WPS: Add support for NFC handover select generation with wpa_supplicant

When wpa_supplicant is controlling an AP mode interface, it can generate
the alternative carrier record for NFC connection handover select
message similarly to the way this is done in hostapd.

Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>

wpa_supplicant/ap.c

@@ -860,6 +860,18 @@ struct wpabuf * wpas_ap_wps_nfc_config_token(struct wpa_supplicant *wpa_s,
 	return hostapd_wps_nfc_config_token(hapd, ndef);
 }
 
+
+struct wpabuf * wpas_ap_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s,
+					     int ndef)
+{
+	struct hostapd_data *hapd;
+
+	if (wpa_s->ap_iface == NULL)
+		return NULL;
+	hapd = wpa_s->ap_iface->bss[0];
+	return hostapd_wps_nfc_hs_cr(hapd, ndef);
+}
+
 #endif /* CONFIG_WPS */
 
 

wpa_supplicant/ap.h

@@ -54,5 +54,7 @@ void wpas_ap_ch_switch(struct wpa_supplicant *wpa_s, int freq, int ht,
 		       int offset);
 struct wpabuf * wpas_ap_wps_nfc_config_token(struct wpa_supplicant *wpa_s,
 					     int ndef);
+struct wpabuf * wpas_ap_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s,
+					     int ndef);
 
 #endif /* AP_H */

wpa_supplicant/ctrl_iface.c

@@ -909,12 +909,13 @@ static int wpas_ctrl_nfc_get_handover_req(struct wpa_supplicant *wpa_s,
 
 
 static int wpas_ctrl_nfc_get_handover_sel_wps(struct wpa_supplicant *wpa_s,
-					      char *reply, size_t max_len)
+					      char *reply, size_t max_len,
+					      int ndef, int cr)
 {
 	struct wpabuf *buf;
 	int res;
 
-	buf = wpas_wps_nfc_handover_sel(wpa_s);
+	buf = wpas_wps_nfc_handover_sel(wpa_s, ndef, cr);
 	if (buf == NULL)
 		return -1;
 
@@ -934,18 +935,24 @@ static int wpas_ctrl_nfc_get_handover_sel(struct wpa_supplicant *wpa_s,
 					  size_t max_len)
 {
 	char *pos;
+	int ndef;
 
 	pos = os_strchr(cmd, ' ');
 	if (pos == NULL)
 		return -1;
 	*pos++ = '\0';
 
-	if (os_strcmp(cmd, "NDEF") != 0)
+	if (os_strcmp(cmd, "WPS") == 0)
+		ndef = 0;
+	else if (os_strcmp(cmd, "NDEF") == 0)
+		ndef = 1;
+	else
 		return -1;
 
-	if (os_strcmp(pos, "WPS") == 0) {
-		return wpas_ctrl_nfc_get_handover_sel_wps(wpa_s, reply,
-							  max_len);
+	if (os_strcmp(pos, "WPS") == 0 || os_strcmp(pos, "WPS-CR") == 0) {
+		return wpas_ctrl_nfc_get_handover_sel_wps(
+			wpa_s, reply, max_len, ndef,
+			os_strcmp(pos, "WPS-CR") == 0);
 	}
 
 	return -1;

wpa_supplicant/wps_supplicant.c

@@ -2003,9 +2003,12 @@ struct wpabuf * wpas_wps_nfc_handover_req(struct wpa_supplicant *wpa_s, int cr)
 }
 
 
-struct wpabuf * wpas_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s)
+struct wpabuf * wpas_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s,
+					  int ndef, int cr)
 {
-	return NULL;
+	if (!cr)
+		return NULL;
+	return wpas_ap_wps_nfc_handover_sel(wpa_s, ndef);
 }
 
 

wpa_supplicant/wps_supplicant.h

@@ -69,7 +69,8 @@ int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *bssid);
 int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s,
 			  const struct wpabuf *data);
 struct wpabuf * wpas_wps_nfc_handover_req(struct wpa_supplicant *wpa_s, int cr);
-struct wpabuf * wpas_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s);
+struct wpabuf * wpas_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s,
+					  int ndef, int cr);
 int wpas_wps_nfc_rx_handover_req(struct wpa_supplicant *wpa_s,
 				 const struct wpabuf *data);
 int wpas_wps_nfc_rx_handover_sel(struct wpa_supplicant *wpa_s,