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#
# str2saltedsha512.rb
#
module Puppet::Parser::Functions
newfunction(:str2saltedsha512, :type => :rvalue, :doc => <<-EOS
This converts a string to a salted-SHA512 password hash (which is used for
OS X versions >= 10.7). Given any simple string, you will get a hex version
of a salted-SHA512 password hash that can be inserted into your Puppet
manifests as a valid password attribute.
EOS
) do |arguments|
require 'digest/sha2'
raise(Puppet::ParseError, "str2saltedsha512(): Wrong number of arguments passed (#{arguments.size} but we require 1)") if arguments.size != 1
password = arguments[0]
unless password.is_a?(String)
raise(Puppet::ParseError, "str2saltedsha512(): Requires a String argument, you passed: #{password.class}")
end
seedint = rand(2**31 - 1)
seedstring = Array(seedint).pack("L")
saltedpass = Digest::SHA512.digest(seedstring + password)
(seedstring + saltedpass).unpack('H*')[0]
end
end
# vim: set ts=2 sw=2 et :
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