mirror of
https://github.com/prurigro/cryptobox.git
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106 lines
3.5 KiB
Text
106 lines
3.5 KiB
Text
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#!/bin/sh
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# --------------------------------------------------- #
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# cryptobox #
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# --------------------------------------------------- #
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# cryptobox is a script used with cryptosetup, mkfs #
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# and losetup, designed to create, mount and umount #
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# encrypted disk images. #
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# #
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# Developer: Prurigro #
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# Contact: prurigro at gmail dot com #
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# Version: 1.0 #
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# #
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# If you find this script useful but have ideas about #
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# how to make it better, found bugs, need help using #
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# it or anything else; feel free to contect me. #
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# #
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# Distributed under the GPLv3; copies can be obtained #
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# on gnu.org @ http://www.gnu.org/copyleft/gpl.html #
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# --------------------------------------------------- #
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NAME="cryptobox"
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if [ $(lsmod | grep -c loop) = 0 ]; then echo "loading 'loop' module"; modprobe loop || echo "failed to load 'loop' module" && exit 1; fi
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if [ $(lsmod | grep -c dm_mod) = 0 ]; then echo "loading 'dm_mod' module"; modprobe dm_mod || echo "failed to load 'dm_mod' module" && exit 1; fi
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function usage {
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echo "Usage: '$NAME option arguments'"
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echo "Options:"
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echo -e "\tc (create) -> $NAME c filename.img filesystem size-in-mb"
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echo -e "\tm (mount) -> $NAME m filename.img /mount/point"
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echo -e "\tu (umount) -> $NAME u /mount/point"
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}
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if [ -z "$1" ]; then
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usage
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exit 1
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elif [ ! "$1" = "c" -a ! "$1" = "m" -a ! "$1" = "u" ]; then
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echo "syntax error"
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usage
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exit 1
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fi
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case "$1" in
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"c")
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if [ -z "$2" -o -z "$3" -o -z "$4" ]; then
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echo "syntax error"
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usage
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exit 1
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fi
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if [ -f "$2" ]; then
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echo "error: $2 already exists"
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exit 1
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fi
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LOOPDEV=$(losetup -f)
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CONTAINER=$(echo "$2" | sed s/"[^\/]*\/"//g | sed s/"\.".*$//g)
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dd bs=1M count="$4" if=/dev/urandom of="$2"
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losetup $LOOPDEV "$2"
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cryptsetup -c aes-xts-plain -y -s 512 luksFormat $LOOPDEV
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cryptsetup luksOpen $LOOPDEV $CONTAINER
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mkfs -t "$3" /dev/mapper/$CONTAINER || echo "error: mkfs failed for filesystem type: $3"
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cryptsetup luksClose $CONTAINER
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losetup -d $LOOPDEV
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;;
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"m")
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if [ -z "$2" -o -z "$3" ]; then
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echo "syntax error"
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usage
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exit 1
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fi
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if [ ! -f "$2" ]; then
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echo "error: $2 does not exist"
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exit 1
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fi
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if [ ! -d "$3" ]; then
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echo "error: $3 does not exist"
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exit 1
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fi
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LOOPDEV=$(losetup -f)
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CONTAINER=$(echo $LOOPDEV | sed s/"[^\/]*\/"//g | sed s/"\.".*$//g)
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losetup $LOOPDEV "$2"
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cryptsetup luksOpen $LOOPDEV $CONTAINER
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mount /dev/mapper/$CONTAINER "$3"
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;;
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"u")
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if [ -z "$2" ]; then
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echo "syntax error"
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usage
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exit 1
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fi
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MOUNT=$(mount | grep $(echo "$2" | sed s/"\/"$//))
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if [ -z "$MOUNT" ]; then
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echo "error: $2 is not mounted"
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exit 1
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fi
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LOOPDEV=$(echo $MOUNT | sed s/\ .*//g | sed s/"\/mapper"//)
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CONTAINER=$(echo $LOOPDEV | sed s/"[^\/]*\/"//g | sed s/"\.".*$//g)
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umount "$2"
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cryptsetup luksClose $CONTAINER
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losetup -d $LOOPDEV
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;;
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generic)
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usage
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;;
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esac
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