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#!/bin/sh
# OpenVPN -- An application to securely tunnel IP networks
# over a single TCP/UDP port, with support for SSL/TLS-based
# session authentication and key exchange,
# packet encryption, packet authentication, and
# packet compression.
#
# Copyright (C) 2002-2005 OpenVPN Solutions LLC <info@openvpn.net>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2
# as published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program (see the file COPYING included with this
# distribution); if not, write to the Free Software Foundation, Inc.,
# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
# pkitool is a front-end for the openssl tool.
# Calling scripts can set the certificate organizational
# unit with the KEY_OU environmental variable.
PROGNAME=pkitool
VERSION=2.0
DEBUG=0
GREP=grep
OPENSSL=openssl
need_vars()
{
echo ' Please edit the vars script to reflect your configuration,'
echo ' then source it with "source ./vars".'
echo ' Next, to start with a fresh PKI configuration and to delete any'
echo ' previous certificates and keys, run "./clean-all".'
echo " Finally, you can run this tool ($PROGNAME) to build certificates/keys."
}
usage()
{
echo "$PROGNAME $VERSION"
echo "Usage: $PROGNAME [options...] [common-name]"
echo "Options:"
echo " --batch : batch mode (default)"
echo " --interact : interactive mode"
echo " --server : build server cert"
echo " --initca : build root CA"
echo " --inter : build intermediate CA"
echo " --pass : encrypt private key with password"
echo " --csr : only generate a CSR, do not sign"
echo " --sign : sign an existing CSR"
echo " --pkcs12 : generate a combined pkcs12 file"
echo "Notes:"
need_vars
echo "Generated files and corresponding OpenVPN directives:"
echo '(Files will be placed in the $KEY_DIR directory, defined in ./vars)'
echo " ca.crt -> root certificate (--ca)"
echo " ca.key -> root key, keep secure (not directly used by OpenVPN)"
echo " .crt files -> client/server certificates (--cert)"
echo " .key files -> private keys, keep secure (--key)"
echo " .csr files -> certificate signing request (not directly used by OpenVPN)"
echo " dh1024.pem or dh2048.pem -> Diffie Hellman parameters (--dh)"
echo "Examples:"
echo " $PROGNAME --initca -> Build root certificate"
echo " $PROGNAME --initca --pass -> Build root certificate with password-protected key"
echo " $PROGNAME --server server1 -> Build \"server1\" certificate/key"
echo " $PROGNAME client1 -> Build \"client1\" certificate/key"
echo " $PROGNAME --pass client2 -> Build password-protected \"client2\" certificate/key"
echo " $PROGNAME --pkcs12 client3 -> Build \"client3\" certificate/key in PKCS #12 format"
echo " $PROGNAME --csr client4 -> Build \"client4\" CSR to be signed by another CA"
echo " $PROGNAME --sign client4 -> Sign \"client4\" CSR"
echo " $PROGNAME --inter interca -> Build an intermediate key-signing certificate/key"
echo " Also see ./inherit-inter script."
echo "Typical usage for initial PKI setup. Build myserver, client1, and client2 cert/keys."
echo "Protect client2 key with a password. Build DH parms. Generated files in ./keys :"
echo " [edit vars with your site-specific info]"
echo " source ./vars"
echo " ./clean-all"
echo " ./build-dh -> takes a long time, consider backgrounding"
echo " ./$PROGNAME --initca"
echo " ./$PROGNAME --server myserver"
echo " ./$PROGNAME client1"
echo " ./$PROGNAME --pass client2"
echo "Typical usage for adding client cert to existing PKI:"
echo " source ./vars"
echo " ./$PROGNAME client-new"
}
# Set defaults
DO_REQ="1"
REQ_EXT=""
DO_CA="1"
CA_EXT=""
DO_P12="0"
DO_ROOT="0"
NODES_REQ="-nodes"
NODES_P12=""
BATCH="-batch"
CA="ca"
# Process options
while [ $# -gt 0 ]; do
case "$1" in
--server ) REQ_EXT="$REQ_EXT -extensions server"
CA_EXT="$CA_EXT -extensions server" ;;
--batch ) BATCH="-batch" ;;
--interact ) BATCH="" ;;
--inter ) CA_EXT="$CA_EXT -extensions v3_ca" ;;
--initca ) DO_ROOT="1" ;;
--pass ) NODES_REQ="" ;;
--csr ) DO_CA="0" ;;
--sign ) DO_REQ="0" ;;
--pkcs12 ) DO_P12="1" ;;
--* ) echo "$PROGNAME: unknown option: $1"
exit 1 ;;
* ) break ;;
esac
shift
done
# If we are generating pkcs12, only encrypt the final step
if [ $DO_P12 -eq 1 ]; then
NODES_P12="$NODES_REQ"
NODES_REQ="-nodes"
fi
# If undefined, set default key expiration intervals
if [ -z "$KEY_EXPIRE" ]; then
KEY_EXPIRE=3650
fi
if [ -z "$CA_EXPIRE" ]; then
CA_EXPIRE=3650
fi
# Set organizational unit to empty string if undefined
if [ -z "$KEY_OU" ]; then
KEY_OU=""
fi
# Set KEY_CN
if [ $DO_ROOT -eq 1 ]; then
if [ -z "$KEY_CN" ]; then
if [ "$1" ]; then
KEY_CN="$1"
elif [ "$KEY_ORG" ]; then
KEY_CN="$KEY_ORG CA"
fi
fi
if [ $BATCH ] && [ "$KEY_CN" ]; then
echo "Using CA Common Name:" $KEY_CN
fi
elif [ $BATCH ] && [ "$KEY_CN" ] && [ $# -eq 0 ]; then
echo "Using Common Name:" $KEY_CN
else
if [ $# -ne 1 ]; then
usage
exit 1
else
KEY_CN="$1"
fi
fi
export CA_EXPIRE KEY_EXPIRE KEY_OU KEY_CN
# Show parameters (debugging)
if [ $DEBUG -eq 1 ]; then
echo DO_REQ $DO_REQ
echo REQ_EXT $REQ_EXT
echo DO_CA $DO_CA
echo CA_EXT $CA_EXT
echo NODES_REQ $NODES_REQ
echo NODES_P12 $NODES_P12
echo DO_P12 $DO_P12
echo KEY_CN $KEY_CN
echo BATCH $BATCH
echo DO_ROOT $DO_ROOT
echo KEY_EXPIRE $KEY_EXPIRE
echo CA_EXPIRE $CA_EXPIRE
echo KEY_OU $KEY_OU
fi
# Make sure ./vars was sourced beforehand
if [ -d "$KEY_DIR" ] && [ "$KEY_CONFIG" ]; then
cd "$KEY_DIR"
# Make sure $KEY_CONFIG points to the correct version
# of openssl.cnf
if $GREP -i 'easy-rsa version 2\.[0-9]' "$KEY_CONFIG" >/dev/null; then
:
else
echo "$PROGNAME: KEY_CONFIG (set by the ./vars script) is pointing to the wrong"
echo "version of openssl.cnf: $KEY_CONFIG"
echo "The correct version should have a comment that says: easy-rsa version 2.x";
exit 1;
fi
# Build root CA
if [ $DO_ROOT -eq 1 ]; then
$OPENSSL req $BATCH -days $CA_EXPIRE $NODES_REQ -new -x509 \
-keyout "$CA.key" -out "$CA.crt" -config "$KEY_CONFIG" && \
chmod 0600 "$CA.key"
else
# Make sure CA key/cert is available
if [ $DO_CA -eq 1 ] || [ $DO_P12 -eq 1 ]; then
if [ ! -r "$CA.crt" ] || [ ! -r "$CA.key" ]; then
echo "$PROGNAME: Need a readable $CA.crt and $CA.key in $KEY_DIR"
echo "Try $PROGNAME --initca to build a root certificate/key."
exit 1
fi
fi
# Build cert/key
( [ $DO_REQ -eq 0 ] || $OPENSSL req $BATCH -days $KEY_EXPIRE $NODES_REQ -new \
-keyout "$KEY_CN.key" -out "$KEY_CN.csr" $REQ_EXT -config "$KEY_CONFIG" ) && \
( [ $DO_CA -eq 0 ] || $OPENSSL ca $BATCH -days $KEY_EXPIRE -out "$KEY_CN.crt" \
-in "$KEY_CN.csr" $CA_EXT -config "$KEY_CONFIG" ) && \
( [ $DO_P12 -eq 0 ] || $OPENSSL pkcs12 -export -inkey "$KEY_CN.key" \
-in "$KEY_CN.crt" -certfile "$CA.crt" -out "$KEY_CN.p12" $NODES_P12 ) && \
( [ $DO_CA -eq 0 ] || chmod 0600 "$KEY_CN.key" ) && \
( [ $DO_P12 -eq 0 ] || chmod 0600 "$KEY_CN.p12" )
fi
# Need definitions
else
need_vars
fi
|
