using this so should be a safe change. [Bug 312]

Signed-off-by: Roy Marples <roy@marples.name>
2009-05-29 22:41:43 +03:00

1534 lines
39 KiB
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/*
* WPA Supplicant - 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.
*/
#include "includes.h"
#include <sys/ioctl.h>
#include "common.h"
#include "driver.h"
#include "eloop.h"
#include "ieee802_11_defs.h"
#include <net/if.h>
#ifdef __NetBSD__
#include <net/if_ether.h>
#else
#include <net/ethernet.h>
#endif
#include <net/route.h>
#include <net80211/ieee80211.h>
#include <net80211/ieee80211_crypto.h>
#include <net80211/ieee80211_ioctl.h>
#if __FreeBSD__
#include <net80211/ieee80211_freebsd.h>
#endif
#if __NetBSD__
#include <net80211/ieee80211_netbsd.h>
#endif
/* Generic functions for hostapd and wpa_supplicant */
static int
bsd_set80211var(int s, const char *ifname, int op, const void *arg, int arg_len)
{
struct ieee80211req ireq;
os_memset(&ireq, 0, sizeof(ireq));
os_strlcpy(ireq.i_name, ifname, sizeof(ireq.i_name));
ireq.i_type = op;
ireq.i_len = arg_len;
ireq.i_data = (void *) arg;
if (ioctl(s, SIOCS80211, &ireq) < 0) {
fprintf(stderr, "ioctl[SIOCS80211, op %u, len %u]: %s\n",
op, arg_len, strerror(errno));
return -1;
}
return 0;
}
static int
bsd_get80211var(int s, const char *ifname, int op, void *arg, int arg_len)
{
struct ieee80211req ireq;
os_memset(&ireq, 0, sizeof(ireq));
os_strlcpy(ireq.i_name, ifname, sizeof(ireq.i_name));
ireq.i_type = op;
ireq.i_len = arg_len;
ireq.i_data = arg;
if (ioctl(s, SIOCG80211, &ireq) < 0) {
fprintf(stderr, "ioctl[SIOCG80211, op %u, len %u]: %s\n",
op, arg_len, strerror(errno));
return -1;
}
return ireq.i_len;
}
static int
bsd_set80211param(int s, const char *ifname, int op, int arg)
{
struct ieee80211req ireq;
os_memset(&ireq, 0, sizeof(ireq));
os_strlcpy(ireq.i_name, ifname, sizeof(ireq.i_name));
ireq.i_type = op;
ireq.i_val = arg;
if (ioctl(s, SIOCS80211, &ireq) < 0) {
fprintf(stderr, "ioctl[SIOCS80211, op %u, arg 0x%x]: %s\n",
op, arg, strerror(errno));
return -1;
}
return 0;
}
static int
bsd_get_ssid(int s, const char *ifname, u8 *ssid)
{
#ifdef SIOCG80211NWID
struct ieee80211_nwid nwid;
struct ifreq ifr;
os_memset(&ifr, 0, sizeof(ifr));
os_strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
ifr.ifr_data = (void *)&nwid;
if (ioctl(s, SIOCG80211NWID, &ifr) < 0 ||
nwid.i_len > IEEE80211_NWID_LEN)
return -1;
os_memcpy(ssid, nwid.i_nwid, nwid.i_len);
return nwid.i_len;
#else
return bsd_get80211var(s, ifname, IEEE80211_IOC_SSID,
ssid, IEEE80211_NWID_LEN);
#endif
}
static int
bsd_set_ssid(int s, const char *ifname, const u8 *ssid, size_t ssid_len)
{
#ifdef SIOCS80211NWID
struct ieee80211_nwid nwid;
struct ifreq ifr;
os_memcpy(nwid.i_nwid, ssid, ssid_len);
nwid.i_len = ssid_len;
os_memset(&ifr, 0, sizeof(ifr));
os_strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
ifr.ifr_data = (void *)&nwid;
return ioctl(s, SIOCS80211NWID, &ifr);
#else
return bsd_set80211var(s, ifname, IEEE80211_IOC_SSID, ssid, ssid_len);
#endif
}
#ifdef HOSTAPD
/*
* Avoid conflicts with hostapd definitions by undefining couple of defines
* from net80211 header files.
*/
#undef RSN_VERSION
#undef WPA_VERSION
#undef WPA_OUI_TYPE
#include "l2_packet/l2_packet.h"
#include "../../hostapd/hostapd.h"
#include "../../hostapd/config.h"
#include "../../hostapd/eapol_sm.h"
#include "../../hostapd/sta_flags.h"
struct bsd_driver_data {
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 int bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
int reason_code);
static int
set80211var(struct bsd_driver_data *drv, int op, const void *arg, int arg_len)
{
return bsd_set80211var(drv->ioctl_sock, drv->iface, op, arg, arg_len);
}
static int
get80211var(struct bsd_driver_data *drv, int op, void *arg, int arg_len)
{
return bsd_get80211var(drv->ioctl_sock, drv->iface, op, arg, arg_len);
}
static int
set80211param(struct bsd_driver_data *drv, int op, int arg)
{
return bsd_set80211param(drv->ioctl_sock, drv->iface, op, arg);
}
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", "CKIP", "NONE" };
struct hostapd_data *hapd = drv->hapd;
struct hostapd_bss_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;
}
wpa_printf(MSG_DEBUG, "%s: group key cipher=%s (%u)",
__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;
wpa_printf(MSG_DEBUG, "%s: pairwise key ciphers=0x%x", __func__, v);
if (set80211param(drv, IEEE80211_IOC_UCASTCIPHERS, v)) {
printf("Unable to set pairwise key ciphers to 0x%x\n", v);
return -1;
}
wpa_printf(MSG_DEBUG, "%s: key management algorithms=0x%x",
__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);
wpa_printf(MSG_DEBUG, "%s: rsn capabilities=0x%x",
__func__, conf->rsn_preauth);
if (set80211param(drv, IEEE80211_IOC_RSNCAPS, v)) {
printf("Unable to set RSN capabilities to 0x%x\n", v);
return -1;
}
wpa_printf(MSG_DEBUG, "%s: enable WPA= 0x%x", __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;
struct ifreq ifr;
wpa_printf(MSG_DEBUG, "%s: dev_up=%d", __func__, dev_up);
if (drv->ioctl_sock < 0)
return -1;
memset(&ifr, 0, sizeof(ifr));
os_strlcpy(ifr.ifr_name, drv->iface, sizeof(ifr.ifr_name));
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));
os_strlcpy(ifr.ifr_name, drv->iface, sizeof(ifr.ifr_name));
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(const char *ifname, void *priv, int enabled)
{
struct bsd_driver_data *drv = priv;
struct hostapd_data *hapd = drv->hapd;
struct hostapd_bss_config *conf = hapd->conf;
wpa_printf(MSG_DEBUG, "%s: enabled=%d", __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(const char *ifname, void *priv, int enabled)
{
struct bsd_driver_data *drv = priv;
wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
return set80211param(drv, IEEE80211_IOC_PRIVACY, enabled);
}
static int
bsd_set_sta_authorized(void *priv, const u8 *addr, int authorized)
{
struct bsd_driver_data *drv = priv;
struct ieee80211req_mlme mlme;
wpa_printf(MSG_DEBUG, "%s: addr=%s authorized=%d",
__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(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
}
static int
bsd_sta_set_flags(void *priv, const u8 *addr, int total_flags, int flags_or,
int flags_and)
{
/* For now, only support setting Authorized flag */
if (flags_or & WLAN_STA_AUTHORIZED)
return bsd_set_sta_authorized(priv, addr, 1);
if (!(flags_and & WLAN_STA_AUTHORIZED))
return bsd_set_sta_authorized(priv, addr, 0);
return 0;
}
static int
bsd_del_key(void *priv, const u8 *addr, int key_idx)
{
struct bsd_driver_data *drv = priv;
struct ieee80211req_del_key wk;
wpa_printf(MSG_DEBUG, "%s: addr=%s key_idx=%d",
__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(drv, IEEE80211_IOC_DELKEY, &wk, sizeof(wk));
}
static int
bsd_set_key(const char *ifname, void *priv, wpa_alg alg,
const u8 *addr, int key_idx, int set_tx, const u8 *seq,
size_t seq_len, const u8 *key, size_t key_len)
{
struct bsd_driver_data *drv = priv;
struct ieee80211req_key wk;
u_int8_t cipher;
if (alg == WPA_ALG_NONE)
return bsd_del_key(drv, addr, key_idx);
wpa_printf(MSG_DEBUG, "%s: alg=%d addr=%s key_idx=%d",
__func__, alg, ether_sprintf(addr), key_idx);
if (alg == WPA_ALG_WEP)
cipher = IEEE80211_CIPHER_WEP;
else if (alg == WPA_ALG_TKIP)
cipher = IEEE80211_CIPHER_TKIP;
else if (alg == WPA_ALG_CCMP)
cipher = IEEE80211_CIPHER_AES_CCM;
else {
printf("%s: unknown/unsupported algorithm %d\n",
__func__, alg);
return -1;
}
if (key_len > sizeof(wk.ik_keydata)) {
printf("%s: key length %d too big\n", __func__, (int) 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;
} 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(drv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk));
}
static int
bsd_get_seqnum(const char *ifname, void *priv, const u8 *addr, int idx,
u8 *seq)
{
struct bsd_driver_data *drv = priv;
struct ieee80211req_key wk;
wpa_printf(MSG_DEBUG, "%s: addr=%s idx=%d",
__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;
}
#ifdef WORDS_BIGENDIAN
{
/*
* wk.ik_keytsc is in host byte order (big endian), need to
* swap it to match with the byte order used in WPA.
*/
int i;
u8 tmp[WPA_KEY_RSC_LEN];
memcpy(tmp, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
for (i = 0; i < WPA_KEY_RSC_LEN; i++) {
seq[i] = tmp[WPA_KEY_RSC_LEN - i - 1];
}
}
#else /* WORDS_BIGENDIAN */
memcpy(seq, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
#endif /* WORDS_BIGENDIAN */
return 0;
}
static int
bsd_flush(void *priv)
{
u8 allsta[IEEE80211_ADDR_LEN];
memset(allsta, 0xff, IEEE80211_ADDR_LEN);
return bsd_sta_deauth(priv, NULL, allsta, IEEE80211_REASON_AUTH_LEAVE);
}
static int
bsd_read_sta_driver_data(void *priv, struct hostap_sta_driver_data *data,
const 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_set_opt_ie(const char *ifname, 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, const u8 *own_addr, const u8 *addr, int reason_code)
{
struct bsd_driver_data *drv = priv;
struct ieee80211req_mlme mlme;
wpa_printf(MSG_DEBUG, "%s: addr=%s reason_code=%d",
__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(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
}
static int
bsd_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
int reason_code)
{
struct bsd_driver_data *drv = priv;
struct ieee80211req_mlme mlme;
wpa_printf(MSG_DEBUG, "%s: addr=%s reason_code=%d",
__func__, ether_sprintf(addr), reason_code);
mlme.im_op = IEEE80211_MLME_DISASSOC;
mlme.im_reason = reason_code;
memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
}
static int
bsd_new_sta(struct bsd_driver_data *drv, u8 addr[IEEE80211_ADDR_LEN])
{
struct hostapd_data *hapd = drv->hapd;
struct ieee80211req_wpaie ie;
int ielen = 0;
u8 *iebuf = NULL;
/*
* Fetch and validate any negotiated WPA/RSN parameters.
*/
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");
goto no_ie;
}
iebuf = ie.wpa_ie;
ielen = ie.wpa_ie[1];
if (ielen == 0)
iebuf = NULL;
else
ielen += 2;
no_ie:
return hostapd_notif_assoc(hapd, addr, iebuf, ielen);
}
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];
hostapd_notif_disassoc(drv->hapd, 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));
hostapd_michael_mic_failure(hapd, mic->iev_src);
break;
}
break;
}
}
static int
bsd_wireless_event_init(struct bsd_driver_data *drv)
{
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(struct bsd_driver_data *drv)
{
if (drv->wext_sock < 0)
return;
eloop_unregister_read_sock(drv->wext_sock);
close(drv->wext_sock);
}
static int
bsd_send_eapol(void *priv, const u8 *addr, const u8 *data, size_t data_len,
int encrypt, const u8 *own_addr)
{
struct bsd_driver_data *drv = priv;
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", (unsigned int) len);
return -1;
}
}
eth = (struct l2_ethhdr *) bp;
memcpy(eth->h_dest, addr, ETH_ALEN);
memcpy(eth->h_source, own_addr, ETH_ALEN);
eth->h_proto = htons(ETH_P_EAPOL);
memcpy(eth+1, data, data_len);
wpa_hexdump(MSG_MSGDUMP, "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_eapol_receive(drv->hapd, src_addr,
buf + sizeof(struct l2_ethhdr),
len - sizeof(struct l2_ethhdr));
}
static int
hostapd_bsd_get_ssid(const char *ifname, void *priv, u8 *buf, int len)
{
struct bsd_driver_data *drv = priv;
int ssid_len;
ssid_len = bsd_get_ssid(drv->ioctl_sock, drv->iface, buf);
wpa_printf(MSG_DEBUG, "%s: ssid=\"%.*s\"", __func__, ssid_len, buf);
return ssid_len;
}
static int
hostapd_bsd_set_ssid(const char *ifname, void *priv, const u8 *buf, int len)
{
struct bsd_driver_data *drv = priv;
wpa_printf(MSG_DEBUG, "%s: ssid=\"%.*s\"", __func__, len, buf);
return bsd_set_ssid(drv->ioctl_sock, drv->iface, buf, len);
}
static void *
bsd_init(struct hostapd_data *hapd, struct wpa_init_params *params)
{
struct bsd_driver_data *drv;
drv = os_zalloc(sizeof(struct bsd_driver_data));
if (drv == NULL) {
printf("Could not allocate memory for bsd driver data\n");
goto bad;
}
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, params->ifname, 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, params->own_addr))
goto bad;
bsd_set_iface_flags(drv, 0); /* mark down during setup */
if (bsd_wireless_event_init(drv))
goto bad;
return drv;
bad:
if (drv->sock_xmit != NULL)
l2_packet_deinit(drv->sock_xmit);
if (drv->ioctl_sock >= 0)
close(drv->ioctl_sock);
if (drv != NULL)
free(drv);
return NULL;
}
static void
bsd_deinit(void *priv)
{
struct bsd_driver_data *drv = priv;
bsd_wireless_event_deinit(drv);
(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);
}
const struct wpa_driver_ops wpa_driver_bsd_ops = {
.name = "bsd",
.hapd_init = bsd_init,
.hapd_deinit = bsd_deinit,
.set_ieee8021x = bsd_set_ieee8021x,
.set_privacy = bsd_set_privacy,
.hapd_set_key = bsd_set_key,
.get_seqnum = bsd_get_seqnum,
.flush = bsd_flush,
.set_generic_elem = bsd_set_opt_ie,
.sta_set_flags = bsd_sta_set_flags,
.read_sta_data = bsd_read_sta_driver_data,
.hapd_send_eapol = bsd_send_eapol,
.sta_disassoc = bsd_sta_disassoc,
.sta_deauth = bsd_sta_deauth,
.hapd_set_ssid = hostapd_bsd_set_ssid,
.hapd_get_ssid = hostapd_bsd_get_ssid,
};
#else /* HOSTAPD */
struct wpa_driver_bsd_data {
int sock; /* open socket for 802.11 ioctls */
int route; /* routing socket for events */
char ifname[IFNAMSIZ+1]; /* interface name */
unsigned int ifindex; /* interface index */
void *ctx;
int prev_roaming; /* roaming state to restore on deinit */
int prev_privacy; /* privacy state to restore on deinit */
int prev_wpa; /* wpa state to restore on deinit */
};
static int
set80211var(struct wpa_driver_bsd_data *drv, int op, const void *arg, int arg_len)
{
return bsd_set80211var(drv->sock, drv->ifname, op, arg, arg_len);
}
static int
get80211var(struct wpa_driver_bsd_data *drv, int op, void *arg, int arg_len)
{
return bsd_get80211var(drv->sock, drv->ifname, op, arg, arg_len);
}
static int
set80211param(struct wpa_driver_bsd_data *drv, int op, int arg)
{
return bsd_set80211param(drv->sock, drv->ifname, op, arg);
}
static int
get80211param(struct wpa_driver_bsd_data *drv, int op)
{
struct ieee80211req ireq;
os_memset(&ireq, 0, sizeof(ireq));
os_strlcpy(ireq.i_name, drv->ifname, sizeof(ireq.i_name));
ireq.i_type = op;
if (ioctl(drv->sock, SIOCG80211, &ireq) < 0) {
fprintf(stderr, "ioctl[SIOCG80211, op %u]: %s\n",
op, strerror(errno));
return -1;
}
return ireq.i_val;
}
static int
getifflags(struct wpa_driver_bsd_data *drv, int *flags)
{
struct ifreq ifr;
os_memset(&ifr, 0, sizeof(ifr));
os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
if (ioctl(drv->sock, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) {
perror("SIOCGIFFLAGS");
return errno;
}
*flags = ifr.ifr_flags & 0xffff;
return 0;
}
static int
setifflags(struct wpa_driver_bsd_data *drv, int flags)
{
struct ifreq ifr;
os_memset(&ifr, 0, sizeof(ifr));
os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
ifr.ifr_flags = flags & 0xffff;
if (ioctl(drv->sock, SIOCSIFFLAGS, (caddr_t)&ifr) < 0) {
perror("SIOCSIFFLAGS");
return errno;
}
return 0;
}
static int
wpa_driver_bsd_get_bssid(void *priv, u8 *bssid)
{
struct wpa_driver_bsd_data *drv = priv;
#ifdef SIOCG80211BSSID
struct ieee80211_bssid bs;
os_strncpy(bs.i_name, drv->ifname, sizeof(bs.i_name));
if (ioctl(drv->sock, SIOCG80211BSSID, &bs) < 0)
return -1;
os_memcpy(bssid, bs.i_bssid, sizeof(bs.i_bssid));
return 0;
#else
return get80211var(drv, IEEE80211_IOC_BSSID,
bssid, IEEE80211_ADDR_LEN) < 0 ? -1 : 0;
#endif
}
#if 0
static int
wpa_driver_bsd_set_bssid(void *priv, const char *bssid)
{
struct wpa_driver_bsd_data *drv = priv;
return set80211var(drv, IEEE80211_IOC_BSSID,
bssid, IEEE80211_ADDR_LEN);
}
#endif
static int
wpa_driver_bsd_get_ssid(void *priv, u8 *ssid)
{
struct wpa_driver_bsd_data *drv = priv;
return bsd_get_ssid(drv->sock, drv->ifname, ssid);
}
static int
wpa_driver_bsd_set_ssid(void *priv, const u8 *ssid,
size_t ssid_len)
{
struct wpa_driver_bsd_data *drv = priv;
return bsd_set_ssid(drv->sock, drv->ifname, ssid, ssid_len);
}
static int
wpa_driver_bsd_set_wpa_ie(struct wpa_driver_bsd_data *drv,
const u8 *wpa_ie, size_t wpa_ie_len)
{
return set80211var(drv, IEEE80211_IOC_OPTIE, wpa_ie, wpa_ie_len);
}
static int
wpa_driver_bsd_set_wpa_internal(void *priv, int wpa, int privacy)
{
struct wpa_driver_bsd_data *drv = priv;
int ret = 0;
wpa_printf(MSG_DEBUG, "%s: wpa=%d privacy=%d",
__FUNCTION__, wpa, privacy);
if (!wpa && wpa_driver_bsd_set_wpa_ie(drv, NULL, 0) < 0)
ret = -1;
if (set80211param(drv, IEEE80211_IOC_PRIVACY, privacy) < 0)
ret = -1;
if (set80211param(drv, IEEE80211_IOC_WPA, wpa) < 0)
ret = -1;
return ret;
}
static int
wpa_driver_bsd_set_wpa(void *priv, int enabled)
{
wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
return wpa_driver_bsd_set_wpa_internal(priv, enabled ? 3 : 0, enabled);
}
static int
wpa_driver_bsd_del_key(struct wpa_driver_bsd_data *drv, int key_idx,
const unsigned char *addr)
{
struct ieee80211req_del_key wk;
os_memset(&wk, 0, sizeof(wk));
if (addr != NULL &&
bcmp(addr, "\xff\xff\xff\xff\xff\xff", IEEE80211_ADDR_LEN) != 0) {
struct ether_addr ea;
os_memcpy(&ea, addr, IEEE80211_ADDR_LEN);
wpa_printf(MSG_DEBUG, "%s: addr=%s keyidx=%d",
__func__, ether_ntoa(&ea), key_idx);
os_memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
wk.idk_keyix = (uint8_t) IEEE80211_KEYIX_NONE;
} else {
wpa_printf(MSG_DEBUG, "%s: keyidx=%d", __func__, key_idx);
wk.idk_keyix = key_idx;
}
return set80211var(drv, IEEE80211_IOC_DELKEY, &wk, sizeof(wk));
}
static int
wpa_driver_bsd_set_key(void *priv, wpa_alg alg,
const unsigned char *addr, int key_idx, int set_tx,
const u8 *seq, size_t seq_len,
const u8 *key, size_t key_len)
{
struct wpa_driver_bsd_data *drv = priv;
struct ieee80211req_key wk;
struct ether_addr ea;
char *alg_name;
u_int8_t cipher;
if (alg == WPA_ALG_NONE)
return wpa_driver_bsd_del_key(drv, key_idx, addr);
switch (alg) {
case WPA_ALG_WEP:
alg_name = "WEP";
cipher = IEEE80211_CIPHER_WEP;
break;
case WPA_ALG_TKIP:
alg_name = "TKIP";
cipher = IEEE80211_CIPHER_TKIP;
break;
case WPA_ALG_CCMP:
alg_name = "CCMP";
cipher = IEEE80211_CIPHER_AES_CCM;
break;
default:
wpa_printf(MSG_DEBUG, "%s: unknown/unsupported algorithm %d",
__func__, alg);
return -1;
}
os_memcpy(&ea, addr, IEEE80211_ADDR_LEN);
wpa_printf(MSG_DEBUG,
"%s: alg=%s addr=%s key_idx=%d set_tx=%d seq_len=%zu key_len=%zu",
__func__, alg_name, ether_ntoa(&ea), key_idx, set_tx,
seq_len, key_len);
if (seq_len > sizeof(u_int64_t)) {
wpa_printf(MSG_DEBUG, "%s: seq_len %zu too big",
__func__, seq_len);
return -2;
}
if (key_len > sizeof(wk.ik_keydata)) {
wpa_printf(MSG_DEBUG, "%s: key length %zu too big",
__func__, key_len);
return -3;
}
os_memset(&wk, 0, sizeof(wk));
wk.ik_type = cipher;
wk.ik_flags = IEEE80211_KEY_RECV;
if (set_tx)
wk.ik_flags |= IEEE80211_KEY_XMIT;
os_memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
/*
* Deduce whether group/global or unicast key by checking
* the address (yech). Note also that we can only mark global
* keys default; doing this for a unicast key is an error.
*/
if (bcmp(addr, "\xff\xff\xff\xff\xff\xff", IEEE80211_ADDR_LEN) == 0) {
wk.ik_flags |= IEEE80211_KEY_GROUP;
wk.ik_keyix = key_idx;
} else {
wk.ik_keyix = (key_idx == 0 ? IEEE80211_KEYIX_NONE : key_idx);
}
if (wk.ik_keyix != IEEE80211_KEYIX_NONE && set_tx)
wk.ik_flags |= IEEE80211_KEY_DEFAULT;
wk.ik_keylen = key_len;
os_memcpy(&wk.ik_keyrsc, seq, seq_len);
os_memcpy(wk.ik_keydata, key, key_len);
return set80211var(drv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk));
}
static int
wpa_driver_bsd_set_countermeasures(void *priv, int enabled)
{
struct wpa_driver_bsd_data *drv = priv;
wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
return set80211param(drv, IEEE80211_IOC_COUNTERMEASURES, enabled);
}
static int
wpa_driver_bsd_set_drop_unencrypted(void *priv, int enabled)
{
struct wpa_driver_bsd_data *drv = priv;
wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
return set80211param(drv, IEEE80211_IOC_DROPUNENCRYPTED, enabled);
}
static int
wpa_driver_bsd_deauthenticate(void *priv, const u8 *addr, int reason_code)
{
struct wpa_driver_bsd_data *drv = priv;
struct ieee80211req_mlme mlme;
wpa_printf(MSG_DEBUG, "%s", __func__);
os_memset(&mlme, 0, sizeof(mlme));
mlme.im_op = IEEE80211_MLME_DEAUTH;
mlme.im_reason = reason_code;
os_memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
}
static int
wpa_driver_bsd_disassociate(void *priv, const u8 *addr, int reason_code)
{
struct wpa_driver_bsd_data *drv = priv;
struct ieee80211req_mlme mlme;
wpa_printf(MSG_DEBUG, "%s", __func__);
os_memset(&mlme, 0, sizeof(mlme));
mlme.im_op = IEEE80211_MLME_DISASSOC;
mlme.im_reason = reason_code;
os_memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
}
static int
wpa_driver_bsd_associate(void *priv, struct wpa_driver_associate_params *params)
{
struct wpa_driver_bsd_data *drv = priv;
struct ieee80211req_mlme mlme;
int privacy;
wpa_printf(MSG_DEBUG,
"%s: ssid '%.*s' wpa ie len %u pairwise %u group %u key mgmt %u"
, __func__
, (unsigned int) params->ssid_len, params->ssid
, (unsigned int) params->wpa_ie_len
, params->pairwise_suite
, params->group_suite
, params->key_mgmt_suite
);
/* XXX error handling is wrong but unclear what to do... */
if (wpa_driver_bsd_set_wpa_ie(drv, params->wpa_ie, params->wpa_ie_len) < 0)
return -1;
privacy = !(params->pairwise_suite == CIPHER_NONE &&
params->group_suite == CIPHER_NONE &&
params->key_mgmt_suite == KEY_MGMT_NONE &&
params->wpa_ie_len == 0);
wpa_printf(MSG_DEBUG, "%s: set PRIVACY %u", __func__, privacy);
if (set80211param(drv, IEEE80211_IOC_PRIVACY, privacy) < 0)
return -1;
if (params->wpa_ie_len &&
set80211param(drv, IEEE80211_IOC_WPA,
params->wpa_ie[0] == WLAN_EID_RSN ? 2 : 1) < 0)
return -1;
os_memset(&mlme, 0, sizeof(mlme));
mlme.im_op = IEEE80211_MLME_ASSOC;
if (params->ssid != NULL)
os_memcpy(mlme.im_ssid, params->ssid, params->ssid_len);
mlme.im_ssid_len = params->ssid_len;
if (params->bssid != NULL)
os_memcpy(mlme.im_macaddr, params->bssid, IEEE80211_ADDR_LEN);
if (set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme)) < 0)
return -1;
return 0;
}
static int
wpa_driver_bsd_set_auth_alg(void *priv, int auth_alg)
{
struct wpa_driver_bsd_data *drv = priv;
int authmode;
if ((auth_alg & AUTH_ALG_OPEN_SYSTEM) &&
(auth_alg & AUTH_ALG_SHARED_KEY))
authmode = IEEE80211_AUTH_AUTO;
else if (auth_alg & AUTH_ALG_SHARED_KEY)
authmode = IEEE80211_AUTH_SHARED;
else
authmode = IEEE80211_AUTH_OPEN;
return set80211param(drv, IEEE80211_IOC_AUTHMODE, authmode);
}
static int
wpa_driver_bsd_scan(void *priv, const u8 *ssid, size_t ssid_len)
{
struct wpa_driver_bsd_data *drv = priv;
int flags;
/* NB: interface must be marked UP to do a scan */
if (getifflags(drv, &flags) != 0 || setifflags(drv, flags | IFF_UP) != 0)
return -1;
/* set desired ssid before scan */
if (wpa_driver_bsd_set_ssid(drv, ssid, ssid_len) < 0)
return -1;
/* NB: net80211 delivers a scan complete event so no need to poll */
return set80211param(drv, IEEE80211_IOC_SCAN_REQ, 0);
}
static void
wpa_driver_bsd_event_receive(int sock, void *ctx, void *sock_ctx)
{
struct wpa_driver_bsd_data *drv = sock_ctx;
char buf[2048];
struct if_announcemsghdr *ifan;
struct if_msghdr *ifm;
struct rt_msghdr *rtm;
union wpa_event_data event;
struct ieee80211_michael_event *mic;
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;
}
os_memset(&event, 0, sizeof(event));
switch (rtm->rtm_type) {
case RTM_IFANNOUNCE:
ifan = (struct if_announcemsghdr *) rtm;
if (ifan->ifan_index != drv->ifindex)
break;
strlcpy(event.interface_status.ifname, drv->ifname,
sizeof(event.interface_status.ifname));
switch (ifan->ifan_what) {
case IFAN_DEPARTURE:
event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
default:
return;
}
wpa_printf(MSG_DEBUG, "RTM_IFANNOUNCE: Interface '%s' %s",
event.interface_status.ifname,
ifan->ifan_what == IFAN_DEPARTURE ?
"removed" : "added");
wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
break;
case RTM_IEEE80211:
ifan = (struct if_announcemsghdr *) rtm;
if (ifan->ifan_index != drv->ifindex)
break;
switch (ifan->ifan_what) {
case RTM_IEEE80211_ASSOC:
case RTM_IEEE80211_REASSOC:
wpa_supplicant_event(ctx, EVENT_ASSOC, NULL);
break;
case RTM_IEEE80211_DISASSOC:
wpa_supplicant_event(ctx, EVENT_DISASSOC, NULL);
break;
case RTM_IEEE80211_SCAN:
wpa_supplicant_event(ctx, EVENT_SCAN_RESULTS, NULL);
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));
os_memset(&event, 0, sizeof(event));
event.michael_mic_failure.unicast =
!IEEE80211_IS_MULTICAST(mic->iev_dst);
wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE,
&event);
break;
}
break;
case RTM_IFINFO:
ifm = (struct if_msghdr *) rtm;
if (ifm->ifm_index != drv->ifindex)
break;
if ((rtm->rtm_flags & RTF_UP) == 0) {
strlcpy(event.interface_status.ifname, drv->ifname,
sizeof(event.interface_status.ifname));
event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
wpa_printf(MSG_DEBUG, "RTM_IFINFO: Interface '%s' DOWN",
event.interface_status.ifname);
wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
}
break;
}
}
static void
wpa_driver_bsd_add_scan_entry(struct wpa_scan_results *res,
struct ieee80211req_scan_result *sr)
{
struct wpa_scan_res *result, **tmp;
size_t extra_len;
u8 *pos;
extra_len = 2 + sr->isr_ssid_len;
extra_len += 2 + sr->isr_nrates;
extra_len += 3; /* ERP IE */
extra_len += sr->isr_ie_len;
result = os_zalloc(sizeof(*result) + extra_len);
if (result == NULL)
return;
os_memcpy(result->bssid, sr->isr_bssid, ETH_ALEN);
result->freq = sr->isr_freq;
result->beacon_int = sr->isr_intval;
result->caps = sr->isr_capinfo;
result->qual = sr->isr_rssi;
result->noise = sr->isr_noise;
pos = (u8 *)(result + 1);
*pos++ = WLAN_EID_SSID;
*pos++ = sr->isr_ssid_len;
os_memcpy(pos, sr + 1, sr->isr_ssid_len);
pos += sr->isr_ssid_len;
/*
* Deal all rates as supported rate.
* Because net80211 doesn't report extended supported rate or not.
*/
*pos++ = WLAN_EID_SUPP_RATES;
*pos++ = sr->isr_nrates;
os_memcpy(pos, sr->isr_rates, sr->isr_nrates);
pos += sr->isr_nrates;
*pos++ = WLAN_EID_ERP_INFO;
*pos++ = 1;
*pos++ = sr->isr_erp;
os_memcpy(pos, (u8 *)(sr + 1) + sr->isr_ssid_len, sr->isr_ie_len);
pos += sr->isr_ie_len;
result->ie_len = pos - (u8 *)(result + 1);
tmp = os_realloc(res->res,
(res->num + 1) * sizeof(struct wpa_scan_res *));
if (tmp == NULL) {
os_free(result);
return;
}
tmp[res->num++] = result;
res->res = tmp;
}
struct wpa_scan_results *
wpa_driver_bsd_get_scan_results2(void *priv)
{
struct wpa_driver_bsd_data *drv = priv;
struct ieee80211req_scan_result *sr;
struct wpa_scan_results *res;
int len, rest;
uint8_t buf[24*1024], *pos;
len = get80211var(drv, IEEE80211_IOC_SCAN_RESULTS, buf, 24*1024);
if (len < 0)
return NULL;
res = os_zalloc(sizeof(*res));
if (res == NULL)
return NULL;
pos = buf;
rest = len;
while (rest >= sizeof(struct ieee80211req_scan_result)) {
sr = (struct ieee80211req_scan_result *)pos;
wpa_driver_bsd_add_scan_entry(res, sr);
pos += sr->isr_len;
rest -= sr->isr_len;
}
wpa_printf(MSG_DEBUG, "Received %d bytes of scan results (%lu BSSes)",
len, (unsigned long)res->num);
return res;
}
static void *
wpa_driver_bsd_init(void *ctx, const char *ifname)
{
#define GETPARAM(drv, param, v) \
(((v) = get80211param(drv, param)) != -1)
struct wpa_driver_bsd_data *drv;
drv = os_zalloc(sizeof(*drv));
if (drv == NULL)
return NULL;
/*
* NB: We require the interface name be mappable to an index.
* This implies we do not support having wpa_supplicant
* wait for an interface to appear. This seems ok; that
* doesn't belong here; it's really the job of devd.
*/
drv->ifindex = if_nametoindex(ifname);
if (drv->ifindex == 0) {
wpa_printf(MSG_DEBUG, "%s: interface %s does not exist",
__func__, ifname);
goto fail1;
}
drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
if (drv->sock < 0)
goto fail1;
drv->route = socket(PF_ROUTE, SOCK_RAW, 0);
if (drv->route < 0)
goto fail;
eloop_register_read_sock(drv->route,
wpa_driver_bsd_event_receive, ctx, drv);
drv->ctx = ctx;
os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
if (!GETPARAM(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming)) {
wpa_printf(MSG_DEBUG, "%s: failed to get roaming state: %s",
__func__, strerror(errno));
goto fail;
}
if (!GETPARAM(drv, IEEE80211_IOC_PRIVACY, drv->prev_privacy)) {
wpa_printf(MSG_DEBUG, "%s: failed to get privacy state: %s",
__func__, strerror(errno));
goto fail;
}
if (!GETPARAM(drv, IEEE80211_IOC_WPA, drv->prev_wpa)) {
wpa_printf(MSG_DEBUG, "%s: failed to get wpa state: %s",
__func__, strerror(errno));
goto fail;
}
if (set80211param(drv, IEEE80211_IOC_ROAMING, IEEE80211_ROAMING_MANUAL) < 0) {
wpa_printf(MSG_DEBUG, "%s: failed to set wpa_supplicant-based "
"roaming: %s", __func__, strerror(errno));
goto fail;
}
if (set80211param(drv, IEEE80211_IOC_WPA, 1+2) < 0) {
wpa_printf(MSG_DEBUG, "%s: failed to enable WPA support %s",
__func__, strerror(errno));
goto fail;
}
return drv;
fail:
close(drv->sock);
fail1:
os_free(drv);
return NULL;
#undef GETPARAM
}
static void
wpa_driver_bsd_deinit(void *priv)
{
struct wpa_driver_bsd_data *drv = priv;
int flags;
eloop_unregister_read_sock(drv->route);
/* NB: mark interface down */
if (getifflags(drv, &flags) == 0)
(void) setifflags(drv, flags &~ IFF_UP);
wpa_driver_bsd_set_wpa_internal(drv, drv->prev_wpa, drv->prev_privacy);
if (set80211param(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming) < 0)
wpa_printf(MSG_DEBUG, "%s: failed to restore roaming state",
__func__);
(void) close(drv->route); /* ioctl socket */
(void) close(drv->sock); /* event socket */
os_free(drv);
}
const struct wpa_driver_ops wpa_driver_bsd_ops = {
.name = "bsd",
.desc = "BSD 802.11 support",
.init = wpa_driver_bsd_init,
.deinit = wpa_driver_bsd_deinit,
.get_bssid = wpa_driver_bsd_get_bssid,
.get_ssid = wpa_driver_bsd_get_ssid,
.set_wpa = wpa_driver_bsd_set_wpa,
.set_key = wpa_driver_bsd_set_key,
.set_countermeasures = wpa_driver_bsd_set_countermeasures,
.set_drop_unencrypted = wpa_driver_bsd_set_drop_unencrypted,
.scan = wpa_driver_bsd_scan,
.get_scan_results2 = wpa_driver_bsd_get_scan_results2,
.deauthenticate = wpa_driver_bsd_deauthenticate,
.disassociate = wpa_driver_bsd_disassociate,
.associate = wpa_driver_bsd_associate,
.set_auth_alg = wpa_driver_bsd_set_auth_alg,
};
#endif /* HOSTAPD */
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