File _service:tar_scm:CVE-2021-29425-4.patch of Package apache-commons-io

File _service:tar_scm:CVE-2021-29425-4.patch of Package apache-commons-io (Revision c2be28726050c6a9a8a18c9c75c066ef)

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From 0842e1f60a1ca36c8db76a00c6001a38174de21b Mon Sep 17 00:00:00 2001
From: Stefan Bodewig <stefan.bodewig@innoq.com>
Date: Thu, 17 May 2018 21:04:34 +0200
Subject: [PATCH 4/4] remove IPv4 checks that are unnnecessary due to matching
 regex

---
 .../java/org/apache/commons/io/FilenameUtils.java | 15 ++-------------
 1 file changed, 2 insertions(+), 13 deletions(-)

diff --git a/src/main/java/org/apache/commons/io/FilenameUtils.java b/src/main/java/org/apache/commons/io/FilenameUtils.java
index b93476bb..5da8f786 100644
--- a/src/main/java/org/apache/commons/io/FilenameUtils.java
+++ b/src/main/java/org/apache/commons/io/FilenameUtils.java
@@ -1490,20 +1490,9 @@ public class FilenameUtils {
         }
 
         // verify that address subgroups are legal
-        for (int i = 1; i < 5; i++) {
+        for (int i = 1; i <= 4; i++) {
             String ipSegment = m.group(i);
-            if (ipSegment == null || ipSegment.length() == 0) {
-                return false;
-            }
-
-            int iIpSegment = 0;
-
-            try {
-                iIpSegment = Integer.parseInt(ipSegment);
-            } catch(NumberFormatException e) {
-                return false;
-            }
-
+            int iIpSegment = Integer.parseInt(ipSegment);
             if (iIpSegment > IPV4_MAX_OCTET_VALUE) {
                 return false;
             }
-- 
2.23.0