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# netmask.rb -- find the netmask of the primary ipaddress
# Copyright (C) 2007 David Schmitt <david@schmitt.edv-bus.at>
# Copyright (C) 2007 Mark 'phips' Phillips
# See LICENSE for the full license granted to you.
# idea and originial source by Mark 'phips' Phillips
def get_netmask
netmask = nil;
ipregex = %r{(\d{1,3}\.){3}\d{1,3}}
ops = nil
case Facter.kernel
when 'Linux'
ops = {
:ifconfig => '/sbin/ifconfig',
:regex => %r{\s+ inet\saddr: #{Facter.ipaddress} .*? Mask: (#{ipregex})}x,
:munge => nil,
}
when 'SunOS'
ops = {
:ifconfig => '/usr/sbin/ifconfig -a',
:regex => %r{\s+ inet\s+? #{Facter.ipaddress} \+? mask (\w{8})}x,
:munge => Proc.new { |mask| mask.scan(/../).collect do |byte| byte.to_i(16) end.join('.') }
}
end
%x{#{ops[:ifconfig]}}.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
Facter.add("netmask") do
confine :kernel => [ :sunos, :linux ]
setcode do
get_netmask
end
end
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