denyhosts: Add support for whitelisting hosts.

denyhosts/manifests/init.pp

@@ -1,12 +1,30 @@
 
 # Install DenyHosts
 #
-class denyhosts {
+# === Parameters
+#
+#   $whitelist:
+#       Source to file containing whitelisted IP addresses. See
+#       http://denyhosts.sourceforge.net/faq.html#allowed
+#
+class denyhosts($whitelist = undef) {
 
     package { "denyhosts":
         ensure => installed,
     }
 
+    if $whitelist {
+        file { "/var/lib/denyhosts/allowed-hosts":
+            ensure  => present,
+            source  => $whitelist,
+            mode    => "0644",
+            owner   => "root",
+            group   => "root",
+            require => Package["denyhosts"],
+            notify  => Service["denyhosts"],
+        }
+    }
+
     service { "denyhosts":
         ensure  => running,
         enable  => true,