#!/bin/csh
#
# Copyright 2004 Michael L. Love (GPL)
#
# Load two discs with one in each burner, then source this file like so... 
#
# source ~/burnIt go <files>
#
# If all goes well, the resulting
# backup discs will be test-read and each file will be check-summed, so that a
# valid backup is assured.  Checksums will also be recorded to the backup discs
# for restoration purposes.
#
# If everything goes as planned, and the check-sums match, then you will have
# two identical backup copies to take with you.
#
# Change log
#
# 1.6 added better mktemp portability and checksum_dir for checksumming 
#     specific files

########
# here is the code
########

# parse $1 first, must be one of: 
# go checksums mount eject diffs remount load,
# else echo usage

setenv chkArgs false
foreach i (go checksums mount eject diffs remount load checksum_dir)
	if ( $i == $1 ) then
		setenv chkArgs true	
	endif
end

if ( $chkArgs == "false" )  then
echo 'Usage: source burnit-1.2a go <files>'
exit
endif

goto $1

go:

echo Backing up in current directory...
setenv theFiles `echo $* | sed s/'^'{$0}// | sed s/'^'{$1}//`
echo $theFiles

# some problem here, need strlen ;-}
#if ( $theFiles == '' )  then
#echo 'Usage: source burnit-1.2a go <files>'
#exit
#endif

setenv thetmpdir `mktemp -d`
setenv serialNum `echo $thetmpdir|sed s/'\/tmp\/tmp\.'//g`
mkdir -p burnit-$serialNum
chmod 777 burnit-$serialNum
echo 'serial: '$serialNum

setenv theDir `pwd`
setenv theName `echo $theDir|sed s/'\/'/'_'/g`'-'$serialNum'.iso'

#
# Need sanity checks here, priority high
#

dvdrecord dev=/dev/rcd0c speed=4 -dao -v -load&
dvdrecord dev=/dev/rcd1c speed=4 -dao -v -load&

checksums:
mkdir -p ~/md5sums
rm -rf ~/md5sums/sum-0$theName ~/md5sums/sum-1$theName ~/md5sums/sum-F$theName ./sum-F$theName 

echo 'Temporarily moving the files to compatibility directory, 'burnit-$serialNum'...'
echo Getting file names...

#
# Need sanity checks here, priority medium
# mktemp reliable, but directory writable?
#

mv $theFiles burnit-$serialNum
cd burnit-$serialNum
setenv theFiles `tar -cf - $theFiles | tar -tf -`
echo File names done.

echo Checksumming disk ...
foreach i ( $theFiles )
echo $i 
md5 $i >>~/md5sums/sum-F$theName
end

cp ~/md5sums/sum-F$theName ./sum-F$theName 
echo Checksumming disk done. 

#
# Need sanity checks here, priority high
#

mkisofs -l -R . >$theDir/../$theName
wait

cd $theDir
mv burnit-$serialNum/* .
rmdir burnit-$serialNum

#
# Need sanity checks here, priority low
#
dvdrecord dev=/dev/rcd0c speed=4 -dao -v $theDir/../$theName
dvdrecord dev=/dev/rcd1c speed=4 -dao -v $theDir/../$theName

mount:
echo Attemping to mount backup discs...
#
# reload to clear drive buffers
#
dvdrecord dev=/dev/rcd0c speed=4 -dao -v -eject&
dvdrecord dev=/dev/rcd1c speed=4 -dao -v -eject&
wait
dvdrecord dev=/dev/rcd0c speed=4 -dao -v -load&
dvdrecord dev=/dev/rcd1c speed=4 -dao -v -load&
wait

#
# Need sanity checks here, priority high
#

mount -t cd9660 /dev/cd0a /mnt/cdrom0
mount -t cd9660 /dev/cd1a /mnt/cdrom1
echo To see if the discs are mounted type df.


echo Now checksumming cdrom0 ...
cd /mnt/cdrom0
foreach i ( $theFiles )
echo $i 
md5 $i >>~/md5sums/sum-0$theName
end

echo Now checksumming cdrom1 ...
cd /mnt/cdrom1
foreach i ( $theFiles )
echo $i 
md5 $i >>~/md5sums/sum-1$theName
end
echo Checksumming done ...

cd $theDir

eject:
echo Unmounting and ejecting...
umount /mnt/cdrom0 /mnt/cdrom1
eject cd0c&
eject cd1c&
wait

diffs:
echo There should be nothing below this line, but if there is, then check the files. Done!
diff ~/md5sums/sum-F$theName ~/md5sums/sum-1$theName |grep -v sum-.$theName
diff ~/md5sums/sum-F$theName ~/md5sums/sum-0$theName |grep -v sum-.$theName
diff ~/md5sums/sum-0$theName ~/md5sums/sum-1$theName |grep -v sum-.$theName
exit

# for the paranoid, it is also possible to checksum the discs with the following
# code.
#
# foreach i ( /dev/rcd0a /dev/rcd1a )
# cat $i |md5
# end

remount:
dvdrecord dev=/dev/rcd0c speed=4 -dao -v -load&
dvdrecord dev=/dev/rcd1c speed=4 -dao -v -load&
wait

#
# Need sanity checks here, priority low
#
mount -t cd9660 /dev/cd0a /mnt/cdrom0
mount -t cd9660 /dev/cd1a /mnt/cdrom1
echo To see if the discs are mounted type df.
exit

load:
dvdrecord dev=/dev/rcd0c speed=4 -dao -v -load&
dvdrecord dev=/dev/rcd1c speed=4 -dao -v -load&
wait
exit

checksum_dir:
setenv theFiles `echo $* | sed s/'^'{$0}// | sed s/'^'{$1}//`
echo $theFiles
setenv thetmpdir `mktemp -d`
setenv serialNum `echo $thetmpdir|sed s/'\/tmp\/tmp\.'//g`
echo 'serial: '$serialNum
mkdir -p ~/md5sums
rm -rf ~/md5sums/sum-F$serialNum

echo Getting file names...
echo Checksumming disk ...
foreach i ( `tar -cvf /dev/null $theFiles` )
echo $i 
md5 $i >>~/md5sums/sum-F$serialNum
end

echo Checksumming disk done.