inc: replace another legacy PHP module function

src/etc/inc/interfaces.inc

@@ -87,12 +87,14 @@ function interfaces_bring_up($interface) {
 /*
  * Return the interface array
  */
-function get_interface_arr($flush = false) {
+function get_interface_arr($flush = false)
+{
 	global $interface_arr_cache;
 
 	/* If the cache doesn't exist, build it */
-	if (!isset($interface_arr_cache) or $flush)
-		$interface_arr_cache = pfSense_interface_listget();
+	if (!isset($interface_arr_cache) or $flush) {
+		$interface_arr_cache = legacy_interface_listget();
+	}
 
 	return $interface_arr_cache;
 }

src/etc/inc/interfaces.lib.inc

@@ -26,6 +26,30 @@
 	POSSIBILITY OF SUCH DAMAGE.
 */
 
+function legacy_interface_listget($flag = '')
+{
+	$cmd = '/sbin/ifconfig -l';
+	$ifs = null;
+
+	if ($flag === 'up') {
+		$cmd .= 'u';
+	} else if ($flag === 'down') {
+		$cmd .= 'd';
+	}
+
+	exec($cmd . ' 2>&1', $out, $ret);
+	if ($ret) {
+		log_error('The command `' . $cmd . '\' failed to execute');
+		return ($ifs);
+	}
+
+	if (isset($out[0])) {
+		$ifs = explode(' ', $out[0]);
+	}
+
+	return ($ifs);
+}
+
 function legacy_interface_create($ifs)
 {
 	$cmd = '/sbin/ifconfig ' . escapeshellarg($ifs) . ' create';

src/etc/inc/util.inc

@@ -877,22 +877,24 @@ function get_interface_list($mode = "active", $keyby = "physical", $vfaces = "")
 		);
 	}
 	switch($mode) {
-	case "active":
-		$upints = pfSense_interface_listget(IFF_UP);
+	case 'active':
+		$upints = legacy_interface_listget('up');
 		break;
-	case "media":
-		$intlist = pfSense_interface_listget();
+	case 'media':
+		$intlist = legacy_interface_listget();
 		$ifconfig = "";
 		exec("/sbin/ifconfig -a", $ifconfig);
 		$regexp = '/(' . implode('|', $intlist) . '):\s/';
 		$ifstatus = preg_grep('/status:/', $ifconfig);
-		foreach($ifstatus as $status) {
+		foreach ($ifstatus as $status) {
 			$int = array_shift($intlist);
-			if(stristr($status, "active")) $upints[] = $int;
+			if (stristr($status, 'active')) {
+				$upints[] = $int;
+			}
 		}
 		break;
 	default:
-		$upints = pfSense_interface_listget();
+		$upints = legacy_interface_listget();
 		break;
 	}
 	/* build interface list with netstat */