C++ (Cpp) wpas_wps_ssid_bss_match Examples

Example #1

File: events.c Project: AhmadTux/DragonFlyBSD

static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
					 struct wpa_ssid *ssid,
					 struct wpa_scan_res *bss)
{
	struct wpa_ie_data ie;
	int proto_match = 0;
	const u8 *rsn_ie, *wpa_ie;
	int ret;

	ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
	if (ret >= 0)
		return ret;

	rsn_ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
	while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
		proto_match++;

		if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
			wpa_printf(MSG_DEBUG, "   skip RSN IE - parse failed");
			break;
		}
		if (!(ie.proto & ssid->proto)) {
			wpa_printf(MSG_DEBUG, "   skip RSN IE - proto "
				   "mismatch");
			break;
		}

		if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
			wpa_printf(MSG_DEBUG, "   skip RSN IE - PTK cipher "
				   "mismatch");
			break;
		}

		if (!(ie.group_cipher & ssid->group_cipher)) {
			wpa_printf(MSG_DEBUG, "   skip RSN IE - GTK cipher "
				   "mismatch");
			break;
		}

		if (!(ie.key_mgmt & ssid->key_mgmt)) {
			wpa_printf(MSG_DEBUG, "   skip RSN IE - key mgmt "
				   "mismatch");
			break;
		}

#ifdef CONFIG_IEEE80211W
		if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
		    ssid->ieee80211w == IEEE80211W_REQUIRED) {
			wpa_printf(MSG_DEBUG, "   skip RSN IE - no mgmt frame "
				   "protection");
			break;
		}
#endif /* CONFIG_IEEE80211W */

		wpa_printf(MSG_DEBUG, "   selected based on RSN IE");
		return 1;
	}

	wpa_ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
	while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
		proto_match++;

		if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
			wpa_printf(MSG_DEBUG, "   skip WPA IE - parse failed");
			break;
		}
		if (!(ie.proto & ssid->proto)) {
			wpa_printf(MSG_DEBUG, "   skip WPA IE - proto "
				   "mismatch");
			break;
		}

		if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
			wpa_printf(MSG_DEBUG, "   skip WPA IE - PTK cipher "
				   "mismatch");
			break;
		}

		if (!(ie.group_cipher & ssid->group_cipher)) {
			wpa_printf(MSG_DEBUG, "   skip WPA IE - GTK cipher "
				   "mismatch");
			break;
		}

		if (!(ie.key_mgmt & ssid->key_mgmt)) {
			wpa_printf(MSG_DEBUG, "   skip WPA IE - key mgmt "
				   "mismatch");
			break;
		}

		wpa_printf(MSG_DEBUG, "   selected based on WPA IE");
		return 1;
	}

	if (proto_match == 0)
		wpa_printf(MSG_DEBUG, "   skip - no WPA/RSN proto match");

	return 0;
}

Example #2

File: events.c Project: AwaisKing/mt6577_aosp_source

static struct wpa_scan_res *
wpa_supplicant_select_bss_open(struct wpa_supplicant *wpa_s,
				  struct wpa_ssid *group,
				  struct wpa_ssid **selected_ssid)
{
	struct wpa_ssid *ssid;
	struct wpa_scan_res *bss;
	size_t i;
	struct wpa_blacklist *e;
	const u8 *ie;

	wpa_printf(MSG_DEBUG, "Try to find OPEN AP");
	for (i = 0; i < wpa_s->scan_res->num; i++) {
		const u8 *ssid_;
		u8 wpa_ie_len, rsn_ie_len, ssid_len;
		bss = wpa_s->scan_res->res[i];

		ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
		ssid_ = ie ? ie + 2 : (u8 *) "";
		ssid_len = ie ? ie[1] : 0;

		ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
		wpa_ie_len = ie ? ie[1] : 0;

		ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
		rsn_ie_len = ie ? ie[1] : 0;

		wpa_printf(MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
			   "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x",
			   (int) i, MAC2STR(bss->bssid),
			   wpa_ssid_txt(ssid_, ssid_len),
			   wpa_ie_len, rsn_ie_len, bss->caps);

		e = wpa_blacklist_get(wpa_s, bss->bssid);
		if (e && e->count > 1) {
			wpa_printf(MSG_DEBUG, "   skip - blacklisted");
			continue;
		}

		if (ssid_len == 0) {
			wpa_printf(MSG_DEBUG, "   skip - SSID not known");
			continue;
		}

		for (ssid = group; ssid; ssid = ssid->pnext) {
			int check_ssid = ssid->ssid_len != 0;

			if (ssid->disabled) {
				wpa_printf(MSG_DEBUG, "   skip - disabled");
				continue;
			}

#ifdef CONFIG_WPS
			if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
				/* Only allow wildcard SSID match if an AP
				 * advertises active WPS operation that matches
				 * with our mode. */
				check_ssid = 1;
				if (ssid->ssid_len == 0 &&
				    wpas_wps_ssid_wildcard_ok(wpa_s, ssid,
							      bss))
					check_ssid = 0;
			}
#endif /* CONFIG_WPS */

			if (check_ssid &&
			    (ssid_len != ssid->ssid_len ||
			     os_memcmp(ssid_, ssid->ssid, ssid_len) != 0)) {
				wpa_printf(MSG_DEBUG, "   skip - "
					   "SSID mismatch");
				continue;
			}

			if (ssid->bssid_set &&
			    os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0)
			{
				wpa_printf(MSG_DEBUG, "   skip - "
					   "BSSID mismatch");
				continue;
			}

			/* Fix 5.1.7 WPS test case */
			if (wpas_wps_ssid_bss_match(wpa_s, ssid, bss) == 0) {
				continue;
			}

			if (!(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
			    !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
			    !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA))
			{
				wpa_printf(MSG_DEBUG, "   skip - "
					   "non-WPA network not allowed");
				continue;
			}

			if ((ssid->key_mgmt &
			     (WPA_KEY_MGMT_IEEE8021X | WPA_KEY_MGMT_PSK |
			      WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_FT_PSK |
			      WPA_KEY_MGMT_IEEE8021X_SHA256 |
			      WPA_KEY_MGMT_PSK_SHA256)) ||
			    (wpa_ie_len != 0 || rsn_ie_len != 0)) {
				wpa_printf(MSG_DEBUG, "   skip - "
					   "WPA network");
				continue;
			}

			if (bss->caps & IEEE80211_CAP_PRIVACY || !wpa_supplicant_match_privacy(bss, ssid)) {
				wpa_printf(MSG_DEBUG, "   skip - "
					   "privacy mismatch");
				continue;
			}

			if (bss->caps & IEEE80211_CAP_IBSS) {
				wpa_printf(MSG_DEBUG, "   skip - "
					   "IBSS (adhoc) network");
				continue;
			}

			wpa_printf(MSG_DEBUG, "   selected non-WPA AP "
				   MACSTR " ssid='%s'",
				   MAC2STR(bss->bssid),
				   wpa_ssid_txt(ssid_, ssid_len));
			*selected_ssid = ssid;
			return bss;
		}
	}

	return NULL;
}