module-postgresql/lib/puppet/parser/functions/postgresql_escape.rb

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require 'digest/md5'
module Puppet::Parser::Functions
newfunction(:postgresql_escape, :type => :rvalue, :doc => <<-EOS
Safely escapes a string using $$ using a random tag which should be consistent
EOS
) do |args|
raise(Puppet::ParseError, "postgresql_escape(): Wrong number of arguments " +
"given (#{args.size} for 1)") if args.size != 1
password = args[0]
if password !~ /\$\$/
retval = "$$#{password}$$"
else
escape = Digest::MD5.hexdigest(password)[0..5].gsub(/\d/,'')
until password !~ /#{escape}/
escape = Digest::MD5.hexdigest(escape)[0..5].gsub(/\d/,'')
end
retval = "$#{escape}$#{password}$#{escape}$"
end
retval
end
end