Script to install a launchd service for a socat socks proxy

install-socat-service.sh

#!/bin/bash -e

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

while [[ "$#" -gt 0 ]]; do
    case $1 in
        -h|--help) 
            echo "Usage: ./install-socat-service.sh -n <SERVICE_NAME> -p <PORT_TO_BIND> <ONION_URL:PORT>"
            echo "Example: ./install-socat-service.sh -n umbrel-bitcoin-rpc -p 1000 blablabla.onion:8332"
            exit 0
            ;;
        -p|--port) port="$2"; shift ;;
        -n|--name) name="$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 "Please specify an URL: ./install-socat-service.sh -n <SERVICE_NAME> -p <PORT_TO_BIND> <ONION_URL:PORT>"
    echo "Example: ./install-socat-service.sh -n umbrel-bitcoin-rpc -p 1000 blablabla.onion:8332"
    exit 1
fi;

echo "
<?xml version=\"1.0\" encoding=\UTF-8\"?>
<!DOCTYPE plist PUBLIC \"-//Apple//DTD PLIST 1.0//EN\" \"http://www.apple.com/DTDs/PropertyList-1.0.dtd\">
<plist version=\"1.0\">
  <dict>
    <key>Label</key>
    <string>socat.$name</string>
    <key>RunAtLoad</key>
    <true/>
    <key>KeepAlive</key>
    <true/>
    <key>ProgramArguments</key>
    <array>
        <string>/usr/local/bin/socat</string>
        <string>TCP4-LISTEN:$port,reuseaddr,fork</string>
        <string>SOCKS4A:127.0.0.1:$url,socksport=9050</string>
    </array>
    <key>StandardOutPath</key>
    <string>/var/log/$name.log</string>
  </dict>
</plist>
" > ~/Library/LaunchAgents/socat.$name.plist

launchctl load ~/Library/LaunchAgents/socat.$name.plist
launchctl start socat.$name

echo "Service ready:"
echo $(sudo launchctl list | grep $name)
echo "-------------------------------------"
echo "You can now start and stop this service with:"
echo "    sudo launchctl start socat.$name"
echo "    sudo launchctl stop socat.$name"