Connect local CrashPlanDesktop to remote CrashPlanService

crashplan-remote.sh

#!/bin/bash
# Connect a local CrashPlanDesktop to a remote CrashPlanService.
# Practically an automation of the steps to open an ssh tunnel and
# modifying .ui_info as described in
# https://support.code42.com/CrashPlan/4/Configuring/Using_CrashPlan_On_A_Headless_Computer
# 
#
# For use from a windows computer with cygwin. Must be run with
# admin rights because the .ui_info file must be admin owned.

local_port=4200
remote=bjorn@192.168.0.200
ufo="/cygdrive/c/ProgramData/CrashPlan/.ui_info"

# this is to be able to close the ssh tunnel again
# https://en.wikibooks.org/wiki/OpenSSH/Cookbook/Multiplexing#Setting_Up_Multiplexing
ssh_control_master_file="~/.ssh/controlmasters/crashplan"



set -e
function cleanup {
	# close tunnel and restore .ui_info
	set +e
	echo "closing ssh tunnel and restoring .ui_info"
	ssh -S $ssh_control_master_file $remote -O stop
	mv $ufo.bak $ufo
}
trap cleanup EXIT



mkdir -p $(dirname $ssh_control_master_file)
cp -n $ufo $ufo.bak #don't overwrite

echo "copying remote .ui_info"
scp -q $remote:/var/lib/crashplan/.ui_info $ufo

remote_port=$(egrep -o '^[0-9]*' $ufo)
sed -i "s/^[0-9]*/$local_port/" $ufo

echo "opening ssh tunnel"
ssh -MS $ssh_control_master_file $remote -fNL $local_port:localhost:$remote_port

"/cygdrive/c/Program Files/CrashPlan/CrashPlanDesktop.exe"