Class: Dnsruby::Prefix

Inherits:
Object
  • Object
show all
Defined in:
lib/dnsruby/resource/APL.rb

Constant Summary collapse

Regex = 
%r{\A([!])?([12]):(.*)/(\d+)\z}

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(af, prefix_length, negative, address_length, address) ⇒ Prefix

Returns a new instance of Prefix.



34
35
36
37
38
39
40
41
42
 
# File 'lib/dnsruby/resource/APL.rb', line 34

def initialize(af, prefix_length, negative, address_length, address)
  @af = af
  @prefix_length = prefix_length
  @negative = negative
  @address_length = address_length
  @address = address
  @flag = address_length
  @flag |= 0x80 if @negative
end

Instance Attribute Details

#address ⇒ Object (readonly)

Returns the value of attribute address.



4
5
6
 
# File 'lib/dnsruby/resource/APL.rb', line 4

def address
  @address
end

#address_lenght ⇒ Object (readonly)

Returns the value of attribute address_lenght.



4
5
6
 
# File 'lib/dnsruby/resource/APL.rb', line 4

def address_lenght
  @address_lenght
end

#af ⇒ Object (readonly)

Returns the value of attribute af.



4
5
6
 
# File 'lib/dnsruby/resource/APL.rb', line 4

def af
  @af
end

#negative ⇒ Object (readonly)

Returns the value of attribute negative.



4
5
6
 
# File 'lib/dnsruby/resource/APL.rb', line 4

def negative
  @negative
end

#prefix_length ⇒ Object (readonly)

Returns the value of attribute prefix_length.



4
5
6
 
# File 'lib/dnsruby/resource/APL.rb', line 4

def prefix_length
  @prefix_length
end

Class Method Details

.create(prefix) ⇒ Object

:nodoc:



6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
 
# File 'lib/dnsruby/resource/APL.rb', line 6

def create(prefix) #:nodoc:
  unless md = Regex.match(prefix)
    raise ArgumentError.new('APL format error')
  end
  negative=md[1]
  af = md[2].to_i
  prefix_length = md[4].to_i
  case af
  when 1
    if prefix_length > 32 ||
       prefix_length < 0
      raise ArgumentError.new('APL IPv4 prefix format error')
    end
    address = IPv4.create(md[3])
  when 2
    if prefix_length > 128 ||
       prefix_length < 0
      raise ArgumentError.new('APL IPv6 prefix format error')
    end
    address = IPv6.create(md[3])
  else
    raise ArgumentError.new('APL address family error')
  end
  address_length = (prefix_length / 8.0).ceil

  Prefix.new(af, prefix_length, negative, address_length, address)
end

Instance Method Details

#put_msg(msg) ⇒ Object

:nodoc: all



48
49
50
51
 
# File 'lib/dnsruby/resource/APL.rb', line 48

def put_msg(msg) #:nodoc: all
  msg.put_pack('nCC',@af,@prefix_length,@flag)
  msg.put_bytes(@address.address[0,@address_length])
end

#to_s ⇒ Object 



44
45
46
 
# File 'lib/dnsruby/resource/APL.rb', line 44

def to_s
  "#{@negative}#{@af}:#{@address}/#{@prefix_length}"
end