D-Bus: Fix operations when P2P management interface is used

Commit 21efc940f6 ('wpa_supplicant: Do not
register a P2P management interface on DBus') hides the special P2P
management interface from D-Bus. However, it did not take into account
the possibility of wpa_s->dbus_path and wpa_s->dbus_new_path being NULL
in such cases on number of code paths within the D-Bus handlers. This
could result in invalid arguments (NULL path) being provided to D-Bus
functions (mainly, dbus_message_iter_append_basic) and NULL pointer
dereference when iterating over all interfaces. Either of these could
make wpa_supplicant process terminate.

Fix this by explicitly checking that the interface-specific D-Bus path
has been registered before using it anywhere with D-Bus handlers. In
addition, find the correct wpa_s instance to fix P2P operations through
D-Bus when the P2P Device interface is used.

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

wpa_supplicant/dbus/dbus_new.c

@@ -137,7 +137,7 @@ static void wpas_dbus_signal_interface(struct wpa_supplicant *wpa_s,
 	iface = wpa_s->global->dbus;
 
 	/* Do nothing if the control interface is not turned on */
-	if (iface == NULL)
+	if (iface == NULL || !wpa_s->dbus_new_path)
 		return;
 
 	msg = dbus_message_new_signal(WPAS_DBUS_NEW_PATH,
@@ -200,7 +200,7 @@ void wpas_dbus_signal_scan_done(struct wpa_supplicant *wpa_s, int success)
 	iface = wpa_s->global->dbus;
 
 	/* Do nothing if the control interface is not turned on */
-	if (iface == NULL)
+	if (iface == NULL || !wpa_s->dbus_new_path)
 		return;
 
 	msg = dbus_message_new_signal(wpa_s->dbus_new_path,
@@ -239,7 +239,7 @@ static void wpas_dbus_signal_bss(struct wpa_supplicant *wpa_s,
 	iface = wpa_s->global->dbus;
 
 	/* Do nothing if the control interface is not turned on */
-	if (iface == NULL)
+	if (iface == NULL || !wpa_s->dbus_new_path)
 		return;
 
 	msg = dbus_message_new_signal(wpa_s->dbus_new_path,
@@ -307,7 +307,7 @@ static void wpas_dbus_signal_blob(struct wpa_supplicant *wpa_s,
 	iface = wpa_s->global->dbus;
 
 	/* Do nothing if the control interface is not turned on */
-	if (iface == NULL)
+	if (iface == NULL || !wpa_s->dbus_new_path)
 		return;
 
 	msg = dbus_message_new_signal(wpa_s->dbus_new_path,
@@ -374,7 +374,7 @@ static void wpas_dbus_signal_network(struct wpa_supplicant *wpa_s,
 	iface = wpa_s->global->dbus;
 
 	/* Do nothing if the control interface is not turned on */
-	if (iface == NULL)
+	if (iface == NULL || !wpa_s->dbus_new_path)
 		return;
 
 	os_snprintf(net_obj_path, WPAS_DBUS_OBJECT_PATH_MAX,
@@ -467,7 +467,7 @@ void wpas_dbus_signal_network_request(struct wpa_supplicant *wpa_s,
 	iface = wpa_s->global->dbus;
 
 	/* Do nothing if the control interface is not turned on */
-	if (iface == NULL)
+	if (iface == NULL || !wpa_s->dbus_new_path)
 		return;
 
 	field = wpa_supplicant_ctrl_req_to_string(rtype, default_txt, &txt);
@@ -511,6 +511,8 @@ void wpas_dbus_signal_network_enabled_changed(struct wpa_supplicant *wpa_s,
 
 	char path[WPAS_DBUS_OBJECT_PATH_MAX];
 
+	if (!wpa_s->dbus_new_path)
+		return;
 	os_snprintf(path, WPAS_DBUS_OBJECT_PATH_MAX,
 		    "%s/" WPAS_DBUS_NEW_NETWORKS_PART "/%d",
 		    wpa_s->dbus_new_path, ssid->id);
@@ -539,7 +541,7 @@ void wpas_dbus_signal_wps_event_success(struct wpa_supplicant *wpa_s)
 	iface = wpa_s->global->dbus;
 
 	/* Do nothing if the control interface is not turned on */
-	if (iface == NULL)
+	if (iface == NULL || !wpa_s->dbus_new_path)
 		return;
 
 	msg = dbus_message_new_signal(wpa_s->dbus_new_path,
@@ -579,7 +581,7 @@ void wpas_dbus_signal_wps_event_fail(struct wpa_supplicant *wpa_s,
 	iface = wpa_s->global->dbus;
 
 	/* Do nothing if the control interface is not turned on */
-	if (iface == NULL)
+	if (iface == NULL || !wpa_s->dbus_new_path)
 		return;
 
 	msg = dbus_message_new_signal(wpa_s->dbus_new_path,
@@ -620,7 +622,7 @@ void wpas_dbus_signal_wps_event_m2d(struct wpa_supplicant *wpa_s,
 	iface = wpa_s->global->dbus;
 
 	/* Do nothing if the control interface is not turned on */
-	if (iface == NULL)
+	if (iface == NULL || !wpa_s->dbus_new_path)
 		return;
 
 	msg = dbus_message_new_signal(wpa_s->dbus_new_path,
@@ -686,7 +688,7 @@ void wpas_dbus_signal_wps_cred(struct wpa_supplicant *wpa_s,
 	iface = wpa_s->global->dbus;
 
 	/* Do nothing if the control interface is not turned on */
-	if (iface == NULL)
+	if (iface == NULL || !wpa_s->dbus_new_path)
 		return;
 
 	msg = dbus_message_new_signal(wpa_s->dbus_new_path,
@@ -760,7 +762,7 @@ void wpas_dbus_signal_certification(struct wpa_supplicant *wpa_s,
 	iface = wpa_s->global->dbus;
 
 	/* Do nothing if the control interface is not turned on */
-	if (iface == NULL)
+	if (iface == NULL || !wpa_s->dbus_new_path)
 		return;
 
 	msg = dbus_message_new_signal(wpa_s->dbus_new_path,
@@ -801,7 +803,7 @@ void wpas_dbus_signal_eap_status(struct wpa_supplicant *wpa_s,
 	iface = wpa_s->global->dbus;
 
 	/* Do nothing if the control interface is not turned on */
-	if (iface == NULL)
+	if (iface == NULL || !wpa_s->dbus_new_path)
 		return;
 
 	msg = dbus_message_new_signal(wpa_s->dbus_new_path,
@@ -844,7 +846,7 @@ static void wpas_dbus_signal_sta(struct wpa_supplicant *wpa_s,
 	iface = wpa_s->global->dbus;
 
 	/* Do nothing if the control interface is not turned on */
-	if (iface == NULL)
+	if (iface == NULL || !wpa_s->dbus_new_path)
 		return;
 
 	msg = dbus_message_new_signal(wpa_s->dbus_new_path,
@@ -916,7 +918,8 @@ void wpas_dbus_signal_p2p_group_removed(struct wpa_supplicant *wpa_s,
 	if (parent->p2p_mgmt)
 		parent = parent->parent;
 
-	if (!wpa_s->dbus_groupobj_path)
+	if (!wpa_s->dbus_groupobj_path || !wpa_s->dbus_new_path ||
+	    !parent->dbus_new_path)
 		return;
 
 	msg = dbus_message_new_signal(parent->dbus_new_path,
@@ -984,6 +987,8 @@ void wpas_dbus_signal_p2p_provision_discovery(struct wpa_supplicant *wpa_s,
 
 	if (wpa_s->p2p_mgmt)
 		wpa_s = wpa_s->parent;
+	if (!wpa_s->dbus_new_path)
+		return;
 
 	if (request || !status) {
 		if (config_methods & WPS_CONFIG_DISPLAY)
@@ -1073,6 +1078,8 @@ void wpas_dbus_signal_p2p_go_neg_req(struct wpa_supplicant *wpa_s,
 
 	if (wpa_s->p2p_mgmt)
 		wpa_s = wpa_s->parent;
+	if (!wpa_s->dbus_new_path)
+		return;
 
 	os_snprintf(peer_obj_path, WPAS_DBUS_OBJECT_PATH_MAX,
 		    "%s/" WPAS_DBUS_NEW_P2P_PEERS_PART "/" COMPACT_MACSTR,
@@ -1105,7 +1112,8 @@ static int wpas_dbus_get_group_obj_path(struct wpa_supplicant *wpa_s,
 {
 	char group_name[3];
 
-	if (os_memcmp(ssid->ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN))
+	if (!wpa_s->dbus_new_path ||
+	    os_memcmp(ssid->ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN))
 		return -1;
 
 	os_memcpy(group_name, ssid->ssid + P2P_WILDCARD_SSID_LEN, 2);
@@ -1209,7 +1217,7 @@ void wpas_dbus_signal_p2p_group_started(struct wpa_supplicant *wpa_s,
 	iface = parent->global->dbus;
 
 	/* Do nothing if the control interface is not turned on */
-	if (iface == NULL)
+	if (iface == NULL || !parent->dbus_new_path || !wpa_s->dbus_new_path)
 		return;
 
 	if (wpa_s->dbus_groupobj_path == NULL)
@@ -1272,7 +1280,7 @@ void wpas_dbus_signal_p2p_go_neg_resp(struct wpa_supplicant *wpa_s,
 
 	os_memset(freqs, 0, sizeof(freqs));
 	/* Do nothing if the control interface is not turned on */
-	if (iface == NULL)
+	if (iface == NULL || !wpa_s->dbus_new_path)
 		return;
 
 	os_snprintf(peer_obj_path, WPAS_DBUS_OBJECT_PATH_MAX,
@@ -1386,6 +1394,8 @@ void wpas_dbus_signal_p2p_invitation_result(struct wpa_supplicant *wpa_s,
 
 	if (wpa_s->p2p_mgmt)
 		wpa_s = wpa_s->parent;
+	if (!wpa_s->dbus_new_path)
+		return;
 
 	msg = dbus_message_new_signal(wpa_s->dbus_new_path,
 				      WPAS_DBUS_NEW_IFACE_P2PDEVICE,
@@ -1439,6 +1449,8 @@ void wpas_dbus_signal_p2p_peer_joined(struct wpa_supplicant *wpa_s,
 	parent = wpa_s->parent;
 	if (parent->p2p_mgmt)
 		parent = parent->parent;
+	if (!parent->dbus_new_path)
+		return;
 
 	os_snprintf(peer_obj_path, WPAS_DBUS_OBJECT_PATH_MAX,
 			"%s/" WPAS_DBUS_NEW_P2P_PEERS_PART "/"
@@ -1494,6 +1506,8 @@ void wpas_dbus_signal_p2p_peer_disconnected(struct wpa_supplicant *wpa_s,
 	parent = wpa_s->parent;
 	if (parent->p2p_mgmt)
 		parent = parent->parent;
+	if (!parent->dbus_new_path)
+		return;
 
 	os_snprintf(peer_obj_path, WPAS_DBUS_OBJECT_PATH_MAX,
 			"%s/" WPAS_DBUS_NEW_P2P_PEERS_PART "/"
@@ -1551,6 +1565,8 @@ void wpas_dbus_signal_p2p_sd_request(struct wpa_supplicant *wpa_s,
 
 	if (wpa_s->p2p_mgmt)
 		wpa_s = wpa_s->parent;
+	if (!wpa_s->dbus_new_path)
+		return;
 
 	/* Check if this is a known peer */
 	if (!p2p_peer_known(wpa_s->global->p2p, sa))
@@ -1617,6 +1633,8 @@ void wpas_dbus_signal_p2p_sd_response(struct wpa_supplicant *wpa_s,
 
 	if (wpa_s->p2p_mgmt)
 		wpa_s = wpa_s->parent;
+	if (!wpa_s->dbus_new_path)
+		return;
 
 	/* Check if this is a known peer */
 	if (!p2p_peer_known(wpa_s->global->p2p, sa))
@@ -1678,6 +1696,8 @@ static void wpas_dbus_signal_persistent_group(struct wpa_supplicant *wpa_s,
 
 	if (wpa_s->p2p_mgmt)
 		wpa_s = wpa_s->parent;
+	if (!wpa_s->dbus_new_path)
+		return;
 
 	os_snprintf(pgrp_obj_path, WPAS_DBUS_OBJECT_PATH_MAX,
 		    "%s/" WPAS_DBUS_NEW_PERSISTENT_GROUPS_PART "/%u",
@@ -1762,6 +1782,8 @@ void wpas_dbus_signal_p2p_wps_failed(struct wpa_supplicant *wpa_s,
 	if (wpa_s->p2p_mgmt)
 		wpa_s = wpa_s->parent;
 
+	if (!wpa_s->dbus_new_path)
+		return;
 	msg = dbus_message_new_signal(wpa_s->dbus_new_path,
 				      WPAS_DBUS_NEW_IFACE_P2PDEVICE,
 				      "WpsFailed");
@@ -1862,6 +1884,9 @@ void wpas_dbus_bss_signal_prop_changed(struct wpa_supplicant *wpa_s,
 	char path[WPAS_DBUS_OBJECT_PATH_MAX];
 	char *prop;
 
+	if (!wpa_s->dbus_new_path)
+		return;
+
 	switch (property) {
 	case WPAS_DBUS_BSS_PROP_SIGNAL:
 		prop = "Signal";
@@ -2177,7 +2202,7 @@ int wpas_dbus_register_network(struct wpa_supplicant *wpa_s,
 #endif /* CONFIG_P2P */
 
 	/* Do nothing if the control interface is not turned on */
-	if (wpa_s == NULL || wpa_s->global == NULL)
+	if (wpa_s == NULL || wpa_s->global == NULL || !wpa_s->dbus_new_path)
 		return 0;
 	ctrl_iface = wpa_s->global->dbus;
 	if (ctrl_iface == NULL)
@@ -2351,7 +2376,7 @@ int wpas_dbus_unregister_bss(struct wpa_supplicant *wpa_s,
 	char bss_obj_path[WPAS_DBUS_OBJECT_PATH_MAX];
 
 	/* Do nothing if the control interface is not turned on */
-	if (wpa_s == NULL || wpa_s->global == NULL)
+	if (wpa_s == NULL || wpa_s->global == NULL || !wpa_s->dbus_new_path)
 		return 0;
 	ctrl_iface = wpa_s->global->dbus;
 	if (ctrl_iface == NULL)
@@ -2394,7 +2419,7 @@ int wpas_dbus_register_bss(struct wpa_supplicant *wpa_s,
 	struct bss_handler_args *arg;
 
 	/* Do nothing if the control interface is not turned on */
-	if (wpa_s == NULL || wpa_s->global == NULL)
+	if (wpa_s == NULL || wpa_s->global == NULL || !wpa_s->dbus_new_path)
 		return 0;
 	ctrl_iface = wpa_s->global->dbus;
 	if (ctrl_iface == NULL)
@@ -3345,7 +3370,7 @@ static void wpas_dbus_signal_peer(struct wpa_supplicant *wpa_s,
 	iface = wpa_s->global->dbus;
 
 	/* Do nothing if the control interface is not turned on */
-	if (iface == NULL)
+	if (iface == NULL || !wpa_s->dbus_new_path)
 		return;
 
 	os_snprintf(peer_obj_path, WPAS_DBUS_OBJECT_PATH_MAX,
@@ -3422,8 +3447,9 @@ int wpas_dbus_register_peer(struct wpa_supplicant *wpa_s, const u8 *dev_addr)
 	if (ctrl_iface == NULL)
 		return 0;
 
-	if (wpa_s->p2p_mgmt)
+	wpa_s = wpa_s->parent->parent;
-		wpa_s = wpa_s->parent;
+	if (!wpa_s->dbus_new_path)
+		return 0;
 
 	os_snprintf(peer_obj_path, WPAS_DBUS_OBJECT_PATH_MAX,
 		    "%s/" WPAS_DBUS_NEW_P2P_PEERS_PART "/" COMPACT_MACSTR,
@@ -3481,12 +3507,12 @@ int wpas_dbus_unregister_peer(struct wpa_supplicant *wpa_s,
 	int ret;
 
 	/* Do nothing if the control interface is not turned on */
-	if (wpa_s == NULL || wpa_s->global == NULL ||
+	if (wpa_s == NULL || wpa_s->global == NULL)
-	    wpa_s->dbus_new_path == NULL)
 		return 0;
 
-	if (wpa_s->p2p_mgmt)
+	wpa_s = wpa_s->parent->parent;
-		wpa_s = wpa_s->parent;
+	if (!wpa_s->dbus_new_path)
+		return 0;
 
 	ctrl_iface = wpa_s->global->dbus;
 	if (ctrl_iface == NULL)
@@ -3512,6 +3538,8 @@ void wpas_dbus_signal_peer_groups_changed(struct wpa_supplicant *wpa_s,
 	if (wpa_s->p2p_mgmt)
 		wpa_s = wpa_s->parent;
 
+	if (!wpa_s->dbus_new_path)
+		return;
 	os_snprintf(peer_obj_path, WPAS_DBUS_OBJECT_PATH_MAX,
 		    "%s/" WPAS_DBUS_NEW_P2P_PEERS_PART "/" COMPACT_MACSTR,
 		    wpa_s->dbus_new_path, MAC2STR(dev_addr));
@@ -3713,6 +3741,9 @@ int wpas_dbus_register_persistent_group(struct wpa_supplicant *wpa_s,
 	/* Do nothing if the control interface is not turned on */
 	if (wpa_s == NULL || wpa_s->global == NULL)
 		return 0;
+	wpa_s = wpa_s->parent->parent;
+	if (!wpa_s->dbus_new_path)
+		return 0;
 
 	/* Make sure ssid is a persistent group */
 	if (ssid->disabled != 2 && !ssid->p2p_persistent_group)
@@ -3797,15 +3828,13 @@ int wpas_dbus_unregister_persistent_group(struct wpa_supplicant *wpa_s,
 	int ret;
 
 	/* Do nothing if the control interface is not turned on */
-	if (wpa_s == NULL || wpa_s->global == NULL ||
+	if (wpa_s == NULL || wpa_s->global == NULL)
-	    wpa_s->dbus_new_path == NULL)
 		return 0;
 
-	if (wpa_s->p2p_mgmt)
+	wpa_s = wpa_s->parent->parent;
-		wpa_s = wpa_s->parent;
 
 	ctrl_iface = wpa_s->global->dbus;
-	if (ctrl_iface == NULL)
+	if (ctrl_iface == NULL || !wpa_s->dbus_new_path)
 		return 0;
 
 	os_snprintf(pgrp_obj_path, WPAS_DBUS_OBJECT_PATH_MAX,

wpa_supplicant/dbus/dbus_new_handlers.c

@@ -157,7 +157,8 @@ static struct wpa_supplicant * get_iface_by_dbus_path(
 	struct wpa_supplicant *wpa_s;
 
 	for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
-		if (os_strcmp(wpa_s->dbus_new_path, path) == 0)
+		if (wpa_s->dbus_new_path &&
+		    os_strcmp(wpa_s->dbus_new_path, path) == 0)
 			return wpa_s;
 	}
 	return NULL;
@@ -600,7 +601,7 @@ DBusMessage * wpas_dbus_handler_create_interface(DBusMessage *message,
 		iface.bridge_ifname = bridge_ifname;
 		/* Otherwise, have wpa_supplicant attach to it. */
 		wpa_s = wpa_supplicant_add_iface(global, &iface, NULL);
-		if (wpa_s) {
+		if (wpa_s && wpa_s->dbus_new_path) {
 			const char *path = wpa_s->dbus_new_path;
 
 			reply = dbus_message_new_method_return(message);
@@ -684,7 +685,7 @@ DBusMessage * wpas_dbus_handler_get_interface(DBusMessage *message,
 			      DBUS_TYPE_INVALID);
 
 	wpa_s = wpa_supplicant_get_iface(global, ifname);
-	if (wpa_s == NULL)
+	if (wpa_s == NULL || wpa_s->dbus_new_path == NULL)
 		return wpas_dbus_error_iface_unknown(message);
 
 	path = wpa_s->dbus_new_path;
@@ -876,8 +877,10 @@ dbus_bool_t wpas_dbus_getter_interfaces(DBusMessageIter *iter,
 	unsigned int i = 0, num = 0;
 	dbus_bool_t success;
 
-	for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next)
+	for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
-		num++;
+		if (wpa_s->dbus_new_path)
+			num++;
+	}
 
 	paths = os_calloc(num, sizeof(char *));
 	if (!paths) {
@@ -885,8 +888,10 @@ dbus_bool_t wpas_dbus_getter_interfaces(DBusMessageIter *iter,
 		return FALSE;
 	}
 
-	for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next)
+	for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
-		paths[i++] = wpa_s->dbus_new_path;
+		if (wpa_s->dbus_new_path)
+			paths[i++] = wpa_s->dbus_new_path;
+	}
 
 	success = wpas_dbus_simple_array_property_getter(iter,
 							 DBUS_TYPE_OBJECT_PATH,
@@ -1478,7 +1483,8 @@ DBusMessage * wpas_dbus_handler_add_network(DBusMessage *message,
 
 	dbus_message_iter_init(message, &iter);
 
-	ssid = wpa_config_add_network(wpa_s->conf);
+	if (wpa_s->dbus_new_path)
+		ssid = wpa_config_add_network(wpa_s->conf);
 	if (ssid == NULL) {
 		wpa_printf(MSG_ERROR, "%s[dbus]: can't add new interface.",
 			   __func__);
@@ -1602,7 +1608,7 @@ DBusMessage * wpas_dbus_handler_remove_network(DBusMessage *message,
 	iface = wpas_dbus_new_decompose_object_path(op,
 						    WPAS_DBUS_NEW_NETWORKS_PART,
 						    &net_id);
-	if (iface == NULL || net_id == NULL ||
+	if (iface == NULL || net_id == NULL || !wpa_s->dbus_new_path ||
 	    os_strcmp(iface, wpa_s->dbus_new_path) != 0) {
 		reply = wpas_dbus_error_invalid_args(message, op);
 		goto out;
@@ -1715,7 +1721,7 @@ DBusMessage * wpas_dbus_handler_select_network(DBusMessage *message,
 	iface = wpas_dbus_new_decompose_object_path(op,
 						    WPAS_DBUS_NEW_NETWORKS_PART,
 						    &net_id);
-	if (iface == NULL || net_id == NULL ||
+	if (iface == NULL || net_id == NULL || !wpa_s->dbus_new_path ||
 	    os_strcmp(iface, wpa_s->dbus_new_path) != 0) {
 		reply = wpas_dbus_error_invalid_args(message, op);
 		goto out;
@@ -1773,7 +1779,7 @@ DBusMessage * wpas_dbus_handler_network_reply(DBusMessage *message,
 	iface = wpas_dbus_new_decompose_object_path(op,
 						    WPAS_DBUS_NEW_NETWORKS_PART,
 						    &net_id);
-	if (iface == NULL || net_id == NULL ||
+	if (iface == NULL || net_id == NULL || !wpa_s->dbus_new_path ||
 	    os_strcmp(iface, wpa_s->dbus_new_path) != 0) {
 		reply = wpas_dbus_error_invalid_args(message, op);
 		goto out;
@@ -2266,12 +2272,14 @@ DBusMessage * wpas_dbus_handler_set_pkcs11_engine_and_module_path(
 			message, DBUS_ERROR_FAILED,
 			"Reinit of the EAPOL state machine with the new PKCS #11 engine and module path failed.");
 
-	wpa_dbus_mark_property_changed(
+	if (wpa_s->dbus_new_path) {
-		wpa_s->global->dbus, wpa_s->dbus_new_path,
+		wpa_dbus_mark_property_changed(
-		WPAS_DBUS_NEW_IFACE_INTERFACE, "PKCS11EnginePath");
+			wpa_s->global->dbus, wpa_s->dbus_new_path,
-	wpa_dbus_mark_property_changed(
+			WPAS_DBUS_NEW_IFACE_INTERFACE, "PKCS11EnginePath");
-		wpa_s->global->dbus, wpa_s->dbus_new_path,
+		wpa_dbus_mark_property_changed(
-		WPAS_DBUS_NEW_IFACE_INTERFACE, "PKCS11ModulePath");
+			wpa_s->global->dbus, wpa_s->dbus_new_path,
+			WPAS_DBUS_NEW_IFACE_INTERFACE, "PKCS11ModulePath");
+	}
 
 	return NULL;
 }
@@ -3024,7 +3032,7 @@ dbus_bool_t wpas_dbus_getter_current_bss(DBusMessageIter *iter,
 	struct wpa_supplicant *wpa_s = user_data;
 	char path_buf[WPAS_DBUS_OBJECT_PATH_MAX], *bss_obj_path = path_buf;
 
-	if (wpa_s->current_bss)
+	if (wpa_s->current_bss && wpa_s->dbus_new_path)
 		os_snprintf(bss_obj_path, WPAS_DBUS_OBJECT_PATH_MAX,
 			    "%s/" WPAS_DBUS_NEW_BSSIDS_PART "/%u",
 			    wpa_s->dbus_new_path, wpa_s->current_bss->id);
@@ -3052,7 +3060,7 @@ dbus_bool_t wpas_dbus_getter_current_network(DBusMessageIter *iter,
 	struct wpa_supplicant *wpa_s = user_data;
 	char path_buf[WPAS_DBUS_OBJECT_PATH_MAX], *net_obj_path = path_buf;
 
-	if (wpa_s->current_ssid)
+	if (wpa_s->current_ssid && wpa_s->dbus_new_path)
 		os_snprintf(net_obj_path, WPAS_DBUS_OBJECT_PATH_MAX,
 			    "%s/" WPAS_DBUS_NEW_NETWORKS_PART "/%u",
 			    wpa_s->dbus_new_path, wpa_s->current_ssid->id);
@@ -3140,6 +3148,12 @@ dbus_bool_t wpas_dbus_getter_bsss(DBusMessageIter *iter, DBusError *error,
 	unsigned int i = 0;
 	dbus_bool_t success = FALSE;
 
+	if (!wpa_s->dbus_new_path) {
+		dbus_set_error(error, DBUS_ERROR_FAILED,
+			       "%s: no D-Bus interface", __func__);
+		return FALSE;
+	}
+
 	paths = os_calloc(wpa_s->num_bss, sizeof(char *));
 	if (!paths) {
 		dbus_set_error_const(error, DBUS_ERROR_NO_MEMORY, "no memory");
@@ -3191,6 +3205,12 @@ dbus_bool_t wpas_dbus_getter_networks(DBusMessageIter *iter, DBusError *error,
 	unsigned int i = 0, num = 0;
 	dbus_bool_t success = FALSE;
 
+	if (!wpa_s->dbus_new_path) {
+		dbus_set_error(error, DBUS_ERROR_FAILED,
+			       "%s: no D-Bus interface", __func__);
+		return FALSE;
+	}
+
 	for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next)
 		if (!network_is_persistent_group(ssid))
 			num++;
@@ -4104,7 +4124,7 @@ void wpas_dbus_signal_preq(struct wpa_supplicant *wpa_s,
 	struct wpas_dbus_priv *priv = wpa_s->global->dbus;
 
 	/* Do nothing if the control interface is not turned on */
-	if (priv == NULL)
+	if (priv == NULL || !wpa_s->dbus_new_path)
 		return;
 
 	if (wpa_s->preq_notify_peer == NULL)

wpa_supplicant/dbus/dbus_new_handlers_p2p.c

@@ -354,7 +354,8 @@ DBusMessage * wpas_dbus_handler_p2p_group_add(DBusMessage *message,
 			pg_object_path, WPAS_DBUS_NEW_PERSISTENT_GROUPS_PART,
 			&net_id_str);
 		if (iface == NULL || net_id_str == NULL ||
-		    os_strcmp(iface, wpa_s->dbus_new_path) != 0) {
+		    !wpa_s->parent->dbus_new_path ||
+		    os_strcmp(iface, wpa_s->parent->dbus_new_path) != 0) {
 			reply =
 			    wpas_dbus_error_invalid_args(message,
 							 pg_object_path);
@@ -649,7 +650,8 @@ DBusMessage * wpas_dbus_handler_p2p_invite(DBusMessage *message,
 			WPAS_DBUS_NEW_PERSISTENT_GROUPS_PART,
 			&net_id_str);
 		if (iface == NULL || net_id_str == NULL ||
-		    os_strcmp(iface, wpa_s->dbus_new_path) != 0) {
+		    !wpa_s->parent->dbus_new_path ||
+		    os_strcmp(iface, wpa_s->parent->dbus_new_path) != 0) {
 			reply = wpas_dbus_error_invalid_args(message,
 							     pg_object_path);
 			goto out;
@@ -1043,7 +1045,8 @@ dbus_bool_t wpas_dbus_getter_p2p_peers(DBusMessageIter *iter, DBusError *error,
 
 	char **peer_obj_paths = NULL;
 
-	if (!wpa_dbus_p2p_check_enabled(wpa_s, NULL, NULL, error))
+	if (!wpa_dbus_p2p_check_enabled(wpa_s, NULL, NULL, error) ||
+	    !wpa_s->parent->parent->dbus_new_path)
 		return FALSE;
 
 	dl_list_init(&peer_objpath_list);
@@ -1064,7 +1067,8 @@ dbus_bool_t wpas_dbus_getter_p2p_peers(DBusMessageIter *iter, DBusError *error,
 		os_snprintf(node->path, WPAS_DBUS_OBJECT_PATH_MAX,
 			    "%s/" WPAS_DBUS_NEW_P2P_PEERS_PART
 			    "/" COMPACT_MACSTR,
-			    wpa_s->dbus_new_path, MAC2STR(addr));
+			    wpa_s->parent->parent->dbus_new_path,
+			    MAC2STR(addr));
 		dl_list_add_tail(&peer_objpath_list, &node->list);
 		num++;
 
@@ -1184,13 +1188,17 @@ dbus_bool_t wpas_dbus_getter_p2p_peergo(DBusMessageIter *iter,
 	struct wpa_supplicant *wpa_s = user_data;
 	char go_peer_obj_path[WPAS_DBUS_OBJECT_PATH_MAX], *path;
 
+	if (!wpa_s->parent->parent->dbus_new_path)
+		return FALSE;
+
 	if (wpas_get_p2p_role(wpa_s) != WPAS_P2P_ROLE_CLIENT)
 		os_snprintf(go_peer_obj_path, WPAS_DBUS_OBJECT_PATH_MAX, "/");
 	else
 		os_snprintf(go_peer_obj_path, WPAS_DBUS_OBJECT_PATH_MAX,
 			    "%s/" WPAS_DBUS_NEW_P2P_PEERS_PART "/"
 			    COMPACT_MACSTR,
-			    wpa_s->dbus_new_path, MAC2STR(wpa_s->go_dev_addr));
+			    wpa_s->parent->parent->dbus_new_path,
+			    MAC2STR(wpa_s->go_dev_addr));
 
 	path = go_peer_obj_path;
 	return wpas_dbus_simple_property_getter(iter, DBUS_TYPE_OBJECT_PATH,
@@ -1636,6 +1644,11 @@ dbus_bool_t wpas_dbus_getter_persistent_groups(DBusMessageIter *iter,
 	unsigned int i = 0, num = 0;
 	dbus_bool_t success = FALSE;
 
+	if (wpa_s->p2p_dev)
+		wpa_s = wpa_s->p2p_dev;
+	if (!wpa_s->parent->dbus_new_path)
+		return FALSE;
+
 	for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next)
 		if (network_is_persistent_group(ssid))
 			num++;
@@ -1659,7 +1672,7 @@ dbus_bool_t wpas_dbus_getter_persistent_groups(DBusMessageIter *iter,
 		/* Construct the object path for this network. */
 		os_snprintf(paths[i++], WPAS_DBUS_OBJECT_PATH_MAX,
 			    "%s/" WPAS_DBUS_NEW_PERSISTENT_GROUPS_PART "/%d",
-			    wpa_s->dbus_new_path, ssid->id);
+			    wpa_s->parent->dbus_new_path, ssid->id);
 	}
 
 	success = wpas_dbus_simple_array_property_getter(iter,
@@ -1746,7 +1759,10 @@ DBusMessage * wpas_dbus_handler_add_persistent_group(
 
 	dbus_message_iter_init(message, &iter);
 
-	ssid = wpa_config_add_network(wpa_s->conf);
+	if (wpa_s->p2p_dev)
+		wpa_s = wpa_s->p2p_dev;
+	if (wpa_s->parent->dbus_new_path)
+		ssid = wpa_config_add_network(wpa_s->conf);
 	if (ssid == NULL) {
 		wpa_printf(MSG_ERROR,
 			   "dbus: %s: Cannot add new persistent group",
@@ -1779,7 +1795,7 @@ DBusMessage * wpas_dbus_handler_add_persistent_group(
 	/* Construct the object path for this network. */
 	os_snprintf(path, WPAS_DBUS_OBJECT_PATH_MAX,
 		    "%s/" WPAS_DBUS_NEW_PERSISTENT_GROUPS_PART "/%d",
-		    wpa_s->dbus_new_path, ssid->id);
+		    wpa_s->parent->dbus_new_path, ssid->id);
 
 	reply = dbus_message_new_method_return(message);
 	if (reply == NULL) {
@@ -1826,6 +1842,9 @@ DBusMessage * wpas_dbus_handler_remove_persistent_group(
 	dbus_message_get_args(message, NULL, DBUS_TYPE_OBJECT_PATH, &op,
 			      DBUS_TYPE_INVALID);
 
+	if (wpa_s->p2p_dev)
+		wpa_s = wpa_s->p2p_dev;
+
 	/*
 	 * Extract the network ID and ensure the network is actually a child of
 	 * this interface.
@@ -1834,7 +1853,8 @@ DBusMessage * wpas_dbus_handler_remove_persistent_group(
 		op, WPAS_DBUS_NEW_PERSISTENT_GROUPS_PART,
 		&persistent_group_id);
 	if (iface == NULL || persistent_group_id == NULL ||
-	    os_strcmp(iface, wpa_s->dbus_new_path) != 0) {
+	    !wpa_s->parent->dbus_new_path ||
+	    os_strcmp(iface, wpa_s->parent->dbus_new_path) != 0) {
 		reply = wpas_dbus_error_invalid_args(message, op);
 		goto out;
 	}
@@ -1899,6 +1919,8 @@ DBusMessage * wpas_dbus_handler_remove_all_persistent_groups(
 	struct wpa_ssid *ssid, *next;
 	struct wpa_config *config;
 
+	if (wpa_s->p2p_dev)
+		wpa_s = wpa_s->p2p_dev;
 	config = wpa_s->conf;
 	ssid = config->ssid;
 	while (ssid) {
@@ -1928,6 +1950,9 @@ dbus_bool_t wpas_dbus_getter_p2p_group_members(DBusMessageIter *iter,
 	const u8 *addr;
 	dbus_bool_t success = FALSE;
 
+	if (!wpa_s->parent->parent->dbus_new_path)
+		return FALSE;
+
 	/* Verify correct role for this property */
 	if (wpas_get_p2p_role(wpa_s) != WPAS_P2P_ROLE_GO) {
 		return wpas_dbus_simple_array_property_getter(
@@ -1955,7 +1980,8 @@ dbus_bool_t wpas_dbus_getter_p2p_group_members(DBusMessageIter *iter,
 		os_snprintf(paths[i], WPAS_DBUS_OBJECT_PATH_MAX,
 			    "%s/" WPAS_DBUS_NEW_P2P_PEERS_PART
 			    "/" COMPACT_MACSTR,
-			    wpa_s->parent->dbus_new_path, MAC2STR(addr));
+			    wpa_s->parent->parent->dbus_new_path,
+			    MAC2STR(addr));
 		i++;
 	}
 

wpa_supplicant/dbus/dbus_new_handlers_wps.c

@@ -358,6 +358,8 @@ dbus_bool_t wpas_dbus_setter_process_credentials(DBusMessageIter *iter,
 	struct wpa_supplicant *wpa_s = user_data;
 	dbus_bool_t process_credentials, old_pc;
 
+	if (!wpa_s->dbus_new_path)
+		return FALSE;
 	if (!wpas_dbus_simple_property_setter(iter, error, DBUS_TYPE_BOOLEAN,
 					      &process_credentials))
 		return FALSE;

wpa_supplicant/dbus/dbus_old.c

@@ -383,7 +383,7 @@ void wpa_supplicant_dbus_notify_scan_results(struct wpa_supplicant *wpa_s)
 	DBusMessage *_signal;
 
 	/* Do nothing if the control interface is not turned on */
-	if (iface == NULL)
+	if (iface == NULL || !wpa_s->dbus_path)
 		return;
 
 	_signal = dbus_message_new_signal(wpa_s->dbus_path,
@@ -474,7 +474,7 @@ void wpa_supplicant_dbus_notify_scanning(struct wpa_supplicant *wpa_s)
 	dbus_bool_t scanning = wpa_s->scanning ? TRUE : FALSE;
 
 	/* Do nothing if the control interface is not turned on */
-	if (iface == NULL)
+	if (iface == NULL || !wpa_s->dbus_path)
 		return;
 
 	_signal = dbus_message_new_signal(wpa_s->dbus_path,
@@ -509,7 +509,7 @@ void wpa_supplicant_dbus_notify_wps_cred(struct wpa_supplicant *wpa_s,
 	if (wpa_s->global == NULL)
 		return;
 	iface = wpa_s->global->dbus;
-	if (iface == NULL)
+	if (iface == NULL || !wpa_s->dbus_path)
 		return;
 
 	_signal = dbus_message_new_signal(wpa_s->dbus_path,
@@ -559,7 +559,7 @@ void wpa_supplicant_dbus_notify_certification(struct wpa_supplicant *wpa_s,
 	if (wpa_s->global == NULL)
 		return;
 	iface = wpa_s->global->dbus;
-	if (iface == NULL)
+	if (iface == NULL || !wpa_s->dbus_path)
 		return;
 
 	_signal = dbus_message_new_signal(wpa_s->dbus_path,
@@ -738,7 +738,7 @@ struct wpa_supplicant * wpa_supplicant_get_iface_by_dbus_path(
 	struct wpa_supplicant *wpa_s;
 
 	for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
-		if (strcmp(wpa_s->dbus_path, path) == 0)
+		if (wpa_s->dbus_path && strcmp(wpa_s->dbus_path, path) == 0)
 			return wpa_s;
 	}
 	return NULL;

wpa_supplicant/dbus/dbus_old_handlers.c

@@ -166,7 +166,7 @@ DBusMessage * wpas_dbus_global_add_interface(DBusMessage *message,
 		iface.bridge_ifname = bridge_ifname;
 		/* Otherwise, have wpa_supplicant attach to it. */
 		wpa_s = wpa_supplicant_add_iface(global, &iface, NULL);
-		if (wpa_s) {
+		if (wpa_s && wpa_s->dbus_path) {
 			const char *path = wpa_s->dbus_path;
 
 			reply = dbus_message_new_method_return(message);
@@ -262,7 +262,7 @@ DBusMessage * wpas_dbus_global_get_interface(DBusMessage *message,
 	}
 
 	wpa_s = wpa_supplicant_get_iface(global, ifname);
-	if (wpa_s == NULL) {
+	if (wpa_s == NULL || !wpa_s->dbus_path) {
 		reply = wpas_dbus_new_invalid_iface_error(message);
 		goto out;
 	}
@@ -354,6 +354,11 @@ DBusMessage * wpas_dbus_iface_scan_results(DBusMessage *message,
 	DBusMessageIter sub_iter;
 	struct wpa_bss *bss;
 
+	if (!wpa_s->dbus_path)
+		return dbus_message_new_error(message,
+					      WPAS_ERROR_INTERNAL_ERROR,
+					      "no D-Bus interface available");
+
 	/* Create and initialize the return message */
 	reply = dbus_message_new_method_return(message);
 	dbus_message_iter_init_append(reply, &iter);
@@ -708,10 +713,11 @@ DBusMessage * wpas_dbus_iface_add_network(DBusMessage *message,
 					  struct wpa_supplicant *wpa_s)
 {
 	DBusMessage *reply = NULL;
-	struct wpa_ssid *ssid;
+	struct wpa_ssid *ssid = NULL;
 	char path_buf[WPAS_DBUS_OBJECT_PATH_MAX], *path = path_buf;
 
-	ssid = wpa_config_add_network(wpa_s->conf);
+	if (wpa_s->dbus_path)
+		ssid = wpa_config_add_network(wpa_s->conf);
 	if (ssid == NULL) {
 		reply = dbus_message_new_error(
 			message, WPAS_ERROR_ADD_NETWORK_ERROR,
@@ -769,7 +775,7 @@ DBusMessage * wpas_dbus_iface_remove_network(DBusMessage *message,
 	}
 
 	/* Ensure the network is actually a child of this interface */
-	if (os_strcmp(iface, wpa_s->dbus_path) != 0) {
+	if (!wpa_s->dbus_path || os_strcmp(iface, wpa_s->dbus_path) != 0) {
 		reply = wpas_dbus_new_invalid_network_error(message);
 		goto out;
 	}
@@ -1020,7 +1026,7 @@ DBusMessage * wpas_dbus_iface_select_network(DBusMessage *message,
 			goto out;
 		}
 		/* Ensure the object path really points to this interface */
-		if (network == NULL ||
+		if (network == NULL || !wpa_s->dbus_path ||
 		    os_strcmp(iface_obj_path, wpa_s->dbus_path) != 0) {
 			reply = wpas_dbus_new_invalid_network_error(message);
 			goto out;