generate a wireguard configuration client with it's qrcode

gen_wg_conf

#!/bin/bash

#this script generate a configuration for wg that is then send as a qrcode for android app
#require qrencode

if [ $# -lt 3 ];then
    echo "require parameters
    ./script serverip:port client-net server-publickey
        serverip:port 8.8.8.8:8989
        client-net : 10.8.0.5/32
        key : ...
    " 
    exit
fi

SRV_IP=$1  #ip:port
CLT_NET=$2 #10.8.0.5/32
SRV_KEY=$3 #keys

PRKEY=`wg genkey`
PUKEY=`echo $PRKEY|wg pubkey`

echo -e "Private Key : $PRKEY\nPublic Key : $PUKEY"

conf="[Interface]
PrivateKey = $PRKEY
ListenPort = 1789
Address = $CLT_NET
DNS = 8.8.8.8

[Peer]
PublicKey = $SRV_KEY
AllowedIPs = 0.0.0.0/1, 128.0.0.0/1
Endpoint = $SRV_IP
"
echo "$conf"|qrencode -t ansiutf8

echo -e "Server will require : \nwg set wg0 peer $PUKEY allowed-ips $CLT_NET"