#!/bin/bash

## (C) Daniel Teng, 2012

##

## Proxy service configuration script for OSX

## tested on MacOSX Lion 10.7

##

## Adapted from George Goulas's script

## USAGE

##

# $ proxy on

# $ proxy off

# $ proxy status

## SETTINGS

##

# SOCKS PROXY PORT

PORT=7777

# SSH OPTIONS TO CREATE PROXY

SSH_OPTS="-C2qTnNfD"

# user@host

SSH_HOST="username@yourhost.com"

# SSH PORT

SSH_PORT=22

# Pac file

PAC_File="proxy.pac"

# OSX network service to configure proxy for

WIFI_SERVICE="wi-fi"

ETHERNET_SERVICE="ethernet"

# Verbose, if not empty, it prints diagnosing messages

VERBOSE=1

##

## END OF SETTINGS, DO NOT MODIFY PAST THIS POINT

##

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

function enableProxy {

enableProxyForService ${WIFI_SERVICE}

enableProxyForService ${ETHERNET_SERVICE}

ssh_connect

}

function ssh_connect {

${SSH_CMD}

}

function enableProxyForService {

networksetup -setautoproxyurl $1 ${PAC_File}

networksetup -setsocksfirewallproxy $1 localhost ${PORT}

networksetup -setsocksfirewallproxystate $1 on

}

function disableProxy {

killSSHCommand

disableProxyOfService ${WIFI_SERVICE}

disableProxyOfService ${ETHERNET_SERVICE}

}

function killSSHCommand {

ps -ax | grep "${SSH_CMD}" | grep -v grep | awk '{print $1}'| xargs kill

}

function disableProxyOfService {

networksetup -setsocksfirewallproxystate $1 off

}

function showStatus {

showSSHStatus

showStatusOfService ${WIFI_SERVICE}

showStatusOfService ${ETHERNET_SERVICE}

}

function showSSHStatus {

ps -ax | grep "ssh*" | grep -v grep > /dev/null

if [ $? -eq 0 ]; then

echo SSH SOCKS Proxy status: ON

else

echo SSH SOCKS Proxy status: OFF

fi

}

function showStatusOfService {

networksetup -getsocksfirewallproxy $1 | grep Enabled | grep Yes > /dev/null

if [ $? -eq 0 ]; then

echo Proxy setting in network setup for $1: ON

else

echo Proxy setting in network setup for $1: OFF

fi

}

function report {

MSG=$1

if [ -n "${VERBOSE}" ]; then

echo $MSG

fi

}

case "$1" in

on) report "Enabling Proxy"

enableProxy

;;

off) report "Disabling Proxy"

disableProxy

;;

status) echo status

showStatus

;;

*) echo Options: on to enable proxy, off to disable, status to see status.

esac