image mounting

image_mount

#!/bin/sh
WHICH=/bin/which
REALPATH=$($WHICH realpath)
SED=$($WHICH sed)
GPG=$($WHICH gpg)
MV=$($WHICH mv)
LN=$($WHICH ln)
LOSETUP=$($WHICH losetup)
SUDO=$($WHICH sudo)
MOUNT=$($WHICH mount)
MKTEMP=$($WHICH mktemp)
CHOWN=$($WHICH chown)
ID=$($WHICH id)
CUT=$($WHICH cut)
REV=$($WHICH rev)
RM=$($WHICH rm)

FILE=$($REALPATH $1)
FILE_N=$(echo $FILE | $SED -e 's/\.gpg//g')
SYM=$FILE_N-dir
EXT=$(echo $FILE | $REV | $CUT -f1 -d. | $REV)

if [ ! -f "$FILE" ]; then
  echo "ERROR $FILE does not exist"
  exit 1
fi

if [ "$EXT" = "gpg" ]; then
  if [ -f "$FILE_N" ]; then
      $RM -f $FILE_N
  fi
  $GPG -q -d -o $FILE_N $FILE

  if [ $? -ne 0 ]; then
    echo "could not decrypt file"
    exit 1
  fi

  FILE=$FILE_N
fi

DIR=$($MKTEMP -d)

if [ $? -ne 0 ]; then
  echo "could not create temporary location"
  exit 1
fi

$SUDO $LOSETUP -f $FILE

if [ $? -ne 0 ]; then
  echo "could not find loop device"
  exit 1
fi

DEV=$($LOSETUP -j $FILE | $CUT -f1 -d:)

$SUDO $MOUNT $DEV $DIR

if [ $? -ne 0 ]; then
  echo "could not mount device"
  exit 1
fi

$SUDO $CHOWN $UID:$($ID -g -n $UID) $DIR

if [ $? -ne 0 ]; then
  echo "could not change access rights"
  exit 1
fi
   	
$LN -s $DIR $SYM

image_unmount

#!/bin/sh
WHICH=/bin/which
REALPATH=$($WHICH realpath)
SED=$($WHICH sed)
GPG=$($WHICH gpg)
MV=$($WHICH mv)
LN=$($WHICH ln)
LOSETUP=$($WHICH losetup)
SUDO=$($WHICH sudo)
MOUNT=$($WHICH mount)
UMOUNT=$($WHICH umount)
MKTEMP=$($WHICH mktemp)
CHOWN=$($WHICH chown)
ID=$($WHICH id)
CUT=$($WHICH cut)
REV=$($WHICH rev)
RM=$($WHICH rm)
GREP=$($WHICH grep)

FILE=$($REALPATH $1)
FILE_N=$(echo $FILE | $SED -e 's/\.gpg//g')
SYM=$FILE_N-dir
EXT=$(echo $FILE | $REV | $CUT -f1 -d. | $REV)

if [ ! -f "$FILE" ]; then
  echo "$FILE does not exist"
  exit 1
fi

if [ "$EXT" = "gpg" ]; then
  $MV -f $FILE $FILE.bak
  FILE=$FILE_N
fi

DEV=$($LOSETUP -j $FILE | $CUT -f1 -d:)
FOLDER=`$MOUNT | $GREP "$($LOSETUP -j $FILE | $CUT -f1 -d:)" | $CUT -f3 -d" "`

$SUDO $UMOUNT $DEV

if [ $? -ne 0 ]; then
  echo "could not unmount"
  exit 1
fi

$SUDO $LOSETUP -d $DEV

if [ $? -ne 0 ]; then
  echo "could not detatch device"
  exit 1
fi

$RM -rf $FOLDER

if [ $? -ne 0 ]; then
  echo "could not remove folder"
  exit 1
fi

$RM -f $SYM	

if [ "$EXT" = "gpg" ]; then
  $GPG -q -c -o $FILE.gpg $FILE
  if [ $? -eq 0 ]; then
    $RM -f $FILE
    $RM -f $FILE.bak
  fi
fi