From 745059a6e6f7f90e532707c757a3d27cceade240 Mon Sep 17 00:00:00 2001
From: Sukhwinder Dhillon <sukhwinder33445@gmail.com>
Date: Wed, 6 Jul 2022 14:30:29 +0200
Subject: [PATCH] Format.php: Handle null values

(cherry picked from commit 21e4c68a581bb8547a34321c3fcbaf9dfb99ef5f)
---
 library/Icinga/Util/Format.php | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/library/Icinga/Util/Format.php b/library/Icinga/Util/Format.php
index 7808af5cf8..11582080ce 100644
--- a/library/Icinga/Util/Format.php
+++ b/library/Icinga/Util/Format.php
@@ -54,6 +54,10 @@ public static function bytes($value, $standard = self::STANDARD_IEC)
 
     public static function seconds($value)
     {
+        if ($value === null) {
+            return '';
+        }
+
         $absValue = abs($value);
 
         if ($absValue < 60) {
@@ -70,6 +74,10 @@ public static function seconds($value)
 
     protected static function formatForUnits($value, &$units, $base)
     {
+        if ($value === null) {
+            return '';
+        }
+
         $sign = '';
         if ($value < 0) {
             $value = abs($value);
@@ -105,6 +113,10 @@ protected static function formatForUnits($value, &$units, $base)
      */
     public static function secondsByMonth($dateTimeOrTimestamp)
     {
+        if ($dateTimeOrTimestamp === null) {
+            return 0;
+        }
+
         if (!($dt = $dateTimeOrTimestamp) instanceof DateTime) {
             $dt = new DateTime();
             $dt->setTimestamp($dateTimeOrTimestamp);
@@ -122,6 +134,10 @@ public static function secondsByMonth($dateTimeOrTimestamp)
      */
     public static function secondsByYear($dateTimeOrTimestamp)
     {
+        if ($dateTimeOrTimestamp === null) {
+            return 0;
+        }
+
         return (self::isLeapYear($dateTimeOrTimestamp) ? 366 : 365) * 24 * 3600;
     }
 
@@ -134,6 +150,10 @@ public static function secondsByYear($dateTimeOrTimestamp)
      */
     public static function isLeapYear($dateTimeOrTimestamp)
     {
+        if ($dateTimeOrTimestamp === null) {
+            return false;
+        }
+
         if (!($dt = $dateTimeOrTimestamp) instanceof DateTime) {
             $dt = new DateTime();
             $dt->setTimestamp($dateTimeOrTimestamp);