From e97a9d3800b173375a630e18e4b1aa0894eb96e1 Mon Sep 17 00:00:00 2001
From: Micah <micah@leap.se>
Date: Tue, 20 Oct 2015 17:14:21 -0400
Subject: Add basic DKIM support, this requires changes in leap_cli detailed in
 issue #5924

Change-Id: I6aa1e7751633407d441cbc6436d8426d37dbbfa7
---
 puppet/modules/opendkim/manifests/init.pp          | 38 +++++++++++++++++++
 puppet/modules/opendkim/templates/opendkim.conf    | 44 ++++++++++++++++++++++
 .../modules/site_config/manifests/x509/dkim/key.pp | 13 +++++++
 puppet/modules/site_postfix/manifests/mx.pp        |  2 +-
 4 files changed, 96 insertions(+), 1 deletion(-)
 create mode 100644 puppet/modules/opendkim/manifests/init.pp
 create mode 100644 puppet/modules/opendkim/templates/opendkim.conf
 create mode 100644 puppet/modules/site_config/manifests/x509/dkim/key.pp

diff --git a/puppet/modules/opendkim/manifests/init.pp b/puppet/modules/opendkim/manifests/init.pp
new file mode 100644
index 00000000..9e67569e
--- /dev/null
+++ b/puppet/modules/opendkim/manifests/init.pp
@@ -0,0 +1,38 @@
+# configure opendkim service (#5924)
+class opendkim {
+
+  $domain_hash = hiera('domain')
+  $domain      = $domain_hash['full_suffix']
+  $dkim        = hiera('dkim')
+  $selector    = $dkim['dkim_selector']
+
+  include site_config::x509::dkim::key
+  $dkim_key    = "${x509::variables::keys}/dkim.key"
+
+  ensure_packages(['opendkim', 'libopendkim7', 'libvbr2'])
+
+  # postfix user needs to be in the opendkim group
+  # in order to access the opendkim socket located at:
+  # local:/var/run/opendkim/opendkim.sock
+  user { 'postfix':
+    groups => 'opendkim';
+  }
+
+  service { 'opendkim':
+    ensure     => running,
+    enable     => true,
+    hasstatus  => true,
+    hasrestart => true,
+    require    => Class['Site_config::X509::Dkim::Key'],
+    subscribe  => File[$dkim_key];
+  }
+
+  file { '/etc/opendkim.conf':
+    ensure  => present,
+    content => template('opendkim/opendkim.conf'),
+    mode    => '0644',
+    owner   => root,
+    group   => root,
+    notify  => Service['opendkim'],
+    require => Package['opendkim'];
+}
diff --git a/puppet/modules/opendkim/templates/opendkim.conf b/puppet/modules/opendkim/templates/opendkim.conf
new file mode 100644
index 00000000..46ddb7a8
--- /dev/null
+++ b/puppet/modules/opendkim/templates/opendkim.conf
@@ -0,0 +1,44 @@
+# This is a basic configuration that can easily be adapted to suit a standard
+# installation. For more advanced options, see opendkim.conf(5) and/or
+# /usr/share/doc/opendkim/examples/opendkim.conf.sample.
+
+# Log to syslog
+Syslog                  yes
+SyslogSuccess           yes
+LogWhy                  no
+# Required to use local socket with MTAs that access the socket as a non-
+# privileged user (e.g. Postfix)
+UMask                   002
+
+Domain                  <%= @domain %>
+SubDomains              yes
+
+# set internal hosts to all the known hosts, like mydomains?
+
+# can we generate a larger key and get it in dns?
+KeyFile                 <%= @dkim_key %>
+
+# what selector do we use?
+Selector                <%= @selector %>
+
+# Commonly-used options; the commented-out versions show the defaults.
+Canonicalization        relaxed
+#Mode                   sv
+#ADSPDiscard            no
+
+# Always oversign From (sign using actual From and a null From to prevent
+# malicious signatures header fields (From and/or others) between the signer
+# and the verifier.  From is oversigned by default in the Debian pacakge
+# because it is often the identity key used by reputation systems and thus
+# somewhat security sensitive.
+OversignHeaders         From
+
+# List domains to use for RFC 6541 DKIM Authorized Third-Party Signatures
+# (ATPS) (experimental)
+
+#ATPSDomains            example.com
+
+RemoveOldSignatures     yes
+
+Mode                    sv
+BaseDirectory           /var/tmp
diff --git a/puppet/modules/site_config/manifests/x509/dkim/key.pp b/puppet/modules/site_config/manifests/x509/dkim/key.pp
new file mode 100644
index 00000000..c63a7e94
--- /dev/null
+++ b/puppet/modules/site_config/manifests/x509/dkim/key.pp
@@ -0,0 +1,13 @@
+class site_config::x509::dkim::key {
+
+  ##
+  ## This is for the DKIM key that is used exclusively for DKIM
+  ## signing
+
+  $x509 = hiera('x509')
+  $key  = $x509['dkim_key']
+
+  x509::key { 'dkim':
+    content => $key
+  }
+}
diff --git a/puppet/modules/site_postfix/manifests/mx.pp b/puppet/modules/site_postfix/manifests/mx.pp
index f0a2554a..edaa506f 100644
--- a/puppet/modules/site_postfix/manifests/mx.pp
+++ b/puppet/modules/site_postfix/manifests/mx.pp
@@ -50,7 +50,7 @@ class site_postfix::mx {
     'local_recipient_maps':
       value => '$alias_maps';
     'smtpd_milters':
-      value => 'unix:/run/clamav/milter.ctl';
+      value => 'unix:/run/clamav/milter.ctl,unix:/var/run/opendkim/opendkim.sock';
     'milter_default_action':
       value => 'accept';
   }
-- 
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