automount_cryptodisk

#! /bin/bash

#PLEASE, customize this variable with the correct url of your remote key:
REMOTEKEY="192.168.0.1/key.txt"

SCRIPTNAME="automount_cryptodisk_v2"
LOGFILE="/tmp/automount_crypto"
KEYTEMPFILE="/tmp/amcdkey.txt"

    echo "BEGIN Script $SCRIPTNAME " > $LOGFILE

    echo "Download key into a temp file..." >> $LOGFILE
    wget -O $KEYTEMPFILE $REMOTEKEY >> $LOGFILE 2>&1

    echo "Loading key from the temp file..." >> $LOGFILE
    KEYSTRING="$(cat $KEYTEMPFILE)"

    echo "Removing key temp file.." >> $LOGFILE
    rm -rf $KEYTEMPFILE >> $LOGFILE 2>&1

    echo "Retrieving LUCKS device names..." >> $LOGFILE
    DISKTOMOUNT=( $( blkid | grep LUKS | cut --fields=1 --delimiter=: ) )

    #at this point. DISKTOMOUNT is an array containing all the LUCKS devices detected into the system

    #for each device...
    for ITEM in ${DISKTOMOUNT[*]}
    do
      echo "Detected LUKS device: $ITEM" >> $LOGFILE

      DEVICENAME="${ITEM#/dev/}"
      echo "Calculated device name: $DEVICENAME" >> $LOGFILE

      echo "Try to unlock disk..." >> $LOGFILE
      echo $KEYSTRING | cryptsetup luksOpen /dev/$DEVICENAME $DEVICENAME-crypt >> $LOGFILE 2>&1
    done

    echo "END of log." >> $LOGFILE

exit 0