Script to install a socat socks proxy service on Linux. Based on systemd.

install-socat-service.sh

#!/bin/bash -e

if [ "$EUID" -ne 0 ]
  then echo "Please run as root"
  exit
fi

check_dependencies () {
  for cmd in "$@"; do
    if ! command -v $cmd >/dev/null 2>&1; then
      echo "This script requires \"${cmd}\" to be installed"
      exit 1
    fi
  done
}

check_dependencies tor socat

usage="Usage: $(basename "$0") [options...] <ONION_URL | ONION_URL:PORT>

Options:
    -h, --help        show this help text
    -p, --port        port to bind to localhost
    -n, --name        proxy name
    --socks-port      socks proxy port
    
Example: $(basename "$0") --name umbrel-bitcoin-rpc --port 1000 blablabla.onion:8332"

while [[ "$#" -gt 0 ]]; do
    case $1 in
        -h|--help) 
            echo "$usage"
            exit 0
            ;;
        -p|--port) port="$2"; shift ;;
        -n|--name) name="$2"; shift ;;
        --socks-port) socksport="$2"; shift ;;
        ${@: -1}) url="$1" ;;
        *) echo "Unknown parameter passed: $1"; exit 1 ;;
    esac
    shift
done

if [ -z ${port+x} ] || [ -z ${name+x} ] || [ -z ${url+x} ];
then
    echo "$usage"
    exit 0
fi;

if [[ "$url" == *".onion" ]];
then
    url="$url:80"
fi;

if [[ ! "$url" == *".onion:"* ]];
then
    echo "Please use a valid onion hostname."
    echo
    echo "$usage"
    exit 0
fi;

echo "
# Installed at /etc/systemd/system/socat.$name.service

[Unit]
Description=Socat Proxy - $name
Requires=tor.service
After=tor.service
Wants=network-online.target
After=network-online.target

[Service]
Type=exec
ExecStart=/bin/socat TCP4-LISTEN:$port,reuseaddr,fork SOCKS4A:127.0.0.1:$url,socksport=${socksport:-9050}
Restart=always
RestartSec=10
RemainAfterExit=yes
User=root
Group=root

[Install]
WantedBy=multi-user.target
" > /etc/systemd/system/socat.$name.service

systemctl daemon-reload
systemctl enable socat.$name.service
# systemctl start socat.$name

echo "Service ready:"
echo $(sudo systemctl status socat.$name)
echo "-------------------------------------"
echo "You can now start and stop this service with:"
echo "    sudo systemctl start socat.$name"
echo "    sudo systemctl stop socat.$name"