Module: Win32::Resolv

# File 'ext/win32/lib/win32/resolv.rb', line 24

def self.get_hosts_path
  path = get_hosts_dir
  path = File.expand_path('hosts', path)
  File.exist?(path) ? path : nil
end

# File 'ext/win32/lib/win32/resolv.rb', line 56

def get_info
  search = nil
  nameserver = get_dns_server_list

  tcpip_params do |params|
    slist = params.value('SearchList')
    search = slist.split(/,\s*/) if slist and !slist.empty?

    if add_search = search.nil?
      search = []
      domain = params.value('Domain')

      if domain and !domain.empty?
        search = [ domain ]
        udmnd = params.value('UseDomainNameDevolution')
        if udmnd&.nonzero?
          if /^\w+\./ =~ domain
            devo = $'
          end
        end
      end
    end

    params.open('Interfaces') do |reg|
      reg.each_key do |iface|
        next unless ns = %w[NameServer DhcpNameServer].find do |key|
          ns = iface.value(key)
          break ns.split(/[,\s]\s*/) if ns and !ns.empty?
        end

        next if (nameserver & ns).empty?

        if add_search
          [ 'Domain', 'DhcpDomain' ].each do |key|
            dom = iface.value(key)
            if dom and !dom.empty?
              search.concat(dom.split(/,\s*/))
              break
            end
          end
        end
      end
    end

    search << devo if add_search and devo
  end
  [ search.uniq, nameserver.uniq ]
end

# File 'ext/win32/lib/win32/resolv.rb', line 30

def self.get_resolv_info
  search, nameserver = get_info
  if search.empty?
    search = nil
  else
    search.delete("")
    search.uniq!
  end
  if nameserver.empty?
    nameserver = nil
  else
    nameserver.delete("")
    nameserver.delete("0.0.0.0")
    nameserver.uniq!
  end
  [ search, nameserver ]
end