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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 $ALLOW_ROOT ]; then
fi fi
# Full path to the script # Full path to the script
script="$(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 # Working directory where squashfs image will be mounted
# Default path: /tmp/scriptname_username_randomnumber # Default path: /tmp/scriptname_username_randomnumber
working_dir=/tmp/"$(basename "$0")"_"$(id -un)"_$RANDOM working_dir=/tmp/"$(basename "${script}")"_"$(id -un)"_$RANDOM
# It's important to set correct sizes below, otherwise there will be # It's important to set correct sizes below, otherwise there will be
# a problem with mounting the squashfs image due to an incorrectly calculated offset. # a problem with mounting the squashfs image due to an incorrectly calculated offset.
# The size of this script # The size of this script
scriptsize=4109 scriptsize=5369
# The size of the utils.tar archive # The size of the utils.tar archive
# utils.tar contains bwrap and squashfuse binaries # utils.tar contains bwrap and squashfuse binaries
@ -33,17 +35,24 @@ utilssize=1259520
# Offset where the squashfs image is stored # Offset where the squashfs image is stored
offset=$((scriptsize+utilssize)) offset=$((scriptsize+utilssize))
if [ "$1" = "--help" ] || [ "$1" = "-h" ] || [ -z "$1" ]; then
echo "Usage: ./conty.sh command command_arguments" if [ "$1" = "--help" ] || [ "$1" = "-h" ] || ([ -z "$1" ] && [ -z "${AUTOSTART}" ] && [ ! -L "${script_literal}" ]); then
echo echo "Usage: ./conty.sh command command_arguments"
echo
echo "Arguments:" echo "Arguments:"
echo echo
echo -e "-e \tExtract app files" echo -e "-e \tExtract squashfs image"
echo -e "-o \tShow squashfs offset" echo -e "-o \tShow squashfs image offset"
echo echo
echo "Environment variables:" echo "Environment variables:"
echo 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 "DISABLE_NET \tDisables network access"
echo -e "SANDBOX \tEnables filesystem sandbox" echo -e "SANDBOX \tEnables filesystem sandbox"
echo -e "BIND \t\tBinds directories and files (separated by space) from host" 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 "If you enable SANDBOX but don't set BIND, then"
echo "no directories will be available at all. And a fake temporary HOME" echo "no directories will be available at all. And a fake temporary HOME"
echo "directory will be created inside the container." 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 exit
elif [ "$1" = "-e" ]; then elif [ "$1" = "-e" ]; then
if command -v unsquashfs 1>/dev/null; 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 else
echo "To extract the image install squashfs-tools." echo "To extract the image install squashfs-tools."
fi fi
@ -144,7 +159,20 @@ mkdir -p "${working_dir}"/mnt
"${sfuse}" -o offset="${offset}" "${script}" "${working_dir}"/mnt "${sfuse}" -o offset="${offset}" "${script}" "${working_dir}"/mnt
if [ $? = 0 ]; then if [ $? = 0 ]; then
echo "Running Conty" echo "Running Conty"
run_bwrap "$@"
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 "${fmount}" -uz "${working_dir}"/mnt 2>/dev/null || umount --lazy "${working_dir}"/mnt 2>/dev/null
else else