Create rules.sh

First publish of file (Tested local)
V1.2.56 [STABLE]
Bugs? Please mail me

captiveportal/firewall/rules.sh

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+#Captive portal iptables rule script
+#Copyright Deben Oldert
+#This script handles the rules for the captive portal
+#It is multifuncional
+#Initialize the new rules (startup)
+#Delete a rule for an ip to grand internet access
+#Display statusses
+
+#define version of the script
+version="V1.2.56"
+
+#load IPTables
+IPTABLES=/sbin/iptables
+
+#When it needs to initialize the rules, do this
+if [ "$1" == "initialize" ]
+then
+  #Display startup message
+  echo $version
+  echo "Copy right: Deben Oldert"
+  #Flush all existing rules
+  $IPTABLES -F
+  $IPTABLES -X
+  #Allow forwarding
+  echo 1 > /proc/sys/net/ipv4/ip_forward
+  #Read all ips from ip file and make rule per ip
+  #Each ip from the list will be redirected to the captive portal
+  echo "These IP's will be redirected to the Captive Portal"
+  #define 1 (ip counter) and set it to zero
+  i=0
+  #Read each line as $ip
+  while read ip
+    do
+        #Shits getting serious now
+        $IPTABLES -t nat -A PREROUTING -s "$ip" -p tcp -j DNAT --to-destination$
+        #Print the ip
+        echo $ip
+        #Increment 1 on i
+        ((i++))
+    #Not the last line in file? Lets do is again!
+    done < /users
+  #Show the amount of ip's
+  echo "Added $i IP's to rule list"
+  echo "Done"
+  fi
+
+#If action is permitting acces to internet, delete rule to portal
+if [ "$1" == "delete" ]
+  then
+    #check if $2 (ip adress) not empty
+    if [[ ! -z "$2" ]]
+    then
+      #Delete the rule
+      $IPTABLES -t nat -D PREROUTING -s $2 -p tcp -j DNAT --to-destin$
+      #Tell the system its fine
+      echo "SUCCES"
+    else
+      #Missing the $2 parameter
+      echo "FAIL"
+  fi
+fi
+#This is for debugging only
+#$IPTABLES -t nat -L PREROUTING