#!/bin/bash
# Usage: recv-file <server> <port> <file>

SERVER=$1
PORT=${2:-4443}
FILE=$3

# Recv the key and IV
$KEY_IV=$(nc -w 3 $SERVER $PORT | gpg --decrypt || exit 1)

echo "Received key and iv: $KEY_IV"

echo "Reading file"

nc -w 3 $SERVER $PORT | chacha20 d $KEY_IV | gunzip > $FILE || exit 2

echo "Read"