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Add ability to automatically start applications

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Fixes #2
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Kron4ek 2021-03-28 16:35:24 +05:00 committed by GitHub
parent 09a12ac220
commit c5675940e8
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 38 additions and 10 deletions
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48
squashfs-start.sh
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@ -14,17 +14,19 @@ if [ -z $ALLOW_ROOT ]; then
fi
# Full path to the script
script="$(readlink -f "${BASH_SOURCE[0]}")"
script_literal="${BASH_SOURCE[0]}"
script_name="$(basename "${script_literal}")"
script="$(readlink -f "${script_literal}")"
# Working directory where squashfs image will be mounted
# Default path: /tmp/scriptname_username_randomnumber
working_dir=/tmp/"$(basename "$0")"_"$(id -un)"_$RANDOM
working_dir=/tmp/"$(basename "${script}")"_"$(id -un)"_$RANDOM
# It's important to set correct sizes below, otherwise there will be
# a problem with mounting the squashfs image due to an incorrectly calculated offset.
# The size of this script
scriptsize=4109
scriptsize=5369
# The size of the utils.tar archive
# utils.tar contains bwrap and squashfuse binaries
@ -33,17 +35,24 @@ utilssize=1259520
# Offset where the squashfs image is stored
offset=$((scriptsize+utilssize))
if [ "$1" = "--help" ] || [ "$1" = "-h" ] || [ -z "$1" ]; then
echo "Usage: ./conty.sh command command_arguments"
echo
if [ "$1" = "--help" ] || [ "$1" = "-h" ] || ([ -z "$1" ] && [ -z "${AUTOSTART}" ] && [ ! -L "${script_literal}" ]); then
echo "Usage: ./conty.sh command command_arguments"
echo
echo "Arguments:"
echo
echo -e "-e \tExtract app files"
echo -e "-o \tShow squashfs offset"
echo -e "-e \tExtract squashfs image"
echo -e "-o \tShow squashfs image offset"
echo
echo "Environment variables:"
echo
echo -e "AUTOSTART \tAutostarts an application specified in this variable"
echo -e "\t\tFor example, AUTOSTART=\"steam\" or AUTOSTART=\"/home/username/"
echo -e "\t\tprogram\""
echo -e "AUTOARGS \tAutomatically appends arguments from this variable to a"
echo -e "\t\tlaunched application. For example, AUTOARGS=\"--version\""
echo -e "\t\tCan be used together with AUTOSTART, but also without it."
echo -e "DISABLE_NET \tDisables network access"
echo -e "SANDBOX \tEnables filesystem sandbox"
echo -e "BIND \t\tBinds directories and files (separated by space) from host"
@ -53,11 +62,17 @@ if [ "$1" = "--help" ] || [ "$1" = "-h" ] || [ -z "$1" ]; then
echo "If you enable SANDBOX but don't set BIND, then"
echo "no directories will be available at all. And a fake temporary HOME"
echo "directory will be created inside the container."
echo
echo "Also, if the script is a symlink to itself but with different name,"
echo "then the symlinked script will automatically run a program according it's name."
echo "For instance, if the script is a symlink with the name \"wine\", then it will"
echo "automatically run wine during launch. This is an alternative"
echo "to AUTOSTART variable, but the variable has higher priority."
exit
elif [ "$1" = "-e" ]; then
if command -v unsquashfs 1>/dev/null; then
unsquashfs -o $offset -d "$(basename "$0")"_files "${script}"
unsquashfs -o $offset -d "$(basename "${script}")"_files "${script}"
else
echo "To extract the image install squashfs-tools."
fi
@ -144,7 +159,20 @@ mkdir -p "${working_dir}"/mnt
"${sfuse}" -o offset="${offset}" "${script}" "${working_dir}"/mnt
if [ $? = 0 ]; then
echo "Running Conty"
run_bwrap "$@"
if [ -n "${AUTOSTART}" ]; then
autostart="${AUTOSTART}"
elif [ -L "${script_literal}" ]; then
if [ -f "${working_dir}"/mnt/usr/bin/"${script_name}" ]; then
autostart="${script_name}"
fi
fi
if [ -n "${autostart}" ]; then
run_bwrap "${autostart}" "$@" ${AUTOARGS}
else
run_bwrap "$@" ${AUTOARGS}
fi
"${fmount}" -uz "${working_dir}"/mnt 2>/dev/null || umount --lazy "${working_dir}"/mnt 2>/dev/null
else