Move helper function to correct area

1 files changed, 25 insertions, 0 deletions

diff --git a/etc/inc/captiveportal.inc b/etc/inc/captiveportal.inc
index e09a027..1c44870 100644
--- a/etc/inc/captiveportal.inc
+++ b/etc/inc/captiveportal.inc
@@ -940,4 +940,29 @@ function captiveportal_write_elements() {
 	return 0;
 }
 
+/*
+ * This function will calculate the lowest free firewall ruleno
+ * within the range specified based on the actual installed rules
+ *
+ */
+
+function captiveportal_get_next_ipfw_ruleno($rulenos_start = 10000, $rulenos_range_max = 9899) {
+
+	exec("/sbin/ipfw show", $fwrules);
+	foreach ($fwrules as $fwrule) {
+		preg_match("/^(\d+)\s+/", $fwrule, $matches);
+		$rulenos_used[] = $matches[1];
+	}
+	$rulenos_used = array_unique($rulenos_used);
+	$rulenos_range = count($rulenos_used);
+	if ($rulenos_range > $rulenos_range_max) {
+		return NULL;
+	}
+	$rulenos_pool = range($rulenos_start, ($rulenos_start + $rulenos_range));
+	$rulenos_free = array_diff($rulenos_pool, $rulenos_used);
+	$ruleno = array_shift($rulenos_free);
+
+	return $ruleno;
+}
+
 ?>
\ No newline at end of file