Class | Resolv::IPv6 |
In: |
lib/resolv.rb
|
Parent: | Object |
A Resolv::DNS IPv6 address.
Regex_8Hex | = | /\A (?:[0-9A-Fa-f]{1,4}:){7} [0-9A-Fa-f]{1,4} \z/x | IPv6 address format a:b:c:d:e:f:g:h | |
Regex_CompressedHex | = | /\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 | Compressed IPv6 address format a::b | |
Regex_6Hex4Dec | = | /\A ((?:[0-9A-Fa-f]{1,4}:){6,6}) (\d+)\.(\d+)\.(\d+)\.(\d+) \z/x | IPv4 mapped IPv6 address format a:b:c:d:e:f:w.x.y.z | |
Regex_CompressedHex4Dec | = | /\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 | Compressed IPv4 mapped IPv6 address format a::b:w.x.y.z | |
Regex | = | / (?:#{Regex_8Hex}) | (?:#{Regex_CompressedHex}) | (?:#{Regex_6Hex4Dec}) | (?:#{Regex_CompressedHex4Dec})/x | A composite IPv6 address Regexp. |
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 2189 2189: def self.create(arg) 2190: case arg 2191: when IPv6 2192: return arg 2193: when String 2194: address = '' 2195: if Regex_8Hex =~ arg 2196: arg.scan(/[0-9A-Fa-f]+/) {|hex| address << [hex.hex].pack('n')} 2197: elsif Regex_CompressedHex =~ arg 2198: prefix = $1 2199: suffix = $2 2200: a1 = '' 2201: a2 = '' 2202: prefix.scan(/[0-9A-Fa-f]+/) {|hex| a1 << [hex.hex].pack('n')} 2203: suffix.scan(/[0-9A-Fa-f]+/) {|hex| a2 << [hex.hex].pack('n')} 2204: omitlen = 16 - a1.length - a2.length 2205: address << a1 << "\0" * omitlen << a2 2206: elsif Regex_6Hex4Dec =~ arg 2207: prefix, a, b, c, d = $1, $2.to_i, $3.to_i, $4.to_i, $5.to_i 2208: if (0..255) === a && (0..255) === b && (0..255) === c && (0..255) === d 2209: prefix.scan(/[0-9A-Fa-f]+/) {|hex| address << [hex.hex].pack('n')} 2210: address << [a, b, c, d].pack('CCCC') 2211: else 2212: raise ArgumentError.new("not numeric IPv6 address: " + arg) 2213: end 2214: elsif Regex_CompressedHex4Dec =~ arg 2215: prefix, suffix, a, b, c, d = $1, $2, $3.to_i, $4.to_i, $5.to_i, $6.to_i 2216: if (0..255) === a && (0..255) === b && (0..255) === c && (0..255) === d 2217: a1 = '' 2218: a2 = '' 2219: prefix.scan(/[0-9A-Fa-f]+/) {|hex| a1 << [hex.hex].pack('n')} 2220: suffix.scan(/[0-9A-Fa-f]+/) {|hex| a2 << [hex.hex].pack('n')} 2221: omitlen = 12 - a1.length - a2.length 2222: address << a1 << "\0" * omitlen << a2 << [a, b, c, d].pack('CCCC') 2223: else 2224: raise ArgumentError.new("not numeric IPv6 address: " + arg) 2225: end 2226: else 2227: raise ArgumentError.new("not numeric IPv6 address: " + arg) 2228: end 2229: return IPv6.new(address) 2230: else 2231: raise ArgumentError.new("cannot interpret as IPv6 address: #{arg.inspect}") 2232: end 2233: end
Turns this IPv6 address into a Resolv::DNS::Name.
# File lib/resolv.rb, line 2264 2264: def to_name 2265: return DNS::Name.new( 2266: @address.unpack("H32")[0].split(//).reverse + ['ip6', 'arpa']) 2267: end