docker-minecraft-server/files/autopause/autopause-fcns.sh
Michael Kirsch 2fb01b4adf
Autopause update: allow network interface selection (#711)
* Cherry-pick: Fixing AUTOPAUSE on Raspberry Pi 4s (#708)

* implement autopause interface selection

* concentrate ps calls in function file

* wording and add note about PAPER's etc watchdogs
2021-01-02 11:27:03 -06:00

42 lines
1.1 KiB
Bash

#!/bin/bash
current_uptime() {
echo $(awk '{print $1}' /proc/uptime | cut -d . -f 1)
}
java_running() {
[[ $( ps -a -o stat,comm | grep 'java' | awk '{ print $1 }') =~ ^S.*$ ]]
}
java_process_exists() {
[[ -n "$(ps -a -o comm | grep 'java')" ]]
}
rcon_client_exists() {
[[ -n "$(ps -a -o comm | grep 'rcon-cli')" ]]
}
mc_server_listening() {
[[ -n $(netstat -tln | grep -e "0.0.0.0:$SERVER_PORT" -e ":::$SERVER_PORT" | grep LISTEN) ]]
}
java_clients_connected() {
local connections
connections=$(netstat -tn | grep ":$SERVER_PORT" | grep ESTABLISHED)
if [[ -z "$connections" ]] ; then
return 1
fi
IFS=$'\n'
connections=($connections)
unset IFS
# check that at least one external address is not localhost
# remember, that the host network mode does not work with autopause because of the knockd utility
for (( i=0; i<${#connections[@]}; i++ ))
do
if [[ ! $(echo "${connections[$i]}" | awk '{print $5}') =~ ^localhost$|^127(?:\.[0-9]+){0,2}\.[0-9]+$|^(?:0*\:)*?:?0*1$ ]] ; then
# not localhost
return 0
fi
done
return 1
}