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

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/* $NetBSD: driver_netbsd.c,v 1.1 2005/10/01 18:50:12 scw Exp $ */
/*
* WPA Supplicant - driver interaction with BSD net80211 layer
* Copyright (c) 2004, Sam Leffler <sam@errno.com>
*
* 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: /usr/local/www/cvsroot/FreeBSD/src/usr.sbin/wpa/wpa_supplicant/driver_freebsd.c,v 1.8 2005/08/30 15:59:49 sam Exp $
*/
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <sys/ioctl.h>
#include <errno.h>
#include "common.h"
#include "driver.h"
#include "eloop.h"
#include "wpa_supplicant.h"
#include "l2_packet.h"
#include "wpa.h" /* XXX for RSN_INFO_ELEM */
#include <sys/socket.h>
#include <net/if.h>
#include <net/if_ether.h>
#include <net80211/ieee80211.h>
#include <net80211/ieee80211_crypto.h>
#include <net80211/ieee80211_ioctl.h>
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)
{
struct ieee80211req ireq;
memset(&ireq, 0, sizeof(ireq));
strncpy(ireq.i_name, drv->ifname, IFNAMSIZ);
ireq.i_type = op;
ireq.i_len = arg_len;
ireq.i_data = (void *) arg;
if (ioctl(drv->sock, SIOCS80211, &ireq) < 0) {
fprintf(stderr, "ioctl[SIOCS80211, op %u, len %u]: %s\n",
op, arg_len, strerror(errno));
return -1;
}
return 0;
}
static int
get80211var(struct wpa_driver_bsd_data *drv, int op, void *arg, int arg_len)
{
struct ieee80211req ireq;
memset(&ireq, 0, sizeof(ireq));
strncpy(ireq.i_name, drv->ifname, IFNAMSIZ);
ireq.i_type = op;
ireq.i_len = arg_len;
ireq.i_data = arg;
if (ioctl(drv->sock, SIOCG80211, &ireq) < 0) {
perror("ioctl[SIOCG80211]");
return -1;
}
return ireq.i_len;
}
static int
set80211param(struct wpa_driver_bsd_data *drv, int op, int arg)
{
struct ieee80211req ireq;
memset(&ireq, 0, sizeof(ireq));
strncpy(ireq.i_name, drv->ifname, IFNAMSIZ);
ireq.i_type = op;
ireq.i_val = arg;
if (ioctl(drv->sock, SIOCS80211, &ireq) < 0) {
perror("ioctl[SIOCS80211]");
fprintf(stderr, "ioctl[SIOCS80211, op %u, arg 0x%x]: %s\n",
op, arg, strerror(errno));
return -1;
}
return 0;
}
static int
get80211param(struct wpa_driver_bsd_data *drv, int op)
{
struct ieee80211req ireq;
memset(&ireq, 0, sizeof(ireq));
strncpy(ireq.i_name, drv->ifname, IFNAMSIZ);
ireq.i_type = op;
if (ioctl(drv->sock, SIOCG80211, &ireq) < 0) {
perror("ioctl[SIOCG80211]");
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;
memset(&ifr, 0, sizeof(ifr));
strncpy(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;
memset(&ifr, 0, sizeof(ifr));
strncpy(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;
struct ieee80211_bssid bs;
strncpy(bs.i_name, drv->ifname, sizeof(bs.i_name));
if (ioctl(drv->sock, SIOCG80211BSSID, &bs) < 0)
return -1;
memcpy(bssid, bs.i_bssid, sizeof(bs.i_bssid));
return 0;
}
#if 0
static int
wpa_driver_bsd_set_bssid(void *priv, const char *bssid)
{
struct wpa_driver_bsd_data *drv = priv;
struct ieee80211_bssid bs;
strncpy(bs.i_name, drv->ifname, sizeof(bs.i_name);
memcpy(bs.i_bssid, bssid, sizeof(bs.i_bssid));
return ioctl(drv->sock, SIOCS80211BSSID, &bs);
}
#endif
static int
wpa_driver_bsd_get_ssid(void *priv, u8 *ssid)
{
struct wpa_driver_bsd_data *drv = priv;
struct ieee80211_nwid nwid;
struct ifreq ifr;
memset(&ifr, 0, sizeof(ifr));
strncpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
ifr.ifr_data = (void *)&nwid;
if (ioctl(drv->sock, SIOCG80211NWID, &ifr) < 0 ||
nwid.i_len > IEEE80211_NWID_LEN)
return -1;
memcpy(ssid, nwid.i_nwid, nwid.i_len);
return nwid.i_len;
}
static int
wpa_driver_bsd_set_ssid(void *priv, const char *ssid,
size_t ssid_len)
{
struct wpa_driver_bsd_data *drv = priv;
struct ieee80211_nwid nwid;
struct ifreq ifr;
memcpy(nwid.i_nwid, ssid, ssid_len);
nwid.i_len = ssid_len;
memset(&ifr, 0, sizeof(ifr));
(void)strncpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
ifr.ifr_data = (void *)&nwid;
return ioctl(drv->sock, SIOCS80211NWID, &ifr);
}
static int
wpa_driver_bsd_set_wpa_ie(struct wpa_driver_bsd_data *drv,
const char *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;
memset(&wk, 0, sizeof(wk));
if (addr != NULL &&
bcmp(addr, "\xff\xff\xff\xff\xff\xff", IEEE80211_ADDR_LEN) != 0) {
struct ether_addr ea;
memcpy(&ea, addr, IEEE80211_ADDR_LEN);
wpa_printf(MSG_DEBUG, "%s: addr=%s keyidx=%d",
__func__, ether_ntoa(&ea), key_idx);
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;
}
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;
}
memset(&wk, 0, sizeof(wk));
wk.ik_type = cipher;
wk.ik_flags = IEEE80211_KEY_RECV;
if (set_tx)
wk.ik_flags |= IEEE80211_KEY_XMIT;
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;
if (set_tx)
wk.ik_flags |= IEEE80211_KEY_DEFAULT;
} else
wk.ik_keyix = IEEE80211_KEYIX_NONE;
wk.ik_keylen = key_len;
memcpy(&wk.ik_keyrsc, seq, seq_len);
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__);
memset(&mlme, 0, sizeof(mlme));
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
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__);
memset(&mlme, 0, sizeof(mlme));
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
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__
, params->ssid_len, params->ssid
, 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] == RSN_INFO_ELEM ? 2 : 1) < 0)
return -1;
memset(&mlme, 0, sizeof(mlme));
mlme.im_op = IEEE80211_MLME_ASSOC;
if (params->ssid != NULL)
memcpy(mlme.im_ssid, params->ssid, params->ssid_len);
mlme.im_ssid_len = params->ssid_len;
if (params->bssid != NULL)
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);
}
#include <net/route.h>
#include <net80211/ieee80211_netbsd.h>
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;
}
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));
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;
}
}
/* Compare function for sorting scan results. Return >0 if @b is consider
* better. */
static int
wpa_scan_result_compar(const void *a, const void *b)
{
const struct wpa_scan_result *wa = a;
const struct wpa_scan_result *wb = b;
/* WPA/WPA2 support preferred */
if ((wb->wpa_ie_len || wb->rsn_ie_len) &&
!(wa->wpa_ie_len || wa->rsn_ie_len))
return 1;
if (!(wb->wpa_ie_len || wb->rsn_ie_len) &&
(wa->wpa_ie_len || wa->rsn_ie_len))
return -1;
/* privacy support preferred */
if ((wa->caps & IEEE80211_CAPINFO_PRIVACY) &&
(wb->caps & IEEE80211_CAPINFO_PRIVACY) == 0)
return 1;
if ((wa->caps & IEEE80211_CAPINFO_PRIVACY) == 0 &&
(wb->caps & IEEE80211_CAPINFO_PRIVACY))
return -1;
/* best/max rate preferred if signal level close enough XXX */
if (wa->maxrate != wb->maxrate && abs(wb->level - wa->level) < 5)
return wb->maxrate - wa->maxrate;
/* use freq for channel preference */
/* all things being equal, use signal level */
return wb->level - wa->level;
}
static int
getmaxrate(uint8_t rates[15], uint8_t nrates)
{
int i, maxrate = -1;
for (i = 0; i < nrates; i++) {
int rate = rates[i] & IEEE80211_RATE_VAL;
if (rate > maxrate)
rate = maxrate;
}
return maxrate;
}
/* unalligned little endian access */
#define LE_READ_4(p) \
((u_int32_t) \
((((const u_int8_t *)(p))[0] ) | \
(((const u_int8_t *)(p))[1] << 8) | \
(((const u_int8_t *)(p))[2] << 16) | \
(((const u_int8_t *)(p))[3] << 24)))
static int __inline
iswpaoui(const u_int8_t *frm)
{
return frm[1] > 3 && LE_READ_4(frm+2) == ((WPA_OUI_TYPE<<24)|WPA_OUI);
}
static int
wpa_driver_bsd_get_scan_results(void *priv,
struct wpa_scan_result *results,
size_t max_size)
{
#define min(a,b) ((a)>(b)?(b):(a))
struct wpa_driver_bsd_data *drv = priv;
uint8_t buf[24*1024];
uint8_t *cp, *vp;
struct ieee80211req_scan_result *sr;
struct wpa_scan_result *wsr;
int len, ielen;
memset(results, 0, max_size * sizeof(struct wpa_scan_result));
len = get80211var(drv, IEEE80211_IOC_SCAN_RESULTS, buf, sizeof(buf));
if (len < 0)
return -1;
cp = buf;
wsr = results;
while (len >= sizeof(struct ieee80211req_scan_result)) {
sr = (struct ieee80211req_scan_result *) cp;
memcpy(wsr->bssid, sr->isr_bssid, IEEE80211_ADDR_LEN);
wsr->ssid_len = sr->isr_ssid_len;
wsr->freq = sr->isr_freq;
wsr->noise = sr->isr_noise;
wsr->qual = sr->isr_rssi;
wsr->level = 0; /* XXX? */
wsr->caps = sr->isr_capinfo;
wsr->maxrate = getmaxrate(sr->isr_rates, sr->isr_nrates);
vp = (u_int8_t *)(sr+1);
memcpy(wsr->ssid, vp, sr->isr_ssid_len);
if (sr->isr_ie_len > 0) {
vp += sr->isr_ssid_len;
ielen = sr->isr_ie_len;
while (ielen > 0) {
switch (vp[0]) {
case IEEE80211_ELEMID_VENDOR:
if (!iswpaoui(vp))
break;
wsr->wpa_ie_len =
min(2+vp[1], SSID_MAX_WPA_IE_LEN);
memcpy(wsr->wpa_ie, vp, wsr->wpa_ie_len);
break;
case IEEE80211_ELEMID_RSN:
wsr->rsn_ie_len =
min(2+vp[1], SSID_MAX_WPA_IE_LEN);
memcpy(wsr->rsn_ie, vp, wsr->rsn_ie_len);
break;
}
ielen -= 2+vp[1];
vp += 2+vp[1];
}
}
cp += sr->isr_len, len -= sr->isr_len;
wsr++;
}
qsort(results, wsr - results, sizeof(struct wpa_scan_result),
wpa_scan_result_compar);
wpa_printf(MSG_DEBUG, "Received %d bytes of scan results (%d BSSes)",
len, wsr - results);
return wsr - results;
#undef min
}
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 = malloc(sizeof(*drv));
if (drv == NULL)
return NULL;
memset(drv, 0, sizeof(*drv));
/*
* 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.
* XXXSCW: devd is FreeBSD-specific.
*/
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;
strncpy(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:
free(drv);
return NULL;
#undef GETPARAM
}
static void
wpa_driver_bsd_deinit(void *priv)
{
struct wpa_driver_bsd_data *drv = priv;
int flags;
/* 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 */
free(drv);
}
struct wpa_driver_ops wpa_driver_bsd_ops = {
.name = "bsd",
.desc = "BSD 802.11 support (Atheros, etc.)",
.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_results = wpa_driver_bsd_get_scan_results,
.deauthenticate = wpa_driver_bsd_deauthenticate,
.disassociate = wpa_driver_bsd_disassociate,
.associate = wpa_driver_bsd_associate,
.set_auth_alg = wpa_driver_bsd_set_auth_alg,
};
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