check_freshclam

#!/usr/bin/env ruby
require 'date'

state = {
    :ok       => 0,
    :warning  => 1,
    :critical => 2,
    :unknown  => 3
}


out = `/usr/bin/freshclam -V`
now = DateTime.now

signature_date = DateTime.parse(out.split('/').last)
signature_age  = (DateTime.now - signature_date).to_f

if signature_age < 2.5
    puts "Signatures up-to-date (#{signature_date})."
    exit state[:ok]
elsif (2.5..5).include? signature_age
    puts "Signatures are #{signature_age.to_i} days old."
    exit state[:warning]
elsif (5..14).include? signature_age
    puts "ATTENTION! Signatures are #{signature_age.to_i} days old!"
    exit state[:critical]
else
    puts "ARE YOU INSANE!? Y U NO UPDATE YOUR SIGNATURES?"
    exit state[:critical]
end

exit state[:unknown]