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Contents
# frozen_string_literal: true
require 'ipaddr'
module Facter
module Util
module Linux
class IfInet6
class << self
IFA_FLAGS = {
'temporary' => 0x01,
'noad' => 0x02,
'optimistic' => 0x04,
'dadfailed' => 0x08,
'homeaddress' => 0x10,
'deprecated' => 0x20,
'tentative' => 0x40,
'permanent' => 0x80
# /proc/net/if_inet6 only supports the old 8bit flags
# I have been unable to find a simple solution to accesses
# the full 32bit flags. netlink is all I can could find but
# that will likely be ugly
# 'managetempaddr' => 0x100,
# 'noprefixroute' => 0x200,
# 'mcautojoin' => 0x400,
# 'stableprivacy' => 0x800
}.freeze
def read_flags
return read_flags_from_proc if File.exist?('/proc/net/if_inet6')
{}
end
private
def read_flags_from_proc
flags = init_flags
Facter::Util::FileHelper.safe_read('/proc/net/if_inet6', nil).each_line do |line|
iface = line.split
next unless iface.size == 6
ip = parse_ip(iface[0])
flags[iface[5]][ip] = parse_ifa_flags(iface[4])
end
flags
end
def init_flags
Hash.new { |h1, k1| h1[k1] = Hash.new { |h2, k2| h2[k2] = [] } }
end
def parse_ifa_flags(flag)
flag = flag.hex
flags = []
IFA_FLAGS.each_pair do |name, value|
next if (flag & value).zero?
flags << name
end
flags
end
def parse_ip(ip)
# The ip address in if_net6 is a long string wit no colons
ip = ip.scan(/(\h{4})/).join(':')
IPAddr.new(ip).to_s
end
end
end
end
end
end
Version data entries
31 entries across 31 versions & 1 rubygems