DPP: Add DPP_LISTEN and DPP_STOP_LISTEN to hostapd

This is an initial step in allowing non-operating channel operations
with DPP when hostapd is the Responder. For now, this is only used for
specifying role=configurator/enrollee and qr=mutual cases similarly to
the wpa_supplicant configuration for in Responder role. Request to use a
non-operating channel will be rejected.

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

hostapd/ctrl_iface.c

@@ -3018,6 +3018,11 @@ static int hostapd_ctrl_iface_receive_process(struct hostapd_data *hapd,
 	} else if (os_strncmp(buf, "DPP_AUTH_INIT ", 14) == 0) {
 		if (hostapd_dpp_auth_init(hapd, buf + 13) < 0)
 			reply_len = -1;
+	} else if (os_strncmp(buf, "DPP_LISTEN ", 11) == 0) {
+		if (hostapd_dpp_listen(hapd, buf + 11) < 0)
+			reply_len = -1;
+	} else if (os_strcmp(buf, "DPP_STOP_LISTEN") == 0) {
+		hostapd_dpp_listen_stop(hapd);
 	} else if (os_strncmp(buf, "DPP_CONFIGURATOR_ADD", 20) == 0) {
 		res = hostapd_dpp_configurator_add(hapd, buf + 20);
 		if (res < 0) {

src/ap/dpp_hostapd.c

@@ -543,6 +543,41 @@ fail:
 }
 
 
+int hostapd_dpp_listen(struct hostapd_data *hapd, const char *cmd)
+{
+	int freq;
+
+	freq = atoi(cmd);
+	if (freq <= 0)
+		return -1;
+
+	if (os_strstr(cmd, " role=configurator"))
+		hapd->dpp_allowed_roles = DPP_CAPAB_CONFIGURATOR;
+	else if (os_strstr(cmd, " role=enrollee"))
+		hapd->dpp_allowed_roles = DPP_CAPAB_ENROLLEE;
+	else
+		hapd->dpp_allowed_roles = DPP_CAPAB_CONFIGURATOR |
+			DPP_CAPAB_ENROLLEE;
+	hapd->dpp_qr_mutual = os_strstr(cmd, " qr=mutual") != NULL;
+
+	if (freq != hapd->iface->freq && hapd->iface->freq > 0) {
+		/* TODO: Listen operation on non-operating channel */
+		wpa_printf(MSG_INFO,
+			   "DPP: Listen operation on non-operating channel (%d MHz) is not yet supported (operating channel: %d MHz)",
+			   freq, hapd->iface->freq);
+		return -1;
+	}
+
+	return 0;
+}
+
+
+void hostapd_dpp_listen_stop(struct hostapd_data *hapd)
+{
+	/* TODO: Stop listen operation on non-operating channel */
+}
+
+
 static void hostapd_dpp_rx_auth_req(struct hostapd_data *hapd, const u8 *src,
 				    const u8 *hdr, const u8 *buf, size_t len,
 				    unsigned int freq)

src/ap/dpp_hostapd.h

@@ -17,6 +17,8 @@ const char * hostapd_dpp_bootstrap_get_uri(struct hostapd_data *hapd,
 int hostapd_dpp_bootstrap_info(struct hostapd_data *hapd, int id,
 			       char *reply, int reply_size);
 int hostapd_dpp_auth_init(struct hostapd_data *hapd, const char *cmd);
+int hostapd_dpp_listen(struct hostapd_data *hapd, const char *cmd);
+void hostapd_dpp_listen_stop(struct hostapd_data *hapd);
 void hostapd_dpp_rx_action(struct hostapd_data *hapd, const u8 *src,
 			   const u8 *buf, size_t len, unsigned int freq);
 void hostapd_dpp_tx_status(struct hostapd_data *hapd, const u8 *dst,