Merge remote branch 'immerda/master'

Conflicts:
	lib/puppet/parser/functions/gsub.rb
	lib/puppet/parser/functions/prefix_with.rb
	lib/puppet/parser/functions/sha1.rb
	lib/puppet/parser/functions/slash_escape.rb
	lib/puppet/parser/functions/substitute.rb
	manifests/classes/lsb_release.pp
	manifests/defines/concatenated_file.pp
	manifests/defines/config_file.pp
	manifests/defines/line.pp
	manifests/defines/module_dir.pp
	manifests/defines/module_file.pp
	manifests/defines/replace.pp
	manifests/init.pp

19 files changed, 297 insertions, 266 deletions

diff --git a/lib/puppet/parser/functions/gsub.rb b/lib/puppet/parser/functions/gsub.rb
index 27e6192..e2410ff 100644
--- a/lib/puppet/parser/functions/gsub.rb
+++ b/lib/puppet/parser/functions/gsub.rb
@@ -1,13 +1,9 @@
-#
-# A thin wrapper around the ruby gsub function.
-# 
-#  gsub($string, $pattern, $replacement)
-#
-# will replace all occurrences of $pattern in $string with $replacement.
-# $string can be either a single value or an array. In the latter case, each
-# element of the array will be processed in turn.
-#
 module Puppet::Parser::Functions
+	# thin wrapper around the ruby gsub function
+	# gsub($string, $pattern, $replacement) will replace all occurrences of
+	# $pattern in $string with $replacement. $string can be either a singel
+	# value or an array. In the latter case, each element of the array will
+	# be processed in turn.
 	newfunction(:gsub, :type => :rvalue) do |args|
 		if args[0].is_a?(Array)
 			args[0].collect do |val|
diff --git a/lib/puppet/parser/functions/hostname.rb b/lib/puppet/parser/functions/hostname.rb
new file mode 100644
index 0000000..7bc477f
--- /dev/null
+++ b/lib/puppet/parser/functions/hostname.rb
@@ -0,0 +1,13 @@
+# get an uniq array of ipaddresses for a hostname
+require 'resolv'
+
+module Puppet::Parser::Functions
+	newfunction(:hostname, :type => :rvalue) do |args|
+        res = Array.new
+        Resolv::DNS.new.each_address(args[0]){ |addr|
+            res << addr
+        }
+        res.uniq
+	end
+end
+
diff --git a/lib/puppet/parser/functions/prefix_with.rb b/lib/puppet/parser/functions/prefix_with.rb
index 5a12986..6e64a4a 100644
--- a/lib/puppet/parser/functions/prefix_with.rb
+++ b/lib/puppet/parser/functions/prefix_with.rb
@@ -1,15 +1,5 @@
-# Prefixes arguments 2..n with first argument.
-#
-#  prefix_with(string prefix, string[] arguments) : string[]
-#
-# Example:
-#
-#  prefix_with("php-", [ "blah", "foo" ])
-#
-# will result in this array:
-#
-#  [ "php-blah", "php-foo" ]
-#
+# prefix arguments 2..n with first argument
+
 module Puppet::Parser::Functions
 	newfunction(:prefix_with, :type => :rvalue) do |args|
 		prefix = args.shift
diff --git a/lib/puppet/parser/functions/sha1.rb b/lib/puppet/parser/functions/sha1.rb
new file mode 100644
index 0000000..b5aa813
--- /dev/null
+++ b/lib/puppet/parser/functions/sha1.rb
@@ -0,0 +1,9 @@
+# return the sha1 hash
+require 'digest/sha1'
+
+module Puppet::Parser::Functions
+	newfunction(:sha1, :type => :rvalue) do |args|
+		Digest::SHA1.hexdigest(args[0])
+	end
+end
+
diff --git a/lib/puppet/parser/functions/slash_escape.rb b/lib/puppet/parser/functions/slash_escape.rb
new file mode 100644
index 0000000..04d3b95
--- /dev/null
+++ b/lib/puppet/parser/functions/slash_escape.rb
@@ -0,0 +1,7 @@
+# escape slashes in a String
+module Puppet::Parser::Functions
+	newfunction(:slash_escape, :type => :rvalue) do |args|
+		args[0].gsub(/\//, '\\/')
+	end
+end
+
diff --git a/lib/puppet/parser/functions/strlength.rb b/lib/puppet/parser/functions/strlength.rb
new file mode 100644
index 0000000..147b24a
--- /dev/null
+++ b/lib/puppet/parser/functions/strlength.rb
@@ -0,0 +1,6 @@
+module Puppet::Parser::Functions
+    newfunction(:strlength, :type => :rvalue) do |args|
+       args[0].to_s.length
+    end
+end
+
diff --git a/lib/puppet/parser/functions/substitute.rb b/lib/puppet/parser/functions/substitute.rb
new file mode 100644
index 0000000..4c97def
--- /dev/null
+++ b/lib/puppet/parser/functions/substitute.rb
@@ -0,0 +1,20 @@
+# subsititute($string, $regex, $replacement) : $string
+# subsititute($string[], $regex, $replacement) : $string[]
+#
+# Replace all ocurrences of $regex in $string by $replacement.
+# $regex is interpreted as Ruby regular expression.
+#
+# For long-term portability it is recommended to refrain from using Ruby's
+# extended RE features.
+module Puppet::Parser::Functions
+	newfunction(:substitute, :type => :rvalue) do |args|
+		if args[0].is_a?(Array)
+			args[0].collect do |val|
+				val.gsub(/#{args[1]}/, args[2])
+			end
+		else
+			args[0].gsub(/#{args[1]}/, args[2])
+		end
+	end
+end
+
diff --git a/manifests/classes/lsb_release.pp b/manifests/classes/lsb_release.pp
deleted file mode 100644
index 5745072..0000000
--- a/manifests/classes/lsb_release.pp
+++ /dev/null
@@ -1,49 +0,0 @@
-# common/manifests/classes/lsb_release.pp -- request the installation of
-# lsb_release to get to lsbdistcodename, which is used throughout the manifests
-#
-# Copyright (C) 2007 David Schmitt <david@schmitt.edv-bus.at>
-# See LICENSE for the full license granted to you.
-
-# Changelog:
-# 2007-08-26: micah <micah@riseup.net> reported, that lsb_release can report
-#	nonsensical values for lsbdistcodename; assert_lsbdistcodename now
-#	recognises "n/a" and acts accordingly
-
-# This lightweight class only asserts that $lsbdistcodename is set.
-# If the assertion fails, an error is printed on the server
-# 
-# To fail individual resources on a missing lsbdistcodename, require
-# Exec[assert_lsbdistcodename] on the specific resource
-#
-# This is just one example of how you could avoid evaluation of parts of the
-# manifest, before a bootstrapping class has enabled all the necessary goodies.
-class assert_lsbdistcodename {
-
-	case $lsbdistcodename {
-		'': {
-			err("Please install lsb_release or set facter_lsbdistcodename in the environment of $fqdn")
-			exec { "false # assert_lsbdistcodename": alias => assert_lsbdistcodename, loglevel => err }
-		}
-		'n/a': {
-			case $operatingsystem {
-				"Debian": {
-					err("lsb_release was unable to report your distcodename; This seems to indicate a broken apt/sources.list on $fqdn")
-				}
-				default: {
-					err("lsb_release was unable to report your distcodename; please set facter_lsbdistcodename in the environment of $fqdn")
-				}
-			}
-			exec { "false # assert_lsbdistcodename": alias => assert_lsbdistcodename, loglevel => err }
-		}
-		default: {
-			exec { "true # assert_lsbdistcodename": alias => assert_lsbdistcodename, loglevel => debug }
-			exec { "true # require_lsbdistcodename": alias => require_lsbdistcodename, loglevel => debug }
-		}
-	}
-
-}
-
-# To fail the complete compilation on a missing $lsbdistcodename, include this class
-class require_lsbdistcodename inherits assert_lsbdistcodename {
-	exec { "false # require_lsbdistcodename": require => Exec[require_lsbdistcodename], loglevel => err }
-}
diff --git a/manifests/defines/concatenated_file.pp b/manifests/defines/concatenated_file.pp
index b85456c..491e2c8 100644
--- a/manifests/defines/concatenated_file.pp
+++ b/manifests/defines/concatenated_file.pp
@@ -4,8 +4,6 @@
 # Copyright (C) 2007 David Schmitt <david@schmitt.edv-bus.at>
 # See LICENSE for the full license granted to you.
 
-module_dir { "common/cf": }
-
 # TODO:
 # * create the directory in _part too
 
@@ -24,77 +22,78 @@ module_dir { "common/cf": }
 #
 # Depend on File[$name] to change if and only if its contents change. Notify
 # Exec["concat_${name}"] if you want to force an update.
-# 
+#
 # Usage:
 #  concatenated_file { "/etc/some.conf":
-#  	dir => "/etc/some.conf.d",
+#      dir => "/etc/some.conf.d",
 #  }
 define concatenated_file (
-	# where the snippets are located
-	$dir = '',
-	# a file with content to prepend
-	$header = '',
-	# a file with content to append
-	$footer = '',
-	# default permissions for the target file
-	$mode = 0644, $owner = root, $group = 0
-	)
+    # where the snippets are located
+    $dir = '',
+    # a file with content to prepend
+    $header = '',
+    # a file with content to append
+    $footer = '',
+    # default permissions for the target file
+    $mode = 0644, $owner = root, $group = 0
+    )
 {
+    include common::moduledir::common::cf
 
-	$dir_real = $dir ? { '' => "${name}.d", default => $dir }
+    $dir_real = $dir ? { '' => "${name}.d", default => $dir }
 
-	$tmp_file_name = regsubst($dir_real, '/', '_', 'G')
-	$tmp_file = "${module_dir_path}/${tmp_file_name}"
+    $tmp_file_name = regsubst($dir_real, '/', '_', 'G')
+    $tmp_file = "${common::moduledir::module_dir_path}/${tmp_file_name}"
 
-	if defined(File[$dir_real]) {
-		debug("${dir_real} already defined")
-	} else {
-		file {
-			$dir_real:
-				source => "puppet://$server/modules/common/empty",
-				checksum => mtime,
-				ignore => '.ignore',
-				recurse => true, purge => true, force => true,
-				mode => $mode, owner => $owner, group => $group,
-				notify => Exec["concat_${name}"];
-		}
-	}
+    if defined(File[$dir_real]) {
+        debug("${dir_real} already defined")
+    } else {
+        file {
+            $dir_real:
+                source => "puppet:///modules/common/empty",
+                checksum => mtime,
+                ignore => '.ignore',
+                recurse => true, purge => true, force => true,
+                mode => $mode, owner => $owner, group => $group,
+                notify => Exec["concat_${name}"];
+        }
+    }
 
-	file {
-		$tmp_file:
-			ensure => present, checksum => md5,
-			mode => $mode, owner => $owner, group => $group;
-		# decouple the actual file from the generation process by using a
-		# temporary file and puppet's source mechanism. This ensures that events
-		# for notify/subscribe will only be generated when there is an actual
-		# change.
-		$name:
-			ensure => present, checksum => md5,
-			source => $tmp_file,
-			mode => $mode, owner => $owner, group => $group,
-			require => File[$tmp_file];
-	}
+    file {
+        $tmp_file:
+            ensure => present, checksum => md5,
+            mode => $mode, owner => $owner, group => $group;
+        # decouple the actual file from the generation process by using a
+        # temporary file and puppet's source mechanism. This ensures that events
+        # for notify/subscribe will only be generated when there is an actual
+        # change.
+        $name:
+            ensure => present, checksum => md5,
+            source => $tmp_file,
+            mode => $mode, owner => $owner, group => $group,
+            require => File[$tmp_file];
+    }
 
-	# if there is a header or footer file, add it
-	$additional_cmd = $header ? {
-		'' => $footer ? {
-			'' => '',
-			default => "| cat - '${footer}' "
-		},
-		default => $footer ? { 
-			'' => "| cat '${header}' - ",
-			default => "| cat '${header}' - '${footer}' "
-		}
-	}
+    # if there is a header or footer file, add it
+    $additional_cmd = $header ? {
+        '' => $footer ? {
+            '' => '',
+            default => "| cat - '${footer}' "
+        },
+        default => $footer ? {
+            '' => "| cat '${header}' - ",
+            default => "| cat '${header}' - '${footer}' "
+        }
+    }
 
-	# use >| to force clobbering the target file
-	exec { "concat_${name}":
-		command => "/usr/bin/find ${dir_real} -maxdepth 1 -type f ! -name '*puppettmp' -print0 | sort -z | xargs -0 cat ${additional_cmd} >| ${tmp_file}",
-		subscribe => [ File[$dir_real] ],
-		before => File[$tmp_file],
-		alias => [ "concat_${dir_real}"],
-		loglevel => info
-	}
+    # use >| to force clobbering the target file
+    exec { "concat_${name}":
+        command => "/usr/bin/find ${dir_real} -maxdepth 1 -type f ! -name '*puppettmp' -print0 | sort -z | xargs -0 cat ${additional_cmd} >| ${tmp_file}",
+        subscribe => [ File[$dir_real] ],
+        before => File[$tmp_file],
+        alias => [ "concat_${dir_real}"],
+        loglevel => info
+    }
 
 }
 
@@ -102,16 +101,17 @@ define concatenated_file (
 # Add a snippet called $name to the concatenated_file at $dir.
 # The file can be referenced as File["cf_part_${name}"]
 define concatenated_file_part (
-	$dir, $content = '', $ensure = present,
-	$mode = 0644, $owner = root, $group = 0 
-	)
+    $dir, $content = '', $ensure = present,
+    $mode = 0644, $owner = root, $group = 0
+    )
 {
 
-	file { "${dir}/${name}":
-		ensure => $ensure, content => $content,
-		mode => $mode, owner => $owner, group => $group,
-		alias => "cf_part_${name}",
-		notify => Exec["concat_${dir}"],
-	}
+    file { "${dir}/${name}":
+        ensure => $ensure, content => $content,
+        mode => $mode, owner => $owner, group => $group,
+        alias => "cf_part_${name}",
+        notify => Exec["concat_${dir}"],
+    }
 
 }
+
diff --git a/manifests/defines/config_file.pp b/manifests/defines/config_file.pp
index 781e9ec..d624c10 100644
--- a/manifests/defines/config_file.pp
+++ b/manifests/defines/config_file.pp
@@ -3,56 +3,53 @@
 # See LICENSE for the full license granted to you.
 
 # A simple wrapper to give all configuration files common defaults.
-# 
+#
 # Usage:
-#  config_file { filename:
-#  	content => "....\n",
-#  }
+# config_file { filename:
+#     content => "....\n",
+# }
 #
-# Examples: 
+# Examples:
 #
 # To create the file /etc/vservers/${vs_name}/context with specific
 # content:
 #
-#  config_file {
-#  	"/etc/vservers/${vs_name}/context":
-#  		content => "${context}\n",
-#  		notify => Exec["vs_restart_${vs_name}"],
-#  		require => Exec["vs_create_${vs_name}"];
+# config_file { "/etc/vservers/${vs_name}/context":
+#              content => "${context}\n",
+#              notify => Exec["vs_restart_${vs_name}"],
+#              require => Exec["vs_create_${vs_name}"];
 # }
 #
 # To create the file /etc/apache2/sites-available/munin-stats with the
 # content pulled from a template:
 #
-#  config_file {
-# 		"/etc/apache2/sites-available/munin-stats":
-#  		content => template("apache/munin-stats"),
-#  		require => Package["apache2"],
-#  		notify => Exec["reload-apache2"];
-#  }
-define config_file (
-	$content = '',
-	$source = '',
-	$ensure = 'present')
-{
-	file { $name:
-		ensure => $ensure,
-		# default permissions for config files
-		mode => 0644, owner => root, group => 0,
-		# really detect changes to this file
-		checksum => md5,
-	}
+# config_file { "/etc/apache2/sites-available/munin-stats":
+#              content => template("apache/munin-stats"),
+#              require => Package["apache2"],
+#              notify => Exec["reload-apache2"]
+# }
+
+define config_file ($content = '', $source = '', $ensure = 'present') {
+    file { $name:
+        ensure => $ensure,
+        # keep old versions on the server
+        backup => server,
+        # default permissions for config files
+        mode => 0644, owner => root, group => 0,
+        # really detect changes to this file
+        checksum => md5,
+    }
+
+    case $source {
+        '': { }
+        default: { File[$name] { source => $source } }
+    }
 
-	case $source {
-		'': { }
-		default: { File[$name] { source => $source } }
-	}
+    case $content {
+        '': { }
+        default: { File[$name] { content => $content } }
+    }
 
-	case $content {
-		'': { }
-		default: { File[$name] { content => $content } }
-	}
-				
 }
 
 
diff --git a/manifests/defines/line.pp b/manifests/defines/line.pp
index bc2ece4..ccfa357 100644
--- a/manifests/defines/line.pp
+++ b/manifests/defines/line.pp
@@ -34,24 +34,21 @@
 #  		notify => Service[munin-node],
 #  		require => Package[munin-node];
 #  }
-define line(
-	$file,
-	$line,
-	$ensure = 'present'
-) {
-	case $ensure {
-		default : { err ( "unknown ensure value '${ensure}'" ) }
-		present: {
-			exec { "echo '${line}' >> '${file}'":
-				unless => "grep -qFx '${line}' '${file}'"
-			}
-		}
-		absent: {
-			exec { "perl -ni -e 'print if \$_ ne \"${line}\n\";' '${file}'":
-				onlyif => "grep -qFx '${line}' '${file}'"
-			}
-		}
-	}
+define line($file, $line, $ensure = 'present') {
+  case $ensure {
+    default : { err ( "unknown ensure value '${ensure}'" ) }
+    present: {
+      exec { "echo '${line}' >> '${file}'":
+        unless => "grep -qFx '${line}' '${file}'"
+      }
+    }
+    absent: {
+      $subst_line = regsubst($line,'(/|\.)','\\\1','G')
+      exec { "sed -i '/${subst_line}/d' '${file}'":
+        onlyif => "grep -qFx '${line}' '${file}'"
+      }
+    }
+  }
 }
 
 
diff --git a/manifests/defines/link.pp b/manifests/defines/link.pp
new file mode 100644
index 0000000..e8e4a9f
--- /dev/null
+++ b/manifests/defines/link.pp
@@ -0,0 +1,12 @@
+# common/manifests/defines/link.pp -- create a link
+#
+# Copyleft (C) 2009 immerdaadmin <admin@immerda.ch>
+# See LICENSE for the full license granted to you.
+
+# Usage:
+# link { "/usr/bin/convert": target => "/usr/local/bin/convert" }
+# e.g. equivalent to bash# ln -s /usr/bin/convert /usr/local/bin/convert
+
+define link($target = absent) {
+   file{$name: ensure => $target; }
+}
diff --git a/manifests/defines/module_dir.pp b/manifests/defines/module_dir.pp
index def5c94..227fe71 100644
--- a/manifests/defines/module_dir.pp
+++ b/manifests/defines/module_dir.pp
@@ -1,4 +1,4 @@
-# common/manifests/defines/module_dir.pp -- create a default directory
+# common/manifests/defines/modules_dir.pp -- create a default directory
 # for storing module specific information
 #
 # Copyright (C) 2007 David Schmitt <david@schmitt.edv-bus.at>
@@ -14,29 +14,37 @@
 # purged so that modules do not have to worry about removing cruft.
 # 
 # Usage:
-#  module_dir { ["common", "common/dir1", "common/dir2" ]: }
+# include common::moduledir
+# module_dir { ["common", "common/dir1", "common/dir2" ]: }
+#
+# You may refer to a file in module_dir by using :
+# file { "${common::moduledir::module_dir_path}/somedir/somefile": }
+
 define module_dir (
-		$mode = 0644,
-		$owner = root,
-		$group = 0
-	)
+        $mode = 0644, $owner = root, $group = 0
+    )
 {
-	$dir = "${module_dir_path}/${name}"
-	if defined(File[$dir]) {
-		debug("${dir} already defined")
-	} else {
-		file {
-			$dir:
-				source => [ "puppet://$server/modules/${name}/module_dir", "puppet://$server/modules/common/empty"],
-				checksum => mtime,
-				# ignore the placeholder
-				ignore => '\.ignore', 
-				recurse => true, purge => true, force => true,
-				mode => $mode, owner => $owner, group => $group;
-		}
-	}
+    include common::moduledir
+    $dir = "${common::moduledir::module_dir_path}/${name}"
+    if defined(File[$dir]) {
+        debug("${dir} already defined")
+    } else {
+        file {
+            $dir:
+                source => [ "puppet:///modules/${name}/modules_dir", "puppet:///modules/common/empty"],
+                checksum => mtime,
+                # ignore the placeholder
+                ignore => '.ignore',
+                recurse => true, purge => true, force => true,
+                mode => $mode, owner => $owner, group => $group;
+        }
+    }
 }
 
-# Use this variable to reference the base path. Thus you are safe from any
-# changes.
-$module_dir_path = '/var/lib/puppet/modules'
+# alias for compatibility
+define modules_dir (
+        $mode = 0644, $owner = root, $group = 0
+    )
+{
+  module_dir { $name: mode => $mode, owner => $owner, group => $group }
+}
diff --git a/manifests/defines/module_file.pp b/manifests/defines/module_file.pp
index 9074589..70e5cbf 100644
--- a/manifests/defines/module_file.pp
+++ b/manifests/defines/module_file.pp
@@ -1,5 +1,5 @@
-# common/manifests/defines/module_file.pp -- use an already defined module_dir
-# to store module specific files
+# common/manifests/defines/modules_file.pp -- use a modules_dir to store module
+# specific files
 #
 # Copyright (C) 2007 David Schmitt <david@schmitt.edv-bus.at>
 # See LICENSE for the full license granted to you.
@@ -7,18 +7,41 @@
 # Put a file into module-local storage.
 #
 # Usage:
-#  module_file {
-#  	"module/file":
-# 			source => "puppet://..",
+# modules_file { "module/file":
+#     source => "puppet:///...",
+#     mode   => 644,   # default
+#     owner  => root,  # default
+#     group  => 0,     # default
 # }
 define module_file (
-		$source,
-		$mode = 0644, $owner = root, $group = 0
-	)
+	$source,
+	$ensure = present,
+	$alias = undef,
+	$mode = 0644, $owner = root, $group = 0
+    )
 {
-	file {
-		"${module_dir_path}/${name}":
-			source => $source,
-			mode => $mode, owner => $owner, group => $group;
-	}
+    include common::moduledir
+    file {
+        "${common::moduledir::module_dir_path}/${name}":
+            source => $source,
+            ensure => $ensure,
+            alias => $alias,
+            mode => $mode, owner => $owner, group => $group;
+    }
+}
+
+# alias for compatibility
+define modules_file (
+    $source,
+	  $ensure = present,
+	  $alias = undef,
+    $mode = 0644, $owner = root, $group = 0
+  )
+{
+  module_file { $name:
+      source => $source,
+      ensure => $ensure,
+      alias => $alias,
+      mode => $mode, owner => $owner, group => $group
+      }
 }
diff --git a/manifests/defines/replace.pp b/manifests/defines/replace.pp
index c9a98bd..f7da3b4 100644
--- a/manifests/defines/replace.pp
+++ b/manifests/defines/replace.pp
@@ -14,7 +14,7 @@
 # 
 # Usage:
 #
-# replace { description: 
+# replace { description:
 #           file => "filename",
 #           pattern => "regexp",
 #           replacement => "replacement"
@@ -23,19 +23,18 @@
 # To replace the current port in /etc/munin/munin-node.conf
 # with a new port, but only disturbing the file when needed:
 #
-#  replace {
-#  	set_munin_node_port:
-#  		file => "/etc/munin/munin-node.conf",
-#  		pattern => "^port (?!$port)[0-9]*",
-#  		replacement => "port $port"
-#  }  
-define replace($file, $pattern, $replacement) {
-	$pattern_no_slashes = regsubst($pattern, '/', '\\/', 'G', 'U')
-	$replacement_no_slashes = regsubst($replacement, '/', '\\/', 'G', 'U')
+# replace { set_munin_node_port:
+#     file => "/etc/munin/munin-node.conf",
+#     pattern => "^port (?!$port)[0-9]*",
+#     replacement => "port $port"
+# }
 
-	exec { "replace_${pattern}_${file}":
-		command => "/usr/bin/perl -pi -e 's/${pattern_no_slashes}/${replacement_no_slashes}/' '${file}'",
-		onlyif => "/usr/bin/perl -ne 'BEGIN { \$ret = 1; } \$ret = 0 if /${pattern_no_slashes}/ && ! /\\Q${replacement_no_slashes}\\E/; END { exit \$ret; }' '${file}'",
-		alias => "exec_$name",
-	}
+define replace($file, $pattern, $replacement) {
+    $pattern_no_slashes = slash_escape($pattern)
+    $replacement_no_slashes = slash_escape($replacement)
+    exec { "replace_${pattern}_${file}":
+        command => "/usr/bin/perl -pi -e 's/${pattern_no_slashes}/${replacement_no_slashes}/' '${file}'",
+        onlyif => "/usr/bin/perl -ne 'BEGIN { \$ret = 1; } \$ret = 0 if /${pattern_no_slashes}/ && ! /\\Q${replacement_no_slashes}\\E/; END { exit \$ret; }' '${file}'",
+        alias => "exec_$name",
+    }
 }
diff --git a/manifests/init.pp b/manifests/init.pp
index f767030..3a9faf5 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -3,23 +3,4 @@
 # See LICENSE for the full license granted to you.
 
 import "defines/*.pp"
-import "classes/*.pp"
-
-module_dir { [ 'common' ]: }
-
-file {
-		 # Module programmers can use /var/lib/puppet/modules/$modulename to save
-		 # module-local data, e.g. for constructing config files. See module_dir
-		 # for details
-       "/var/lib/puppet/modules":
-               ensure => directory,
-               source => "puppet://$server/modules/common/modules",
-               ignore => ".ignore",
-               recurse => true, purge => true, force => true,
-               mode => 0755, owner => root, group => 0;
-}
-
-# common packages
-class pkg::openssl { package { openssl: ensure => installed } }
-class pkg::rsync { package { rsync: ensure => installed } }
 
diff --git a/manifests/moduledir.pp b/manifests/moduledir.pp
new file mode 100644
index 0000000..df83e60
--- /dev/null
+++ b/manifests/moduledir.pp
@@ -0,0 +1,15 @@
+class common::moduledir {
+    # Use this variable to reference the base path. Thus you are safe from any
+    # changes.
+    $module_dir_path = '/var/lib/puppet/modules'
+
+    # Module programmers can use /var/lib/puppet/modules/$modulename to save
+    # module-local data, e.g. for constructing config files
+    file{$module_dir_path:
+        ensure => directory,
+        source => "puppet:///modules/common/modules/",
+        ignore => '.ignore',
+        recurse => true, purge => true, force => true,
+        mode => 0755, owner => root, group => 0;
+    }
+}
diff --git a/manifests/moduledir/common.pp b/manifests/moduledir/common.pp
new file mode 100644
index 0000000..c615f84
--- /dev/null
+++ b/manifests/moduledir/common.pp
@@ -0,0 +1,3 @@
+class common::moduledir::common{
+    module_dir{'common': }
+}
diff --git a/manifests/moduledir/common/cf.pp b/manifests/moduledir/common/cf.pp
new file mode 100644
index 0000000..b3c089b
--- /dev/null
+++ b/manifests/moduledir/common/cf.pp
@@ -0,0 +1,4 @@
+class common::moduledir::common::cf {
+    include ::common::moduledir::common
+    module_dir{'common/cf': }
+}