Class: Socialinvestigator::Client::Net::DNS

Inherits:
Object
  • Object
show all
Defined in:
lib/socialinvestigator/client/net.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ DNS

Returns a new instance of DNS.



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# File 'lib/socialinvestigator/client/net.rb', line 107

def initialize
  @resolv = Dnsruby::Resolver.new
end

Instance Method Details

#find_domain(hostname) ⇒ Object 



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# File 'lib/socialinvestigator/client/net.rb', line 111

def find_domain( hostname )
  # puts "Looking for SOA of #{hostname}"
  soa = @resolv.query( hostname, "SOA" ).answer.select do |rr|
    rr.is_a? Dnsruby::RR::IN::SOA
  end

  return hostname if soa.length > 0

  parts = hostname.split( /\./ )
  return nil if parts.length <= 2

  find_domain( parts.slice(1,100).join( "." ) )
end