wireguard.sh

#!/bin/bash

source "$PWD/.env"
SERVER_PUBLIC_KEY="foo"
CONFIG="${CONFIG:-/etc/wireguard/wg0.conf}"
CIDR="${CIDR:-32}"
DNS="${DNS:-1.1.1.1}"

[ -f "$CONFIG" ] || echo "Config not found" && exit 1

function add_device() {
  NAME=$1
  IP=$2

  PRIVATE_KEY=$(wg genkey)
  PUBLIC_KEY=$(echo "$PRIVATE_KEY" | wg pubkey)

  SERVER_PEER="
[Peer]
#Name: $NAME
PublicKey = $PUBLIC_KEY
AllowedIPs = $IP/$CIDR
"

echo "$SERVER_PEER" >> "$CONFIG"

  CLIENT_CONFIG="
[Interface]
PrivateKey = $PRIVATE_KEY
Address = $IP/$CIDR
DNS = $DNS

[Peer]
PublicKey = $SERVER_PUBLIC_KEY
Endpoint = $HOST:${PORT:-51820}
AllowedIPs = 0.0.0.0/0, ::/0
"

echo "Client Config

$CLIENT_CONFIG
"

  echo "$CLIENT_CONFIG" | qrencode -t ansiutf8
}

add_device "$1" "$2"