Add LDAP support

[perso/Immae/Projets/Puppet.git] / modules / base_installation / lib / puppet / parser / functions / generate_password.rb

diff --git a/modules/base_installation/lib/puppet/parser/functions/generate_password.rb b/modules/base_installation/lib/puppet/parser/functions/generate_password.rb
new file mode 100644 (file)
index 0000000..384d81b
--- /dev/null
+++ b/modules/base_installation/lib/puppet/parser/functions/generate_password.rb
@@ -0,0 +1,31 @@
+module Puppet::Parser::Functions
+  newfunction(:generate_password, :type => :rvalue, :doc => <<-EOS
+Returns a semi-random string based on a seed and a value. Will always generate the same value with the same entry.
+Prototype:
+  generate_password(length, seed_file, password_key)
+EOS
+) do |*arguments|
+  arguments = arguments.shift if arguments.first.is_a?(Array)
+
+  raise Puppet::ParseError, "generate_password(): Wrong number of arguments " +
+    "given (#{arguments.size} for 3)" if arguments.size != 3
+
+  size = arguments.shift
+  seed_file = arguments.shift
+  password_key = arguments.shift
+
+  unless size.class.ancestors.include?(Numeric) or size.is_a?(String)
+    raise Puppet::ParseError, 'generate_password(): Requires a numeric first argument'
+  end
+
+  size = size.to_i
+
+  set = ('a' .. 'z').to_a + ('A' .. 'Z').to_a + ('0' .. '9').to_a
+
+  key = "#{File.open(seed_file).read}:#{password_key}"
+
+  size.times.collect do |i|
+    set[OpenSSL::HMAC.hexdigest(OpenSSL::Digest.new('sha256'), key, i.to_s).to_i(16) % set.size]
+  end.join
+end
+end