From 08c45deb2efa42a121064056526b8715bccdee37 Mon Sep 17 00:00:00 2001
From: teastep <teastep@fbd18981-670d-0410-9b5c-8dc0c1a9a2bb>
Date: Mon, 23 Jun 2003 23:04:50 +0000
Subject: [PATCH] Make new code work on lesser shells

git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@613 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
---
 Shorewall/firewall | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/Shorewall/firewall b/Shorewall/firewall
index bee287921..8db5f75f7 100755
--- a/Shorewall/firewall
+++ b/Shorewall/firewall
@@ -2869,11 +2869,11 @@ decodeaddr() {
 encodeaddr() {
     addr=$1
     local x
-    local y=$(($addr % 256))
+    local y=$(($addr & 255))
 
-    for (( x=3 ; $x ; x-- )); do
+    for x in 1 2 3 ; do
 	addr=$(($addr >> 8))
-	y=$(($addr % 256)).$y
+	y=$(($addr & 255)).$y
     done
 
     echo $y
@@ -2898,7 +2898,7 @@ ip_range() {
 # Netmask from CIDR
 #
 ip_netmask() {
-    echo $(( $(( 0xffffffff << $((32 - ${1#*/})) )) & 0xffffffff ))
+    echo $(( -1 << $((32 - ${1#*/})) ))
 }
 #
 # Network address from CIDR
@@ -2916,7 +2916,7 @@ broadcastaddress() {
     local decodedaddr=`decodeaddr ${1%/*}`
     local netmask=`ip_netmask $1`
 
-    echo `encodeaddr $(( $(($decodedaddr & $netmask)) | $(( $netmask ^ 0xffffffff )) ))`
+    echo `encodeaddr $(( $(($decodedaddr & $netmask)) | $(( $netmask ^ -1 )) ))`
 }
 #
 # Test for subnet membership