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Contents
require "ipaddr"
module Vagrant
module Util
module NetworkIP
# Returns the network address of the given IP and subnet.
#
# If the IP address is an IPv6 address, subnet should be a prefix
# length such as "64".
#
# @return [String]
def network_address(ip, subnet)
# If this is an IPv6 address, then just mask it
if subnet.to_s =~ /^\d+$/
ip = IPAddr.new(ip)
return ip.mask(subnet.to_i).to_s
end
ip = ip_parts(ip)
netmask = ip_parts(subnet)
# Bitwise-AND each octet to get the network address
# in octets and join each part with a period to get
# the resulting network address.
ip.map { |part| part & netmask.shift }.join(".")
end
protected
# Splits an IP into the four octets and returns each as an
# integer in an array.
#
# @return [Array<Integer>]
def ip_parts(ip)
ip.split(".").map { |i| i.to_i }
end
end
end
end
Version data entries
38 entries across 34 versions & 5 rubygems