def self.get_netmask
netmask = nil;
ipregex = %r{(\d{1,3}\.){3}\d{1,3}}
ops = nil
case Facter.value(:kernel)
when 'Linux'
ops = {
:ifconfig_opts => ['2>/dev/null'],
:regex => %r{\s+ inet\saddr: #{Facter.ipaddress} .*? Mask: (#{ipregex})}x,
:munge => nil,
}
when 'SunOS'
ops = {
:ifconfig_opts => ['-a'],
:regex => %r{\s+ inet \s #{Facter.ipaddress} \s netmask \s (\w{8})}x,
:munge => Proc.new { |mask| mask.scan(/../).collect do |byte| byte.to_i(16) end.join('.') }
}
when 'FreeBSD','NetBSD','OpenBSD', 'Darwin', 'GNU/kFreeBSD', 'DragonFly'
ops = {
:ifconfig_opts => ['-a'],
:regex => %r{\s+ inet \s #{Facter.ipaddress} \s netmask \s 0x(\w{8})}x,
:munge => Proc.new { |mask| mask.scan(/../).collect do |byte| byte.to_i(16) end.join('.') }
}
end
Facter::Util::IP.exec_ifconfig(ops[:ifconfig_opts]).split(/\n/).collect do |line|
matches = line.match(ops[:regex])
if !matches.nil?
if ops[:munge].nil?
netmask = matches[1]
else
netmask = ops[:munge].call(matches[1])
end
end
end
netmask
end