mirror of
https://github.com/angristan/openvpn-install.git
synced 2025-03-13 22:23:14 +01:00
948 lines
27 KiB
Bash
Executable File
948 lines
27 KiB
Bash
Executable File
#!/bin/bash
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# Secure OpenVPN server installer for Debian, Ubuntu, CentOS, Amazon Linux 2, Fedora and Arch Linux
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# https://github.com/angristan/openvpn-install
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function isRoot() {
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if [ "$EUID" -ne 0 ]; then
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return 1
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fi
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}
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function tunAvailable() {
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if [ ! -e /dev/net/tun ]; then
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return 1
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fi
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}
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function checkOS() {
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if [[ -e /etc/debian_version ]]; then
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OS="debian"
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# shellcheck disable=SC1091
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source /etc/os-release
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if [[ $ID == "debian" || $ID == "raspbian" ]]; then
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if [[ $VERSION_ID -lt 8 ]]; then
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echo "⚠️ 你的Debian版本没有被支持。"
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echo ""
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echo "如果你用的是Debian8及以上的版本或者unstable/testing分支，你可以继续，但是风险自负。"
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echo ""
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until [[ $CONTINUE =~ (y|n) ]]; do
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read -rp "继续 [y/n]: " -e CONTINUE
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done
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if [[ $CONTINUE == "n" ]]; then
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exit 1
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fi
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fi
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elif [[ $ID == "ubuntu" ]]; then
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OS="ubuntu"
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MAJOR_UBUNTU_VERSION=$(echo "$VERSION_ID" | cut -d '.' -f1)
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if [[ $MAJOR_UBUNTU_VERSION -lt 16 ]]; then
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echo "⚠️ 你的Ubuntu版本没有被支持。"
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echo ""
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echo "如果你用的是Ubuntu16.04及以上的版本或beta分支，你可以继续，但是风险自负。"
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echo ""
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until [[ $CONTINUE =~ (y|n) ]]; do
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read -rp "继续 [y/n]: " -e CONTINUE
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done
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if [[ $CONTINUE == "n" ]]; then
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exit 1
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fi
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fi
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fi
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elif [[ -e /etc/system-release ]]; then
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# shellcheck disable=SC1091
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source /etc/os-release
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if [[ $ID == "fedora" ]]; then
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OS="fedora"
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fi
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if [[ $ID == "centos" ]]; then
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OS="centos"
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if [[ ! $VERSION_ID =~ (7|8) ]]; then
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echo "⚠️ 你的CentOS版本不被支持。"
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echo ""
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echo "本脚本仅支持CentOS7。"
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echo ""
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exit 1
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fi
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fi
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if [[ $ID == "amzn" ]]; then
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OS="amzn"
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if [[ $VERSION_ID != "2" ]]; then
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echo "⚠️ 你的Amazon Linux版本不被支持。"
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echo ""
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echo "本脚本仅支持Amazon Linux 2。"
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echo ""
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exit 1
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fi
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fi
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elif [[ -e /etc/arch-release ]]; then
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OS=arch
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else
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echo "看起来你并没有在 Debian, Ubuntu, Fedora, CentOS, Amazon Linux 2 或 Arch Linux 系统上运行本脚本。"
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exit 1
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fi
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}
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function initialCheck() {
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if ! isRoot; then
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echo "请以root身份运行这个脚本"
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exit 1
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fi
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if ! tunAvailable; then
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echo "你的设备不支持TUN"
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exit 1
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fi
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checkOS
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}
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function installQuestions() {
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echo "欢迎使用Openvpn部署工具！"
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echo "本脚本修改自angristan的安装脚本，项目地址：https://github.com/Nouko61/openvpn-install"
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echo "原项目地址：https://github.com/angristan/openvpn-install"
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echo ""
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echo "脚本会为你搭建一个专门用于局域网游戏的Openvpn服务器，"
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echo "在搭建之前，你需要回答几个问题，"
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echo "安装过程中你可以直接按回车来使用脚本的默认值。"
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echo ""
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echo "我们需要知道Openvpn监听的IP地址，"
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echo "除非你的服务器经过NAT（网络地址转换），否则它应该是你的公网IP。"
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# Detect public IPv4 address and pre-fill for the user
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IP=$(ip -4 addr | sed -ne 's|^.* inet \([^/]*\)/.* scope global.*$|\1|p' | head -1)
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if [[ -z $IP ]]; then
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# Detect public IPv6 address
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IP=$(ip -6 addr | sed -ne 's|^.* inet6 \([^/]*\)/.* scope global.*$|\1|p' | head -1)
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fi
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APPROVE_IP=${APPROVE_IP:-n}
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if [[ $APPROVE_IP =~ n ]]; then
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read -rp "IP地址: " -e -i "$IP" IP
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fi
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# If $IP is a private IP address, the server must be behind NAT
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if echo "$IP" | grep -qE '^(10\.|172\.1[6789]\.|172\.2[0-9]\.|172\.3[01]\.|192\.168)'; then
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echo ""
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echo "看起来你的服务器经过了NAT（网络地址转换）。请问你的公网IP是什么？"
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echo "我们需要它来让客户端连接服务器。"
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until [[ $ENDPOINT != "" ]]; do
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read -rp "公网IP或域名: " -e ENDPOINT
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done
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fi
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echo ""
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echo "你想让Openvpn监听哪个端口"
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echo " 1) 默认: 1194"
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echo " 2) 自定义"
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echo " 3) 随机 [49152-65535]"
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until [[ $PORT_CHOICE =~ ^[1-3]$ ]]; do
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read -rp "选择端口 [1-3]: " -e -i 1 PORT_CHOICE
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done
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case $PORT_CHOICE in
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1)
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PORT="1194"
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;;
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2)
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until [[ $PORT =~ ^[0-9]+$ ]] && [ "$PORT" -ge 1 ] && [ "$PORT" -le 65535 ]; do
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read -rp "自定义端口 [1-65535]: " -e -i 1194 PORT
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done
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;;
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3)
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# Generate random number within private ports range
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PORT=$(shuf -i49152-65535 -n1)
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echo "随机端口: $PORT"
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;;
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esac
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echo ""
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echo "你想让Openvpn使用哪种协议？"
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echo "UDP更加快速。除非你的设备不能使用UDP，否则不要使用TCP。"
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echo " 1) UDP"
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echo " 2) TCP"
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until [[ $PROTOCOL_CHOICE =~ ^[1-2]$ ]]; do
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read -rp "协议 [1-2]: " -e -i 1 PROTOCOL_CHOICE
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done
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case $PROTOCOL_CHOICE in
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1)
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PROTOCOL="udp"
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;;
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2)
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PROTOCOL="tcp"
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;;
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esac
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echo ""
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echo "你想开启压缩吗？开启后可以略微减少流量消耗但是容易遭受攻击。"
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until [[ $COMPRESSION_ENABLED =~ (y|n) ]]; do
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read -rp"开启压缩 [y/n]: " -e -i n COMPRESSION_ENABLED
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done
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if [[ $COMPRESSION_ENABLED == "y" ]]; then
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echo "选择一种压缩算法: (靠前的算法效率更高)"
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echo " 1) LZ4-v2"
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echo " 2) LZ4"
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echo " 3) LZ0"
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until [[ $COMPRESSION_CHOICE =~ ^[1-3]$ ]]; do
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read -rp"压缩算法 [1-3]: " -e -i 1 COMPRESSION_CHOICE
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done
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case $COMPRESSION_CHOICE in
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1)
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COMPRESSION_ALG="lz4-v2"
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;;
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2)
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COMPRESSION_ALG="lz4"
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;;
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3)
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COMPRESSION_ALG="lzo"
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;;
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esac
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fi
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echo ""
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echo "你想允许多人连接同一个账号吗？如果选择n，则需要给每个人分配一个账号。"
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until [[ $MULTI_USER =~ (y|n) ]]; do
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read -rp"允许多人 [y/n]: " -e -i y MULTI_USER
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done
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echo ""
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echo "你想自定义Openvpn的加密方式吗？"
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echo "除非你知道它们是做什么的，你应该使用脚本默认的加密方式。"
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echo "注意，本脚本中默认的选项永远都是最安全的。(而不像Openvpn的默认设置)"
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echo "访问 https://github.com/angristan/openvpn-install#security-and-encryption 了解更多"
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echo ""
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until [[ $CUSTOMIZE_ENC =~ (y|n) ]]; do
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read -rp "自定义加密方式 [y/n]: " -e -i n CUSTOMIZE_ENC
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done
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if [[ $CUSTOMIZE_ENC == "n" ]]; then
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# Use default, sane and fast parameters
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CIPHER="AES-128-GCM"
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CERT_TYPE="1" # ECDSA
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CERT_CURVE="prime256v1"
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CC_CIPHER="TLS-ECDHE-ECDSA-WITH-AES-128-GCM-SHA256"
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DH_TYPE="1" # ECDH
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DH_CURVE="prime256v1"
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HMAC_ALG="SHA256"
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TLS_SIG="1" # tls-crypt
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else
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echo ""
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echo "选择用于数据信道的加密算法："
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echo " 1) AES-128-GCM (推荐)"
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echo " 2) AES-192-GCM"
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echo " 3) AES-256-GCM"
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echo " 4) AES-128-CBC"
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echo " 5) AES-192-CBC"
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echo " 6) AES-256-CBC"
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until [[ $CIPHER_CHOICE =~ ^[1-6]$ ]]; do
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read -rp "数据信道加密算法 [1-6]: " -e -i 1 CIPHER_CHOICE
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done
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case $CIPHER_CHOICE in
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1)
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CIPHER="AES-128-GCM"
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;;
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2)
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CIPHER="AES-192-GCM"
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;;
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3)
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CIPHER="AES-256-GCM"
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;;
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4)
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CIPHER="AES-128-CBC"
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;;
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5)
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CIPHER="AES-192-CBC"
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;;
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6)
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CIPHER="AES-256-CBC"
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;;
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esac
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echo ""
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echo "选择证书私钥的类型："
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echo " 1) ECDSA (推荐)"
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echo " 2) RSA"
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until [[ $CERT_TYPE =~ ^[1-2]$ ]]; do
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read -rp"私钥类型 [1-2]: " -e -i 1 CERT_TYPE
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done
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case $CERT_TYPE in
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1)
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echo ""
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echo "请选择证书私钥的加密曲线："
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echo " 1) prime256v1 (推荐)"
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echo " 2) secp384r1"
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echo " 3) secp521r1"
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until [[ $CERT_CURVE_CHOICE =~ ^[1-3]$ ]]; do
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read -rp"加密曲线 [1-3]: " -e -i 1 CERT_CURVE_CHOICE
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done
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case $CERT_CURVE_CHOICE in
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1)
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CERT_CURVE="prime256v1"
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;;
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2)
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CERT_CURVE="secp384r1"
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;;
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3)
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CERT_CURVE="secp521r1"
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;;
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esac
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;;
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2)
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echo ""
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echo "选择证书的私钥长度："
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echo " 1) 2048 bits (推荐)"
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echo " 2) 3072 bits"
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echo " 3) 4096 bits"
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until [[ $RSA_KEY_SIZE_CHOICE =~ ^[1-3]$ ]]; do
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read -rp "私钥长度 [1-3]: " -e -i 1 RSA_KEY_SIZE_CHOICE
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done
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case $RSA_KEY_SIZE_CHOICE in
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1)
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RSA_KEY_SIZE="2048"
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;;
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2)
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RSA_KEY_SIZE="3072"
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;;
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3)
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RSA_KEY_SIZE="4096"
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;;
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esac
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;;
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esac
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echo ""
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echo "选择用于控制信道的加密算法："
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case $CERT_TYPE in
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1)
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echo " 1) ECDHE-ECDSA-AES-128-GCM-SHA256 (推荐)"
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echo " 2) ECDHE-ECDSA-AES-256-GCM-SHA384"
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until [[ $CC_CIPHER_CHOICE =~ ^[1-2]$ ]]; do
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read -rp"控制信道加密算法 [1-2]: " -e -i 1 CC_CIPHER_CHOICE
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done
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case $CC_CIPHER_CHOICE in
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1)
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CC_CIPHER="TLS-ECDHE-ECDSA-WITH-AES-128-GCM-SHA256"
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;;
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2)
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CC_CIPHER="TLS-ECDHE-ECDSA-WITH-AES-256-GCM-SHA384"
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;;
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esac
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;;
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2)
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echo " 1) ECDHE-RSA-AES-128-GCM-SHA256 (推荐)"
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echo " 2) ECDHE-RSA-AES-256-GCM-SHA384"
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until [[ $CC_CIPHER_CHOICE =~ ^[1-2]$ ]]; do
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read -rp"控制信道加密算法 [1-2]: " -e -i 1 CC_CIPHER_CHOICE
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done
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case $CC_CIPHER_CHOICE in
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1)
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CC_CIPHER="TLS-ECDHE-RSA-WITH-AES-128-GCM-SHA256"
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;;
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2)
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CC_CIPHER="TLS-ECDHE-RSA-WITH-AES-256-GCM-SHA384"
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;;
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esac
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;;
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esac
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echo ""
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echo "选择密钥协商算法："
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echo " 1) ECDH (推荐)"
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echo " 2) DH"
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until [[ $DH_TYPE =~ [1-2] ]]; do
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read -rp"密钥协商算法 [1-2]: " -e -i 1 DH_TYPE
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done
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case $DH_TYPE in
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1)
|
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echo ""
|
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echo "选择密钥协商私钥的加密曲线："
|
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echo " 1) prime256v1 (推荐)"
|
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echo " 2) secp384r1"
|
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echo " 3) secp521r1"
|
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while [[ $DH_CURVE_CHOICE != "1" && $DH_CURVE_CHOICE != "2" && $DH_CURVE_CHOICE != "3" ]]; do
|
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read -rp"加密曲线 [1-3]: " -e -i 1 DH_CURVE_CHOICE
|
||
done
|
||
case $DH_CURVE_CHOICE in
|
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1)
|
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DH_CURVE="prime256v1"
|
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;;
|
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2)
|
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DH_CURVE="secp384r1"
|
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;;
|
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3)
|
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DH_CURVE="secp521r1"
|
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;;
|
||
esac
|
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;;
|
||
2)
|
||
echo ""
|
||
echo "选择密钥协商私钥的长度:"
|
||
echo " 1) 2048 bits (推荐)"
|
||
echo " 2) 3072 bits"
|
||
echo " 3) 4096 bits"
|
||
until [[ $DH_KEY_SIZE_CHOICE =~ ^[1-3]$ ]]; do
|
||
read -rp "私钥长度 [1-3]: " -e -i 1 DH_KEY_SIZE_CHOICE
|
||
done
|
||
case $DH_KEY_SIZE_CHOICE in
|
||
1)
|
||
DH_KEY_SIZE="2048"
|
||
;;
|
||
2)
|
||
DH_KEY_SIZE="3072"
|
||
;;
|
||
3)
|
||
DH_KEY_SIZE="4096"
|
||
;;
|
||
esac
|
||
;;
|
||
esac
|
||
echo ""
|
||
# The "auth" options behaves differently with AEAD ciphers
|
||
if [[ $CIPHER =~ CBC$ ]]; then
|
||
echo "The digest algorithm authenticates data channel packets and tls-auth packets from the control channel."
|
||
elif [[ $CIPHER =~ GCM$ ]]; then
|
||
echo "The digest algorithm authenticates tls-auth packets from the control channel."
|
||
fi
|
||
echo "Which digest algorithm do you want to use for HMAC?"
|
||
echo " 1) SHA-256 (recommended)"
|
||
echo " 2) SHA-384"
|
||
echo " 3) SHA-512"
|
||
until [[ $HMAC_ALG_CHOICE =~ ^[1-3]$ ]]; do
|
||
read -rp "Digest algorithm [1-3]: " -e -i 1 HMAC_ALG_CHOICE
|
||
done
|
||
case $HMAC_ALG_CHOICE in
|
||
1)
|
||
HMAC_ALG="SHA256"
|
||
;;
|
||
2)
|
||
HMAC_ALG="SHA384"
|
||
;;
|
||
3)
|
||
HMAC_ALG="SHA512"
|
||
;;
|
||
esac
|
||
echo ""
|
||
echo "You can add an additional layer of security to the control channel with tls-auth and tls-crypt"
|
||
echo "tls-auth authenticates the packets, while tls-crypt authenticate and encrypt them."
|
||
echo " 1) tls-crypt (recommended)"
|
||
echo " 2) tls-auth"
|
||
until [[ $TLS_SIG =~ [1-2] ]]; do
|
||
read -rp "Control channel additional security mechanism [1-2]: " -e -i 1 TLS_SIG
|
||
done
|
||
fi
|
||
echo ""
|
||
echo "好的，我们已经得到所有需要的信息，已经准备好为你部署Openvpn服务器了。"
|
||
echo "脚本会在安装完成后生成客户端配置文件。"
|
||
APPROVE_INSTALL=${APPROVE_INSTALL:-n}
|
||
if [[ $APPROVE_INSTALL =~ n ]]; then
|
||
read -n1 -r -p "按任意键继续。。。"
|
||
fi
|
||
}
|
||
|
||
function installOpenVPN() {
|
||
if [[ $AUTO_INSTALL == "y" ]]; then
|
||
# Set default choices so that no questions will be asked.
|
||
APPROVE_INSTALL=${APPROVE_INSTALL:-y}
|
||
APPROVE_IP=${APPROVE_IP:-y}
|
||
PORT_CHOICE=${PORT_CHOICE:-1}
|
||
PROTOCOL_CHOICE=${PROTOCOL_CHOICE:-1}
|
||
COMPRESSION_ENABLED=${COMPRESSION_ENABLED:-n}
|
||
CUSTOMIZE_ENC=${CUSTOMIZE_ENC:-n}
|
||
CLIENT=${CLIENT:-client}
|
||
PASS=${PASS:-1}
|
||
CONTINUE=${CONTINUE:-y}
|
||
MULTI_USER=${CONTINUE:-y}
|
||
|
||
# Behind NAT, we'll default to the publicly reachable IPv4/IPv6.
|
||
PUBLIC_IP=$(curl -4 https://ifconfig.co)
|
||
ENDPOINT=${ENDPOINT:-$PUBLIC_IP}
|
||
fi
|
||
|
||
# Run setup questions first, and set other variales if auto-install
|
||
installQuestions
|
||
|
||
# If OpenVPN isn't installed yet, install it. This script is more-or-less
|
||
# idempotent on multiple runs, but will only install OpenVPN from upstream
|
||
# the first time.
|
||
if [[ ! -e /etc/openvpn/server.conf ]]; then
|
||
if [[ $OS =~ (debian|ubuntu) ]]; then
|
||
apt-get update
|
||
apt-get -y install ca-certificates gnupg
|
||
# We add the OpenVPN repo to get the latest version.
|
||
if [[ $VERSION_ID == "8" ]]; then
|
||
echo "deb http://build.openvpn.net/debian/openvpn/stable jessie main" >/etc/apt/sources.list.d/openvpn.list
|
||
wget -O - https://swupdate.openvpn.net/repos/repo-public.gpg | apt-key add -
|
||
apt-get update
|
||
fi
|
||
if [[ $VERSION_ID == "16.04" ]]; then
|
||
echo "deb http://build.openvpn.net/debian/openvpn/stable xenial main" >/etc/apt/sources.list.d/openvpn.list
|
||
wget -O - https://swupdate.openvpn.net/repos/repo-public.gpg | apt-key add -
|
||
apt-get update
|
||
fi
|
||
# Ubuntu > 16.04 and Debian > 8 have OpenVPN >= 2.4 without the need of a third party repository.
|
||
apt-get install -y openvpn iptables openssl wget ca-certificates curl
|
||
elif [[ $OS == 'centos' ]]; then
|
||
yum install -y epel-release
|
||
yum install -y openvpn iptables openssl wget ca-certificates curl tar 'policycoreutils-python*'
|
||
elif [[ $OS == 'amzn' ]]; then
|
||
amazon-linux-extras install -y epel
|
||
yum install -y openvpn iptables openssl wget ca-certificates curl
|
||
elif [[ $OS == 'fedora' ]]; then
|
||
dnf install -y openvpn iptables openssl wget ca-certificates curl policycoreutils-python-utils
|
||
elif [[ $OS == 'arch' ]]; then
|
||
# Install required dependencies and upgrade the system
|
||
pacman --needed --noconfirm -Syu openvpn iptables openssl wget ca-certificates curl
|
||
fi
|
||
# An old version of easy-rsa was available by default in some openvpn packages
|
||
if [[ -d /etc/openvpn/easy-rsa/ ]]; then
|
||
rm -rf /etc/openvpn/easy-rsa/
|
||
fi
|
||
fi
|
||
|
||
# Find out if the machine uses nogroup or nobody for the permissionless group
|
||
if grep -qs "^nogroup:" /etc/group; then
|
||
NOGROUP=nogroup
|
||
else
|
||
NOGROUP=nobody
|
||
fi
|
||
|
||
# Install the latest version of easy-rsa from source, if not already installed.
|
||
if [[ ! -d /etc/openvpn/easy-rsa/ ]]; then
|
||
local version="3.0.7"
|
||
wget -O ~/easy-rsa.tgz https://github.com/OpenVPN/easy-rsa/releases/download/v${version}/EasyRSA-${version}.tgz
|
||
mkdir /etc/openvpn/easy-rsa
|
||
tar xzf ~/easy-rsa.tgz --strip-components=1 --directory /etc/openvpn/easy-rsa
|
||
rm -f ~/easy-rsa.tgz
|
||
|
||
cd /etc/openvpn/easy-rsa/ || return
|
||
case $CERT_TYPE in
|
||
1)
|
||
echo "set_var EASYRSA_ALGO ec" >vars
|
||
echo "set_var EASYRSA_CURVE $CERT_CURVE" >>vars
|
||
;;
|
||
2)
|
||
echo "set_var EASYRSA_KEY_SIZE $RSA_KEY_SIZE" >vars
|
||
;;
|
||
esac
|
||
|
||
# Generate a random, alphanumeric identifier of 16 characters for CN and one for server name
|
||
SERVER_CN="cn_$(head /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 16 | head -n 1)"
|
||
echo "$SERVER_CN" >SERVER_CN_GENERATED
|
||
SERVER_NAME="server_$(head /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 16 | head -n 1)"
|
||
echo "$SERVER_NAME" >SERVER_NAME_GENERATED
|
||
|
||
echo "set_var EASYRSA_REQ_CN $SERVER_CN" >>vars
|
||
|
||
# Create the PKI, set up the CA, the DH params and the server certificate
|
||
./easyrsa init-pki
|
||
|
||
# Workaround to remove unharmful error until easy-rsa 3.0.7
|
||
# https://github.com/OpenVPN/easy-rsa/issues/261
|
||
sed -i 's/^RANDFILE/#RANDFILE/g' pki/openssl-easyrsa.cnf
|
||
|
||
./easyrsa --batch build-ca nopass
|
||
|
||
if [[ $DH_TYPE == "2" ]]; then
|
||
# ECDH keys are generated on-the-fly so we don't need to generate them beforehand
|
||
openssl dhparam -out dh.pem $DH_KEY_SIZE
|
||
fi
|
||
|
||
./easyrsa build-server-full "$SERVER_NAME" nopass
|
||
EASYRSA_CRL_DAYS=3650 ./easyrsa gen-crl
|
||
|
||
case $TLS_SIG in
|
||
1)
|
||
# Generate tls-crypt key
|
||
openvpn --genkey --secret /etc/openvpn/tls-crypt.key
|
||
;;
|
||
2)
|
||
# Generate tls-auth key
|
||
openvpn --genkey --secret /etc/openvpn/tls-auth.key
|
||
;;
|
||
esac
|
||
else
|
||
# If easy-rsa is already installed, grab the generated SERVER_NAME
|
||
# for client configs
|
||
cd /etc/openvpn/easy-rsa/ || return
|
||
SERVER_NAME=$(cat SERVER_NAME_GENERATED)
|
||
fi
|
||
|
||
# Move all the generated files
|
||
cp pki/ca.crt pki/private/ca.key "pki/issued/$SERVER_NAME.crt" "pki/private/$SERVER_NAME.key" /etc/openvpn/easy-rsa/pki/crl.pem /etc/openvpn
|
||
if [[ $DH_TYPE == "2" ]]; then
|
||
cp dh.pem /etc/openvpn
|
||
fi
|
||
|
||
# Make cert revocation list readable for non-root
|
||
chmod 644 /etc/openvpn/crl.pem
|
||
|
||
# Generate server.conf
|
||
echo "port $PORT" >/etc/openvpn/server.conf
|
||
if [[ $IPV6_SUPPORT == 'n' ]]; then
|
||
echo "proto $PROTOCOL" >>/etc/openvpn/server.conf
|
||
elif [[ $IPV6_SUPPORT == 'y' ]]; then
|
||
echo "proto ${PROTOCOL}6" >>/etc/openvpn/server.conf
|
||
fi
|
||
|
||
echo "dev tap
|
||
user nobody
|
||
group $NOGROUP
|
||
persist-key
|
||
persist-tun
|
||
keepalive 10 120
|
||
server 10.233.0.0 255.255.0.0
|
||
ifconfig-pool-persist ipp.txt" >>/etc/openvpn/server.conf
|
||
|
||
if [[ $COMPRESSION_ENABLED == "y" ]]; then
|
||
echo "compress $COMPRESSION_ALG" >>/etc/openvpn/server.conf
|
||
fi
|
||
|
||
if [[ $MULTI_USER == "y" ]]; then
|
||
echo "duplicate-cn" >>/etc/openvpn/server.conf
|
||
fi
|
||
|
||
if [[ $DH_TYPE == "1" ]]; then
|
||
echo "dh none" >>/etc/openvpn/server.conf
|
||
echo "ecdh-curve $DH_CURVE" >>/etc/openvpn/server.conf
|
||
elif [[ $DH_TYPE == "2" ]]; then
|
||
echo "dh dh.pem" >>/etc/openvpn/server.conf
|
||
fi
|
||
|
||
case $TLS_SIG in
|
||
1)
|
||
echo "tls-crypt tls-crypt.key 0" >>/etc/openvpn/server.conf
|
||
;;
|
||
2)
|
||
echo "tls-auth tls-auth.key 0" >>/etc/openvpn/server.conf
|
||
;;
|
||
esac
|
||
|
||
echo "crl-verify crl.pem
|
||
ca ca.crt
|
||
cert $SERVER_NAME.crt
|
||
key $SERVER_NAME.key
|
||
auth $HMAC_ALG
|
||
cipher $CIPHER
|
||
ncp-ciphers $CIPHER
|
||
tls-server
|
||
tls-version-min 1.2
|
||
tls-cipher $CC_CIPHER
|
||
client-config-dir /etc/openvpn/ccd
|
||
status /var/log/openvpn/status.log
|
||
verb 3
|
||
client-to-client" >>/etc/openvpn/server.conf
|
||
|
||
# Create client-config-dir dir
|
||
mkdir -p /etc/openvpn/ccd
|
||
# Create log dir
|
||
mkdir -p /var/log/openvpn
|
||
|
||
# If SELinux is enabled and a custom port was selected, we need this
|
||
if hash sestatus 2>/dev/null; then
|
||
if sestatus | grep "Current mode" | grep -qs "enforcing"; then
|
||
if [[ $PORT != '1194' ]]; then
|
||
semanage port -a -t openvpn_port_t -p "$PROTOCOL" "$PORT"
|
||
fi
|
||
fi
|
||
fi
|
||
|
||
# Finally, restart and enable OpenVPN
|
||
if [[ $OS == 'arch' || $OS == 'fedora' || $OS == 'centos' ]]; then
|
||
# Don't modify package-provided service
|
||
cp /usr/lib/systemd/system/openvpn-server@.service /etc/systemd/system/openvpn-server@.service
|
||
|
||
# Workaround to fix OpenVPN service on OpenVZ
|
||
sed -i 's|LimitNPROC|#LimitNPROC|' /etc/systemd/system/openvpn-server@.service
|
||
# Another workaround to keep using /etc/openvpn/
|
||
sed -i 's|/etc/openvpn/server|/etc/openvpn|' /etc/systemd/system/openvpn-server@.service
|
||
# On fedora, the service hardcodes the ciphers. We want to manage the cipher ourselves, so we remove it from the service
|
||
if [[ $OS == "fedora" ]]; then
|
||
sed -i 's|--cipher AES-256-GCM --ncp-ciphers AES-256-GCM:AES-128-GCM:AES-256-CBC:AES-128-CBC:BF-CBC||' /etc/systemd/system/openvpn-server@.service
|
||
fi
|
||
|
||
systemctl daemon-reload
|
||
systemctl enable openvpn-server@server
|
||
systemctl restart openvpn-server@server
|
||
elif [[ $OS == "ubuntu" ]] && [[ $VERSION_ID == "16.04" ]]; then
|
||
# On Ubuntu 16.04, we use the package from the OpenVPN repo
|
||
# This package uses a sysvinit service
|
||
systemctl enable openvpn
|
||
systemctl start openvpn
|
||
else
|
||
# Don't modify package-provided service
|
||
cp /lib/systemd/system/openvpn\@.service /etc/systemd/system/openvpn\@.service
|
||
|
||
# Workaround to fix OpenVPN service on OpenVZ
|
||
sed -i 's|LimitNPROC|#LimitNPROC|' /etc/systemd/system/openvpn\@.service
|
||
# Another workaround to keep using /etc/openvpn/
|
||
sed -i 's|/etc/openvpn/server|/etc/openvpn|' /etc/systemd/system/openvpn\@.service
|
||
|
||
systemctl daemon-reload
|
||
systemctl enable openvpn@server
|
||
systemctl restart openvpn@server
|
||
fi
|
||
|
||
# If the server is behind a NAT, use the correct IP address for the clients to connect to
|
||
if [[ $ENDPOINT != "" ]]; then
|
||
IP=$ENDPOINT
|
||
fi
|
||
|
||
# client-template.txt is created so we have a template to add further users later
|
||
echo "client" >/etc/openvpn/client-template.txt
|
||
if [[ $PROTOCOL == 'udp' ]]; then
|
||
echo "proto udp" >>/etc/openvpn/client-template.txt
|
||
echo "explicit-exit-notify" >>/etc/openvpn/client-template.txt
|
||
elif [[ $PROTOCOL == 'tcp' ]]; then
|
||
echo "proto tcp-client" >>/etc/openvpn/client-template.txt
|
||
fi
|
||
echo "remote $IP $PORT
|
||
dev tap
|
||
resolv-retry infinite
|
||
nobind
|
||
persist-key
|
||
persist-tun
|
||
remote-cert-tls server
|
||
verify-x509-name $SERVER_NAME name
|
||
auth $HMAC_ALG
|
||
auth-nocache
|
||
cipher $CIPHER
|
||
tls-client
|
||
tls-version-min 1.2
|
||
tls-cipher $CC_CIPHER" >>/etc/openvpn/client-template.txt
|
||
|
||
if [[ $COMPRESSION_ENABLED == "y" ]]; then
|
||
echo "compress $COMPRESSION_ALG" >>/etc/openvpn/client-template.txt
|
||
fi
|
||
|
||
# Generate the custom client.ovpn
|
||
newClient
|
||
echo "如果你想添加更多的账号，你可以重新运行本脚本！"
|
||
}
|
||
|
||
function newClient() {
|
||
echo ""
|
||
echo "请告诉我客户端名称。"
|
||
echo "只能使用字母，不允许有特殊符号。"
|
||
|
||
until [[ $CLIENT =~ ^[a-zA-Z0-9_]+$ ]]; do
|
||
read -rp "客户端名称: " -e CLIENT
|
||
done
|
||
|
||
echo ""
|
||
echo "你想用私钥加密你的配置文件吗？"
|
||
echo " 1) 添加一个没有私钥的账号"
|
||
echo " 2) 添加一个带私钥的账号"
|
||
|
||
until [[ $PASS =~ ^[1-2]$ ]]; do
|
||
read -rp "选项 [1-2]: " -e -i 1 PASS
|
||
done
|
||
|
||
CLIENTEXISTS=$(tail -n +2 /etc/openvpn/easy-rsa/pki/index.txt | grep -c -E "/CN=$CLIENT\$")
|
||
if [[ $CLIENTEXISTS == '1' ]]; then
|
||
echo ""
|
||
echo "这个客户端名称已被使用。"
|
||
exit
|
||
else
|
||
cd /etc/openvpn/easy-rsa/ || return
|
||
case $PASS in
|
||
1)
|
||
./easyrsa build-client-full "$CLIENT" nopass
|
||
;;
|
||
2)
|
||
echo "⚠️ 下面会询问你的私钥 ⚠️"
|
||
./easyrsa build-client-full "$CLIENT"
|
||
;;
|
||
esac
|
||
echo "客户端 $CLIENT 已添加。"
|
||
fi
|
||
|
||
# Home directory of the user, where the client configuration (.ovpn) will be written
|
||
if [ -e "/home/$CLIENT" ]; then # if $1 is a user name
|
||
homeDir="/home/$CLIENT"
|
||
elif [ "${SUDO_USER}" ]; then # if not, use SUDO_USER
|
||
homeDir="/home/${SUDO_USER}"
|
||
else # if not SUDO_USER, use /root
|
||
homeDir="/root"
|
||
fi
|
||
|
||
# Determine if we use tls-auth or tls-crypt
|
||
if grep -qs "^tls-crypt" /etc/openvpn/server.conf; then
|
||
TLS_SIG="1"
|
||
elif grep -qs "^tls-auth" /etc/openvpn/server.conf; then
|
||
TLS_SIG="2"
|
||
fi
|
||
|
||
# Generates the custom client.ovpn
|
||
cp /etc/openvpn/client-template.txt "$homeDir/$CLIENT.ovpn"
|
||
{
|
||
echo "<ca>"
|
||
cat "/etc/openvpn/easy-rsa/pki/ca.crt"
|
||
echo "</ca>"
|
||
|
||
echo "<cert>"
|
||
awk '/BEGIN/,/END/' "/etc/openvpn/easy-rsa/pki/issued/$CLIENT.crt"
|
||
echo "</cert>"
|
||
|
||
echo "<key>"
|
||
cat "/etc/openvpn/easy-rsa/pki/private/$CLIENT.key"
|
||
echo "</key>"
|
||
|
||
case $TLS_SIG in
|
||
1)
|
||
echo "<tls-crypt>"
|
||
cat /etc/openvpn/tls-crypt.key
|
||
echo "</tls-crypt>"
|
||
;;
|
||
2)
|
||
echo "key-direction 1"
|
||
echo "<tls-auth>"
|
||
cat /etc/openvpn/tls-auth.key
|
||
echo "</tls-auth>"
|
||
;;
|
||
esac
|
||
} >>"$homeDir/$CLIENT.ovpn"
|
||
|
||
echo ""
|
||
echo "配置文件已经成功写入 $homeDir/$CLIENT.ovpn"
|
||
echo "下载这个.ovpn文件然后导入你的客户端即可。"
|
||
|
||
exit 0
|
||
}
|
||
|
||
function revokeClient() {
|
||
NUMBEROFCLIENTS=$(tail -n +2 /etc/openvpn/easy-rsa/pki/index.txt | grep -c "^V")
|
||
if [[ $NUMBEROFCLIENTS == '0' ]]; then
|
||
echo ""
|
||
echo "你还没有添加客户端！"
|
||
exit 1
|
||
fi
|
||
|
||
echo ""
|
||
echo "选择你想删除的客户端"
|
||
tail -n +2 /etc/openvpn/easy-rsa/pki/index.txt | grep "^V" | cut -d '=' -f 2 | nl -s ') '
|
||
until [[ $CLIENTNUMBER -ge 1 && $CLIENTNUMBER -le $NUMBEROFCLIENTS ]]; do
|
||
if [[ $CLIENTNUMBER == '1' ]]; then
|
||
read -rp "客户端 [1]: " CLIENTNUMBER
|
||
else
|
||
read -rp "客户端 [1-$NUMBEROFCLIENTS]: " CLIENTNUMBER
|
||
fi
|
||
done
|
||
CLIENT=$(tail -n +2 /etc/openvpn/easy-rsa/pki/index.txt | grep "^V" | cut -d '=' -f 2 | sed -n "$CLIENTNUMBER"p)
|
||
cd /etc/openvpn/easy-rsa/ || return
|
||
./easyrsa --batch revoke "$CLIENT"
|
||
EASYRSA_CRL_DAYS=3650 ./easyrsa gen-crl
|
||
rm -f /etc/openvpn/crl.pem
|
||
cp /etc/openvpn/easy-rsa/pki/crl.pem /etc/openvpn/crl.pem
|
||
chmod 644 /etc/openvpn/crl.pem
|
||
find /home/ -maxdepth 2 -name "$CLIENT.ovpn" -delete
|
||
rm -f "/root/$CLIENT.ovpn"
|
||
sed -i "/^$CLIENT,.*/d" /etc/openvpn/ipp.txt
|
||
|
||
echo ""
|
||
echo "$CLIENT 已被删除。"
|
||
}
|
||
|
||
function removeOpenVPN() {
|
||
echo ""
|
||
# shellcheck disable=SC2034
|
||
read -rp "确定要卸载Openvpn吗？ [y/n]: " -e -i n REMOVE
|
||
if [[ $REMOVE == 'y' ]]; then
|
||
# Get OpenVPN port from the configuration
|
||
PORT=$(grep '^port ' /etc/openvpn/server.conf | cut -d " " -f 2)
|
||
PROTOCOL=$(grep '^proto ' /etc/openvpn/server.conf | cut -d " " -f 2)
|
||
|
||
# Stop OpenVPN
|
||
if [[ $OS =~ (fedora|arch|centos) ]]; then
|
||
systemctl disable openvpn-server@server
|
||
systemctl stop openvpn-server@server
|
||
# Remove customised service
|
||
rm /etc/systemd/system/openvpn-server@.service
|
||
elif [[ $OS == "ubuntu" ]] && [[ $VERSION_ID == "16.04" ]]; then
|
||
systemctl disable openvpn
|
||
systemctl stop openvpn
|
||
else
|
||
systemctl disable openvpn@server
|
||
systemctl stop openvpn@server
|
||
# Remove customised service
|
||
rm /etc/systemd/system/openvpn\@.service
|
||
fi
|
||
|
||
# Remove the iptables rules related to the script
|
||
systemctl stop iptables-openvpn
|
||
# Cleanup
|
||
systemctl disable iptables-openvpn
|
||
rm /etc/systemd/system/iptables-openvpn.service
|
||
systemctl daemon-reload
|
||
rm /etc/iptables/add-openvpn-rules.sh
|
||
rm /etc/iptables/rm-openvpn-rules.sh
|
||
|
||
# SELinux
|
||
if hash sestatus 2>/dev/null; then
|
||
if sestatus | grep "Current mode" | grep -qs "enforcing"; then
|
||
if [[ $PORT != '1194' ]]; then
|
||
semanage port -d -t openvpn_port_t -p "$PROTOCOL" "$PORT"
|
||
fi
|
||
fi
|
||
fi
|
||
|
||
if [[ $OS =~ (debian|ubuntu) ]]; then
|
||
apt-get autoremove --purge -y openvpn
|
||
if [[ -e /etc/apt/sources.list.d/openvpn.list ]]; then
|
||
rm /etc/apt/sources.list.d/openvpn.list
|
||
apt-get update
|
||
fi
|
||
elif [[ $OS == 'arch' ]]; then
|
||
pacman --noconfirm -R openvpn
|
||
elif [[ $OS =~ (centos|amzn) ]]; then
|
||
yum remove -y openvpn
|
||
elif [[ $OS == 'fedora' ]]; then
|
||
dnf remove -y openvpn
|
||
fi
|
||
|
||
# Cleanup
|
||
find /home/ -maxdepth 2 -name "*.ovpn" -delete
|
||
find /root/ -maxdepth 1 -name "*.ovpn" -delete
|
||
rm -rf /etc/openvpn
|
||
rm -rf /usr/share/doc/openvpn*
|
||
rm -f /etc/sysctl.d/20-openvpn.conf
|
||
rm -rf /var/log/openvpn
|
||
|
||
echo ""
|
||
echo "OpenVPN 卸载完成！"
|
||
else
|
||
echo ""
|
||
echo "卸载已取消。"
|
||
fi
|
||
}
|
||
|
||
function manageMenu() {
|
||
echo "欢迎使用Openvpn部署工具！"
|
||
echo "本脚本修改自angristan的安装脚本，项目地址：https://github.com/Nouko61/openvpn-install"
|
||
echo "原项目地址：https://github.com/angristan/openvpn-install"
|
||
echo ""
|
||
echo "看起来你已经把Openvpn安装好了"
|
||
echo ""
|
||
echo "你想要做什么"
|
||
echo " 1) 添加一个新账号"
|
||
echo " 2) 删除一个现有的账号"
|
||
echo " 3) 卸载Openvpn"
|
||
echo " 4) 退出"
|
||
until [[ $MENU_OPTION =~ ^[1-4]$ ]]; do
|
||
read -rp "选项 [1-4]: " MENU_OPTION
|
||
done
|
||
|
||
case $MENU_OPTION in
|
||
1)
|
||
newClient
|
||
;;
|
||
2)
|
||
revokeClient
|
||
;;
|
||
3)
|
||
removeOpenVPN
|
||
;;
|
||
4)
|
||
exit 0
|
||
;;
|
||
esac
|
||
}
|
||
|
||
# Check for root, TUN, OS...
|
||
initialCheck
|
||
|
||
# Check if OpenVPN is already installed
|
||
if [[ -e /etc/openvpn/server.conf && $AUTO_INSTALL != "y" ]]; then
|
||
manageMenu
|
||
else
|
||
installOpenVPN
|
||
fi
|