Conty/conty-start.sh

#!/usr/bin/env bash
## Dependencies: bash gzip fuse2 (or fuse3) tar coreutils

msg_root="
Do not run this script as root!

If you really need to run it as root and know what you are doing, set
the ALLOW_ROOT environment variable.
"

# Refuse to run as root unless environment variable is set
if (( EUID == 0 )) && [ -z "$ALLOW_ROOT" ]; then
    echo "${msg_root}"
    exit 1
fi

# Conty version
script_version="1.21.4"

# Important variables to manually adjust after modification!
# Needed to avoid problems with mounting due to an incorrect offset.
script_size=25219
utils_size=2507588

# Full path to the script
script_literal="${BASH_SOURCE[0]}"
script_name="$(basename "${script_literal}")"
script="$(readlink -f "${script_literal}")"

# Help output
msg_help="
Usage: ${script_name} [COMMAND] [ARGUMENTS]


Arguments:
  -e    Extract the image

  -h    Display this text

  -H    Display bubblewrap help

  -l    Show a list of all installed packages

  -m    Mount/unmount the image
        The image will be mounted if it's not, unmounted otherwise.
        Mount point can be changed with the BASE_DIR env variable
        (the default is /tmp).

  -o    Show the image offset

  -u    Update all packages inside the container
        This requires a rebuild of the image, which may take quite
        a lot of time, depending on your hardware and internet speed.
        Additional disk space (about 6x the size of the current file)
        is needed during the update process.

  -U    Same as -u with the addition of updating the init script and
        the integrated utils. This option may break Conty in some cases,
        use with caution!

  -v    Display version of this script

  -V    Display version of the image

Arguments that don't match any of the above will be passed directly to
bubblewrap, so all bubblewrap arguments are supported as well.


Environment variables:
  BASE_DIR          Sets a custom directory where Conty will extract its
                    builtin utilities and mount the image.
                    The default is /tmp.

  DISABLE_NET       Disables network access.

  DISABLE_X11       Disables access to X server.

                    Note: Even with this variable enabled applications
                    can still access your X server if it doesn't use
                    XAUTHORITY and listens to the abstract socket. This
                    can be solved by enabling XAUTHORITY, disabling the
                    abstract socket or by disabling network access.

  HOME_DIR          Sets the home directory to a custom location.
                    For example: HOME_DIR=\"$HOME/custom_home\"
                    Note: If this variable is set the home directory
                    inside the container will still appear as $HOME,
                    even though the custom directory is used.

  QUIET_MODE        Disables all non-error Conty messages.
                    Doesn't affect the output of applications.

  SANDBOX           Enables a sandbox.
                    To control which files and directories are available
                    inside the container, you can use the --bind and
                    --ro-bind launch arguments.
                    (See bubblewrap help for more info).

  SANDBOX_LEVEL     Controls the strictness of the sandbox.
                    Available levels:
                      1: Isolates all user files.
                      2: Additionally disables dbus and hides all
                         running processes.
                      3: Additionally disables network access and
                         isolates X11 server with Xephyr.
                    The default is 1.

  USE_SYS_UTILS     Tells the script to use squashfuse/dwarfs and bwrap
                    installed on the system instead of the builtin ones.

  XEPHYR_SIZE       Sets the size of the Xephyr window. The default is
                    800x600.

Additional notes:
System directories/files will not be available inside the container if
you set the SANDBOX variable but don't bind (mount) any items or set
HOME_DIR. A fake temporary home directory will be used instead.

If the executed script is a symlink with a different name, said name
will be used as the command name.
For instance, if the script is a symlink with the name \"wine\" it will
automatically run wine during launch.

Besides updating all packages, you can also install and remove packages
using the same -u (or -U) argument. To install packages add them as
additional arguments, to remove add a minus sign (-) before their names.
  To install: ${script_name} -u pkgname1 pkgname2 pkgname3 ...
  To remove: ${script_name} -u -pkgname1 -pkgname2 -pkgname3 ...
In this case Conty will update all packages and additionally install
and/or remove specified packages.

If you are using an Nvidia GPU, please read the following:
https://github.com/Kron4ek/Conty#known-issues
"

# MD5 of the last 1 MB of the file
script_md5="$(tail -c 1000000 "${script}" | md5sum | head -c 7)"

script_id="${RANDOM}"

# Working directory where the utils will be extracted
# And where the image will be mounted
# The default path is /tmp/scriptname_username_scriptmd5
# And if /tmp is mounted with noexec, the default path
# is ~/.local/share/Conty/scriptname_username_scriptmd5
conty_dir_name="$(basename "${script}")"_"${USER}"_"${script_md5}"

if  [ -z "${BASE_DIR}" ]; then
	export working_dir=/tmp/"${conty_dir_name}"
else
	export working_dir="${BASE_DIR}"/"${conty_dir_name}"
fi

mount_point="${working_dir}"/mnt

# Offset where the image is stored
offset=$((script_size+utils_size))

# Detect if the image is compressed with DwarFS or SquashFS
if [ "$(tail -c +$((offset+1)) "${script}" | head -c 6)" = "DWARFS" ]; then
	dwarfs_image=1
fi

dwarfs_cache_size="128M"
dwarfs_num_workers="2"

# These arguments are used to rebuild the image when using the self-update function
squashfs_comp_arguments=(-b 1M -comp zstd -Xcompression-level 19)
dwarfs_comp_arguments=(-l7 -C zstd:level=19 --metadata-compression null \
                       -S 22 -B 2 --order nilsimsa:255:60000:60000 \
                       --bloom-filter-size 11 -W 15 -w 3 --no-create-timestamp)

unset script_is_symlink
if [ -L "${script_literal}" ]; then
    script_is_symlink=1
fi

if [ -z "${script_is_symlink}" ]; then
    if [ "$1" = "-h" ] || [ -z "$1" ]; then
        echo "${msg_help}"
        exit
    elif [ "$1" = "-v" ]; then
        echo "${script_version}"
        exit
    elif [ "$1" = "-o" ]; then
        echo "${offset}"
        exit
    fi
fi

show_msg () {
	if [ "${QUIET_MODE}" != 1 ]; then
		echo "$@"
	fi
}

exec_test () {
	mkdir -p "${working_dir}"

	exec_test_file="${working_dir}"/exec_test

	rm -f "${exec_test_file}"
	touch "${exec_test_file}"
	chmod +x "${exec_test_file}"

	[ -x "${exec_test_file}" ]
}

launch_wrapper () {
	if [ "${USE_SYS_UTILS}" = 1 ]; then
		"$@"
	else
		"${working_dir}"/utils/ld-linux-x86-64.so.2 --library-path "${working_dir}"/utils "$@"
	fi
}

# Check if FUSE is installed
if ! command -v fusermount3 1>/dev/null && ! command -v fusermount 1>/dev/null; then
	echo "Please install fuse2 or fuse3 and run the script again."
	exit 1
fi

if command -v fusermount3 1>/dev/null; then
	fuse_version=3
fi

# Set the dwarfs block cache size depending on how much RAM is available
# Also set the number of workers depending on the number of CPU cores
if [ "${dwarfs_image}" = 1 ]; then
	if getconf _PHYS_PAGES &>/dev/null && getconf PAGE_SIZE &>/dev/null; then
		memory_size="$(($(getconf _PHYS_PAGES) * $(getconf PAGE_SIZE) / (1024 * 1024)))"

		if [ "${memory_size}" -ge 23000 ]; then
			dwarfs_cache_size="1024M"
		elif [ "${memory_size}" -ge 15000 ]; then
			dwarfs_cache_size="512M"
		elif [ "${memory_size}" -ge 7000 ]; then
			dwarfs_cache_size="256M"
		elif [ "${memory_size}" -ge 3000 ]; then
			dwarfs_cache_size="128M"
		elif [ "${memory_size}" -ge 1500 ]; then
			dwarfs_cache_size="64M"
		else
			dwarfs_cache_size="32M"
		fi
	fi

	if getconf _NPROCESSORS_ONLN &>/dev/null; then
		dwarfs_num_workers="$(getconf _NPROCESSORS_ONLN)"

		if [ "${dwarfs_num_workers}" -ge 8 ]; then
			dwarfs_num_workers=8
		fi
	fi
fi

# Extract utils.tar.gz
mkdir -p "${working_dir}"

if [ "${USE_SYS_UTILS}" != 1 ]; then
	# Check if filesystem of the working_dir is mounted without noexec
	if ! exec_test; then
		if [ -z "${BASE_DIR}" ]; then
			export working_dir="${HOME}"/.local/share/Conty/"${conty_dir_name}"
			mount_point="${working_dir}"/mnt
		fi

		if ! exec_test; then
			echo "Seems like /tmp is mounted with noexec or you don't have write access!"
			echo "Please remount it without noexec or set BASE_DIR to a different location."

			exit 1
		fi
	fi

	if ! command -v tar 1>/dev/null || ! command -v gzip 1>/dev/null; then
		echo "Please install tar and gzip and run the script again."
		exit 1
	fi

	if [ "${dwarfs_image}" = 1 ]; then
		mount_tool="${working_dir}"/utils/dwarfs"${fuse_version}"
		extraction_tool="${working_dir}"/utils/dwarfsextract
	else
		mount_tool="${working_dir}"/utils/squashfuse"${fuse_version}"
		extraction_tool="${working_dir}"/utils/unsquashfs
	fi

	bwrap="${working_dir}"/utils/bwrap

	if [ ! -f "${mount_tool}" ] || [ ! -f "${bwrap}" ]; then
		tail -c +$((script_size+1)) "${script}" | head -c "${utils_size}" | tar -C "${working_dir}" -zxf -

		if [ ! -f "${mount_tool}" ] || [ ! -f "${bwrap}" ]; then
			clear
			echo "The integrated utils were not extracted!"
			echo "Perhaps something is wrong with the integrated utils.tar.gz."

			exit 1
		fi

		chmod +x "${mount_tool}"
		chmod +x "${bwrap}"
		chmod +x "${extraction_tool}" 2>/dev/null
	fi
else
	if ! command -v bwrap 1>/dev/null; then
		echo "USE_SYS_UTILS is enabled, but bubblewrap is not installed!"
		echo "Please install it and run the script again."

		exit 1
	fi

	bwrap=bwrap

	if [ "${dwarfs_image}" = 1 ]; then
		if ! command -v dwarfs 1>/dev/null && ! command -v dwarfs2 1>/dev/null; then
			echo "USE_SYS_UTILS is enabled, but dwarfs is not installed!"
			echo "Please install it and run the script again."

			exit 1
		fi

		if command -v dwarfs2 1>/dev/null; then
			mount_tool=dwarfs2
		else
			mount_tool=dwarfs
		fi

		extraction_tool=dwarfsextract
	else
		if ! command -v squashfuse 1>/dev/null; then
			echo "USE_SYS_UTILS is enabled, but squashfuse is not installed!"
			echo "Please install it and run the script again."

			exit 1
		fi

		mount_tool=squashfuse
		extraction_tool=unsquashfs
	fi

	show_msg "Using system-wide ${mount_tool} and bwrap"
fi

if [ "$1" = "-e" ] && [ -z "${script_is_symlink}" ]; then
	if command -v "${extraction_tool}" 1>/dev/null; then
		if [ "${dwarfs_image}" = 1 ]; then
			echo "Extracting the image..."
			mkdir "$(basename "${script}")"_files
			launch_wrapper "${extraction_tool}" -i "${script}" -o "$(basename "${script}")"_files -O "${offset}"
			echo "Done"
		else
			launch_wrapper "${extraction_tool}" -o "${offset}" -user-xattrs -d "$(basename "${script}")"_files "${script}"
		fi
	else
		echo "Extraction tool not found"
		exit 1
	fi

	exit
fi

if [ "$1" = "-H" ] && [ -z "${script_is_symlink}" ]; then
	launch_wrapper "${bwrap}" --help
	exit
fi

if { [ "$1" = "-u" ] || [ "$1" = "-U" ]; } && [ -z "${script_is_symlink}" ]; then
	OLD_PWD="${PWD}"

	# Check if the current directory is writable
	# And if it's not, use ~/.local/share/Conty as a working directory
	if ! touch test_rw 2>/dev/null; then
		update_temp_dir="${HOME}"/.local/share/Conty/conty_update_temp
	else
		update_temp_dir="${OLD_PWD}"/conty_update_temp
	fi
	rm -f test_rw

	# Remove conty_update_temp directory if it already exists
	chmod -R 700 "${update_temp_dir}" 2>/dev/null
	rm -rf "${update_temp_dir}"

	mkdir -p "${update_temp_dir}"
	cd "${update_temp_dir}" || exit 1

	if command -v awk 1>/dev/null; then
		current_file_size="$(stat -c "%s" "${script}")"
		available_disk_space="$(df -P -B1 "${update_temp_dir}" | awk 'END {print $4}')"
		required_disk_space="$((current_file_size*7))"

		if [ "${available_disk_space}" -lt "${required_disk_space}" ]; then
			echo "Not enough free disk space"
			echo "You need at least $((required_disk_space/1024/1024)) MB of free space"
			exit 1
		fi
	fi

	tail -c +$((script_size+1)) "${script}" | head -c "${utils_size}" | tar -C "${update_temp_dir}" -zxf -

	if [ "${dwarfs_image}" = 1 ]; then
		chmod +x utils/dwarfsextract 2>/dev/null
		chmod +x utils/mkdwarfs 2>/dev/null

		if [ ! -x "utils/dwarfsextract" ] || [ ! -x "utils/mkdwarfs" ]; then
			missing_utils="dwarfsextract and/or mkdwarfs"
		fi
	else
		chmod +x utils/unsquashfs 2>/dev/null
		chmod +x utils/mksquashfs 2>/dev/null

		if [ ! -x "utils/unsquashfs" ] || [ ! -x "utils/mksquashfs" ]; then
			missing_utils="unsquashfs and/or mksquashfs"
		fi
	fi

	if [ -n "${missing_utils}" ]; then
		echo "The integrated utils don't contain ${missing_utils}."
		echo "Or your file system is mounted with noexec."
		exit 1
	fi

	tools_wrapper () {
		"${update_temp_dir}"/utils/ld-linux-x86-64.so.2 --library-path "${update_temp_dir}"/utils "$@"
	}

	# Since Conty is used here to update itself, it's necessary to disable
	# some environment variables for this to work properly
	unset DISABLE_NET
	unset HOME_DIR
	unset SANDBOX_LEVEL

	# Enable SANDBOX
	export SANDBOX=1

	export QUIET_MODE=1

	# Extract the image
	clear
	echo "Extracting the image"
	if [ "${dwarfs_image}" = 1 ]; then
		mkdir sqfs
		tools_wrapper "${update_temp_dir}"/utils/dwarfsextract \
		-i "${script}" -o sqfs -O "${offset}" --cache-size "${dwarfs_cache_size}" \
		--num-workers "${dwarfs_num_workers}"
	else
		tools_wrapper "${update_temp_dir}"/utils/unsquashfs \
		-o "${offset}" -user-xattrs -d sqfs "${script}"
	fi

	# Download or extract the utils.tar.gz and the init script depending
	# on what command line argument is used (-u or -U)
	clear
	if [ "$1" = "-U" ] && command -v curl 1>/dev/null; then
		if [ "${dwarfs_image}" = 1 ]; then
			utils="utils_dwarfs.tar.gz"
		else
			utils="utils.tar.gz"
		fi

		echo "Downloading the init script and the utils"
		curl -#LO "https://github.com/Kron4ek/Conty/raw/master/conty-start.sh"
		curl -#Lo utils.tar.gz "https://github.com/Kron4ek/Conty/raw/master/${utils}"
	fi

	if [ ! -s conty-start.sh ] || [ ! -s utils.tar.gz ]; then
		echo "Extracting the init script and the integrated utils"
		tail -c +$((script_size+1)) "${script}" | head -c "${utils_size}" > utils.tar.gz
		head -c "${script_size}" "${script}" > conty-start.sh
	fi

	# Check if there are additional arguments passed
	shift
	if [ -n "$1" ]; then
		packagelist=("$@")

		# Check which packages to install and which ones to remove
		for i in "${packagelist[@]}"; do
			if [ "$(echo "${i}" | head -c 1)" = "-" ]; then
				pkgsremove+=" ${i:1}"
			else
				pkgsinstall+=" ${i}"
			fi
		done

		export pkgsremove
		export pkgsinstall
	fi

	# Generate a script to perform inside Conty
	# It updates Arch mirrorlist
	# Updates keyrings
	# Updates all installed packages
	# Installs additional packages (if requested)
	# Removes packages (if requested)
	# Clears package cache
	# Updates SSL CA certificates
	# Generates locales
	cat <<EOF > container-update.sh
reflector --protocol https --score 5 --sort rate --save /etc/pacman.d/mirrorlist
fakeroot -- pacman -Syy 2>/dev/null
date -u +"%d-%m-%Y %H:%M (DMY UTC)" > /version
fakeroot -- pacman --noconfirm -S archlinux-keyring 2>/dev/null
fakeroot -- pacman --noconfirm -S chaotic-keyring 2>/dev/null
rm -rf /etc/pacman.d/gnupg
fakeroot -- pacman-key --init
echo "keyserver hkps://keyserver.ubuntu.com" >> /etc/pacman.d/gnupg/gpg.conf
fakeroot -- pacman-key --populate archlinux
fakeroot -- pacman-key --populate chaotic
fakeroot -- pacman --noconfirm --overwrite "*" -Su 2>/dev/null
fakeroot -- pacman --noconfirm -Runs ${pkgsremove} 2>/dev/null
fakeroot -- pacman --noconfirm -S ${pkgsinstall} 2>/dev/null
ldconfig -C /etc/ld.so.cache
rm -f /var/cache/pacman/pkg/*
pacman -Qn > /pkglist.x86_64.txt
pacman -Qm >> /pkglist.x86_64.txt
update-ca-trust
locale-gen
EOF

    rm -f sqfs/etc/resolv.conf
    cp /etc/resolv.conf sqfs/etc/resolv.conf
    mkdir -p sqfs/run/shm

	# Execute the previously generated script
	clear
	echo "Updating and installing packages"
	bash "${script}" --bind sqfs / --ro-bind /sys /sys --dev-bind /dev /dev \
				--proc /proc --bind "${update_temp_dir}" "${update_temp_dir}" \
				bash container-update.sh

	# Create an image
	clear
	echo "Creating an image"
	if [ "${dwarfs_image}" = 1 ]; then
		tools_wrapper "${update_temp_dir}"/utils/mkdwarfs \
		-i sqfs -o image "${dwarfs_comp_arguments[@]}"
	else
		tools_wrapper "${update_temp_dir}"/utils/mksquashfs \
		sqfs image "${squashfs_comp_arguments[@]}"
	fi

	# Combine into a single executable
	clear
	echo "Combining everything into a single executable"
	cat conty-start.sh utils.tar.gz image > conty_updated.sh
	chmod +x conty_updated.sh

	mv -f "${script}" "${script}".old."${script_md5}" 2>/dev/null
	mv -f conty_updated.sh "${script}" 2>/dev/null || move_failed=1

	if [ "${move_failed}" = 1 ]; then
		mv -f conty_updated.sh "${OLD_PWD}" 2>/dev/null || \
		mv -f conty_updated.sh "${HOME}" 2>/dev/null
	fi

	chmod -R 700 sqfs 2>/dev/null
	rm -rf "${update_temp_dir}"

	clear
	echo "Conty has been updated!"

	if [ "${move_failed}" = 1 ]; then
		echo
		echo "Replacing ${script} with the new one failed!"
		echo
		echo "You can find conty_updated.sh in the current working"
		echo "directory or in your HOME."
	fi

	exit
fi

run_bwrap () {
	unset sandbox_params
	unset unshare_net
	unset custom_home
	unset non_standard_home
	unset xsockets

	if [ -n "${WAYLAND_DISPLAY}" ]; then
		wayland_socket="${WAYLAND_DISPLAY}"
	else
		wayland_socket="wayland-0"
	fi

	if [ -z "${XDG_RUNTIME_DIR}" ]; then
		XDG_RUNTIME_DIR="/run/user/${EUID}"
	fi

	# Handle non-standard HOME locations that are outside of our default
	# visibility scope
	if [ -n "${HOME}" ] && [ "$(echo "${HOME}" | head -c 6)" != "/home/" ]; then
		HOME_BASE_DIR="$(echo "${HOME}" | cut -d '/' -f2)"

		case "${HOME_BASE_DIR}" in
			tmp|mnt|opt|media|run|var)
				;;
			*)
				NEW_HOME=/home/"${USER}"
				non_standard_home+=(--tmpfs /home \
									--bind "${HOME}" "${NEW_HOME}" \
									--setenv "HOME" "${NEW_HOME}")
				;;
		esac
	fi

	if [ "${SANDBOX}" = 1 ]; then
		sandbox_params+=(--tmpfs /home \
						 --tmpfs /opt \
						 --tmpfs /mnt \
						 --tmpfs /media \
						 --tmpfs /var \
						 --tmpfs /run \
						 --symlink /run /var/run \
						 --tmpfs /tmp \
						 --new-session)

		if [ -n "${non_standard_home[*]}" ]; then
			sandbox_params+=(--dir "${NEW_HOME}")
		else
			sandbox_params+=(--dir "${HOME}")
		fi

		if [ -n "${SANDBOX_LEVEL}" ] && [ "${SANDBOX_LEVEL}" -ge 2 ]; then
			sandbox_level_msg="(level 2)"
			sandbox_params+=(--dir "${XDG_RUNTIME_DIR}" \
                             --ro-bind-try "${XDG_RUNTIME_DIR}"/"${wayland_socket}" "${XDG_RUNTIME_DIR}"/"${wayland_socket}" \
                             --ro-bind-try "${XDG_RUNTIME_DIR}"/pulse "${XDG_RUNTIME_DIR}"/pulse \
                             --ro-bind-try "${XDG_RUNTIME_DIR}"/pipewire-0 "${XDG_RUNTIME_DIR}"/pipewire-0 \
                             --unshare-pid \
                             --unshare-user-try \
                             --unsetenv "DBUS_SESSION_BUS_ADDRESS")
		else
			sandbox_level_msg="(level 1)"
			sandbox_params+=(--bind-try "${XDG_RUNTIME_DIR}" "${XDG_RUNTIME_DIR}" \
							 --bind-try /run/dbus /run/dbus)
		fi

		if [ -n "${SANDBOX_LEVEL}" ] && [ "${SANDBOX_LEVEL}" -ge 3 ]; then
			sandbox_level_msg="(level 3)"
			DISABLE_NET=1
		fi

		show_msg "Sandbox is enabled ${sandbox_level_msg}"
	fi

	if [ "${DISABLE_NET}" = 1 ]; then
		show_msg "Network is disabled"

		unshare_net=(--unshare-net)
	fi

	if [ -n "${HOME_DIR}" ]; then
		show_msg "Home directory is set to ${HOME_DIR}"

		if [ -n "${non_standard_home[*]}" ]; then
			custom_home+=(--bind "${HOME_DIR}" "${NEW_HOME}")
		else
			custom_home+=(--bind "${HOME_DIR}" "${HOME}")
		fi

		[ ! -d "${HOME_DIR}" ] && mkdir -p "${HOME_DIR}"
	fi

	# Set the XAUTHORITY variable if it's missing
	if [ -z "${XAUTHORITY}" ]; then
		XAUTHORITY="${HOME}"/.Xauthority
	fi

	# Mount X server sockets and XAUTHORITY
	xsockets+=(--tmpfs /tmp/.X11-unix)

	if [ -n "${non_standard_home[*]}" ] && [ "${XAUTHORITY}" = "${HOME}"/.Xauthority ]; then
		xsockets+=(--ro-bind-try "${XAUTHORITY}" "${NEW_HOME}"/.Xauthority \
		           --setenv "XAUTHORITY" "${NEW_HOME}"/.Xauthority)
	else
		xsockets+=(--ro-bind-try "${XAUTHORITY}" "${XAUTHORITY}")
	fi

	if [ "${DISABLE_X11}" != 1 ]; then
		if [ "$(ls /tmp/.X11-unix 2>/dev/null)" ]; then
			if [ -n "${SANDBOX_LEVEL}" ] && [ "${SANDBOX_LEVEL}" -ge 3 ]; then
				xsockets+=(--ro-bind-try /tmp/.X11-unix/X"${xephyr_display}" /tmp/.X11-unix/X"${xephyr_display}" \
						   --setenv "DISPLAY" :"${xephyr_display}")
			else
				for s in /tmp/.X11-unix/*; do
					xsockets+=(--bind-try "${s}" "${s}")
				done
			fi
		fi
	else
		show_msg "Access to X server is disabled"

		# Unset the DISPLAY and XAUTHORITY env variables and mount an
		# empty file to XAUTHORITY to invalidate it
		xsockets+=(--ro-bind-try "${working_dir}"/running_"${script_id}" "${XAUTHORITY}" \
				   --unsetenv "DISPLAY" \
                   --unsetenv "XAUTHORITY")
	fi

	show_msg

	launch_wrapper "${bwrap}" \
			--ro-bind "${mount_point}" / \
			--dev-bind /dev /dev \
			--ro-bind /sys /sys \
			--bind-try /tmp /tmp \
			--proc /proc \
			--bind-try /home /home \
			--bind-try /mnt /mnt \
			--bind-try /opt /opt \
			--bind-try /media /media \
			--bind-try /run /run \
			--bind-try /var /var \
			--ro-bind-try /usr/share/steam/compatibilitytools.d /usr/share/steam/compatibilitytools.d \
			--ro-bind-try /etc/resolv.conf /etc/resolv.conf \
			--ro-bind-try /etc/hosts /etc/hosts \
			--ro-bind-try /etc/nsswitch.conf /etc/nsswitch.conf \
			--ro-bind-try /etc/passwd /etc/passwd \
			--ro-bind-try /etc/group /etc/group \
			--ro-bind-try /etc/machine-id /etc/machine-id \
			--ro-bind-try /etc/asound.conf /etc/asound.conf \
			--ro-bind-try /etc/localtime /etc/localtime \
			"${non_standard_home[@]}" \
			"${sandbox_params[@]}" \
			"${custom_home[@]}" \
			"${xsockets[@]}" \
			"${unshare_net[@]}" \
			--setenv PATH "${CUSTOM_PATH}" \
			"$@"
}

trap_exit () {
	rm -f "${working_dir}"/running_"${script_id}"

	if [ ! "$(ls "${working_dir}"/running_* 2>/dev/null)" ]; then
		fusermount"${fuse_version}" -uz "${mount_point}" 2>/dev/null || \
		umount --lazy "${mount_point}" 2>/dev/null

		if [ ! "$(ls "${mount_point}" 2>/dev/null)" ]; then
			rm -rf "${working_dir}"
		fi
	fi

	exit
}

trap 'trap_exit' EXIT

if [ "$(ls "${working_dir}"/running_* 2>/dev/null)" ] && [ ! "$(ls "${mount_point}" 2>/dev/null)" ]; then
	rm -f "${working_dir}"/running_*
fi

# Mount the image
mkdir -p "${mount_point}"

if [ "$(ls "${mount_point}" 2>/dev/null)" ] || \
	( [ "${dwarfs_image}" != 1 ] && launch_wrapper "${mount_tool}" -o offset="${offset}",ro "${script}" "${mount_point}" ) || \
	launch_wrapper "${mount_tool}" "${script}" "${mount_point}" -o offset="${offset}" -o debuglevel=error -o workers="${dwarfs_num_workers}" \
	-o mlock=try -o no_cache_image -o cache_files -o cachesize="${dwarfs_cache_size}"; then

	if [ "$1" = "-m" ] && [ -z "${script_is_symlink}" ]; then
		if [ ! -f "${working_dir}"/running_mount ]; then
			echo 1 > "${working_dir}"/running_mount
			echo "The image has been mounted to ${mount_point}"
		else
			rm -f "${working_dir}"/running_mount
			echo "The image has been unmounted"
		fi

		exit
	fi

	if [ "$1" = "-V" ] && [ -z "${script_is_symlink}" ]; then
		if [ -f "${mount_point}"/version ]; then
			cat "${mount_point}"/version
		else
			echo "Unknown version"
		fi

		exit
	fi

	echo 1 > "${working_dir}"/running_"${script_id}"

	show_msg "Running Conty"

	export CUSTOM_PATH="/bin:/sbin:/usr/bin:/usr/sbin:/usr/lib/jvm/default/bin:/usr/local/bin:/usr/local/sbin:${PATH}"

	if [ "$1" = "-l" ] && [ -z "${script_is_symlink}" ]; then
		run_bwrap --ro-bind "${mount_point}"/var /var pacman -Q
		exit
	fi

	# If SANDBOX_LEVEL is 3, run Xephyr and openbox before running applications
	if [ "${SANDBOX}" = 1 ] && [ -n "${SANDBOX_LEVEL}" ] && [ "${SANDBOX_LEVEL}" -ge 3 ]; then
		if [ -f "${mount_point}"/usr/bin/Xephyr ]; then
			if [ -z "${XEPHYR_SIZE}" ]; then
				XEPHYR_SIZE="800x600"
			fi

			xephyr_display="$((script_id+2))"

			if [ -S /tmp/.X11-unix/X"${xephyr_display}" ]; then
				xephyr_display="$((script_id+10))"
			fi

			QUIET_MODE=1 DISABLE_NET=1 SANDBOX_LEVEL=2 run_bwrap \
			--bind-try /tmp/.X11-unix /tmp/.X11-unix \
			Xephyr -noreset -ac -br -screen "${XEPHYR_SIZE}" :"${xephyr_display}" &>/dev/null & sleep 1
			xephyr_pid=$!

			QUIET_MODE=1 run_bwrap openbox & sleep 1
		else
			echo "SANDBOX_LEVEL is set to 3, but Xephyr is not present inside the container."
			echo "Xephyr is required for this SANDBOX_LEVEL."

			exit 1
		fi
	fi

	if [ -n "${script_is_symlink}" ] && [ -f "${mount_point}"/usr/bin/"${script_name}" ]; then
		export CUSTOM_PATH="/bin:/sbin:/usr/bin:/usr/sbin:/usr/lib/jvm/default/bin"

		show_msg "Autostarting ${script_name}"
		run_bwrap "${script_name}" "$@"
	else
		run_bwrap "$@"
	fi

	if [ -n "${xephyr_pid}" ]; then
		wait "${xephyr_pid}"
	fi
else
	echo "Mounting the image failed!"

	exit 1
fi

exit