[PATCH v4 10/29] wpa_supplicant: udp ctrl setup ctrl_interface

[Janusz Dziedzic <janusz.dziedzic@xxxxxxxxx>]

Setup ctrl_interface name. This should be used
to check interface <-> udp port assigment.

Signed-off-by: Janusz Dziedzic <janusz.dziedzic@xxxxxxxxx>
---
 wpa_supplicant/ctrl_iface_udp.c | 20 ++++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)

diff --git a/wpa_supplicant/ctrl_iface_udp.c b/wpa_supplicant/ctrl_iface_udp.c
index 8ab8ee8..f13ba4a 100644
--- a/wpa_supplicant/ctrl_iface_udp.c
+++ b/wpa_supplicant/ctrl_iface_udp.c
@@ -363,8 +363,9 @@ struct ctrl_iface_priv *
 wpa_supplicant_ctrl_iface_init(struct wpa_supplicant *wpa_s)
 {
 	struct ctrl_iface_priv *priv;
+	char port_str[40];
 	int port = WPA_CTRL_IFACE_PORT;
-	char *pos;
+	char *pos = NULL;
 #ifdef CONFIG_CTRL_IFACE_UDP_IPV6
 	struct sockaddr_in6 addr;
 	int domain = PF_INET6;
@@ -380,10 +381,8 @@ wpa_supplicant_ctrl_iface_init(struct wpa_supplicant *wpa_s)
 	priv->sock = -1;
 	os_get_random(priv->cookie, COOKIE_LEN);
 
-	if (wpa_s->conf->ctrl_interface == NULL)
-		return priv;
-
-	pos = os_strstr(wpa_s->conf->ctrl_interface, "udp:");
+	if (wpa_s->conf->ctrl_interface)
+	    pos = os_strstr(wpa_s->conf->ctrl_interface, "udp:");
 	if (pos) {
 		pos += 4;
 		port = atoi(pos);
@@ -424,12 +423,21 @@ try_again:
 #endif /* CONFIG_CTRL_IFACE_UDP_IPV6 */
 	if (bind(priv->sock, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
 		port--;
-		if ((WPA_CTRL_IFACE_PORT - port) < WPA_CTRL_IFACE_PORT_LIMIT && !pos)
+		if ((WPA_CTRL_IFACE_PORT - port) < WPA_CTRL_IFACE_PORT_LIMIT)
 			goto try_again;
 		wpa_printf(MSG_ERROR, "bind(AF_INET): %s", strerror(errno));
 		goto fail;
 	}
 
+	/* Setup correct ctrl_interface */
+	os_snprintf(port_str, sizeof(port_str), "udp:%d", port);
+	os_free(wpa_s->conf->ctrl_interface);
+	wpa_s->conf->ctrl_interface = os_strdup(port_str);
+	if (!wpa_s->conf->ctrl_interface) {
+		wpa_msg(wpa_s, MSG_DEBUG, "failed to malloc ctrl_inteface");
+		goto fail;
+	}
+
 #ifdef CONFIG_CTRL_IFACE_UDP_REMOTE
 	wpa_msg(wpa_s, MSG_DEBUG, "ctrl_iface_init UDP port: %d", port);
 #endif /* CONFIG_CTRL_IFACE_UDP_REMOTE */
-- 
1.9.1


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