rip-dvd-to-einstein

#!/usr/bin/env bash

DEVICE=/dev/ttyUSB0
CDROM=/dev/cdrom
EPOCH=$(date +%s)
CMD_CALIBRATE=C
CMD_GRAB_NEW_DISK=I
CMD_EJECT_DISK_SUCCESS=A
CMD_GRAB_FROM_DRIVE=G
CMD_REJECT_DISK=R

open_cdrom_drive() {
	echo "Attempting to open CD Drive"

	trayopen $CDROM > /dev/null 2>&1
	if [ $? -ne 0 ]; then
		eject_until_open
	fi
}

close_cdrom_drive() {
	echo "Attempting to close CD Drive"

	trayopen $CDROM > /dev/null 2>&1
	if [ $? -ne 1 ]; then
		eject_until_open
	fi

	local _dvd_sleep=1
	until lsdvd -c /dev/cdrom > /dev/null 2>&1; 
	do
		echo "Sleeping to give CDROM drive a chance to wake up"
		backoff $_dvd_sleep
		_dvd_sleep=$(expr $_dvd_sleep + 1)
	done
}

backoff() {
	local _count=$1
	local _sleep=$(expr $_count \* 2)
	echo "This is attempt # $_count"
	echo "Sleeping for $_sleep seconds"
	sleep $_sleep
}

eject_until_open() {
	local _loop_counter=1

	until eject -T; do
		echo "unable to eject disk, waiting for spindown"
		backoff $_loop_counter
		_loop_counter=$(expr $_loop_counter + 1)
	done
}

reset_grabber_head() {
	echo "Attempting to reset grabber head"
	send_command $CMD_CALIBRATE "Unable to calibrate device"
}

grab_new_disk() {
	echo "Grabbing new disk"
	open_cdrom_drive
	send_command $CMD_GRAB_NEW_DISK "Unable to grab new disk"
}

remove_disk_success() {
	echo "Success, removing disk"
	open_cdrom_drive
	send_command $CMD_EJECT_DISK_SUCCESS "Failure to eject CD from drive"
}

remove_disk_fail() {
	echo "Failed, rejecting disk"

	open_cdrom_drive
	send_command $CMD_GRAB_FROM_DRIVE "Unable to grab disk from drive"
	close_cdrom_drive
	send_command $CMD_REJECT_DISK "Unable to reject disk"
}

send_command() {
	local _command=$1
	shift
	local _error=$@

	RESPONSE=$(serial_drive $DEVICE $_command)
	if [ "$RESPONSE" != "X" ]; then
	  echo $_error
	  exit 1
	fi
	
}

get_dvd_title() {
	local _title=""
	local _dvd_info=$(lsdvd -c $CDROM)

	if [ $? -ne 0 ];
	then echo "Unable to get DVD info"
	exit 1
	else
		_title=$(echo $_dvd_info | grep "Disc Title" | gawk '{print $3}' | tr '[:upper:]' '[:lower:]' | tr ' ' '_')
	fi

	echo $_title
}

get_dvd_sha() {
	sha1sum $CDROM | awk '{print $1}'
}

dvd_already_ripped() {
	local _sha=$1
	echo "Checking for $_sha"
	
	if ssh opt@einstein stat /opt/media/isoimages/$_sha.iso \> /dev/null 2\>\&1;
	then true;
	else false;
	fi;
}

dd_iso_to_einstein() {
	echo "Getting DVD Title..."
	local _dvd_title=$1

	echo "Getting DVD Sha1Sum..."
	local _dvd_shasum=$(get_dvd_sha)
	
	if dvd_already_ripped $_dvd_shasum;
	then
		echo "DVD has already been ripped"
		exit 1
	else
		echo "DDing $_dvd_title ($_dvd_shasum) to einstein"
		dd if=$CDROM | ssh opt@einstein "dd of=/opt/media/isoimages/${_dvd_shasum}.iso"

		if [ $? -ne 0 ]; then
			echo "Unable to rip $_remote_file"
			exit 1
		fi

		log_success $_dvd_shasum $_dvd_title
	fi
}

log_success() {
	local _shasum=$1
	local _title=$2

	if [ ! -f riplog.txt ]; then
		touch riplog.txt
	fi

	echo "$_shasum $_title" >> riplog.txt
}

rip_dvd_to_file() {
	local _dvd_title=$(get_dvd_title)
	dd_iso_to_einstein $_dvd_title
}

reset_grabber_head
open_cdrom_drive
grab_new_disk

if [ $? -ne 0 ]; then
	exit 255
fi

close_cdrom_drive
rip_dvd_to_file

if [ $? -ne 0 ]; 
then remove_disk_fail
else remove_disk_success
fi

rip-dvds

#!/usr/bin/env bash

RIP=YES

while [ "$RIP" = "YES"  ]; do
        ./rip-dvd-to-einstein

        if [ $? -eq 255 ]; then
                RIP=NO
        fi
done