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OpenVPN-Admin
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OpenVPN-Admin/install.sh

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#!/bin/bash
print_help () {
echo -e "./install.sh www_basedir user group"
echo -e "\tbase_dir: The place where the web application will be put in"
echo -e "\tuser: User of the web application"
echo -e "\tgroup: Group of the web application"
}
# Ensure to be root
if [ "$EUID" -ne 0 ]; then
echo "Please run as root"
exit
fi
# Ensure there are enought arguments
if [ "$#" -ne 3 ]; then
print_help
exit
fi
# Ensure there are the prerequisites
for i in openvpn mysql php bower node unzip wget sed; do
which $i > /dev/null
if [ "$?" -ne 0 ]; then
echo "Miss $i"
exit
fi
done
www=$1
user=$2
group=$3
openvpn_admin="$www/openvpn-admin"
# Check the validity of the arguments
if [ ! -d "$www" ] || ! grep -q "$user" "/etc/passwd" || ! grep -q "$group" "/etc/group" ; then
print_help
exit
fi
base_path=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
printf "\n################## Server informations ##################\n"
read -p "Server Hostname/IP: " ip_server
read -p "OpenVPN protocol (tcp or udp) [tcp]: " openvpn_proto
if [[ -z $openvpn_proto ]]; then
openvpn_proto="tcp"
fi
read -p "Port [443]: " server_port
if [[ -z $server_port ]]; then
server_port="443"
fi
# Get root pass (to create the database and the user)
mysql_root_pass=""
status_code=1
while [ $status_code -ne 0 ]; do
read -p "MySQL root password: " -s mysql_root_pass; echo
echo "SHOW DATABASES" | mysql -u root --password="$mysql_root_pass" &> /dev/null
status_code=$?
done
sql_result=$(echo "SHOW DATABASES" | mysql -u root --password="$mysql_root_pass" | grep -e "^openvpn-admin$")
# Check if the database doesn't already exist
if [ "$sql_result" != "" ]; then
echo "The openvpn-admin database already exists."
exit
fi
# Check if the user doesn't already exist
read -p "MySQL user name for OpenVPN-Admin (will be created): " mysql_user
echo "SHOW GRANTS FOR $mysql_user@localhost" | mysql -u root --password="$mysql_root_pass" &> /dev/null
if [ $? -eq 0 ]; then
echo "The MySQL user already exists."
exit
fi
read -p "MySQL user password for OpenVPN-Admin: " -s mysql_pass; echo
# TODO MySQL port & host ?
printf "\n################## Certificates informations ##################\n"
read -p "Key size (1024, 2048 or 4096) [2048]: " key_size
read -p "Root certificate expiration (in days) [3650]: " ca_expire
read -p "Certificate expiration (in days) [3650]: " cert_expire
read -p "Country Name (2 letter code) [US]: " cert_country
read -p "State or Province Name (full name) [California]: " cert_province
read -p "Locality Name (eg, city) [San Francisco]: " cert_city
read -p "Organization Name (eg, company) [Copyleft Certificate Co]: " cert_org
read -p "Organizational Unit Name (eg, section) [My Organizational Unit]: " cert_ou
read -p "Email Address [[email protected]]: " cert_email
read -p "Common Name (eg, your name or your server's hostname) [ChangeMe]: " key_cn
printf "\n################## Creating the certificates ##################\n"
EASYRSA_RELEASES=( $(
curl -s https://api.github.com/repos/OpenVPN/easy-rsa/releases | \
grep 'tag_name' | \
grep -E '3(\.[0-9]+)+' | \
awk '{ print $2 }' | \
sed 's/[,|"|v]//g'
) )
EASYRSA_LATEST=${EASYRSA_RELEASES[0]}
# Get the rsa keys
wget -q https://github.com/OpenVPN/easy-rsa/releases/download/v${EASYRSA_LATEST}/EasyRSA-nix-${EASYRSA_LATEST}.tgz
tar -xaf EasyRSA-nix-${EASYRSA_LATEST}.tgz
mv EasyRSA-${EASYRSA_LATEST} /etc/openvpn/easy-rsa
rm -r EasyRSA-nix-${EASYRSA_LATEST}.tgz
cd /etc/openvpn/easy-rsa
if [[ ! -z $key_size ]]; then
export EASYRSA_KEY_SIZE=$key_size
fi
if [[ ! -z $ca_expire ]]; then
export EASYRSA_CA_EXPIRE=$ca_expire
fi
if [[ ! -z $cert_expire ]]; then
export EASYRSA_CERT_EXPIRE=$cert_expire
fi
if [[ ! -z $cert_country ]]; then
export EASYRSA_REQ_COUNTRY=$cert_country
fi
if [[ ! -z $cert_province ]]; then
export EASYRSA_REQ_PROVINCE=$cert_province
fi
if [[ ! -z $cert_city ]]; then
export EASYRSA_REQ_CITY=$cert_city
fi
if [[ ! -z $cert_org ]]; then
export EASYRSA_REQ_ORG=$cert_org
fi
if [[ ! -z $cert_ou ]]; then
export EASYRSA_REQ_OU=$cert_ou
fi
if [[ ! -z $cert_email ]]; then
export EASYRSA_REQ_EMAIL=$cert_email
fi
if [[ ! -z $key_cn ]]; then
export EASYRSA_REQ_CN=$key_cn
fi
# Init PKI dirs and build CA certs
./easyrsa init-pki
./easyrsa build-ca nopass
# Generate Diffie-Hellman parameters
./easyrsa gen-dh
# Genrate server keypair
./easyrsa build-server-full server nopass
# Generate shared-secret for TLS Authentication
openvpn --genkey --secret pki/ta.key
printf "\n################## Setup OpenVPN ##################\n"
# Copy certificates and the server configuration in the openvpn directory
cp /etc/openvpn/easy-rsa/pki/{ca.crt,ta.key,issued/server.crt,private/server.key,dh.pem} "/etc/openvpn/"
cp "$base_path/installation/server.conf" "/etc/openvpn/"
mkdir "/etc/openvpn/ccd"
sed -i "s/port 443/port $server_port/" "/etc/openvpn/server.conf"
if [ $openvpn_proto = "udp" ]; then
sed -i "s/proto tcp/proto $openvpn_proto/" "/etc/openvpn/server.conf"
fi
nobody_group=$(id -ng nobody)
sed -i "s/group nogroup/group $nobody_group/" "/etc/openvpn/server.conf"
printf "\n################## Setup firewall ##################\n"
# Make ip forwading and make it persistent
echo 1 > "/proc/sys/net/ipv4/ip_forward"
echo "net.ipv4.ip_forward = 1" >> "/etc/sysctl.conf"
# Get primary NIC device name
primary_nic=`route | grep '^default' | grep -o '[^ ]*$'`
# Iptable rules
iptables -I FORWARD -i tun0 -j ACCEPT
iptables -I FORWARD -o tun0 -j ACCEPT
iptables -I OUTPUT -o tun0 -j ACCEPT
iptables -A FORWARD -i tun0 -o $primary_nic -j ACCEPT
iptables -t nat -A POSTROUTING -o $primary_nic -j MASQUERADE
iptables -t nat -A POSTROUTING -s 10.8.0.0/24 -o $primary_nic -j MASQUERADE
iptables -t nat -A POSTROUTING -s 10.8.0.2/24 -o $primary_nic -j MASQUERADE
printf "\n################## Setup MySQL database ##################\n"
echo "CREATE DATABASE \`openvpn-admin\`" | mysql -u root --password="$mysql_root_pass"
echo "CREATE USER $mysql_user@localhost IDENTIFIED BY '$mysql_pass'" | mysql -u root --password="$mysql_root_pass"
echo "GRANT ALL PRIVILEGES ON \`openvpn-admin\`.* TO $mysql_user@localhost" | mysql -u root --password="$mysql_root_pass"
echo "FLUSH PRIVILEGES" | mysql -u root --password="$mysql_root_pass"
printf "\n################## Setup web application ##################\n"
# Copy bash scripts (which will insert row in MySQL)
cp -r "$base_path/installation/scripts" "/etc/openvpn/"
chmod +x "/etc/openvpn/scripts/"*
# Configure MySQL in openvpn scripts
sed -i "s/USER=''/USER='$mysql_user'/" "/etc/openvpn/scripts/config.sh"
sed -i "s/PASS=''/PASS='$mysql_pass'/" "/etc/openvpn/scripts/config.sh"
# Create the directory of the web application
mkdir "$openvpn_admin"
cp -r "$base_path/"{index.php,sql,bower.json,.bowerrc,js,include,css,installation/client-conf} "$openvpn_admin"
# New workspace
cd "$openvpn_admin"
# Replace config.php variables
sed -i "s/\$user = '';/\$user = '$mysql_user';/" "./include/config.php"
sed -i "s/\$pass = '';/\$pass = '$mysql_pass';/" "./include/config.php"
# Replace in the client configurations with the ip of the server and openvpn protocol
for file in "./client-conf/gnu-linux/client.conf" "./client-conf/osx-viscosity/client.conf" "./client-conf/windows/client.ovpn"; do
sed -i "s/remote xxx\.xxx\.xxx\.xxx 443/remote $ip_server $server_port/" $file
if [ $openvpn_proto = "udp" ]; then
sed -i "s/proto tcp-client/proto udp/" $file
fi
done
# Copy ta.key inside the client-conf directory
for directory in "./client-conf/gnu-linux/" "./client-conf/osx-viscosity/" "./client-conf/windows/"; do
cp "/etc/openvpn/"{ca.crt,ta.key} $directory
done
# Install third parties
bower --allow-root install
chown -R "$user:$group" "$openvpn_admin"
printf "\033[1m\n#################################### Finish ####################################\n"
echo -e "# Congratulations, you have successfully setup OpenVPN-Admin! #\r"
echo -e "Please, finish the installation by configuring your web server (Apache, NGinx...)"
echo -e "and install the web application by visiting http://your-installation/index.php?installation\r"
echo -e "Then, you will be able to run OpenVPN with systemctl start openvpn@server\r"
echo "Please, report any issues here https://github.com/Chocobozzz/OpenVPN-Admin"
printf "\n################################################################################ \033[0m\n"