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Nyr 2020-05-21 19:19:31 +02:00
parent 6f155b997d
commit f737b02a9a
1 changed files with 22 additions and 22 deletions
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42
openvpn-install.sh
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@ -6,7 +6,7 @@
# Discard stdin. Needed when running from an one-liner which includes a newline # Discard stdin. Needed when running from an one-liner which includes a newline
read -N 999999999 -t 0.001 read -N 999999 -t 0.001
# Detect Debian users running the script with "sh" instead of bash # Detect Debian users running the script with "sh" instead of bash
if readlink /proc/$$/exe | grep -q "dash"; then if readlink /proc/$$/exe | grep -q "dash"; then
@ -14,11 +14,6 @@ if readlink /proc/$$/exe | grep -q "dash"; then
exit exit
fi fi
if [[ "$EUID" -ne 0 ]]; then
echo "This installer needs to be run with superuser privileges."
exit
fi
# Detect OpenVZ 6 # Detect OpenVZ 6
if [[ $(uname -r | cut -d "." -f 1) -eq 2 ]]; then if [[ $(uname -r | cut -d "." -f 1) -eq 2 ]]; then
echo "The system is running an old kernel, which is incompatible with this installer." echo "The system is running an old kernel, which is incompatible with this installer."
@ -67,15 +62,20 @@ This version of CentOS is too old and unsupported."
exit exit
fi fi
if [[ ! -e /dev/net/tun ]] || ! ( exec 7<>/dev/net/tun ) 2>/dev/null; then # Detect environments where $PATH does not include the sbin directories
echo "The system does not have the TUN device available. if ! grep -q sbin <<< "$PATH"; then
TUN needs to be enabled before running this installer." echo '$PATH does not include sbin. Try using "su -" instead of "su".'
exit exit
fi fi
# Detect environments where $PATH does not include the sbin directories if [[ "$EUID" -ne 0 ]]; then
if ! grep -q sbin <<< $PATH; then echo "This installer needs to be run with superuser privileges."
echo '$PATH does not include sbin. Try using "su -" instead of "su".' exit
fi
if [[ ! -e /dev/net/tun ]] || ! ( exec 7<>/dev/net/tun ) 2>/dev/null; then
echo "The system does not have the TUN device available.
TUN needs to be enabled before running this installer."
exit exit
fi fi
@ -125,7 +125,7 @@ if [[ ! -e /etc/openvpn/server/server.conf ]]; then
get_public_ip=$(grep -m 1 -oE '^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$' <<< "$(wget -T 10 -t 1 -4qO- "http://ip1.dynupdate.no-ip.com/" || curl -m 10 -4Ls "http://ip1.dynupdate.no-ip.com/")") get_public_ip=$(grep -m 1 -oE '^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$' <<< "$(wget -T 10 -t 1 -4qO- "http://ip1.dynupdate.no-ip.com/" || curl -m 10 -4Ls "http://ip1.dynupdate.no-ip.com/")")
read -p "Public IPv4 address / hostname [$get_public_ip]: " public_ip read -p "Public IPv4 address / hostname [$get_public_ip]: " public_ip
# If the checkip service is unavailable and user didn't provide input, ask again # If the checkip service is unavailable and user didn't provide input, ask again
until [[ -n "$get_public_ip" || -n $public_ip ]]; do until [[ -n "$get_public_ip" || -n "$public_ip" ]]; do
echo "Invalid input." echo "Invalid input."
read -p "Public IPv4 address / hostname: " public_ip read -p "Public IPv4 address / hostname: " public_ip
done done
@ -194,7 +194,7 @@ if [[ ! -e /etc/openvpn/server/server.conf ]]; then
client=$(sed 's/[^0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_-]/_/g' <<< "$unsanitized_client") client=$(sed 's/[^0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_-]/_/g' <<< "$unsanitized_client")
[[ -z "$client" ]] && client="client" [[ -z "$client" ]] && client="client"
echo echo
echo "OpenVPN installation is ready to begin now." echo "OpenVPN installation is ready to begin."
# Install a firewall in the rare case where one is not already available # Install a firewall in the rare case where one is not already available
if ! systemctl is-active --quiet firewalld.service && ! hash iptables 2>/dev/null; then if ! systemctl is-active --quiet firewalld.service && ! hash iptables 2>/dev/null; then
if [[ "$os" == "centos" || "$os" == "fedora" ]]; then if [[ "$os" == "centos" || "$os" == "fedora" ]]; then
@ -216,13 +216,13 @@ LimitNPROC=infinity" > /etc/systemd/system/openvpn-server@server.service.d/disab
fi fi
if [[ "$os" = "debian" || "$os" = "ubuntu" ]]; then if [[ "$os" = "debian" || "$os" = "ubuntu" ]]; then
apt-get update apt-get update
apt-get install -y openvpn openssl ca-certificates $firewall apt-get install -y openvpn openssl ca-certificates "$firewall"
elif [[ "$os" = "centos" ]]; then elif [[ "$os" = "centos" ]]; then
yum install -y epel-release yum install -y epel-release
yum install -y openvpn openssl ca-certificates tar $firewall yum install -y openvpn openssl ca-certificates tar "$firewall"
else else
# Else, OS must be Fedora # Else, OS must be Fedora
dnf install -y openvpn openssl ca-certificates tar $firewall dnf install -y openvpn openssl ca-certificates tar "$firewall"
fi fi
# If firewalld was just installed, enable it # If firewalld was just installed, enable it
if [[ "$firewall" == "firewalld" ]]; then if [[ "$firewall" == "firewalld" ]]; then
@ -358,7 +358,7 @@ crl-verify crl.pem" >> /etc/openvpn/server/server.conf
ip6tables_path=$(command -v ip6tables) ip6tables_path=$(command -v ip6tables)
# nf_tables is not available as standard in OVZ kernels. So use iptables-legacy # nf_tables is not available as standard in OVZ kernels. So use iptables-legacy
# if we are in OVZ, with a nf_tables backend and iptables-legacy is available. # if we are in OVZ, with a nf_tables backend and iptables-legacy is available.
if [[ $(systemd-detect-virt) == "openvz" ]] && readlink -f $(command -v iptables) | grep -q "nft" && hash iptables-legacy 2>/dev/null; then if [[ $(systemd-detect-virt) == "openvz" ]] && readlink -f "$(command -v iptables)" | grep -q "nft" && hash iptables-legacy 2>/dev/null; then
iptables_path=$(command -v iptables-legacy) iptables_path=$(command -v iptables-legacy)
ip6tables_path=$(command -v ip6tables-legacy) ip6tables_path=$(command -v ip6tables-legacy)
fi fi
@ -402,7 +402,7 @@ WantedBy=multi-user.target" >> /etc/systemd/system/openvpn-iptables.service
semanage port -a -t openvpn_port_t -p "$protocol" "$port" semanage port -a -t openvpn_port_t -p "$protocol" "$port"
fi fi
# If the server is behind NAT, use the correct IP address # If the server is behind NAT, use the correct IP address
[[ ! -z "$public_ip" ]] && ip="$public_ip" [[ -n "$public_ip" ]] && ip="$public_ip"
# client-common.txt is created so we have a template to add further users later # client-common.txt is created so we have a template to add further users later
echo "client echo "client
dev tun dev tun
@ -432,8 +432,8 @@ else
echo "OpenVPN is already installed." echo "OpenVPN is already installed."
echo echo
echo "Select an option:" echo "Select an option:"
echo " 1) Add a new user" echo " 1) Add a new client"
echo " 2) Revoke an existing user" echo " 2) Revoke an existing client"
echo " 3) Remove OpenVPN" echo " 3) Remove OpenVPN"
echo " 4) Exit" echo " 4) Exit"
read -p "Option: " option read -p "Option: " option