forked from freifunk-franken/firmware
118 lines
2.1 KiB
Bash
Executable File
118 lines
2.1 KiB
Bash
Executable File
#!/bin/sh
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# SPDX-License-Identifier: GPL-3.0-or-later
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# IMPORTANT!!
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# DO NOT RUN THIS IN CRONJOB!
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execute_subshell() {
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if [ $# -ne 1 ]; then
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echo "Usage:" "$0" "<function>"
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fi
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for script in /etc/layer3.d/*; do
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(
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# unset function to prevent executing parents shell function
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unset -f "$1"
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. "$script"
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if type "$1" | grep -q "function" ; then
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"$1"
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fi
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)
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if [ $? -ne 0 ]; then
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echo
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echo "Error when executing" "$1" "from" "$(basename "$script")"
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exit 1
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fi
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done
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}
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configure() {
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echo "This script might remove existing vlans, interfaces, addresses, etc."
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read -r -p "Do you really want to continue? (y/n) " response
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if ! ( [ "$response" == "y" ] || [ "$response" == "Y" ] ); then
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exit 1
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fi
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echo
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execute_subshell configure
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exit 0
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}
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reload_services() {
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execute_subshell reload
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reload_config
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}
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apply_changes() {
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execute_subshell apply
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reload_services
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exit 0
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}
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revert_changes() {
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execute_subshell revert
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exit 0
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}
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keep_changes() {
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if [ -f "/tmp/configure-layer3-pid" ]; then
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echo "Keep changes"
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kill -9 $(cat /tmp/configure-layer3-pid)
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rm /tmp/configure-layer3-pid
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# We need exit because trap in test_changes() will not stop
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# the script here and revert settings otherwise
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exit
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else
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echo "configure-layer3 -t is not running"
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fi
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}
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test_changes() {
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echo $$ > /tmp/configure-layer3-pid
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trap keep_changes SIGINT SIGTERM
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reload_services
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sleep 5
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echo "Configuration reloaded. Changes will be reverted in 200s."
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echo "Kill this script or use configure-layer3 -k to keep changes."
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sleep 200
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echo "Reverting changes.."
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# on revert we must delete the pid-file
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rm /tmp/configure-layer3-pid
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revert_changes
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reload_services
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}
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usage() {
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echo "Usage: $0 [OPTION]"
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echo
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echo "Options:"
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echo " -c: configure. No commit, no restart!"
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echo " -t: test changes. Restarts services, waits up to 200s for SIGINT"
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echo " -k: keep changes from test mode"
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echo " -a: apply changes"
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echo " -r: revert changes"
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}
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if [ $# != 1 ]; then
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usage; exit 1
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fi
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case "$1" in
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-c) configure ;;
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-t) test_changes ;;
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-k) keep_changes ;;
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-a) apply_changes ;;
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-r) revert_changes ;;
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*) usage; exit 1 ;;
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esac
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