#!/bin/zsh
#
# Tomb, the Crypto Undertaker
#
# a tool to easily operate file encryption of private and secret data
#
# Copyleft (C) 2007-2011 Denis Roio <jaromil@dyne.org>
#
# This source  code is free  software; you can redistribute  it and/or
# modify it under the terms of  the GNU Public License as published by
# the Free  Software Foundation; either  version 3 of the  License, or
# (at your option) any later version.
#
# This source code is distributed in  the hope that it will be useful,
# but  WITHOUT ANY  WARRANTY;  without even  the  implied warranty  of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# Please refer to the GNU Public License for more details.
#
# You should have received a copy of the GNU Public License along with
# this source code; if not, write to:
# Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

# startup wrapper to open tombs


echo "arg: $1"

try() {
    which ${1} > /dev/null
    if [ $? = 0 ]; then return 0;
    else return -1; fi
}
	


# got an argument
if [ $1 ]; then
# is it a tomb?
    arg="${1%%\.*}.tomb"

    if [ -f $arg ]; then
	file $arg | grep LUKS

	if [ $? = 0 ]; then # tomb is a valid LUKS file

	    tomb mount $arg

	    if [ $? = 0 ]; then	# mount was succesfull (with password and all)
	    # strip extension if there
		tombname="${arg%%.*}"
		tombmap=`mount -l | awk "/\[${tombname}\]$/"' { print $1 } '`
		tombmount=`mount -l | awk "/\[${tombname}\]$/"' { print $3 } '`
		tomb-status $tombmap $tombname $tombmount &!
		exit 0
	    else
		tomb notify "Tomb cannot open." "Are you knocking the wrong door?"
		exit 1
	    fi
	else
	    tomb notify "Not a real Tomb." "We found no real bones in there."
	    exit 1
	fi


    elif [ -d $1 ]; then
	# its a directory
	
# FIXME: somehow xdg-open loses mailcap mimes when executed by tomb-status
#   try xdg-open; if [ $? = 0 ]; then xdg-open ${1}; exit 0; fi
	try gnome-open; if [ $? = 0 ]; then gnome-open ${1}; exit 0; fi
	try thunar; if [ $? = 0 ]; then thunar ${1}; exit 0; fi
	try pcmanfm; if [ $? = 0 ]; then pcmanfm ${1}; exit 0; fi	
	try rox; if [ $? = 0 ]; then rox ${1}; exit 0; fi
	try fsviewer; if [ $? = 0 ]; then fsviewer ${1}; exit 0; fi
#	try xnc; if [ $? = 0 ]; then xnc ${1}; exit 0; fi
	tomb notify "File manager not found." "Tomb cannot guess which filemanager you are using"
	exit 1
    fi
fi


# no argument but on graphical display: creation dialog
if [ -z $DISPLAY ]; then
    echo "[!] tomb-open is a wrapper for the command 'tomb'"
    tomb -h
    exit 1
fi

# no arguments: start guided tomb creation
tomb notify
cat <<EOF
Create a new Tomb
=================

  A Tomb is  a special folder that keeps files  safe using a password:
  it makes use  of strong encryption and helps you keep  the keys on a
  separate USB storage for safer transports.

  Inside a Tomb  you can store private informations  without fear that
  other people  possessing it will discover your  secrets, unless they
  have your USB key and your password.

  If you choose to proceed now, we'll guide you through the creation
  of a new Tomb.
  If you will, I'll be your Crypto Undertaker.
  Do you want to proceed, Master? (y/n)
EOF
echo -n "> "
read -q
if [ $? != 0 ]; then
    echo "Operation aborted."
    exit 1
fi
    # let's proceed
echo "  Please type in the name for your new tomb file:"
echo -n "> "
read filename
echo "  How big you want the Tomb to be?"
echo "  Type a size number in Megabytes:"
echo -n "> "
read size
echo "  You have commanded the creation of this Tomb:"
echo "    $filename ( $size MBytes )";
echo
cat <<EOF
  Please confirm if you want to proceed now:

  You will need the super-user (sudo) password for the computer you
  are using, as well time available: depending how big your tomb will
  be, make sure you are not running low on batteries, or inside a
  detachable screen if on a server. Considering 1GB takes usually
  little less than an hour to be digged.
EOF
echo "  "
echo "  Digging will take quite some time! Should we start? (y/n)"
echo -n "> "
read -q
if [ $? != 0 ]; then
    echo "Operation aborted."
    exit 1
fi
cat <<EOF
  Operation confirmed!  we will  now call the  undertaker to  do its
  job, but  in order  to do so  you will  need to provide  your sudo
  password:
EOF

tomb create ${filename}.tomb $size

if [ $? != 0 ]; then
    echo "An error occurred creating tomb, operation aborted."
    exit 1
else
    tombname="${filename%%.*}"
    tombmap=`mount -l | awk "/\[${tombname}\]$/"' { print $1 } '`
    tombmount=`mount -l | awk "/\[${tombname}\]$/"' { print $3 } '`
    tomb-status $tombmap $tombname $tombmount &!
fi


# if ! [ -r /usr/share/applications/tomb.desktop ]; then
#     echo "  Well done!"
#     echo "  Now the last thing to do is to install Tomb on your desktop:"
#     sudo tomb install
# fi