#!/usr/bin/env bash
# Simple daemon which listens for TCP connections and
# redirects messages to the local system clipboard.
#
# This works perfectly fine to forward the local
# system clipboard to remote SSH sessions.
#
# Simon Schürg

set -e
set -o pipefail

if ! [ -x "$(command -v socat)" ]; then
  echo 'Error: socat is not installed.' >&2
  exit 1
fi

if ! [ -x "$(command -v xsel)" ]; then
  echo 'Error: xsel is not installed.' >&2
  exit 1
fi

# let this script crash if xsel is not working
xsel > /dev/null

socat -v TCP-LISTEN:5557,fork,bind=localhost EXEC:"xsel --clipboard"