Allow redirecting DNS requests to Tor for specific users or globally.

2 files changed, 44 insertions, 0 deletions

diff --git a/manifests/init.pp b/manifests/init.pp
index f69a6f2..5c9b602 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -28,6 +28,12 @@ class shorewall {
   case $tor_transparent_proxy_port {
     '': { $tor_transparent_proxy_port = '9040' }
   }
+  case $tor_dns_host {
+    '': { $tor_dns_host = '127.0.0.1' }
+  }
+  case $tor_dns_port {
+    '': { $tor_dns_port = '8853' }
+  }
   if $tor_user == '' {
     $tor_user = $dist_tor_user ? {
       ''      => 'tor',
diff --git a/manifests/rules/torify/redirect_dns_to_tor.pp b/manifests/rules/torify/redirect_dns_to_tor.pp
new file mode 100644
index 0000000..9c71204
--- /dev/null
+++ b/manifests/rules/torify/redirect_dns_to_tor.pp
@@ -0,0 +1,38 @@
+define shorewall::rules::torify::redirect_dns_to_tor() {
+
+  $user = $name
+
+  $destzone = $shorewall::tor_dns_host ? {
+    '127.0.0.1' => '$FW',
+    default     => 'net'
+  }
+
+  $tcp_rule = "redirect-tcp-dns-to-tor-user=${user}"
+  if !defined(Shorewall::Rule["$tcp_rule"]) {
+    shorewall::rule {
+      "$tcp_rule":
+        source          => '$FW',
+        destination     => "${destzone}:${shorewall::tor_dns_host}:${shorewall::tor_dns_port}",
+        proto           => 'tcp',
+        destinationport => 'domain',
+        user            => $user,
+        order           => 108,
+        action          => 'DNAT';
+    }
+  }
+
+  $udp_rule = "redirect-udp-dns-to-tor-user=${user}"
+  if !defined(Shorewall::Rule["$udp_rule"]) {
+    shorewall::rule {
+      "$udp_rule":
+        source          => '$FW',
+        destination     => "${destzone}:${shorewall::tor_dns_host}:${shorewall::tor_dns_port}",
+        proto           => 'udp',
+        destinationport => 'domain',
+        user            => $user,
+        order           => 108,
+        action          => 'DNAT';
+    }
+  }
+
+}