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# File 'lib/dns_tools/serial_check.rb', line 5
def serialcheck(domain)
root_resolver = Resolv::DNS.new(:nameserver => ['8.8.8.8'])
if domain.nil?
$stderr.puts "usage: check.rb "
end
nameservers = root_resolver.getresources(domain, Resolv::DNS::Resource::IN::NS)
serials = []
for ns in nameservers
ns_resolver = Resolv::DNS.new(:nameserver => [ns.name.to_s])
print ns.name.to_s.ljust(30)
soa = ns_resolver.getresource(domain, Resolv::DNS::Resource::IN::SOA)
if soa
puts "OK (#{soa.serial})"
serials << soa.serial
else
puts "No SOA record found"
end
$stdout.flush
end
if serials.uniq.size == 1
puts "\e[32mAll nameservers have the same serial\e[0m"
elsif serials.empty?
puts "No nameservers found for #{domain}"
else
puts "\e[31mNot all nameservers have the same records\e[0m"
end
end
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