ssh socks forward proxy with firefox

foxinsock.sh

#! /bin/bash
# usage: chmod +x ./foxinsock.sh && ./foxinsock.sh 123.456.789.012

export PROXY=$1

# assumes 1 default profile "*.default"
if [[ "$OSTYPE" == "darwin"* ]]; then
  export FFPROFILE=/Users/$USER/Library/Application\ Support/Firefox/Profiles/*.default/
else
  export FFPROFILE=$HOME/.mozilla/firefox/profiles/*.default
fi

export CURRENTIP=$(curl ifconfig.co)
echo current $CURRENTIP

# setup route on forward machine
ssh -t root@$PROXY "sudo iptables -A INPUT --src $CURRENTIP --protocol tcp --dport 8500 -j ACCEPT"

# update firefox profile connection settings
sed -i 's/user_pref("network.proxy.socks", ".*");/user_pref("network.proxy.socks", "localhost");/g' $FFPROFILE/prefs.js
sed -i 's/user_pref("network.proxy.socks_port", .*);/user_pref("network.proxy.socks_port", 8500);/g' $FFPROFILE/prefs.js
sed -i 's/user_pref("network.proxy.type", .*);/user_pref("network.proxy.type", 1);/g' $FFPROFILE/prefs.js

# setup tunnel
ssh -D 8500 -f -C -q -N root@$PROXY &

export PROXYIP=$(curl ifconfig.co -x localhost:8500)
echo proxy $PROXYIP

if command -v firefox;then
  export FF=$(command -v firefox)
else
  export FF=/Applications/Firefox.app/Contents/MacOS/firefox
fi

# open firefox with profile
$FF --profile $FFPROFILE

removesock.sh

#! /bin/bash

ssh -t root@$PROXY "sudo iptables -D INPUT --src $CURRENTIP --protocol tcp --dport 8500 -j ACCEPT"
sed -i 's/user_pref("network.proxy.type", .*);/user_pref("network.proxy.type", 0);/g' $FFPROFILE/prefs.js
kill $(ps aux | grep ssh | grep 8500 | awk '{ print $2 }')
export PROXYIP=$(curl ifconfig.co -x localhost:8500)
echo proxy $PROXYIP