UPDATE DDNS

# No-IP automatic Dynamic DNS update

#--------------- Change Values in this section to match your setup ------------------

# No-IP User account info

:local noipuser "N̵H̵A̵P̵_̵M̵A̵I̵L̵_̵N̵O̵I̵P̵_̵V̵A̵O̵_̵D̵A̵Y̵"

:local noippass "N̶H̶A̶P̶_̶M̶A̶T̶_̶K̶H̶A̶U̶_̶N̶O̶I̶P̶_̶V̶A̶O̶_̶D̶A̶Y̶"

# Set the hostname or label of network to be updated.

# Hostnames with spaces are unsupported. Replace the value in the quotations below with your host names.

# To specify multiple hosts, separate them with commas.

:local noiphost "N͟H͟Ậ͟P͟ ͟T͟Ê͟N͟ ͟M͟I͟Ề͟N͟ ͟(͟D͟D͟N͟S͟)͟ ͟V͟À͟O͟ ͟Đ͟Â͟Y͟"

# Change to the name of interface that gets the dynamic IP address

:local inetinterface "N̶H̶A̶P̶_̶T̶E̶N̶_̶P̶P̶P̶O̶E̶_̶V̶A̶O̶_̶D̶A̶Y̶"

#------------------------------------------------------------------------------------

# No more changes need

:if ([/interface get $inetinterface value-name=running]) do={

# Get the current IP on the interface

  :local currentIP [/ip address get [find interface="$inetinterface" disabled=no] address]

# Strip the net mask off the IP address

  :for i from=( [:len $currentIP] - 1) to=0 do={

     :if ( [:pick $currentIP $i] = "/") do={ 

        :set currentIP [:pick $currentIP 0 $i]

     } 

  }

# The update URL. Note the "\3F" is hex for question mark (?). Required since ? is a special character in commands.

  :local url "http://dynupdate.no-ip.com/nic/update\3Fmyip=$currentIP"

  :local noiphostarray

  :set noiphostarray [:toarray $noiphost]

  :foreach host in=$noiphostarray do={

    # Check 1 - resolved IP

    :local resolvedIP [:resolve $host];

    # Check 2 - Saved response from NO-IP

    :local filename ("no-ip_ddns_update-" . $host . ".txt")

    :local savedMatch -1

    :local savedIP "No File";

    if ( [:len [/file find name=$filename]] > 0 ) do={

      :set savedIP [/file get $filename contents]

      :set savedMatch [:find $savedIP $currentIP -1]

    }

    # If either check fails, update IP

    :if (($currentIP = $resolvedIP) && ($savedMatch >= 0)) do={

      :log info "No-IP: Host $host already on No-IP with IP $resolvedIP"

    } else={

      :log info "No-IP: Sending update for $host - $resolvedIP saved as $savedIP"

      /tool fetch url=($url . "&hostname=$host") user=$noipuser password=$noippass mode=http dst-path=$filename

      :log info "No-IP: Host $host updated on No-IP with IP $currentIP"

    }

  }

} else={

  :log info "No-IP: $inetinterface is not currently running, so therefore will not update."

}