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#!/bin/bash
# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2010 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
# This gets zipped and run on the cloudpipe-managed OpenVPN server
export LC_ALL=C
export VPN_IP=`ifconfig | grep 'inet addr:'| grep -v '127.0.0.1' | cut -d: -f2 | awk '{print $$1}'`
export BROADCAST=`ifconfig | grep 'inet addr:'| grep -v '127.0.0.1' | cut -d: -f3 | awk '{print $$1}'`
export DHCP_MASK=`ifconfig | grep 'inet addr:'| grep -v '127.0.0.1' | cut -d: -f4 | awk '{print $$1}'`
export GATEWAY=`netstat -r | grep default | cut -d' ' -f10`
DHCP_LOWER=`echo $$BROADCAST | awk -F. '{print $$1"."$$2"."$$3"." $$4 - ${num_vpn} }'`
DHCP_UPPER=`echo $$BROADCAST | awk -F. '{print $$1"."$$2"."$$3"." $$4 - 1 }'`
# generate a server DH
openssl dhparam -out /etc/openvpn/dh1024.pem 1024
cp crl.pem /etc/openvpn/
cp server.key /etc/openvpn/
cp ca.crt /etc/openvpn/
cp server.crt /etc/openvpn/
# Customize the server.conf.template
cd /etc/openvpn
sed -e s/VPN_IP/$$VPN_IP/g server.conf.template > server.conf
sed -i -e s/DHCP_SUBNET/$$DHCP_MASK/g server.conf
sed -i -e s/DHCP_LOWER/$$DHCP_LOWER/g server.conf
sed -i -e s/DHCP_UPPER/$$DHCP_UPPER/g server.conf
sed -i -e s/max-clients\ 1/max-clients\ 10/g server.conf
echo "push \"route ${dmz_net} ${dmz_mask} $$GATEWAY\"" >> server.conf
echo "duplicate-cn" >> server.conf
echo "crl-verify /etc/openvpn/crl.pem" >> server.conf
/etc/init.d/openvpn start
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