diff --git a/util/manifests/init.pp b/util/manifests/init.pp
index 025e60d..2b90342 100644
--- a/util/manifests/init.pp
+++ b/util/manifests/init.pp
@@ -63,6 +63,55 @@ define util::extract::tar($source, $ensure=present, $strip=0, $preserve=false) {
 
 }
 
+# Extract tar package.
+#
+# === Parameters
+#
+#   $name:
+#       Destination directory.
+#   $ensure:
+#       If 'latest', remove target and re-extract when source file changes.
+#   $source:
+#       File to extract.
+#
+# === Sample usage
+#
+#util::extract::zip { "/usr/lib/firefox-addons/extensions/{73a6fe31-595d-460b-a920-fcc0f8843232}":
+#    source => "/usr/local/src/noscript.xpi",
+#}
+#
+define util::extract::zip($source, $ensure=present) {
+
+    case $ensure {
+        latest: {
+            exec { "zip-rmdir-${name}":
+                path        => "/bin:/usr/bin:/sbin:/usr/sbin",
+                command     => "rm -fr ${name}",
+                before      => File["${name}"],
+                subscribe   => File["${source}"],
+                refreshonly => true,
+            }
+        }
+    }
+
+    $command = "unzip ${source} -d ${name}"
+
+    file { "${name}":
+        ensure => directory,
+        mode   => 0755,
+        owner  => root,
+        group  => root,
+    }
+
+    exec { "zip-extract-${name}":
+        path    => "/bin:/usr/bin:/sbin:/usr/sbin",
+        command => $command,
+        require => File["${name}"],
+        unless  => "test -n \"$(ls -A ${name})\"",
+    }
+
+}
+
 
 # Apply patch.
 #