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) {
/* NB: don't whinge if device ejected or equivalent */
if (errno != ENXIO)
wpa_printf(MSG_DEBUG, "%s: failed to restore roaming "
"state", __func__);
}
if (drv->drivercaps & IEEE80211_C_BGSCAN) {
/* XXX check return value */
(void) set80211param(drv, IEEE80211_IOC_SCANVALID,
drv->prev_scanvalid);
}
(void) close(drv->route); /* ioctl socket */
(void) close(drv->sock); /* event socket */
free(drv);
}
const char *
getifinfo(prop_dictionary_t env, prop_dictionary_t oenv, unsigned short *flagsp)
{
if (getifflags(env, oenv, flagsp) == -1)
return NULL;
return getifname(env);
}
static int
wpa_driver_bsd_scan(void *priv, const u8 *ssid, size_t ssid_len)
{
struct wpa_driver_bsd_data *drv = priv;
struct ieee80211_scan_req sr;
int flags;
/* XXX not true but easiest to perpetuate the myth */
/* NB: interface must be marked UP to do a scan */
if (getifflags(drv, &flags) != 0) {
wpa_printf(MSG_DEBUG, "%s did not mark interface UP", __func__);
return -1;
}
if ((flags & IFF_UP) == 0 && setifflags(drv, flags | IFF_UP) != 0) {
wpa_printf(MSG_DEBUG, "%s unable to mark interface UP",
__func__);
return -1;
}
memset(&sr, 0, sizeof(sr));
sr.sr_flags = IEEE80211_IOC_SCAN_ACTIVE
| IEEE80211_IOC_SCAN_ONCE
| IEEE80211_IOC_SCAN_NOJOIN
;
sr.sr_duration = IEEE80211_IOC_SCAN_FOREVER;
if (ssid_len != 0) {
/* XXX ssid_len must be <= IEEE80211_NWID_LEN */
memcpy(sr.sr_ssid[sr.sr_nssid].ssid, ssid, ssid_len);
sr.sr_ssid[sr.sr_nssid].len = ssid_len;
sr.sr_nssid++;
}
if (drv->lastssid_len != 0 &&
(drv->lastssid_len != ssid_len ||
memcmp(drv->lastssid, ssid, ssid_len) != 0)) {
/*
* If we are scanning because we received a deauth
* and the scan cache is warm then we'll find the
* ap there and short circuit a full-blown scan.
*/
memcpy(sr.sr_ssid[sr.sr_nssid].ssid, drv->lastssid,
drv->lastssid_len);
sr.sr_ssid[sr.sr_nssid].len = drv->lastssid_len;
sr.sr_nssid++;
/* NB: clear so we don't retry w/o associating first */
drv->lastssid_len = 0;
}
if (sr.sr_nssid != 0) /* NB: check scan cache first */
sr.sr_flags |= IEEE80211_IOC_SCAN_CHECK;
/* NB: net80211 delivers a scan complete event so no need to poll */
return set80211var(drv, IEEE80211_IOC_SCAN_REQ, &sr, sizeof(sr));
}
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_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);
}
static void *
wpa_driver_bsd_init(void *ctx, const char *ifname)
{
struct wpa_driver_bsd_data *drv;
struct ieee80211_devcaps_req devcaps;
int flags;
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.
*/
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->ctx = ctx;
strncpy(drv->ifname, ifname, sizeof(drv->ifname));
/*
* Mark the interface as down to ensure wpa_supplicant has exclusive
* access to the net80211 state machine, do this before opening the
* route socket to avoid a false event that the interface disappeared.
*/
if (getifflags(drv, &flags) == 0)
(void) setifflags(drv, flags &~ IFF_UP);
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);
if (get80211var(drv, IEEE80211_IOC_DEVCAPS, &devcaps, sizeof(devcaps)) < 0) {
wpa_printf(MSG_DEBUG,
"%s: failed to get device capabilities: %s",
__func__, strerror(errno));
goto fail;
}
drv->drivercaps = devcaps.dc_drivercaps;
drv->cryptocaps = devcaps.dc_cryptocaps;
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 (drv->drivercaps & IEEE80211_C_BGSCAN) {
/*
* Driver does background scanning; force the scan valid
* setting to 1.5 x bg scan interval so the scan cache is
* always consulted before we force a foreground scan.
*/
if (setscanvalid(drv) < 0) {
wpa_printf(MSG_DEBUG,
"%s: warning, failed to set scanvalid, scanning "
"may be suboptimal: %s", __func__, strerror(errno));
}
}
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;
}
