Class: Resolv::IPv6
Relationships & Source Files | |
Inherits: | Object |
Defined in: | lib/resolv.rb |
Overview
A DNS IPv6
address.
Constant Summary
-
Regex =
A composite
IPv6
address Regexp./ (?:#{Regex_8Hex}) | (?:#{Regex_CompressedHex}) | (?:#{Regex_6Hex4Dec}) | (?:#{Regex_CompressedHex4Dec})/x
-
Regex_6Hex4Dec =
IPv4 mapped
IPv6
address format a:b:c:d:e:f:w.x.y.z/\A ((?:[0-9A-Fa-f]{1,4}:){6,6}) (\d)\.(\d)\.(\d)\.(\d) \z/x
-
Regex_8Hex =
IPv6
address format a:b:c:d:e:f:g:h/\A (?:[0-9A-Fa-f]{1,4}:){7} [0-9A-Fa-f]{1,4} \z/x
-
Regex_CompressedHex =
Compressed IPv6 address format a::b
/\A ((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?) :: ((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?) \z/x
-
Regex_CompressedHex4Dec =
Compressed IPv4 mapped
IPv6
address format a::b:w.x.y.z/\A ((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?) :: ((?:[0-9A-Fa-f]{1,4}:)*) (\d)\.(\d)\.(\d)\.(\d) \z/x
Class Method Summary
-
.create(arg)
Creates a new
IPv6
address fromarg
which may be:
Instance Attribute Summary
-
#address
readonly
The raw
IPv6
address as a String.
Instance Method Summary
Class Method Details
.create(arg)
Creates a new IPv6
address from arg
which may be:
- IPv6
-
returns
arg
. - String
-
arg
must match one of the IPv6::Regex* constants
# File 'lib/resolv.rb', line 2485
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
Instance Attribute Details
#address (readonly)
The raw IPv6
address as a String.
# File 'lib/resolv.rb', line 2541
attr_reader :address
Instance Method Details
#to_name
Turns this IPv6
address into a DNS::Name.