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don't respond to probe requests with wildcard SSID's when running a hidden ssid

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A hidden ssid should not be reveal to probe request wirh wildcard SSId'.
Only probe request for our hidden ssid should be answered.
This commit is contained in:
Andreas Schultz
2016-04-04 08:26:33 +02:00
parent 5d69226ace
commit ca74624d96
1 changed files with 19 additions and 2 deletions
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21
src/wtp/binding/ieee80211/wifi_drivers.c
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@ -440,19 +440,36 @@ static void wifi_wlan_receive_station_mgmt_probe_request(struct wifi_wlan* wlan,
} }
/* Parsing Information Elements */ /* Parsing Information Elements */
if (ieee80211_retrieve_information_elements_position(&ieitems, &frame->proberequest.ie[0], ielength)) { if (ieee80211_retrieve_information_elements_position(&ieitems,
&frame->proberequest.ie[0],
ielength)) {
log_printf(LOG_DEBUG, "Could not parse ProbeReq from " MACSTR, MAC2STR(frame->sa));
return; return;
} }
/* Validate Probe Request Packet */ /* Validate Probe Request Packet */
if (!ieitems.ssid || !ieitems.supported_rates) { if (!ieitems.ssid || !ieitems.supported_rates) {
log_printf(LOG_DEBUG, "STA " MACSTR " sent probe request "
"without SSID or supported rates element", MAC2STR(frame->sa));
return; return;
} }
/* Verify the SSID */ /* Verify the SSID */
ssidcheck = ieee80211_is_valid_ssid(wlan->ssid, ieitems.ssid, ieitems.ssid_list); ssidcheck = ieee80211_is_valid_ssid(wlan->ssid, ieitems.ssid, ieitems.ssid_list);
if (ssidcheck == IEEE80211_WRONG_SSID) { switch (ssidcheck) {
case IEEE80211_WRONG_SSID:
return; return;
case IEEE80211_WILDCARD_SSID:
if (wlan->ssid_hidden) {
log_printf(LOG_DEBUG, "Probe Request from " MACSTR " for "
"broadcast SSID ignored", MAC2STR(frame->sa));
return;
}
break;
default:
break;
} }
/* Create probe response */ /* Create probe response */