Authenicating OpenVPN via 1Password

openvpn-1password.sh

#!/bin/bash
credentials_temp_fifo_file=/tmp/.$$-credentials.pipe
openvpn_temp_fifo_file=/tmp/.$$-openvpn.pipe
mkfifo $credentials_temp_fifo_file

default_op_path='op://empty/item' # 1Password item path
openvpn_exists=$(which openvpn)
op_cli_exists=$(which op)
if [ -z "$openvpn_exists" ]; then
    echo "OpenVPN CLI not found. Please install OpenVPN."
    exit 1
fi
if [ -z "$op_cli_exists" ]; then
    echo "1Password CLI not found. Please install 1Password CLI."
    exit 1
fi
if [ -z "$1" ]; then
    if  [ $default_op_path == "op://empty/item" ]; then
        echo "No 1Password item path provided"
        exit 1
    else
        op_path=$default_op_path
    fi
else
    op_path=$1
fi

op_id=`echo $op_path | cut -d'/' -f4` # 1Password item id
ovpn_file_name=`op item get $op_id|grep Files|head -n 1|awk '{print $2}'`

echo "Starting OpenVPN with credentials from $op_path"
echo "OpenVPN config file name: $ovpn_file_name"
echo "Press Control+C to stop OpenVPN"

op read $op_path/$ovpn_file_name > $openvpn_temp_fifo_file
op read $op_path/auth > $credentials_temp_fifo_file |
sudo openvpn \
--config $openvpn_temp_fifo_file \
--auth-user-pass $credentials_temp_fifo_file

echo "OpenVPN exited with code $?"
rm -f $credentials_temp_fifo_file
rm -f $openvpn_temp_fifo_file

echo "Named Pipe $credentials_temp_fifo_file removed"
echo "Named Pipe $openvpn_temp_fifo_file removed"