Run Plinth setup during FreedomBox setup

Start DBus daemon to ensure PackageKit can use it.  Only start if it is
not already running.  Stop after setup.  Stop only if we have started
it.

data/usr/lib/freedombox/setup.d/86_plinth

@@ -16,6 +16,26 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 
+DBUS_STARTED_FOR_PLINTH=false
+
+start_dbus() {
+    local return_code
+
+    service dbus status > /dev/null
+    return_code=$?
+
+    if [ "$return_code" != "0" ]; then
+        service dbus start
+        DBUS_STARTED_FOR_PLINTH=true
+    fi
+}
+
+stop_dbus() {
+    if [ "$DBUS_STARTED_FOR_PLINTH" = "true" ]; then
+        service dbus stop
+    fi
+}
+
 # Enable Apache modules required for Plinth.
 
 echo "Configuring Apache for Plinth..."
@@ -31,3 +51,17 @@ a2ensite plinth.conf
 a2ensite plinth-ssl.conf
 
 echo "Done configuring Apache for Plinth."
+
+echo "Running Plinth setup..."
+
+# Ensure that DBus daemon is running so that Plinth can install
+# various packages via PackgeKit.
+start_dbus
+
+# Run plinth setup to install various necessary program
+plinth --setup
+
+# Stop DBus daemon if we have not started it
+stop_dbus
+
+echo "Done running Plinth setup."