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-rw-r--r--lib/puppet/parser/functions/str2saltedsha512.rb32
-rw-r--r--spec/unit/puppet/parser/functions/str2saltedsha512_spec.rb51
2 files changed, 83 insertions, 0 deletions
diff --git a/lib/puppet/parser/functions/str2saltedsha512.rb b/lib/puppet/parser/functions/str2saltedsha512.rb
new file mode 100644
index 0000000..7fe7b01
--- /dev/null
+++ b/lib/puppet/parser/functions/str2saltedsha512.rb
@@ -0,0 +1,32 @@
+#
+# 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 :
diff --git a/spec/unit/puppet/parser/functions/str2saltedsha512_spec.rb b/spec/unit/puppet/parser/functions/str2saltedsha512_spec.rb
new file mode 100644
index 0000000..11485aa
--- /dev/null
+++ b/spec/unit/puppet/parser/functions/str2saltedsha512_spec.rb
@@ -0,0 +1,51 @@
+#!/usr/bin/env rspec
+require 'spec_helper'
+
+describe "the str2saltedsha512 function" do
+ before :all do
+ Puppet::Parser::Functions.autoloader.loadall
+ end
+
+ before :each do
+ @scope = Puppet::Parser::Scope.new
+ end
+
+ it "should exist" do
+ Puppet::Parser::Functions.function("str2saltedsha512").should == "function_str2saltedsha512"
+ end
+
+ it "should raise a ParseError if there is less than 1 argument" do
+ expect { @scope.function_str2saltedsha512([]) }.should( raise_error(Puppet::ParseError) )
+ end
+
+ it "should raise a ParseError if there is more than 1 argument" do
+ expect { @scope.function_str2saltedsha512(['foo', 'bar', 'baz']) }.should( raise_error(Puppet::ParseError) )
+ end
+
+ it "should return a salted-sha512 password hash 136 characters in length" do
+ result = @scope.function_str2saltedsha512(["password"])
+ result.length.should(eq(136))
+ end
+
+ it "should raise an error if you pass a non-string password" do
+ expect { @scope.function_str2saltedsha512([1234]) }.should( raise_error(Puppet::ParseError) )
+ end
+
+ it "should generate a valid password" do
+ # Allow the function to generate a password based on the string 'password'
+ password_hash = @scope.function_str2saltedsha512(["password"])
+
+ # Separate the Salt and Password from the Password Hash
+ salt = password_hash[0..7]
+ password = password_hash[8..-1]
+
+ # Convert the Salt and Password from Hex to Binary Data
+ str_salt = Array(salt.lines).pack('H*')
+ str_password = Array(password.lines).pack('H*')
+
+ # Combine the Binary Salt with 'password' and compare the end result
+ saltedpass = Digest::SHA512.digest(str_salt + 'password')
+ result = (str_salt + saltedpass).unpack('H*')[0]
+ result.should == password_hash
+ end
+end