#!/bin/bash

# Create the default keys for the OpenDKIM Milter.
#
# The creation is controlled by the $AUTOCREATE_DKIM_KEYS environment
# variable.

# source function library
#. /etc/rc.d/init.d/functions

# Some functions to make the below more readable
prog=opendkim
KEYGEN=@sbindir@/$prog-genkey
DKIM_SELECTOR=default
DKIM_KEYDIR=@sysconfdir@/$prog/keys

# Pull in sysconfig settings (will override previously set functions)
[ -f @sysconfdir@/sysconfig/$prog ] && . @sysconfdir@/sysconfig/$prog

do_dkim_keygen() {
        if [ ! -s $DKIM_KEYDIR/$DKIM_SELECTOR.private ]; then
                echo -n $"Generating default DKIM keys: "
                if [ "x`hostname --domain`" = "x" ]; then
#                       echo_warning
                        echo
                        echo $"Cannot determine host's domain name, so skipping default key generation."
                else
                        mkdir -p $DKIM_KEYDIR
                        $KEYGEN -D $DKIM_KEYDIR -s $DKIM_SELECTOR -d `hostname --domain`
                        chown root:$prog $DKIM_KEYDIR
                        chown $prog:$prog $DKIM_KEYDIR/$DKIM_SELECTOR.{private,txt}
                        chmod 600 $DKIM_KEYDIR/$DKIM_SELECTOR.private
                        chmod 644 $DKIM_KEYDIR/$DKIM_SELECTOR.txt
#                       echo_success
                        echo
                        echo Default DKIM keys for `hostname --domain` created in $DKIM_KEYDIR.
                fi
        fi
}

# Create keys if necessary
if [ "x${AUTOCREATE_DKIM_KEYS}" != xNO ]; then
	do_dkim_keygen
fi