Class: Resolv::IPv4

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

Constant Summary collapse

Regex = 
/\A(\d+)\.(\d+)\.(\d+)\.(\d+)\z/

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(address) ⇒ IPv4

Returns a new instance of IPv4.



1781
1782
1783
1784
1785
1786
 
# File 'lib/resolv.rb', line 1781

def initialize(address)
  unless address.kind_of?(String) && address.length == 4
    raise ArgumentError.new('IPv4 address must be 4 bytes')
  end
  @address = address
end

Instance Attribute Details

#address ⇒ Object (readonly)

Returns the value of attribute address



1787
1788
1789
 
# File 'lib/resolv.rb', line 1787

def address
  @address
end

Class Method Details

.create(arg) ⇒ Object 



1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
 
# File 'lib/resolv.rb', line 1763

def self.create(arg)
  case arg
  when IPv4
    return arg
  when Regex
    if (0..255) === (a = $1.to_i) &&
       (0..255) === (b = $2.to_i) &&
       (0..255) === (c = $3.to_i) &&
       (0..255) === (d = $4.to_i)
      return self.new([a, b, c, d].pack("CCCC"))
    else
      raise ArgumentError.new("IPv4 address with invalid value: " + arg)
    end
  else
    raise ArgumentError.new("cannot interpret as IPv4 address: #{arg.inspect}")
  end
end

Instance Method Details

#==(other) ⇒ Object 



1802
1803
1804
 
# File 'lib/resolv.rb', line 1802

def ==(other)
  return @address == other.address
end

#eql?(other) ⇒ Boolean

Returns:

  • (Boolean) 


1806
1807
1808
 
# File 'lib/resolv.rb', line 1806

def eql?(other)
  return self == other
end

#hash ⇒ Object 



1810
1811
1812
 
# File 'lib/resolv.rb', line 1810

def hash
  return @address.hash
end

#inspect ⇒ Object 



1793
1794
1795
 
# File 'lib/resolv.rb', line 1793

def inspect
  return "#<#{self.class} #{self.to_s}>"
end

#to_name ⇒ Object 



1797
1798
1799
1800
 
# File 'lib/resolv.rb', line 1797

def to_name
  return DNS::Name.create(
    '%d.%d.%d.%d.in-addr.arpa.' % @address.unpack('CCCC').reverse)
end

#to_s ⇒ Object 



1789
1790
1791
 
# File 'lib/resolv.rb', line 1789

def to_s
  return sprintf("%d.%d.%d.%d", *@address.unpack("CCCC"))
end