Class: Resolv::IPv6

Inherits:
Object
  • Object
show all
Defined in:
lib/celluloid/dns/extensions/resolv.rb

Overview

Clearly, the Ruby 2.3.0 release was throughly tested.

Class Method Summary collapse

Class Method Details

.create(arg) ⇒ Object 



89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
 
# File 'lib/celluloid/dns/extensions/resolv.rb', line 89

def self.create(arg)
  case arg
  when IPv6
    return arg
  when String
    address = ''.b
    if Regex_8Hex =~ arg
      arg.scan(/[0-9A-Fa-f]+/) {|hex| address << [hex.hex].pack('n')}
    elsif Regex_CompressedHex =~ arg
      prefix = $1
      suffix = $2
      a1 = ''.b
      a2 = ''.b
      prefix.scan(/[0-9A-Fa-f]+/) {|hex| a1 << [hex.hex].pack('n')}
      suffix.scan(/[0-9A-Fa-f]+/) {|hex| a2 << [hex.hex].pack('n')}
      omitlen = 16 - a1.length - a2.length
      address << a1 << "\0" * omitlen << a2
    elsif Regex_6Hex4Dec =~ arg
      prefix, a, b, c, d = $1, $2.to_i, $3.to_i, $4.to_i, $5.to_i
      if (0..255) === a && (0..255) === b && (0..255) === c && (0..255) === d
        prefix.scan(/[0-9A-Fa-f]+/) {|hex| address << [hex.hex].pack('n')}
        address << [a, b, c, d].pack('CCCC')
      else
        raise ArgumentError.new("not numeric IPv6 address: " + arg)
      end
    elsif Regex_CompressedHex4Dec =~ arg
      prefix, suffix, a, b, c, d = $1, $2, $3.to_i, $4.to_i, $5.to_i, $6.to_i
      if (0..255) === a && (0..255) === b && (0..255) === c && (0..255) === d
        a1 = ''.b
        a2 = ''.b
        prefix.scan(/[0-9A-Fa-f]+/) {|hex| a1 << [hex.hex].pack('n')}
        suffix.scan(/[0-9A-Fa-f]+/) {|hex| a2 << [hex.hex].pack('n')}
        omitlen = 12 - a1.length - a2.length
        address << a1 << "\0" * omitlen << a2 << [a, b, c, d].pack('CCCC')
      else
        raise ArgumentError.new("not numeric IPv6 address: " + arg)
      end
    else
      raise ArgumentError.new("not numeric IPv6 address: " + arg)
    end
    return IPv6.new(address)
  else
    raise ArgumentError.new("cannot interpret as IPv6 address: #{arg.inspect}")
  end
end