added str2saltedsha1.rb

1 files changed, 32 insertions, 0 deletions

diff --git a/lib/puppet/parser/functions/str2saltedsha1.rb b/lib/puppet/parser/functions/str2saltedsha1.rb
new file mode 100644
index 0000000..e51a861
--- /dev/null
+++ b/lib/puppet/parser/functions/str2saltedsha1.rb
@@ -0,0 +1,32 @@
+#
+# str2saltedsha1.rb
+#
+
+module Puppet::Parser::Functions
+  newfunction(:str2saltedsha1, :type => :rvalue, :doc => <<-EOS
+This converts a string to a salted-SHA1 password hash (which is used for
+OS X versions >= 10.7). Given any simple string, you will get a hex version
+of a salted-SHA1 password hash that can be inserted into your Puppet
+manifests as a valid password attribute.
+    EOS
+  ) do |arguments|
+    require 'digest/sha2'
+
+    raise(Puppet::ParseError, "str2saltedsha1(): 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, 'str2saltedsha1(): Requires a ' +
+        "String argument, you passed: #{password.class}")
+    end
+
+    seedint    = rand(2**31 - 1)
+    seedstring = Array(seedint).pack("L")
+    saltedpass = Digest::SHA1.digest(seedstring + password)
+    (seedstring + saltedpass).unpack('H*')[0]
+  end
+end
+
+# vim: set ts=2 sw=2 et :