File genkey.sh of Package netqmail

#!/bin/sh

# (C) 2011 Peter Conrad <conrad@quisquis.de>
#
# This file is licensed under the terms of the
# GNU General Public License Version 2. A copy of these terms should be
# enclosed as "gpl-2.0.txt" in the package containing this file.

if [ "$1" = "-h" ]; then
    echo "Usage: $0 [-f | -r | -h] <subject>"
    echo " -r	 re-use existing key"
    echo " -f	 overwrite existing key"
    echo " -h	 show this help"
    echo "<subject> Certificate subject in the form"
    echo "	 /C=country/ST=state/L=location/O=organization/CN=common-name"
    echo "Creates SSL key, certificate request + self-signed certificate for the"
    echo "given subject as ssl.key, ssl.crq and ssl.crt."
    exit 0
fi

keyargs="-new -keyout ssl.key -newkey rsa:1024"
if [ -r ssl.key ]; then
    if [ "$1" = "-r" ]; then
	keyargs="-key ssl.key"
	shift
    elif [ "$1" != "-f" ]; then
	echo "Key exists. Will not overwrite. Use -f to force me."
	exit 1
    fi
else
    if [ "$1" = "-r" ]; then
	echo "No key found. Aborting."
	exit 1
    fi
    shift
fi

openssl req -new -out ssl.crq $keyargs -nodes -batch -subj "$1"
openssl req -x509 -in ssl.crq -out ssl.crt -key ssl.key -nodes -days 365