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83 lines
1.8 KiB
83 lines
1.8 KiB
3 years ago
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#!/bin/bash
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set -e
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set -u
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set -f
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set -o pipefail
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echo_err(){
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echo "$@" 1>&2
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}
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#readonly dir="${XDG_CONFIG_HOME:-$HOME/.config}"
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readonly dir="/etc"
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mkdir -p "$dir"
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readonly config="$dir/doskastrc"
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_zenity(){
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zenity --width=250 --title="Doskast" "$@"
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}
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# $1: path
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_create_config(){
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if ! echo 'board=' > "$1"; then
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_zenity --error --text="Ошибка при создании пустого конфига"
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return 1
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fi
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}
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# $1: IP
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_write_systemd_config(){
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mkdir -p /etc/systemd/system/doskast-student.service.d
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cat > /etc/systemd/system/doskast-student.service.d/doskast-student-firewall.conf << EOF
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[Service]
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IPAddressDeny=any
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# IP-адрес доски
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IPAddressAllow=$1
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EOF
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}
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corrupted=0
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board=""
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if ! test -f "$config"; then
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echo_err "No config $config, creating it"
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_create_config "$config"
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else
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if ! . "$config"; then
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corrupted=1
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fi
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if test -z "${board:-}"; then
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corrupted=1
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fi
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if [ "$corrupted" = 1 ]; then
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echo_err "Config file $config is corrupted, recreating it..."
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_create_config "$config"
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fi
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fi
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# TODO: validate IP
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if ! answer="$(zenity \
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--entry \
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--title="Doskast" \
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--text="Введите IP-адрес доски:" \
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--entry-text "$board"
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)"; then
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_zenity --error --text="Произошла неизвестная ошибка."
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exit 1
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fi
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if test -z "$answer" ; then
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zenity --title="Doskast" --error --text="Введено пустое знаничение. Попробуйте заново."
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exit 1
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fi
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if ! _write_systemd_config "$answer"; then
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_zenity --error --text="Ошибка при сохранении настроек eBPF-фаерволирования."
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exit 1
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fi
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if echo board="$answer" > "$config"; then
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# жаба, чтобы был нулевой код возврата при нажатии "Отмена"
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_zenity --info --text="Настройки сохранены" || :
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fi
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