Setup or remove an SSH hidden service on Debian based systems

tor-ssh.sh

#!/usr/bin/env bash
#
# Setup or remove an SSH hidden service on Debian based systems.
#
# Usage:
#
# Setup SSH hidden service:
#   $ curl -Ls https://git.io/tor-ssh | bash -s -- --setup-tor-ssh
#
# Remove SSH hidden service: 
#   $ curl -Ls https://git.io/tor-ssh | bash -s -- --remove-tor-ssh

setup_ssh_hidden_service() {
  echo "Installing Tor..."
  echo ""
  sudo apt-get install -y tor

  echo "Adding SSH hidden service to torrc..."
  echo ""
  torrc_data="
SocksPort 0
HiddenServiceDir /var/lib/tor/umbrel-remote-ssh/
HiddenServicePort 22 127.0.0.1:22"
  echo "${torrc_data}" | sudo tee --append /etc/tor/torrc

  echo "Restarting Tor to load changes..."
  echo ""
  sudo systemctl restart tor
  sleep 5

  echo "Getting Tor hidden service address..."
  echo ""
  sudo cat /var/lib/tor/umbrel-remote-ssh/hostname  
}

remove_ssh_hidden_service() {
  echo "Removing Tor..."
  echo ""
  sudo apt-get purge -y tor
}

arg="${1}"

if [[ "${arg}" ==  "--setup-tor-ssh" ]]
then
  setup_ssh_hidden_service
elif [[ "${arg}" ==  "--remove-tor-ssh" ]]
then
  remove_ssh_hidden_service
else
  echo "Invalid argument, pass in --setup-tor-ssh or --remove-tor-ssh"
fi