Adding luks.sh

luks.sh

@@ -0,0 +1,100 @@
+#!/bin/sh
+
+ERR () {
+	printf '[ERROR] %s' "$1"
+	test -n "$2" && exit "$2"
+}
+
+file_path="$1"
+test -n "$file_path" || { echo 'No file given'; exit 1; }
+file="$(basename "$file_path")"
+name="$(echo "$file" | cut -d. -f1)"
+_name="__${name}__"
+ext="$(echo "$file" | cut -d. -f2)"
+block_dev="/dev/mapper/${_name}"
+cur_uid="$(id -u)"
+cur_gid="$(id -g)"
+
+sudo_prog='sudo --prompt=Sudo_Password:'
+
+test "$ext" = 'luks' || ERR "File $file_path does not have extencion .luks." 1
+
+if test -e "$file_path"
+then
+	test -f "$file_path" || ERR "${file_path} Is not a regular file" 1
+else
+	echo -n "File ${file_path} does not exist. Want to create? (Y/n) "
+	read choose
+	case "$choose" in
+		N|n) exit 1 ;;
+	esac
+
+	echo -n "What size? (10G) "
+	read _size
+	if test "$choose" = ''
+	then
+		_size='10G'
+	fi
+	truncate --size="$_size" "$file_path" || ERR "Failed to allocate file: ${file_path}" 1
+
+	cryptsetup luksFormat -c aes-xts-plain64 -s 512 -y "$file_path" || ERR "Failed to format file: ${file_path}" 1
+
+	echo "Successifuly create encrypted file: ${file_path}"
+fi
+
+if test -e ./"$name"
+then
+	if test -d "./${name}" || ERR "File ${name} already exist in current directory. And is not a directory." 1
+
+	if test -b "$block_dev"
+	then
+		echo -n "File ${file_path} Already open. Want to close? (Y/n) "
+		read choose
+		case "$choose" in
+			N|n) exit 0 ;;
+		esac
+		echo "Unmounting ./${name}"
+		$sudo_prog umount ./"$name" || ERR "Failed to unmount ./${name}." 1
+
+		echo "Closing luks block dev ${block_dev}"
+		$sudo_prog cryptsetup close "$block_dev" || ERR "Failed to close luks file: ${file_path}." 1
+
+		echo "Succesfully Closed ${file_path}."
+
+		echo -n "Delete directory ./${name}? (Y/n) "
+		read choose
+		case "$choose" in
+			N|n) exit 0 ;;
+		esac
+
+		rmdir ./$name || ERR "Failed to remove directory: ./${name}" 1
+		exit 0
+	fi
+else
+	mkdir ./"$name"
+fi
+
+echo "Opening luks file: ${file_path} as ${_name}."
+$sudo_prog cryptsetup luksOpen "$file_path" "$_name" || ERR "Failed to open luks file: ${file_path}." 1
+
+echo "Mounting ${block_dev} into ./${name}"
+$sudo_prog mount "$block_dev" ./"$name" || ERR "Failed to mound ${block_dev} on ./${name}." 1
+
+dir_perm="$(stat -c '%u:%g' "$file_path")"
+cur_perm="${cur_uid}:${cur_gid}"
+if ! test "$dir_perm" = "$cur_perm"
+then
+	(
+		echo -n "Directory ./${name} not owned by current user. Want to change direcory owner? (Y/n) "
+		read choose
+		case "$choose" in
+			N|n) exit 0 ;;
+		esac
+		echo "Changing ownership of ./${name} from ${dir_perm} to ${cur_perm}."
+		$sudo_prog chown "$cur_perm" ./"$name" || ERR "Failed to change permission of directory ./${name} from ${dir_perm} to ${cur_perm}." 1
+	) || exit 1
+fi
+
+echo "Opened ${file_path} on ./${name}"
+
+exit 0