Update to be compatible with Ubuntu 12 and newer

setup/dns.sh

@@ -27,11 +27,9 @@ fi
 # * ldnsutils: Helper utilities for signing DNSSEC zones.
 # * openssh-client: Provides ssh-keyscan which we use to create SSHFP records.
 
-apt_install nsd ldnsutils openssh-client
+apt_install $NSD_PACKAGE ldnsutils openssh-client
 
-# Prepare nsd's configuration.
-
-mkdir -p /var/run/nsd
+mkdir -p /var/run/$NSD_PACKAGE
 
 # Create DNSSEC signing keys.
 

setup/preflight.sh

@@ -8,8 +8,8 @@ if [[ $EUID -ne 0 ]]; then
 fi
 
 # Check that we are running on Ubuntu 14.04 LTS (or 14.04.xx).
-if [ "`lsb_release -d | sed 's/.*:\s*//' | sed 's/14\.04\.[0-9]/14.04/' `" != "Ubuntu 14.04 LTS" ]; then
-	echo "Mail-in-a-Box only supports being installed on Ubuntu 14.04, sorry. You are running:"
+if [ `lsb_release -d | sed 's/.*:\sUbuntu *//' | cut -d'.' -f1` -lt 12 ]; then
+	echo "Mail-in-a-Box only supports being installed on Ubuntu 12 and newer, sorry. You are running:"
 	echo
 	lsb_release -d | sed 's/.*:\s*//'
 	echo

setup/start.sh

@@ -8,6 +8,13 @@ source setup/functions.sh # load our functions
 # machine with enough memory? If not, this shows an error and exits.
 source setup/preflight.sh
 
+# if Ubuntu major version is less than 14 use nsd3 package
+if [ `lsb_release -d | sed 's/.*:\sUbuntu *//' | cut -d'.' -f1` -lt 14 ]; then
+    NSD_PACKAGE="nsd3"
+else
+    NSD_PACKAGE="nsd"
+fi
+
 # Ensure Python reads/writes files in UTF-8. If the machine
 # triggers some other locale in Python, like ASCII encoding,
 # Python may not be able to read/write files. Here and in
@@ -109,6 +116,7 @@ PUBLIC_IPV6=$PUBLIC_IPV6
 PRIVATE_IP=$PRIVATE_IP
 PRIVATE_IPV6=$PRIVATE_IPV6
 CSR_COUNTRY=$CSR_COUNTRY
+NSD_PACKAGE=$NSD_PACKAGE
 EOF
 
 # Start service configuration.