SSH SOCKS proxy script for OS X inspired by goulas

gistfile1.sh

#!/bin/bash
# add yourself before use to sudoerrs
#  Cmnd_Alias PROXY = /usr/sbin/networksetup -setsocksfirewallproxy*
#  your_login ALL=NOPASSWD: PROXY

SSH_HOST="somehostname"
PORT=9999 # configured in System Preferences
NET_SERVICE="Wi-Fi" # on MacBook Air

SSH_OPTS="-C2qTnNfD"
SSH_CMD="ssh ${SSH_OPTS} ${PORT} ${SSH_HOST}"

function ip {
  curl icanhazip.com
}

function remote_ip {
  curl --socks5 127.0.0.1:${PORT} icanhazip.com
}

function enable_proxy {
  echo "Enabling proxy..."
  sudo /usr/sbin/networksetup -setsocksfirewallproxy ${NET_SERVICE} localhost ${PORT}
  sudo /usr/sbin/networksetup -setsocksfirewallproxystate ${NET_SERVICE} on
  ${SSH_CMD}
  remote_ip
}

function disable_proxy {
  echo "Disabling proxy..."
  ps -ax | grep "${SSH_CMD}" | grep -v grep | awk '{print $1}'| xargs kill
  sudo /usr/sbin/networksetup -setsocksfirewallproxystate ${NET_SERVICE} off
  ip
}

function show_status {
  ps -ax | grep "${SSH_CMD}" | grep -v grep > /dev/null
  if [ $? -eq 0 ]; then
    echo "Tunnel: ✓ [${SSH_HOST}]"
  else
    echo "Tunnel: ✘"
  fi
  /usr/sbin/networksetup -getsocksfirewallproxy ${NET_SERVICE} | grep Enabled | grep Yes > /dev/null
  if [ $? -eq 0 ]; then
    echo "Proxy:  ✓ [${NET_SERVICE}]"
  else                   
    echo "Proxy:  ✘ [${NET_SERVICE}]"
  fi
}

case "$1" in
  on) enable_proxy
    ;;

  off) disable_proxy
    ;;

  *) show_status
esac