WPS: Move from WLAN_STA_MAYBE_WPS to WLAN_STA_WPS based on EAP messages

If the station does not include WSC IE in Association Request, it
is marked with WLAN_STA_MAYBE_WPS flag. We can update that to
WLAN_STA_WPS if the station uses either of the WPS identity strings.
This enables some workarounds for WPS stations.

src/ap/ieee802_1x.c

@@ -23,6 +23,7 @@
 #include "radius/radius.h"
 #include "radius/radius_client.h"
 #include "eap_server/eap.h"
+#include "eap_common/eap_wsc_common.h"
 #include "eapol_auth/eapol_auth_sm.h"
 #include "eapol_auth/eapol_auth_sm_i.h"
 #include "hostapd.h"
@@ -1455,6 +1456,30 @@ static void ieee802_1x_rekey(void *eloop_ctx, void *timeout_ctx)
 static void ieee802_1x_eapol_send(void *ctx, void *sta_ctx, u8 type,
 				  const u8 *data, size_t datalen)
 {
+#ifdef CONFIG_WPS
+	struct sta_info *sta = sta_ctx;
+
+	if ((sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)) ==
+	    WLAN_STA_MAYBE_WPS) {
+		const u8 *identity;
+		size_t identity_len;
+		struct eapol_state_machine *sm = sta->eapol_sm;
+
+		identity = eap_get_identity(sm->eap, &identity_len);
+		if (identity &&
+		    ((identity_len == WSC_ID_ENROLLEE_LEN &&
+		      os_memcmp(identity, WSC_ID_ENROLLEE,
+				WSC_ID_ENROLLEE_LEN) == 0) ||
+		     (identity_len == WSC_ID_REGISTRAR_LEN &&
+		      os_memcmp(identity, WSC_ID_REGISTRAR,
+				WSC_ID_REGISTRAR_LEN) == 0))) {
+			wpa_printf(MSG_DEBUG, "WPS: WLAN_STA_MAYBE_WPS -> "
+				   "WLAN_STA_WPS");
+			sta->flags |= WLAN_STA_WPS;
+		}
+	}
+#endif /* CONFIG_WPS */
+
 	ieee802_1x_send(ctx, sta_ctx, type, data, datalen);
 }