Tombautosyncviasshfs

######################DISCLAIMER######################

THE CODE IN THIS PAGE IS HORRIBLE AND DISGUSTING!!!

READ TI JUST IF YOU UNDERSTAND IT AND YOU WANT TO DEBUG

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###Scenario

We have two laptop: a big one and a netbook and we need to share a tomb with personal settings and data.

###Description

unfortunately, we can't just use a "shared" tomb, because tomb cannot be mounted by more than one computer. Furthermore, tomb has (still) no way to use a lock. So, we need to do it ourselves with an external lock (just aside to the tomb).

What we do is (periodically):

1. acquiring the lock
2. mounting the remote tomb
3. using unison to do sync
4. unmounting
5. releasing the lock

###The HORRIBLE code

#!/bin/bash
# LOGIN SCRIPT

lockfile="/local/mountpoint/tomb.lock"

export   imgpath=`zenity --file-selection --text='Seleziona il file da cui   estrarre la chiave' --title='Seleziona un file immagine'`

tomb exhume $imgpath /tmp/local.tomb

(flock 5
if ! tomb open /path/to/local.tomb -k /tmp/local.tomb.key; then
    zenity --error --text='Non sono riuscito a montare la tomba locale!' --title='Orrore!'
    return 1
fi
zenity --notification --text='Tomba locale montata correttamente'

if sshfs remote.server:/ /local/mountpoint/; then
    tomb open /local/mountpoint/remote.tomb -k /tmp/local.tomb.key
    zenity --notification --text=zenity --notification --text='Tomba remota montata correttamente'
else
    zenity --error --text='Non ho potuto montare la tomba remota!' --title='Orrore!'
    return 1
fi
) 5> $lockfile

#!/bin/bash
# POST-HOOK IN REMOTE TOMB

remotetomb="/media/remote.tomb/"
localtomb="/media/local.tomb/"

if unison $remotetomb $localtomb;then
	zenity --notification --text='Dati sincronizzati con successo' --title='Ok!'
else
	zenity --error --text='Non sono riuscito a sincronizzare i dati!' --title='Orrore!'
	return 1
fi

#!/bin/bash
#LOGOUT SCRIPT 

lockfile="/local/mountpoint/tomb.lock"

wipe -f -s /tmp/local.tomb.key

(flock 5
if tomb close all; then
	zenity --notification --text=zenity --notification --text='Tombe smontate correttamente'
else
	zenity --error --text='Non sono riuscito a smontare le tombe!' --title='Orrore!'
	return 1
fi
) 5> $lockfile

#!/bin/bash
# CRON SCRIPT

remotetomb="/media/remote.tomb/"
localtomb="/media/local.tomb/"
lockfile="/local/mountpoint/tomb.lock"

(flock 5
if !ping -c 1 remote.server;then
	return 1
elif  !mountpoint /local/mountpoint/; then
	if sshfs remote.server:/ /local/mountpoint/; then
		tomb open /local/mountpoint/remote.tomb -k /tmp/local.tomb.key;
			unison $remotetomb $localtomb;
	fi
fi
) 5> $lockfile