CoCalc provides the best real-time collaborative environment for Jupyter Notebooks, LaTeX documents, and SageMath, scalable from individual users to large groups and classes!

1
# -*- coding: binary -*-
2
##
3
#
4
# Net::DNS::RR::PTR
5
#
6
#       $Id: PTR.rb,v 1.5 2006/07/28 07:33:36 bluemonk Exp $    
7
#
8
##
9

10
module Net
11
  module DNS
12
    class RR
13
      
14
      #------------------------------------------------------------
15
      # RR type PTR
16
      #------------------------------------------------------------
17
      class PTR < RR
18

19
        # Getter for PTR resource
20
        def ptr
21
          @ptrdname.to_s
22
        end
23
        alias_method :ptrdname, :ptr
24
        
25
        private
26
        
27
        def check_ptr(str)
28
          IPAddr.new str
29
        rescue
30
          raise RRArgumentError, "PTR section not valid"
31
        end
32
        
33
        def build_pack
34
          @ptrdname_pack = pack_name(@ptrdname)
35
          @rdlength = @ptrdname_pack.size
36
        end
37

38
        def set_type
39
          @type = Net::DNS::RR::Types.new("PTR")
40
        end
41

42
        def get_data
43
          @ptrdname_pack
44
        end
45

46
        def get_inspect
47
          "#@ptrdname"
48
        end
49

50
        def subclass_new_from_hash(args)
51
          if args.has_key? :ptrdname or args.has_key? :ptr
52
            @ptrdname = args[0][:ptrdname]
53
          else
54
            raise RRArgumentError, ":ptrdname or :ptr field is mandatory but missing"
55
          end
56
        end
57

58
        def subclass_new_from_string(str)
59
          @ptrdname = check_ptr(str)
60
        end
61

62
        def subclass_new_from_binary(data,offset)
63
          @ptrdname,offset = dn_expand(data,offset)
64
          return offset
65
        end
66

67
      end # class PTR
68
      
69
    end # class RR
70
  end # module DNS
71
end # module Net
72

73