#!/bin/bash
#25/01/2021
clear
clear
msg -bar
SCPdir="/etc/VPS-AGN" && [[ ! -d ${SCPdir} ]] && exit 1
SCPfrm="${SCPdir}/tools" && [[ ! -d ${SCPfrm} ]] && exit
SCPinst="${SCPdir}/protocols" && [[ ! -d ${SCPinst} ]] && exit
SCPidioma="${SCPdir}/idioma" && [[ ! -e ${SCPidioma} ]] && touch ${SCPidioma}
#timedatectl set-timezone UTC
# Detect Debian users running the script with "sh" instead of bash
if readlink /proc/$$/exe | grep -q "dash"; then
	echo "This script is used with bash"
	exit
fi

if [[ "$EUID" -ne 0 ]]; then
	echo "Sorry, it only works as root"
	exit
fi

if [[ ! -e /dev/net/tun ]]; then
	echo "The TUN device is not available
You need to enable TUN before using this script"
	exit
fi

if [[ -e /etc/debian_version ]]; then
	OS=debian
	GROUPNAME=nogroup
	RCLOCAL='/etc/rc.local'
elif [[ -e /etc/centos-release || -e /etc/redhat-release ]]; then
	OS=centos
	GROUPNAME=nobody
	RCLOCAL='/etc/rc.d/rc.local'
else
	echo "Your operating system is not available for this script"
	exit
fi

agrega_dns () {
msg -ama " Type the DNS HOST you want to Add"
read -p " [NewDNS]: " SDNS
cat /etc/hosts|grep -v "$SDNS" > /etc/hosts.bak && mv -f /etc/hosts.bak /etc/hosts
if [[ -e /etc/opendns ]]; then
cat /etc/opendns > /tmp/opnbak
mv -f /tmp/opnbak /etc/opendns
echo "$SDNS" >> /etc/opendns 
else
echo "$SDNS" > /etc/opendns
fi
[[ -z $NEWDNS ]] && NEWDNS="$SDNS" || NEWDNS="$NEWDNS $SDNS"
unset SDNS
}
mportas () {
unset portas
portas_var=$(lsof -V -i -P -n | grep -v "ESTABLISHED" |grep -v "COMMAND")
while read port; do
var1=$(echo $port | awk '{print $1}') && var2=$(echo $port | awk '{print $9}' | awk -F ":" '{print $2}')
[[ "$(echo -e $portas|grep "$var1 $var2")" ]] || portas+="$var1 $var2\n"
done <<< "$portas_var"
i=1
echo -e "$portas"
}
dns_fun () {
case $1 in
3)dns[$2]='push "dhcp-option DNS 1.0.0.1"';;
4)dns[$2]='push "dhcp-option DNS 1.1.1.1"';;
5)dns[$2]='push "dhcp-option DNS 9.9.9.9"';;
6)dns[$2]='push "dhcp-option DNS 1.1.1.1"';;
7)dns[$2]='push "dhcp-option DNS 80.67.169.40"';;
8)dns[$2]='push "dhcp-option DNS 80.67.169.12"';;
9)dns[$2]='push "dhcp-option DNS 84.200.69.80"';;
10)dns[$2]='push "dhcp-option DNS 84.200.70.40"';;
11)dns[$2]='push "dhcp-option DNS 208.67.222.222"';;
12)dns[$2]='push "dhcp-option DNS 208.67.220.220"';;
13)dns[$2]='push "dhcp-option DNS 8.8.8.8"';;
14)dns[$2]='push "dhcp-option DNS 8.8.4.4"';;
15)dns[$2]='push "dhcp-option DNS 77.88.8.8"';;
16)dns[$2]='push "dhcp-option DNS 77.88.8.1"';;
17)dns[$2]='push "dhcp-option DNS 176.103.130.130"';;
18)dns[$2]='push "dhcp-option DNS 176.103.130.131"';;
esac
}
meu_ip () {
if [[ -e /etc/VPS-AGN/MEUIPvps ]]; then
echo "$(cat /etc/VPS-AGN/MEUIPvps)"
else
MEU_IP=$(ip addr | grep 'inet' | grep -v inet6 | grep -vE '127\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}' | grep -o -E '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}' | head -1)
MEU_IP2=$(wget -qO- ipv4.icanhazip.com)
[[ "$MEU_IP" != "$MEU_IP2" ]] && echo "$MEU_IP2" || echo "$MEU_IP"
echo "$MEU_IP" > /etc/VPS-AGN/MEUIPvps
fi
}
IP="$(meu_ip)"

instala_ovpn2 () {
msg -bar3
clear
msg -bar
msg -tit
echo -e "\033[1;32m     OPENVPN INSTALLER | VPS-AGN By @KhaledAGN"
msg -bar
	# OpenVPN setup and first user creation
echo -e "\033[1;97mCertain parameters are needed to configure OpenVPN."
echo "Default configuration just press ENTER."
echo "First, what is the IPv4 you want for OpenVPN"
echo "Detecting..."
msg -bar
	# Autodetect IP address and pre-fill for the user
	IP=$(ip addr | grep 'inet' | grep -v inet6 | grep -vE '127\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}' | grep -oE '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}' | head -1)
	read -p "IP address: " -e -i $IP IP
	# If $IP is a private IP address, the server must be behind NAT
	if echo "$IP" | grep -qE '^(10\.|172\.1[6789]\.|172\.2[0-9]\.|172\.3[01]\.|192\.168)'; then
		echo
		echo "This server is behind a NAT network?"
		read -p "Public IP / hostname: " -e PUBLICIP
	fi
msg -bar
msg -ama "What protocol do you need for OpenVPN connections?"
msg -bar
	echo "   1) UDP (recommended)"
	echo "   2) TCP"
msg -bar
	read -p "Protocolo [1-2]: " -e -i 1 PROTOCOL
	case $PROTOCOL in
		1) 
		PROTOCOL=udp
		;;
		2) 
		PROTOCOL=tcp
		;;
	esac
msg -bar
msg -ama "What port do you need in OpenVPN (Default 1194)?"
msg -bar
	read -p "PORT: " -e -i 1194 PORT
msg -bar
msg -ama "Which DNS will you use in your VPN?"
msg -bar
	echo "   1) Current on the VPS"
	echo "   2) 1.1.1.1"
	echo "   3) Google"
	echo "   4) OpenDNS"
	echo "   5) Verisign"
msg -bar
	read -p "DNS [1-5]: " -e -i 1 DNS
#CIPHER
msg -bar
msg -ama " Choose which encoding you want for the data channel:"
msg -bar
echo "   1) AES-128-CBC"
echo "   2) AES-192-CBC"
echo "   3) AES-256-CBC"
echo "   4) CAMELLIA-128-CBC"
echo "   5) CAMELLIA-192-CBC"
echo "   6) CAMELLIA-256-CBC"
echo "   7) SEED-CBC"
echo "   8) NONE"
msg -bar
while [[ $CIPHER != @([1-8]) ]]; do
read -p " Cipher [1-7]: " -e -i 1 CIPHER
done
case $CIPHER in
1) CIPHER="cipher AES-128-CBC";;
2) CIPHER="cipher AES-192-CBC";;
3) CIPHER="cipher AES-256-CBC";;
4) CIPHER="cipher CAMELLIA-128-CBC";;
5) CIPHER="cipher CAMELLIA-192-CBC";;
6) CIPHER="cipher CAMELLIA-256-CBC";;
7) CIPHER="cipher SEED-CBC";;
8) CIPHER="cipher none";;
esac
msg -bar
msg -ama " We are ready to set up your OpenVPN server"
msg -bar
	read -n1 -r -p "Press any key to continue..."
	if [[ "$OS" = 'debian' ]]; then
		apt-get update
		apt-get install openvpn iptables openssl ca-certificates -y
	else
		# 
		yum install epel-release -y
		yum install openvpn iptables openssl ca-certificates -y
	fi
	# Get easy-rsa
	EASYRSAURL='https://github.com/OpenVPN/easy-rsa/releases/download/v3.0.8/EasyRSA-3.0.8.tgz'
	wget -O ~/easyrsa.tgz "$EASYRSAURL" 2>/dev/null || curl -Lo ~/easyrsa.tgz "$EASYRSAURL"
	tar xzf ~/easyrsa.tgz -C ~/
	mv ~/EasyRSA-3.0.8/ /etc/openvpn/
	mv /etc/openvpn/EasyRSA-3.0.8/ /etc/openvpn/easy-rsa/
	chown -R root:root /etc/openvpn/easy-rsa/
	rm -f ~/easyrsa.tgz
	cd /etc/openvpn/easy-rsa/
	# 
	./easyrsa init-pki
	./easyrsa --batch build-ca nopass
	./easyrsa gen-dh
	./easyrsa build-server-full server nopass
	EASYRSA_CRL_DAYS=3650 ./easyrsa gen-crl
	# 
	cp pki/ca.crt pki/private/ca.key pki/dh.pem pki/issued/server.crt pki/private/server.key pki/crl.pem /etc/openvpn
	# 
	chown nobody:$GROUPNAME /etc/openvpn/crl.pem
	# 
	openvpn --genkey --secret /etc/openvpn/ta.key
	# 
	echo "port $PORT
proto $PROTOCOL
dev tun
sndbuf 0
rcvbuf 0
ca ca.crt
cert server.crt
key server.key
dh dh.pem
auth SHA512
tls-auth ta.key 0
topology subnet
server 10.8.0.0 255.255.255.0
ifconfig-pool-persist ipp.txt" > /etc/openvpn/server.conf
	echo 'push "redirect-gateway def1 bypass-dhcp"' >> /etc/openvpn/server.conf
	# DNS
	case $DNS in
		1)
		# 
		# 
		if grep -q "127.0.0.53" "/etc/resolv.conf"; then
			RESOLVCONF='/run/systemd/resolve/resolv.conf'
		else
			RESOLVCONF='/etc/resolv.conf'
		fi
		# 
		grep -v '#' $RESOLVCONF | grep 'nameserver' | grep -E -o '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}' | while read line; do
			echo "push \"dhcp-option DNS $line\"" >> /etc/openvpn/server.conf
		done
		;;
		2)
		echo 'push "dhcp-option DNS 1.1.1.1"' >> /etc/openvpn/server.conf
		echo 'push "dhcp-option DNS 1.0.0.1"' >> /etc/openvpn/server.conf
		;;
		3)
		echo 'push "dhcp-option DNS 8.8.8.8"' >> /etc/openvpn/server.conf
		echo 'push "dhcp-option DNS 8.8.4.4"' >> /etc/openvpn/server.conf
		;;
		4)
		echo 'push "dhcp-option DNS 208.67.222.222"' >> /etc/openvpn/server.conf
		echo 'push "dhcp-option DNS 208.67.220.220"' >> /etc/openvpn/server.conf
		;;
		5)
		echo 'push "dhcp-option DNS 64.6.64.6"' >> /etc/openvpn/server.conf
		echo 'push "dhcp-option DNS 64.6.65.6"' >> /etc/openvpn/server.conf
		;;
	esac
	

	
	echo "keepalive 10 120
${CIPHER}
user nobody
group $GROUPNAME
persist-key
persist-tun
status openvpn-status.log
verb 3
crl-verify crl.pem" >> /etc/openvpn/server.conf
updatedb
PLUGIN=$(locate openvpn-plugin-auth-pam.so | head -1)
[[ ! -z $(echo ${PLUGIN}) ]] && {
echo "client-to-client
client-cert-not-required
username-as-common-name
plugin $PLUGIN login" >> /etc/openvpn/server.conf
}
	# 
	echo 'net.ipv4.ip_forward=1' > /etc/sysctl.d/30-openvpn-forward.conf
	# 
	echo 1 > /proc/sys/net/ipv4/ip_forward
	if pgrep firewalld; then
		# 
		#
		# 
		# 
		firewall-cmd --zone=public --add-port=$PORT/$PROTOCOL
		firewall-cmd --zone=trusted --add-source=10.8.0.0/24
		firewall-cmd --permanent --zone=public --add-port=$PORT/$PROTOCOL
		firewall-cmd --permanent --zone=trusted --add-source=10.8.0.0/24
		# 
		firewall-cmd --direct --add-rule ipv4 nat POSTROUTING 0 -s 10.8.0.0/24 ! -d 10.8.0.0/24 -j SNAT --to $IP
		firewall-cmd --permanent --direct --add-rule ipv4 nat POSTROUTING 0 -s 10.8.0.0/24 ! -d 10.8.0.0/24 -j SNAT --to $IP
	else
		# 
		if [[ "$OS" = 'debian' && ! -e $RCLOCAL ]]; then
			echo '#!/bin/sh -e
exit 0' > $RCLOCAL
		fi
		chmod +x $RCLOCAL
		# 
		iptables -t nat -A POSTROUTING -s 10.8.0.0/24 ! -d 10.8.0.0/24 -j SNAT --to $IP
		sed -i "1 a\iptables -t nat -A POSTROUTING -s 10.8.0.0/24 ! -d 10.8.0.0/24 -j SNAT --to $IP" $RCLOCAL
		if iptables -L -n | grep -qE '^(REJECT|DROP)'; then
			#
			# 
			# 
			iptables -I INPUT -p $PROTOCOL --dport $PORT -j ACCEPT
			iptables -I FORWARD -s 10.8.0.0/24 -j ACCEPT
			iptables -I FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
			sed -i "1 a\iptables -I INPUT -p $PROTOCOL --dport $PORT -j ACCEPT" $RCLOCAL
			sed -i "1 a\iptables -I FORWARD -s 10.8.0.0/24 -j ACCEPT" $RCLOCAL
			sed -i "1 a\iptables -I FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT" $RCLOCAL
		fi
	fi
	# 
	if sestatus 2>/dev/null | grep "Current mode" | grep -q "enforcing" && [[ "$PORT" != '1194' ]]; then
		# 
		if ! hash semanage 2>/dev/null; then
			yum install policycoreutils-python -y
		fi
		semanage port -a -t openvpn_port_t -p $PROTOCOL $PORT
	fi
	# 
	if [[ "$OS" = 'debian' ]]; then
		# 
		if pgrep systemd-journal; then
			systemctl restart openvpn@server.service
		else
			/etc/init.d/openvpn restart
		fi
	else
		if pgrep systemd-journal; then
			systemctl restart openvpn@server.service
			systemctl enable openvpn@server.service
		else
			service openvpn restart
			chkconfig openvpn on
		fi
	fi
	# 
	if [[ "$PUBLICIP" != "" ]]; then
		IP=$PUBLICIP
	fi
	# 
	echo "# OVPN_ACCESS_SERVER_PROFILE=VPS-AGN
client
dev tun
proto $PROTOCOL
sndbuf 0
rcvbuf 0
remote $IP $PORT
resolv-retry infinite
nobind
persist-key
persist-tun
remote-cert-tls server
auth SHA512
${CIPHER}
setenv opt block-outside-dns
key-direction 1
verb 3
auth-user-pass" > /etc/openvpn/client-common.txt
msg -bar
msg -ama " Now create an SSH to generate the (.ovpn)!"
msg -bar
echo -e "\033[1;32m Configuration Finished!"
msg -bar

}

instala_ovpn () {
parametros_iniciais () {
#Verifica o Sistema
[[ "$EUID" -ne 0 ]] && echo " Sorry, you need to run this as ROOT" && exit 1
[[ ! -e /dev/net/tun ]] && echo " TUN is not Available" && exit 1
if [[ -e /etc/debian_version ]]; then
OS="debian"
VERSION_ID=$(cat /etc/os-release | grep "VERSION_ID")
IPTABLES='/etc/iptables/iptables.rules'
[[ ! -d /etc/iptables ]] && mkdir /etc/iptables
[[ ! -e $IPTABLES ]] && touch $IPTABLES
SYSCTL='/etc/sysctl.conf'
 [[ "$VERSION_ID" != 'VERSION_ID="7"' ]] && [[ "$VERSION_ID" != 'VERSION_ID="8"' ]] && [[ "$VERSION_ID" != 'VERSION_ID="9"' ]] && [[ "$VERSION_ID" != 'VERSION_ID="14.04"' ]] && [[ "$VERSION_ID" != 'VERSION_ID="16.04"' ]] && [[ "$VERSION_ID" != 'VERSION_ID="18.04"' ]] && [[ "$VERSION_ID" != 'VERSION_ID="17.10"' ]] && {
 echo " Your version of Debian / Ubuntu is not supported."
 while [[ $CONTINUE != @(y|Y|s|S|n|N) ]]; do
 read -p "Continue ? [y/n]: " -e CONTINUE
 done
 [[ "$CONTINUE" = @(n|N) ]] && exit 1
 }
else
msg -ama " It looks like you are not running this installer on a Debian or Ubuntu system."
msg -bar
return 1
fi
#Pega Interface
NIC=$(ip -4 route ls | grep default | grep -Po '(?<=dev )(\S+)' | head -1)

}
add_repo () {
#INSTALACAO E UPDATE DO REPOSITORIO
# Debian 7
if [[ "$VERSION_ID" = 'VERSION_ID="7"' ]]; then
echo "deb http://build.openvpn.net/debian/openvpn/stable wheezy main" > /etc/apt/sources.list.d/openvpn.list
wget -q -O - https://swupdate.openvpn.net/repos/repo-public.gpg | apt-key add - > /dev/null 2>&1
# Debian 8
elif [[ "$VERSION_ID" = 'VERSION_ID="8"' ]]; then
echo "deb http://build.openvpn.net/debian/openvpn/stable jessie main" > /etc/apt/sources.list.d/openvpn.list
wget -q -O - https://swupdate.openvpn.net/repos/repo-public.gpg | apt-key add - > /dev/null 2>&1
# Ubuntu 14.04
elif [[ "$VERSION_ID" = 'VERSION_ID="14.04"' ]]; then
echo "deb http://build.openvpn.net/debian/openvpn/stable trusty main" > /etc/apt/sources.list.d/openvpn.list
wget -q -O - https://swupdate.openvpn.net/repos/repo-public.gpg | apt-key add - > /dev/null 2>&1
# Ubuntu 16.04
elif [[ "$VERSION_ID" = 'VERSION_ID="16.04"' ]]; then
echo "deb http://build.openvpn.net/debian/openvpn/stable xenial main" > /etc/apt/sources.list.d/openvpn.list
wget -q -O - https://swupdate.openvpn.net/repos/repo-public.gpg | apt-key add - > /dev/null 2>&1
# Ubuntu 18.04
elif [[ "$VERSION_ID" = 'VERSION_ID="18.04"' ]]; then
apt-get remove openvpn -y > /dev/null 2>&1
rm -rf /etc/apt/sources.list.d/openvpn.list > /dev/null 2>&1 
echo "deb http://build.openvpn.net/debian/openvpn/stable bionic main" > /etc/apt/sources.list.d/openvpn.list
wget -q -O - https://swupdate.openvpn.net/repos/repo-public.gpg | apt-key add - > /dev/null 2>&1
fi
}
coleta_variaveis () {
echo -e "\033[1;32m     OPENVPN INSTALLER | VPS-AGN By @KhaledAGN"
msg -bar
msg -ne " Confirm your IP"; read -p ": " -e -i $IP ip
msg -bar
msg -ama " Which port do you want to use?"
msg -bar
    while true; do
    read -p " Port: " -e -i 1194 PORT
    [[ $(mportas|grep -w "$PORT") ]] || break
    echo -e "\033[1;33m This port is in use\033[0m"
    unset PORT
    done
msg -bar
echo -e "\033[1;31m What protocol do you want for OPENVPN connections??"
echo -e "\033[1;31m Unless UDP is blocked, don't use TCP (it's slower)"
#PROTOCOLO
while [[ $PROTOCOL != @(UDP|TCP) ]]; do
read -p " Protocol [UDP/TCP]: " -e -i TCP PROTOCOL
done
[[ $PROTOCOL = "UDP" ]] && PROTOCOL=udp
[[ $PROTOCOL = "TCP" ]] && PROTOCOL=tcp
#DNS
msg -bar
msg -ama " Which DNS do you want to use??"
msg -bar
echo "   1) Use system DNS "
echo "   2) Cloudflare"
echo "   3) Quad"
echo "   4) FDN"
echo "   5) DNS.WATCH"
echo "   6) OpenDNS"
echo "   7) Google DNS"
echo "   8) Yandex Basic"
echo "   9) AdGuard DNS"
msg -bar
while [[ $DNS != @([1-9]) ]]; do
read -p " DNS [1-9]: " -e -i 1 DNS
done
#CIPHER
msg -bar
msg -ama " Choose which encoding you want for the data channel:"
msg -bar
echo "   1) AES-128-CBC"
echo "   2) AES-192-CBC"
echo "   3) AES-256-CBC"
echo "   4) CAMELLIA-128-CBC"
echo "   5) CAMELLIA-192-CBC"
echo "   6) CAMELLIA-256-CBC"
echo "   7) SEED-CBC"
msg -bar
while [[ $CIPHER != @([1-7]) ]]; do
read -p " Cipher [1-7]: " -e -i 1 CIPHER
done
case $CIPHER in
1) CIPHER="cipher AES-128-CBC";;
2) CIPHER="cipher AES-192-CBC";;
3) CIPHER="cipher AES-256-CBC";;
4) CIPHER="cipher CAMELLIA-128-CBC";;
5) CIPHER="cipher CAMELLIA-192-CBC";;
6) CIPHER="cipher CAMELLIA-256-CBC";;
7) CIPHER="cipher SEED-CBC";;
esac
msg -bar
msg -ama " We are ready to set up your OpenVPN server"
msg -bar
read -n1 -r -p " Enter to Continue ..."
tput cuu1 && tput dl1
}
parametros_iniciais # BRIEF VERIFICATION
coleta_variaveis # COLLECTION VARIABLES FOR INSTALLATION
add_repo # UPDATE OPENVPN REPOSITORY AND INSTALL OPENVPN
# Create Directory
[[ ! -d /etc/openvpn ]] && mkdir /etc/openvpn
# Install openvpn
echo -ne " \033[1;31m[ ! ] apt-get update"
apt-get update -q > /dev/null 2>&1 && echo -e "\033[1;32m [OK]" || echo -e "\033[1;31m [FAIL]"
echo -ne " \033[1;31m[ ! ] apt-get install openvpn curl openssl"
apt-get install -qy openvpn curl > /dev/null 2>&1 && apt-get install openssl ca-certificates -y > /dev/null 2>&1 && echo -e "\033[1;32m [OK]" || echo -e "\033[1;31m [FAIL]"
SERVER_IP="$(meu_ip)" # IP Address
[[ -z "${SERVER_IP}" ]] && SERVER_IP=$(ip a | awk -F"[ /]+" '/global/ && !/127.0/ {print $3; exit}')
echo -ne " \033[1;31m[ ! ] Generating Server Config" # Gerando server.con
(
case $DNS in
1)
i=0
grep -v '#' /etc/resolv.conf | grep 'nameserver' | grep -E -o '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}' | while read line; do
dns[$i]="push \"dhcp-option DNS $line\""
done
[[ ! "${dns[@]}" ]] && dns[0]='push "dhcp-option DNS 8.8.8.8"' && dns[1]='push "dhcp-option DNS 8.8.4.4"'
;;
2)dns_fun 3 && dns_fun 4;;
3)dns_fun 5 && dns_fun 6;;
4)dns_fun 7 && dns_fun 8;;
5)dns_fun 9 && dns_fun 10;;
6)dns_fun 11 && dns_fun 12;;
7)dns_fun 13 && dns_fun 14;;
8)dns_fun 15 && dns_fun 16;;
9)dns_fun 17 && dns_fun 18;;
esac
echo 01 > /etc/openvpn/ca.srl
while [[ ! -e /etc/openvpn/dh.pem || -z $(cat /etc/openvpn/dh.pem) ]]; do
openssl dhparam -out /etc/openvpn/dh.pem 2048 &>/dev/null
done
while [[ ! -e /etc/openvpn/ca-key.pem || -z $(cat /etc/openvpn/ca-key.pem) ]]; do
openssl genrsa -out /etc/openvpn/ca-key.pem 2048 &>/dev/null
done
chmod 600 /etc/openvpn/ca-key.pem &>/dev/null
while [[ ! -e /etc/openvpn/ca-csr.pem || -z $(cat /etc/openvpn/ca-csr.pem) ]]; do
openssl req -new -key /etc/openvpn/ca-key.pem -out /etc/openvpn/ca-csr.pem -subj /CN=OpenVPN-CA/ &>/dev/null
done
while [[ ! -e /etc/openvpn/ca.pem || -z $(cat /etc/openvpn/ca.pem) ]]; do
openssl x509 -req -in /etc/openvpn/ca-csr.pem -out /etc/openvpn/ca.pem -signkey /etc/openvpn/ca-key.pem -days 365 &>/dev/null
done
cat > /etc/openvpn/server.conf <<EOF
server 10.8.0.0 255.255.255.0
verb 3
duplicate-cn
key client-key.pem
ca ca.pem
cert client-cert.pem
dh dh.pem
keepalive 10 120
persist-key
persist-tun
comp-lzo
float
push "redirect-gateway def1 bypass-dhcp"
${dns[0]}
${dns[1]}

user nobody
group nogroup

${CIPHER}
proto ${PROTOCOL}
port $PORT
dev tun
status openvpn-status.log
EOF
updatedb
PLUGIN=$(locate openvpn-plugin-auth-pam.so | head -1)
[[ ! -z $(echo ${PLUGIN}) ]] && {
echo "client-to-client
client-cert-not-required
username-as-common-name
plugin $PLUGIN login" >> /etc/openvpn/server.conf
}
) && echo -e "\033[1;32m [OK]" || echo -e "\033[1;31m [FAIL]"
echo -ne " \033[1;31m[ ! ] Generating CA Config" # Generate CA Config
(
while [[ ! -e /etc/openvpn/client-key.pem || -z $(cat /etc/openvpn/client-key.pem) ]]; do
openssl genrsa -out /etc/openvpn/client-key.pem 2048 &>/dev/null
done
chmod 600 /etc/openvpn/client-key.pem
while [[ ! -e /etc/openvpn/client-csr.pem || -z $(cat /etc/openvpn/client-csr.pem) ]]; do
openssl req -new -key /etc/openvpn/client-key.pem -out /etc/openvpn/client-csr.pem -subj /CN=OpenVPN-Client/ &>/dev/null
done
while [[ ! -e /etc/openvpn/client-cert.pem || -z $(cat /etc/openvpn/client-cert.pem) ]]; do
openssl x509 -req -in /etc/openvpn/client-csr.pem -out /etc/openvpn/client-cert.pem -CA /etc/openvpn/ca.pem -CAkey /etc/openvpn/ca-key.pem -days 365 &>/dev/null
done
) && echo -e "\033[1;32m [OK]" || echo -e "\033[1;31m [FAIL]"
teste_porta () {
msg -bar
  echo -ne " \033[1;31m$(fun_trans ${id} "Verifying"):"
  sleep 1s
  [[ ! $(mportas | grep "$1") ]] && {
    echo -e "\033[1;33m [FAIL]\033[0m"
    } || {
    echo -e "\033[1;32m [Pass]\033[0m"
    return 1
    }
   }
msg -bar
echo -e "\033[1;33m Now we need a SQUID Proxy or PYTHON-OPENVPN"
echo -e "\033[1;33m If there is no proxy in the door, a Python proxy will be open!"
msg -bar
while [[ $? != "1" ]]; do
read -p " Confirm the port(Proxy) " -e -i 80 PPROXY
teste_porta $PPROXY
done
cat > /etc/openvpn/client-common.txt <<EOF
# OVPN_ACCESS_SERVER_PROFILE=VPS-AGN
client
nobind
dev tun
redirect-gateway def1 bypass-dhcp
remote-random
remote ${SERVER_IP} ${PORT} ${PROTOCOL}
http-proxy ${SERVER_IP} ${PPROXY}
$CIPHER
comp-lzo yes
keepalive 10 20
float
auth-user-pass
EOF
# Iptables
if [[ ! -f /proc/user_beancounters ]]; then
    INTIP=$(ip a | awk -F"[ /]+" '/global/ && !/127.0/ {print $3; exit}')
    N_INT=$(ip a |awk -v sip="$INTIP" '$0 ~ sip { print $7}')
    iptables -t nat -A POSTROUTING -s 10.8.0.0/24 -o $N_INT -j MASQUERADE
	iptables -t nat -A POSTROUTING -s 10.8.0.0/24 ! -d 10.8.0.0/24 -j SNAT --to $SERVER_IP
else
    iptables -t nat -A POSTROUTING -s 10.8.0.0/24 -j SNAT --to-source $SERVER_IP
	
fi
iptables-save > /etc/iptables.conf
cat > /etc/network/if-up.d/iptables <<EOF
#!/bin/sh
iptables-restore < /etc/iptables.conf
EOF
chmod +x /etc/network/if-up.d/iptables
# Enable net.ipv4.ip_forward
sed -i 's|#net.ipv4.ip_forward=1|net.ipv4.ip_forward=1|' /etc/sysctl.conf
echo 1 > /proc/sys/net/ipv4/ip_forward
# Regras de Firewall 
if pgrep firewalld; then
 if [[ "$PROTOCOL" = 'udp' ]]; then
 firewall-cmd --zone=public --add-port=$PORT/udp
 firewall-cmd --permanent --zone=public --add-port=$PORT/udp
 elif [[ "$PROTOCOL" = 'tcp' ]]; then
 firewall-cmd --zone=public --add-port=$PORT/tcp
 firewall-cmd --permanent --zone=public --add-port=$PORT/tcp
 fi
firewall-cmd --zone=trusted --add-source=10.8.0.0/24
firewall-cmd --permanent --zone=trusted --add-source=10.8.0.0/24
fi
if iptables -L -n | grep -qE 'REJECT|DROP'; then
 if [[ "$PROTOCOL" = 'udp' ]]; then
 iptables -I INPUT -p udp --dport $PORT -j ACCEPT
 elif [[ "$PROTOCOL" = 'tcp' ]]; then
 iptables -I INPUT -p tcp --dport $PORT -j ACCEPT
 fi
iptables -I FORWARD -s 10.8.0.0/24 -j ACCEPT
iptables -I FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
iptables-save > $IPTABLES
fi
if hash sestatus 2>/dev/null; then
 if sestatus | grep "Current mode" | grep -qs "enforcing"; then
  if [[ "$PORT" != '1194' ]]; then
   if ! hash semanage 2>/dev/null; then
   yum install policycoreutils-python -y
   fi
   if [[ "$PROTOCOL" = 'udp' ]]; then
   semanage port -a -t openvpn_port_t -p udp $PORT
   elif [[ "$PROTOCOL" = 'tcp' ]]; then
   semanage port -a -t openvpn_port_t -p tcp $PORT
   fi
  fi
 fi
fi
#Liberando DNS
msg -bar
msg -ama " Last Step, DNS Settings"
msg -bar
while [[ $DDNS != @(n|N) ]]; do
echo -ne "\033[1;33m"
read -p " Agergar HOST DNS [S/N]: " -e -i n DDNS
[[ $DDNS = @(s|S|y|Y) ]] && agrega_dns
done
[[ ! -z $NEWDNS ]] && {
sed -i "/127.0.0.1[[:blank:]]\+localhost/a 127.0.0.1 $NEWDNS" /etc/hosts
for DENESI in $(echo $NEWDNS); do
sed -i "/remote ${SERVER_IP} ${PORT} ${PROTOCOL}/a remote ${DENESI} ${PORT} ${PROTOCOL}" /etc/openvpn/client-common.txt
done
}
msg -bar
# REINICIANDO OPENVPN
if [[ "$OS" = 'debian' ]]; then
 if pgrep systemd-journal; then
 sed -i 's|LimitNPROC|#LimitNPROC|' /lib/systemd/system/openvpn\@.service
 sed -i 's|/etc/openvpn/server|/etc/openvpn|' /lib/systemd/system/openvpn\@.service
 sed -i 's|%i.conf|server.conf|' /lib/systemd/system/openvpn\@.service
 #systemctl daemon-reload
 (
 systemctl restart openvpn
 systemctl enable openvpn
 ) > /dev/null 2>&1
 else
 /etc/init.d/openvpn restart > /dev/null 2>&1
 fi
else
 if pgrep systemd-journal; then
 (
 systemctl restart openvpn@server.service
 systemctl enable openvpn@server.service
 ) > /dev/null 2>&1
 else
 (
 service openvpn restart
 chkconfig openvpn on
 ) > /dev/null 2>&1
 fi
fi
service squid restart &>/dev/null
service squid3 restart &>/dev/null
apt-get install ufw -y > /dev/null 2>&1
for ufww in $(mportas|awk '{print $2}'); do
ufw allow $ufww > /dev/null 2>&1
done
#Restart OPENVPN
(
killall openvpn 2>/dev/null
systemctl stop openvpn@server.service > /dev/null 2>&1
service openvpn stop > /dev/null 2>&1
sleep 0.1s
cd /etc/openvpn > /dev/null 2>&1
screen -dmS ovpnscr openvpn --config "server.conf" > /dev/null 2>&1
) > /dev/null 2>&1
echo -e "\033[1;32m Openvpn configured SUCCESSFULLY!"
msg -bar
msg -ama " Now create an SSH to generate the (.ovpn)!"
msg -bar
return 0
}
edit_ovpn_host () {
msg -bar3
msg -ama " OPENVPN DNS HOST CONFIGURATION"
msg -bar
while [[ $DDNS != @(n|N) ]]; do
echo -ne "\033[1;33m"
read -p " Agregar host [S/N]: " -e -i n DDNS
[[ $DDNS = @(s|S|y|Y) ]] && agrega_dns
done
[[ ! -z $NEWDNS ]] && sed -i "/127.0.0.1[[:blank:]]\+localhost/a 127.0.0.1 $NEWDNS" /etc/hosts
msg -bar
msg -ama " It is necessary to reboot the server to"
msg -ama " For the settings to be made"
msg -bar
}
fun_openvpn () {
[[ -e /etc/openvpn/server.conf ]] && {
unset OPENBAR
[[ $(mportas|grep -w "openvpn") ]] && OPENBAR="\033[1;32m ONLINE" || OPENBAR="\033[1;31m OFFLINE"
msg -ama " OPENVPN IS ALREADY INSTALLED"
msg -bar
echo -e "\033[1;32m [1] >\033[1;36m UNINSTALL OPENVPN"
echo -e "\033[1;32m [2] >\033[1;36m EDIT CLIENT CONFIGURATION \033[1;31m(MEDIANTE NANO)"
echo -e "\033[1;32m [3] >\033[1;36m EDIT SERVER CONFIGURATION \033[1;31m(MEDIANTE NANO)"
echo -e "\033[1;32m [4] >\033[1;36m CHANGE OPENVPN HOST"
echo -e "\033[1;32m [5] >\033[1;36m START OR STOP OPENVPN - $OPENBAR"
msg -bar
while [[ $xption != @([0|1|2|3|4|5]) ]]; do
echo -ne "\033[1;33m $(fun_trans "Opcion"): " && read xption
tput cuu1 && tput dl1
done
case $xption in 
1)
clear
msg -bar
echo -ne "\033[1;97m"
			read -p "YOU WANT TO UNINSTALL OPENVPN? [Y/N]: " -e REMOVE
msg -bar
			if [[ "$REMOVE" = 'y' || "$REMOVE" = 'Y' ]]; then
				PORT=$(grep '^port ' /etc/openvpn/server.conf | cut -d " " -f 2)
				PROTOCOL=$(grep '^proto ' /etc/openvpn/server.conf | cut -d " " -f 2)
				if pgrep firewalld; then
					IP=$(firewall-cmd --direct --get-rules ipv4 nat POSTROUTING | grep '\-s 10.8.0.0/24 '"'"'!'"'"' -d 10.8.0.0/24 -j SNAT --to ' | cut -d " " -f 10)
					# 
					firewall-cmd --zone=public --remove-port=$PORT/$PROTOCOL
					firewall-cmd --zone=trusted --remove-source=10.8.0.0/24
					firewall-cmd --permanent --zone=public --remove-port=$PORT/$PROTOCOL
					firewall-cmd --permanent --zone=trusted --remove-source=10.8.0.0/24
					firewall-cmd --direct --remove-rule ipv4 nat POSTROUTING 0 -s 10.8.0.0/24 ! -d 10.8.0.0/24 -j SNAT --to $IP
					firewall-cmd --permanent --direct --remove-rule ipv4 nat POSTROUTING 0 -s 10.8.0.0/24 ! -d 10.8.0.0/24 -j SNAT --to $IP
				else
					IP=$(grep 'iptables -t nat -A POSTROUTING -s 10.8.0.0/24 ! -d 10.8.0.0/24 -j SNAT --to ' $RCLOCAL | cut -d " " -f 14)
					iptables -t nat -D POSTROUTING -s 10.8.0.0/24 ! -d 10.8.0.0/24 -j SNAT --to $IP
					sed -i '/iptables -t nat -A POSTROUTING -s 10.8.0.0\/24 ! -d 10.8.0.0\/24 -j SNAT --to /d' $RCLOCAL
					if iptables -L -n | grep -qE '^ACCEPT'; then
						iptables -D INPUT -p $PROTOCOL --dport $PORT -j ACCEPT
						iptables -D FORWARD -s 10.8.0.0/24 -j ACCEPT
						iptables -D FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
						sed -i "/iptables -I INPUT -p $PROTOCOL --dport $PORT -j ACCEPT/d" $RCLOCAL
						sed -i "/iptables -I FORWARD -s 10.8.0.0\/24 -j ACCEPT/d" $RCLOCAL
						sed -i "/iptables -I FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT/d" $RCLOCAL
					fi
				fi
				if sestatus 2>/dev/null | grep "Current mode" | grep -q "enforcing" && [[ "$PORT" != '1194' ]]; then
					semanage port -d -t openvpn_port_t -p $PROTOCOL $PORT
				fi
				if [[ "$OS" = 'debian' ]]; then
					apt-get remove --purge -y openvpn
				else
					yum remove openvpn -y
				fi
				rm -rf /etc/openvpn
				rm -f /etc/sysctl.d/30-openvpn-forward.conf
msg -bar
				echo "OpenVPN removed!"
msg -bar
			else
msg -bar
				echo "Uninstall aborted!"
msg -bar
			fi
   return 0;;
 2)
   nano /etc/openvpn/client-common.txt
   return 0;;
 3)
   nano /etc/openvpn/server.conf
   return 0;;
 4)edit_ovpn_host;;
 5)
   [[ $(mportas|grep -w openvpn) ]] && {
   /etc/init.d/openvpn stop > /dev/null 2>&1
   killall openvpn &>/dev/null
   systemctl stop openvpn@server.service &>/dev/null
   service openvpn stop &>/dev/null
   #ps x |grep openvpn |grep -v grep|awk '{print $1}' | while read pid; do kill -9 $pid; done
   } || {
   cd /etc/openvpn
   screen -dmS ovpnscr openvpn --config "server.conf" > /dev/null 2>&1
   cd $HOME
   }
   msg -ama " Procedure Done Successfully"
   msg -bar
   return 0;; 
 0)
   return 0;;
 esac
 exit
 }
[[ -e /etc/squid/squid.conf ]] && instala_ovpn2 && return 0
[[ -e /etc/squid3/squid.conf ]] && instala_ovpn2 && return 0

instala_ovpn2 || return 1
}

fun_openvpn