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hostapd: Avoid crashing on station mode disassoc event

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Some driver wrappers may end up indicating a disassociation or
deauthentication event without the address of the station, e.g.,
based on a previous non-AP mode event. Avoid crashing hostapd
by verifying that the require address parameter is available in
the event before processing it.
This commit is contained in:
Jouni Malinen 2010-10-22 17:43:23 +03:00 committed by Jouni Malinen
parent f19858f5a8
commit 83e843e830
1 changed files with 13 additions and 0 deletions
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13
src/ap/drv_callbacks.c
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@ -195,6 +195,19 @@ void hostapd_notif_disassoc(struct hostapd_data *hapd, const u8 *addr)
{
struct sta_info *sta;
if (addr == NULL) {
/*
* This could potentially happen with unexpected event from the
* driver wrapper. This was seen at least in one case where the
* driver ended up reporting a station mode event while hostapd
* was running, so better make sure we stop processing such an
* event here.
*/
wpa_printf(MSG_DEBUG, "hostapd_notif_disassoc: Skip event "
"with no address");
return -1;
}
hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
HOSTAPD_LEVEL_INFO, "disassociated");