vps_setup/Wireguard/wg5clients.sh

#!/bin/bash
#    WireGuard VPN多用户服务端  自动配置脚本

#    本脚本(WireGuard 多用户配置)一键安装短网址
#    wget -qO- https://git.io/fpnQt | bash

#    本脚本适合已经安装 WireGuard VPN 的vps
#    如果你的vps没有安装 WireGuard ，可以用下行命令先安装

#    一键安装wireguard 脚本 debian 9
#    wget -qO- git.io/fptwc | bash
#############################################################
# 定义修改端口号，适合已经安装WireGuard而不想改端口

#生成随机端口
rand(){
    min=$1
    max=$(($2-$min+1))
    num=$(cat /dev/urandom | head -n 10 | cksum | awk -F ' ' '{print $1}')
    echo $(($num%$max+$min))  
}

port=$(rand 1000 60000)

mtu=1420
host=$(hostname -s)

ip_list=(2 8 18 88 188 118 158 198 168 186)

# 获得服务器ip，自动获取
if [ $host == "debian" ]; then
    apt update && apt install -y curl 
fi
serverip=$(curl -4 icanhazip.com)

# 安装二维码插件
apt -y install qrencode

wget -O ~/wgmtu  https://raw.githubusercontent.com/hongwenjun/vps_setup/master/Wireguard/wgmtu.sh
#############################################################

# 转到wg配置文件目录
cd /etc/wireguard

# 然后开始生成 密匙对(公匙+私匙)。
wg genkey | tee sprivatekey | wg pubkey > spublickey
wg genkey | tee cprivatekey | wg pubkey > cpublickey

# 生成服务端配置文件
cat <<EOF >wg0.conf
[Interface]
PrivateKey = $(cat sprivatekey)
Address = 10.0.0.1/24 
PostUp   = iptables -A FORWARD -i wg0 -j ACCEPT; iptables -A FORWARD -o wg0 -j ACCEPT; iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
PostDown = iptables -D FORWARD -i wg0 -j ACCEPT; iptables -D FORWARD -o wg0 -j ACCEPT; iptables -t nat -D POSTROUTING -o eth0 -j MASQUERADE
ListenPort = $port
DNS = 8.8.8.8
MTU = $mtu

[Peer]
PublicKey = $(cat cpublickey)
AllowedIPs = 10.0.0.2/32

EOF

# 生成简洁的客户端配置
cat <<EOF >client.conf
[Interface]
PrivateKey = $(cat cprivatekey)
Address = 10.0.0.2/24
DNS = 8.8.8.8
#  MTU = $mtu
#  PreUp =  start   .\route\routes-up.bat
#  PostDown = start  .\route\routes-down.bat

[Peer]
PublicKey = $(cat spublickey)
Endpoint = $serverip:$port
AllowedIPs = 0.0.0.0/0, ::0/0
PersistentKeepalive = 25

EOF

# 添加 1-9 多用户配置子程序
for i in {1..9}
do
    ip=10.0.0.${ip_list[$i]}
    wg genkey | tee cprivatekey | wg pubkey > cpublickey
    
    cat <<EOF >>wg0.conf
[Peer]
PublicKey = $(cat cpublickey)
AllowedIPs = $ip/32

EOF

    cat <<EOF >wg_${host}_$i.conf
[Interface]
PrivateKey = $(cat cprivatekey)
Address = $ip/24
DNS = 8.8.8.8

[Peer]
PublicKey = $(cat spublickey)
Endpoint = $serverip:$port
AllowedIPs = 0.0.0.0/0, ::0/0
PersistentKeepalive = 25

EOF
    cat /etc/wireguard/wg_${host}_$i.conf| qrencode -o wg_${host}_$i.png
done

#  vps网卡如果不是eth0，修改成实际网卡
ni=$(ls /sys/class/net | awk {print} | grep -e eth. -e ens. -e venet.)
if [ $ni != "eth0" ]; then
    sed -i "s/eth0/${ni}/g"  /etc/wireguard/wg0.conf
fi

# 重启wg服务器
wg-quick down wg0
wg-quick up wg0
wg

#定义文字颜色
Green="\033[32m"  && Red="\033[31m" && GreenBG="\033[42;37m" && RedBG="\033[41;37m" && Font="\033[0m"

#定义提示信息
Info="${Green}[信息]${Font}"  &&  OK="${Green}[OK]${Font}"  &&  Error="${Red}[错误]${Font}"

conf_url=http://${serverip}:8000

cat  <<EOF > ~/wg5
 # 打包10个客户端配置，手机扫描二维码2号配置，PC使用1号配置
next() {
    printf "# %-70s\n" "-" | sed 's/\s/-/g'
}

host=$(hostname -s)

cd  /etc/wireguard/
tar cvf  wg5clients.tar  client*  wg*
cat /etc/wireguard/wg_${host}_1.conf | qrencode -o - -t UTF8
echo "# 手机扫描二维码2号配置，PC使用配置复制下面文本"

cat /etc/wireguard/client.conf       && next
cat /etc/wireguard/wg_${host}_1.conf   && next
cat /etc/wireguard/wg_${host}_2.conf   && next
cat /etc/wireguard/wg_${host}_3.conf   && next
cat /etc/wireguard/wg_${host}_4.conf   && next

echo -e "# ${Info} wg 查看有效的客户端；删除客户端使用  wg set wg0 peer xxxx_填对应IP的公钥_xxxx remove"
echo -e "# ${Info} 使用${GreenBG} bash wg5 ${Font} 命令，可以临时网页下载配置和二维码"
echo -e "# ${Info} 使用${GreenBG} bash wgmtu ${Font} 命令，设置服务器端MTU数值或服务端口号"

# echo -e "# ${Info} 请网页打开 ${GreenBG}${conf_url}${Font} 下载配置文件 wg5clients.tar ，${RedBG}注意: 完成后请重启VPS.${Font}"
# echo -e "#  scp [email protected]:/etc/wireguard/wg5clients.tar   wg5clients.tar"
# python -m SimpleHTTPServer 8000 &
echo ""
# echo -e "#  ${Info} 访问 ${GreenBG}${conf_url}${Font} 有惊喜， 手机扫描二维码后请立即重启VPS。"

EOF
bash  ~/wg5

# 用户选择下载配置和修改mtu
sed -i "s/# python -m/python -m/g"  ~/wg5
sed -i "s/# echo -e/echo -e/g"  ~/wg5