Sha256: 007b9bde2c9530807bd55cec4df32477d36d2b668b0b69e63ec98cf3bb4b95e5
Contents?: true
Size: 1.81 KB
Versions: 7
Compression:
Stored size: 1.81 KB
Contents
# This file is part of PacketGen
# See https://github.com/sdaubert/packetgen for more informations
# Copyright (C) 2016 Sylvain Daubert <sylvain.daubert@laposte.net>
# This program is published under MIT license.
# frozen_string_literal: true
module PacketGen
module Header
class IP
# IP address, as a group of 4 bytes
# @author Sylvain Daubert
class Addr < Types::Fields
# @!attribute a1
# @return [Integer] IP address first byte
define_field :a1, Types::Int8
# @!attribute a2
# @return [Integer] IP address seconf byte
define_field :a2, Types::Int8
# @!attribute a3
# @return [Integer] IP address third byte
define_field :a3, Types::Int8
# @!attribute a4
# @return [Integer] IP address fourth byte
define_field :a4, Types::Int8
IPV4_ADDR_REGEX = /^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/
# Read a dotted address
# @param [String] str
# @return [self]
def from_human(str)
return self if str.nil?
m = str.match(IPV4_ADDR_REGEX)
if m
self[:a1].read m[1].to_i
self[:a2].read m[2].to_i
self[:a3].read m[3].to_i
self[:a4].read m[4].to_i
end
self
end
# Addr in human readable form (dotted format)
# @return [String]
def to_human
fields.map { |f| self[f].to_i.to_s }.join('.')
end
# Addr as an integer
# @return [Integer]
def to_i
(self.a1 << 24) | (self.a2 << 16) | (self.a3 << 8) |
self.a4
end
# Return true if this address is a multicast one
# @return [Boolean]
def mcast?
self.a1 >= 224 && self.a1 <= 239
end
end
end
end
end
Version data entries
7 entries across 7 versions & 1 rubygems