267 lines
11 KiB
Bash
Executable File
267 lines
11 KiB
Bash
Executable File
#!/bin/sh
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#
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# Start a headless game server (and keep it running)
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#
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# Using this script, a headless game server is started, waiting for players to
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# connect (if your firewall configuration permits). Players connect and start a
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# game. As soon as the game ends, the server will quit, and this script will
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# start up a new server immidiately. This is a stability measure to rule out
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# the unlikely case where side effects (such as memory leaks or corruption)
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# could drain on system resources.
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#
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# For this to work, Internet originated traffic must be able to reach the
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# server on the following ports:
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# TCP port 61357: game protocol port
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# TCP port 61358: FTP control port
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# TCP ports 61359 to 61366: FTP data ports
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#
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# Once publishing to the master server succeeded (this can be verified at
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# master server's site) you may connect to your headless game server
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# using a copy of game you have installed on a Desktop computer. The first
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# user connecting to a headless server controls it. If this user disconnects,
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# the next user who connects (or had already connected) takes control.
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#
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# Please read http://wiki.megaglest.org/Dedicated_Server for more information
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#
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# ----------------------------------------------------------------------------
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# 2013 Written by Tom Reynolds <tomreyn[at]megaglest.org>
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# 2015 Rewritten by filux <heross(@@)o2.pl>
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# Copyright (c) 2013-2015 under GNU GPL v3.0+
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# ----------------------------------------------------------------------------
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LANG=C
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trap "kill -- -$$" HUP INT QUIT TERM EXIT
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KERNEL="$(uname -s | tr '[A-Z]' '[a-z]')"
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if [ "$KERNEL" = "linux" ] || [ "$(echo "$(readlink -f "$0" >/dev/null 2>&1; echo $?)" | grep '^[0-9]$')" -eq "0" ]; then
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GAMEDIR="$(dirname "$(readlink -f "$0")")"
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else
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GAMEDIR="$(cd "$(dirname "$0")"; pwd)"
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fi
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HOME_DIR="$HOME"
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B_SCRIPT_DIR="$GAME_DIR"
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# -------
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# useful for mods
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BASIC_SCRIPT="start_megaglest"
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FAKE_EXC_BINARY_MAC="MegaGlest"
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EXC_BINARY="megaglest"
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SHORT_GAME_NAME="megaglest"
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# -------
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PORTSTART=62001
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NUM_OA_SERVERS=2
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# Log file location (beware, this can grow large)
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# LOG_SERVER=/dev/null
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if [ "$(which curl 2>/dev/null)" = "" ]; then
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echo "WARNING: Downloading tool 'curl' DOES NOT EXIST on this system, please install it." >&2
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fi
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if [ "$KERNEL" = "darwin" ]; then
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if [ -e "$GAMEDIR/../../MacOS/$FAKE_EXC_BINARY_MAC" ]; then
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BASIC_SCRIPT="$FAKE_EXC_BINARY_MAC"; B_SCRIPT_DIR="$(cd "${GAMEDIR}/../../MacOS/"; pwd)"
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elif [ -e "$GAMEDIR/$FAKE_EXC_BINARY_MAC.sh" ]; then
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BASIC_SCRIPT="$FAKE_EXC_BINARY_MAC.sh"
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fi
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fi
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if [ "$(which lscpu 2>/dev/null)" != "" ]; then NUMCORES="$(lscpu -p | grep -cv '^#')"
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elif [ "$(which sysctl 2>/dev/null)" != "" ]; then NUMCORES="$(sysctl -n hw.ncpu)"; fi
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if [ "$NUMCORES" = "" ]; then NUMCORES=1; fi
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echo "Notice: Detected processor with $NUMCORES cores." >&2
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case $NUMCORES in
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1) MAX_LOAD_MULT="0.65";; 2) MAX_LOAD_MULT="0.80";; 3) MAX_LOAD_MULT="0.90";; *) MAX_LOAD_MULT="0.95";;
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esac
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MAX_LOAD="$(echo "$NUMCORES $MAX_LOAD_MULT" | awk '{print $1*$2}')"
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if [ "$1" != "" ] && [ "$(echo "$1" | grep '^[0-9]\+$')" != "" ]; then SERVERCOUNT="$1"
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else SERVERCOUNT=0; fi
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if [ "$2" != "" ] && [ "$(echo "$2" | grep '[0-9.:]\+' | grep -v '[A-Za-z]')" != "" ]; then
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SERVER_GREP_IP="$(echo "$2" | sed 's/\./\\./g')"; else SERVER_GREP_IP=""; fi
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if [ "$3" != "" ] && [ "$(echo "$3" | grep '^[0-9]\+$')" != "" ]; then PORTSTART="$3"; fi
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PORT="$(($PORTSTART + $(($(($SERVERCOUNT - 1)) * 11))))"
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STATUSPORT="$(($PORT - 1))"
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PORT_FD="$(echo "$PORT" | cut -c1-3)"
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SERVER_SCRIPT="$(basename "$0")"
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if [ -f "$GAMEDIR/glest.ini" ]; then
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GLEST_INI="$(cat "$GAMEDIR/glest.ini")"
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LOG_DIR="$(echo "$GLEST_INI" | awk -F '=' '/^LogPath=/ {print $2}' | sed -e 's:\$HOME:'"$HOME_DIR"':g')"
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MASTER_SERVER="$(echo "$GLEST_INI" | awk -F '=' '/^Masterserver=/ {print $2}')"
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if [ "$(echo "$MASTER_SERVER" | grep '/$')" ]; then CLEAR_M_SERVER="${MASTER_SERVER}showServersForGlest.php"
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else CLEAR_M_SERVER="$MASTER_SERVER/showServersForGlest.php"; fi
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elif [ "$SERVER_GREP_IP" != "" ]; then
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echo "WARNING: file 'glest.ini' not found, maybe '$SERVER_SCRIPT' script is placed in the wrong location." >&2
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fi
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if [ -e "$B_SCRIPT_DIR/$BASIC_SCRIPT" ]; then SERVER_EXEC="$B_SCRIPT_DIR/$BASIC_SCRIPT"
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elif [ -e "$GAMEDIR/$EXC_BINARY" ]; then SERVER_EXEC="$GAMEDIR/$EXC_BINARY"
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else SERVER_EXEC="$EXC_BINARY"; fi
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if [ "$SERVERCOUNT" -eq "0" ]; then
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if [ "$SERVER_EXEC" != "$EXC_BINARY" ]; then ulimit -c unlimited; fi
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USED_PORTS=""; LOG_FILE="server.log"
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else
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USED_PORTS=" --use-ports=$PORT,$PORT,$STATUSPORT"
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LOG_FILE="server_${SERVERCOUNT}.log"
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echo "Info: Server nr. $SERVERCOUNT ($2 ; $PORT)." >&2
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fi
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SER_PARAMETERS="--headless-server-mode=vps,exit$USED_PORTS"
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SER_GREP_PARAMETERS="$(echo "$SER_PARAMETERS" | sed 's/--/\\--/g')"
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if [ "$SERVERCOUNT" -gt "0" ]; then
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sleep "$(($SERVERCOUNT * 30))"s
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fi
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if [ "$LOG_SERVER" != "" ]; then :
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elif [ "$LOG_DIR" != "" ]; then
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mkdir -p "$LOG_DIR"
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if [ "$(echo "$LOG_DIR" | grep '/$')" ]; then LOG_SERVER="${LOG_DIR}${LOG_FILE}"
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else LOG_SERVER="$LOG_DIR/$LOG_FILE"; fi
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else
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LOG_SERVER=/dev/null
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fi
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cd "$GAMEDIR"
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AVG_LOAD="unknown"; SER_SITUATION="unknown"; CHECK_AVG_LOAD_M=0
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if [ -e "/proc/loadavg" ]; then CHECK_AVG_LOAD_M=1
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elif [ "$(which sysctl 2>/dev/null)" != "" ]; then CHECK_AVG_LOAD_M=2; fi
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while true; do
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if [ -f "$LOG_SERVER" ]; then mv -f "$LOG_SERVER" "$LOG_SERVER.1"; fi
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if [ -e "core" ]; then mv -f "core" "core.1"; fi
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date > "$LOG_SERVER"
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while true; do
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if [ "$CHECK_AVG_LOAD_M" -eq "1" ]; then
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AVG_LOAD="$(awk '{print $2}' /proc/loadavg)"
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elif [ "$CHECK_AVG_LOAD_M" -eq "2" ]; then
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AVG_LOAD="$(sysctl -n vm.loadavg | awk -F '{' '{print $2}' | awk '{print $2}')"
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fi
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if [ "$AVG_LOAD" != "unknown" ]; then
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SER_SITUATION="$(echo "$AVG_LOAD $MAX_LOAD" | awk '{if ($1 > $2) print "highload"}')"
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fi
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if [ "$SER_SITUATION" = "highload" ]; then
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if [ "$OLD_SER_SITUATION_STATUS" = "" ]; then
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echo "WARNING: Detected high load on the server." >&2
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OLD_SER_SITUATION_STATUS="yes"
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fi
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sleep 5m; sleep "$((RANDOM % 180))"s
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else
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OLD_SER_SITUATION_STATUS=""
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if [ "$SERVERCOUNT" -ne "0" ] && [ "$SERVERCOUNT" -ne "1" ] && [ "$MASTER_SERVER" != "" ] && [ "$SERVER_GREP_IP" != "" ]; then
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NUM_O_FREE_SER="$(curl -s -L "$CLEAR_M_SERVER" | grep '^\([^|]*|\)\{4\}'"$SERVER_GREP_IP"'|.*$' \
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| grep '^\([^|]*|\)\{11\}'"$PORT_FD"'' | grep '^\([^|]*|\)\{13\}0|.*$' | wc -l)"
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else
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NUM_O_FREE_SER=""
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fi
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if [ "$NUM_O_FREE_SER" != "" ] && [ "$NUM_O_FREE_SER" -ge "$NUM_OA_SERVERS" ]; then
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if [ "$OLD_NUM_OFS_STATUS" = "" ]; then
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echo "Notice: Waiting for situation when server may be really needed." >&2
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OLD_NUM_OFS_STATUS="yes"
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fi
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sleep 2m; sleep "$((RANDOM % 60))"s
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else
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OLD_NUM_OFS_STATUS=""
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break
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fi
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fi
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done
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if [ "$SERVERCOUNT" -eq "1" ] && [ ! -e "$GAMEDIR/${SHORT_GAME_NAME}-mini-update.sh" ] && \
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[ -e "$GAMEDIR/../${SHORT_GAME_NAME}-dev_version-update.sh" ]; then
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if [ ! -f "$GAMEDIR/${SHORT_GAME_NAME}-dev_version-update-done.log" ]; then
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echo "... dev_version update:" >&2
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"$GAMEDIR/../${SHORT_GAME_NAME}-dev_version-update.sh" "$GAMEDIR"; sleep 1s
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echo "#" > "$GAMEDIR/${SHORT_GAME_NAME}-dev_version-update-done.log"; sleep 1s
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"$GAMEDIR/$SERVER_SCRIPT" $@ &
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break
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else
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rm -f "$GAMEDIR/${SHORT_GAME_NAME}-dev_version-update-done.log"
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fi
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fi
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echo 'Starting server...' | tee -a "$LOG_SERVER"
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if [ "$MASTER_SERVER" != "" ] && [ "$SERVER_GREP_IP" != "" ]; then
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( check_nr=0; force_restart=0; loop_start="yes"; BeginTime="$(date +"%s")"; sleep 4m
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while true; do
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SER_PID="$(ps -ef | grep "$SER_GREP_PARAMETERS" | awk '/\/'"$EXC_BINARY"' / {print $2}')"
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if [ "$loop_start" = "yes" ]; then SER_PID_S="$SER_PID"; loop_start="no"; fi
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CheckTime="$(date +"%s")"; DiffTime="$(($CheckTime-$BeginTime))"
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if [ "$SER_PID" != "" ] && [ "$SER_PID" = "$SER_PID_S" ]; then
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FIND_SER="$(curl -s -L "$CLEAR_M_SERVER" | grep '^\([^|]*|\)\{4\}'"$SERVER_GREP_IP"'|.*$' \
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| grep '^\([^|]*|\)\{11\}'"$PORT"'|.*$')"
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if [ "$FIND_SER" = "" ]; then
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if [ "$OLD_FIND_SER_STATUS" = "" ]; then
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echo "WARNING: The master server doesn't see this server." >&2
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OLD_FIND_SER_STATUS="yes"
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fi
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else
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OLD_FIND_SER_STATUS=""
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SER_STATUS="$(echo "$FIND_SER" | awk -F '|' '{print $14}')"
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if [ "$SER_STATUS" = "" ] || [ "$(echo "$SER_STATUS" | grep '^[0-9]\+$')" = "" ]; then
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echo "ERROR: Server status cannot be determined." >&2
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fi
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fi
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if [ "$SER_STATUS" != "2" ] && [ "$DiffTime" -gt "43200" ]; then
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echo "Notice: The server is working continuously for over 12 hours." >&2; force_restart=1
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elif [ "$SER_STATUS" = "2" ]; then
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if [ "$OLD_PROG_STATUS" = "" ]; then
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echo "Status: Game in progress..." >&2
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OLD_PROG_STATUS="yes"; BeginTime2="$(date +"%s")"
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fi
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DiffTime2="$(($CheckTime-$BeginTime2))"
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if [ "$DiffTime2" -gt "14400" ]; then
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echo "WARNING: The game is in progress for over 4 hours." >&2; force_restart=1
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else
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sleep 8m
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fi
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elif [ "$SER_STATUS" = "1" ]; then
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if [ "$OLD_READY_STATUS" = "" ]; then
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OLD_READY_STATUS="yes"; BeginTime3="$(date +"%s")"
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fi
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DiffTime3="$(($CheckTime-$BeginTime3))"
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if [ "$DiffTime3" -gt "3600" ]; then
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echo "WARNING: The game seems to waiting for start for over an hour." >&2; force_restart=1
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fi
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else
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OLD_READY_STATUS=""
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fi
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if [ "$force_restart" -eq "1" ]; then
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FIND_SER=""; if [ "$check_nr" -lt "120" ]; then check_nr=120; fi
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if [ "$LOG_DIR" != "" ]; then echo "#" > "$LOG_DIR/${SHORT_GAME_NAME}-server-forced-restart.log"; sleep 2s; fi
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fi
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if [ "$FIND_SER" = "" ]; then
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check_nr="$(($check_nr + 1))"
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if [ "$check_nr" -lt "119" ]; then :
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elif [ "$check_nr" -eq "119" ] && [ "$force_restart" -ne "1" ]; then
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echo "ERROR: The master server doesn't see this server for over 4 hours." >&2
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elif [ "$check_nr" -ge "123" ]; then kill -9 "$SER_PID"
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else kill "$SER_PID"; fi
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else
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check_nr=0
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fi
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sleep 2m
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else
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break
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fi
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done
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) &
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fi
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"$SERVER_EXEC" $SER_PARAMETERS >> "$LOG_SERVER" 2>&1
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if [ "$?" -ne "0" ]; then
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if [ ! -f "$LOG_DIR/${SHORT_GAME_NAME}-server-forced-restart.log" ]; then
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echo 'ERROR: Server has quit unexpectedly.' >> "$LOG_SERVER"
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echo 'ERROR: Server has quit unexpectedly.' >&2
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if [ "$SERVERCOUNT" -eq "0" ]; then
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echo ' Please inspect '"$LOG_SERVER"'.' >&2
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exit 1
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fi
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sleep 5s
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if [ "$SERVERCOUNT" -eq "1" ] && [ "$SERVER_GREP_IP" != "" ] && [ -e "$GAMEDIR/${SHORT_GAME_NAME}-mini-update.sh" ]; then
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echo "... attempt to perform mini update, which may solve tiny problems:" >&2
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"$GAMEDIR/${SHORT_GAME_NAME}-mini-update.sh"; sleep 1s
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fi
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else
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echo 'Notice: Server was restarted by script.' >> "$LOG_SERVER"
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rm -f "$LOG_DIR/${SHORT_GAME_NAME}-server-forced-restart.log"
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fi
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sleep "$((RANDOM % 30))"s
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else
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echo 'Server has quit.' | tee -a "$LOG_SERVER"
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fi
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done
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