#!/bin/bash
# Hidden: Source
# Server Management Script
# Author: Daniel Gibbs
# Website: http://danielgibbs.co.uk
# Version: 070913

#### Variables ####

# Notification Email
# (on|off)
emailnotification="off"
email="email@example.com"

# Start vars
defaultmap="hdn_docks"
port="27015"
sourcetvport="27020"
clientport="27005"

parms="-game hidden +map ${defaultmap} -port ${port} +tv_port ${sourcetvport} +clientport ${clientport}"

#### Advanced Variables ####

# Steam
appid="4020"

# Directorys
rootdir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
selfname="$0"
filesdir="${rootdir}/serverfiles"
servercfg="${filesdir}/hidden/cfg/server.cfg"

# Server Details
servicename="hs-server"
gamename="Hidden: Source"
engine="source"

servername=`grep -s hostname ${servercfg} | sed 's/hostname //g'|sed 's/"//g'`
rcon=`grep -s rcon_password ${servercfg} | sed 's/rcon_password //g'|sed 's/"//g'`

# Logging
logdir="${rootdir}/log/script"
gamelogdir="${filesdir}/hidden/logs"
logfile="${logdir}/${servicename}.log"
logfiledate="${logdir}/${servicename}-$( date '+%d-%m-%Y-%H-%M-%S').log"
logdays="7"

##### Script #####
# Do not edit
# unless you know
# what you are doing

fn_rootcheck(){
if [ `whoami` = "root" ];then
	echo -e "[\e[0;31m FAIL \e[0;39m] Script will not run as root!"
	exit
fi
}

fn_syscheck(){
if [ ! -e ${filesdir} ];then
	echo -e "[\e[0;31m FAIL \e[0;39m] Cannot access ${filesdir}: No such directory"
	exit
fi
}

fn_serverquery(){
# uses serverquery.py to directly query the server
# detects if the server locks up
if [ -f serverquery.py ];then
	echo -e "[\e[0;36m INFO \e[0;39m] serverquery.py detected"
	echo -e "$( date '+%b %d %H:%M:%S') ${servicename}: serverquery.py detected" >> ${logfile}
	echo -e "[\e[0;32m  OK  \e[0;39m] Querying ${servicename}: ${servername}: QUERYING"
	echo -e "$( date '+%b %d %H:%M:%S') ${servicename}: Querying ${servername}: QUERYING" >> ${logfile}
	serverquery=`./serverquery.py 127.0.0.1 ${port} 2>&1`
	sleep 1
	if [ "${serverquery}" = "ERROR 1" ]||[ "${serverquery}" = "ERROR 2" ]||[ "${serverquery}" = "ERROR 3" ];then
		echo -e "[\e[0;31m FAIL \e[0;39m] Querying ${servicename}: ${servername}: ${serverquery}"
		echo -e "$( date '+%b %d %H:%M:%S') ${servicename}: Querying ${servername}: ${serverquery}" >> ${logfile}
		sleep 1
		echo -e "[\e[1;33m WARN \e[0;39m] ${servicename}: Monitor detected ${servername} has locked up!"
		echo -e "$( date '+%b %d %H:%M:%S') ${servicename}: Monitor detected ${servername} has locked up!" >> ${logfile}
		sleep 1
		fn_restartserver
	else
		echo -e "[\e[0;32m  OK  \e[0;39m] Querying ${servicename}: ${servername}: ${serverquery}"
		echo -e "$( date '+%b %d %H:%M:%S') ${servicename}: Querying ${servername}: ${serverquery}" >> ${logfile}
		sleep 1
	fi
fi
}

fn_runcheck(){
# already running check
pidwc=`screen -ls |grep ${servicename} |awk -F . '{print $1}'|awk '{print $1}'|wc -l`
if [ ${pidwc} -eq 1 ];then
	fn_serverquery
	echo -e "[\e[0;36m INFO \e[0;39m] ${servicename}: ${servername} is already running"
	echo -e "$( date '+%b %d %H:%M:%S') ${servicename}: ${servername} is already running" >> ${logfile}
	exit
# multiple of same instance check
elif [ ${pidwc} -ge 2 ];then
	echo -e "[\e[0;31m FAIL \e[0;39m] ${servicename}: ${servername} is running ${pidwc} times"
	echo -e "$( date '+%b %d %H:%M:%S') ${servicename}: ${servername} is running ${pidwc} times" >> ${logfile}
	echo -e "[\e[0;32m  OK  \e[0;39m] ${servicename}: Stopping ${pidwc} instances of ${servername}"
	echo -e "$( date '+%b %d %H:%M:%S') ${servicename}: Stopping ${pidwc} instances of ${servername}" >> ${logfile}
	fn_stopserver
	exit
fi
}

fn_distro(){
arch=$(uname -m)
kernel=$(uname -r)
if [ -f /etc/lsb-release ]; then
	os=$(lsb_release -s -d)
elif [ -f /etc/debian_version ]; then
	os="Debian $(cat /etc/debian_version)"
elif [ -f /etc/redhat-release ]; then
	os=`cat /etc/redhat-release`
else
	os="$(uname -s) $(uname -r)"
fi
}

fn_uptime(){
uptime=$(</proc/uptime)
uptime=${uptime%%.*}
minutes=$(( uptime/60%60 ))
hours=$(( uptime/60/60%24 ))
days=$(( uptime/60/60/24 ))
}

fn_load(){
load=$(uptime | awk -F 'load average' '{ print $2 }')
}

fn_emailnotification(){
fn_distro
fn_uptime
fn_load
{
echo -e "=========================================\nServer information\n=========================================\n"
echo -e "Date: $(date)"
echo -e "Distro: ${os}"
echo -e "Arch: ${arch}"
echo -e "Kernel: ${kernel}"
echo -e "Hostname: $HOSTNAME"
echo -e "Uptime: ${days}d, ${hours}h, ${minutes}m"
echo -e "Avg Load${load}\n"
echo -e "=========================================\n${servicename} statistics\n=========================================\n"
echo -e "Service: ${servicename}"
echo -e "Server: ${servername}"
echo -e "Failure reason: ${failurereason}"
echo -e "Action Taken: ${actiontaken}\n"
echo -e "=========================================\n${servicename} log summary\n=========================================\n"
}|tee ${logdir}/${servicename}-email.log > /dev/null 2>&1
tail -50 ${logfile} >> /${logdir}/${servicename}-email.log
mail -s "${subject}" ${email} < /${logdir}/${servicename}-email.log
echo -e "[\e[0;36m INFO \e[0;39m] Sent email notification to ${email}"
echo -e "$( date '+%b %d %H:%M:%S') ${servicename}: sent email notification to ${email}" >> ${logfile}
}

fn_emailtest(){
fn_rootcheck
fn_syscheck
echo -e "[\e[0;32m  OK  \e[0;39m] Emailing test notification"
echo -e "$( date '+%b %d %H:%M:%S') ${servicename}: Emailing test notification" >> ${logfile}
if [ "${emailnotification}" = "on" ];then
	subject="${servicename} Email Test Notification - Testing ${servername}"
	failurereason="Testing ${servicename} email notification"
	actiontaken="Sent test email...hello is this thing on?"
	fn_emailnotification
else
	echo -e "[\e[0;31m FAIL \e[0;39m] Email notificaion not enabled"
	echo -e "$( date '+%b %d %H:%M:%S') ${servicename}: Email notificaion not enabled" >> ${logfile}
fi
}

fn_logmanager(){
# log manager will active if finds logs older than $logdays
if [ `find ${logdir}/* -mtime +${logdays} |wc -l` -ne "0" ];then
	echo -e "[\e[0;32m  OK  \e[0;39m] Starting log cleaner"
	echo -e "$( date '+%b %d %H:%M:%S') ${servicename}: Starting log cleaner" >> ${logfile}
	echo -e "[\e[0;36m INFO \e[0;39m] Removing logs older than ${logdays} days"
	echo -e "$( date '+%b %d %H:%M:%S') ${servicename}: Removing logs older than ${logdays} days" >> ${logfile}
	find ${logdir}/* -mtime +${logdays} |tee >> ${logfile}
	count=`find ${logdir}/* -mtime +${logdays}|wc -l`
	find ${logdir}/* -mtime +${logdays} -exec rm {} \;
	echo -e "[\e[0;36m INFO \e[0;39m] Log cleaner removed ${count} log files"
	echo -e "$( date '+%b %d %H:%M:%S') ${servicename}: Log cleaner removed ${count} log files" >> ${logfile}
fi
}

fn_restartserver(){
	echo -e "[\e[0;32m  OK  \e[0;39m] Restarting ${servicename}: ${servername}"
	echo -e "$( date '+%b %d %H:%M:%S') ${servicename}: Restarting ${servername}" >> ${logfile}
	fn_stopserver
	sleep 1
	fn_startserver
}

fn_startserver(){
fn_rootcheck
fn_syscheck
fn_runcheck
fn_logmanager
cd ${filesdir}
echo -e "[\e[0;32m  OK  \e[0;39m] Starting ${servicename}: ${servername}"
echo -e "$( date '+%b %d %H:%M:%S') ${servicename}: Starting ${servername}" >> ${logfile}
cp ${logfile} ${logfiledate}
screen -d -m -S ${servicename} ${filesdir}/srcds_run ${parms}
sleep 1
pidwc=`screen -ls |grep ${servicename} |awk -F . '{print $1}'|awk '{print $1}'|wc -l`
if [ ${pidwc} -eq 0 ];then
	echo -e "[\e[0;31m FAIL \e[0;39m] ${servicename}: Failed to start ${servername}"
	echo -e "$( date '+%b %d %H:%M:%S') ${servicename}: failed to start ${servername}" >> ${logfile}
fi
}

fn_stopserver(){
fn_rootcheck
fn_syscheck
pid=`screen -ls |grep ${servicename} |awk -F . '{print $1}'|awk '{print $1}'`
if [ -z ${pid} ];then
	echo -e "[\e[0;36m INFO \e[0;39m] ${servicename}: ${servername} is already stopped"
	echo -e "$( date '+%b %d %H:%M:%S') ${servicename}: ${servername} is already stopped" >> ${logfile}
else
	echo -e "[\e[0;32m  OK  \e[0;39m] Stopping ${servicename}: ${servername}"
	echo -e "$( date '+%b %d %H:%M:%S') ${servicename}: Stopping ${servername}" >> ${logfile}
	kill `screen -ls |grep ${servicename} |awk -F . '{print $1}'|awk '{print $1}'`
	screen -wipe > /dev/null 2>&1
fi
}

fn_debugserver(){
fn_rootcheck
fn_syscheck
cd ${filesdir}
echo -e "[\e[0;32m  OK  \e[0;39m] Starting ${servicename}: ${servername} in debug mode!"
sleep 0.5
echo -e ""
echo -e "Use for identifying server issues only!"
while true; do
	echo "If server is already running it will be stopped"
	read -p "Continue? [y/N]" yn
	case $yn in
	[Yy]* ) break;;
	[Nn]* ) echo Exiting; return 1 ;;
	* ) echo "Please answer yes or no.";;
esac
done
fn_stopserver
sleep 1
echo -e "[\e[0;36m INFO \e[0;39m] Press CTRL+C to drop out of debug mode"
sleep 3
echo -e "[\e[0;32m  OK  \e[0;39m] Starting ${servicename}: ${servername}"
${filesdir}/srcds_run ${parms} -debug
}

fn_monitorserver(){
fn_rootcheck
fn_syscheck
fn_logmanager
echo -e "[\e[0;32m  OK  \e[0;39m] Checking ${servicename}: ${servername}"
echo -e "$( date '+%b %d %H:%M:%S') ${servicename}: Checking ${servername}" >> ${logfile}
updatecheck=`ps -ef|grep "${selfname} update"|grep -v grep|wc -l`
if [ "${updatecheck}" = "0" ];then
	fn_runcheck
	echo -e "[\e[1;33m WARN \e[0;39m] ${servicename}: Monitor detected ${servername} had stopped!"
	echo -e "$( date '+%b %d %H:%M:%S') ${servicename}: Monitor detected ${servername} had stopped!" >> ${logfile}
	if [ "${emailnotification}" = "on" ];then
		subject="${servicename} Monitor - Starting ${servername}"
		failurereason="${servername} had stopped"
		actiontaken="restarted ${servername}"
		fn_emailnotification
	fi
	fn_startserver
else
	echo -e "[\e[0;36m INFO \e[0;39m] ${servicename}: Monitor detected ${servername} is currently checking for updates!"
	echo -e "$( date '+%b %d %H:%M:%S') ${servicename}: Monitor detected ${servername} is currently checking for updates!" >> ${logfile}
	echo -e "[\e[0;36m INFO \e[0;39m] ${servicename}: ${servername} will start when updating is complete"
	echo -e "$( date '+%b %d %H:%M:%S') ${servicename}: ${servername} will start when updating is complete" >> ${logfile}
fi
}

fn_updateserver-hlds(){
fn_rootcheck
fn_syscheck
echo -e "[\e[0;32m  OK  \e[0;39m] Updating ${servicename}: ${servername}"
echo -e "$( date '+%b %d %H:%M:%S') ${servicename}: Updating ${servername}" >> ${logfile}
cd ${filesdir}
./steam -command update -game episode1 -verify_all -retry -dir ${filesdir}
}

fn_details(){
echo ""
echo "${gamename} Server Details"
echo "============================"
echo ""
echo "${servername} Ports"
echo "======================="
if [ "${engine}" == "unreal2" ]||[ "${engine}" == "unreal" ];then
	gameport=$(grep Port= ${systemdir}/${ini}|grep -v Master|grep -v LAN|grep -v Proxy|grep -v Listen|sed 's/\Port=//g')
	queryport=$((${gameport} + 1))
	gsqueryport=$(grep OldQueryPortNumber= ${systemdir}/${ini}|sed 's/\OldQueryPortNumber=//g')
	udplinkport=$((${gameport} + 2))
	webadminport=$(grep ListenPort= ${systemdir}/${ini}|sed 's/\ListenPort=//g')
	if [ "${engine}" == "unreal" ];then
		webadminuser=$(grep AdminUsername= ${systemdir}/${ini}|sed 's/\AdminUsername=//g')
	else
		webadminuser=$(grep AdminName= ${systemdir}/${ini}|sed 's/\AdminName=//g')
	fi
	webadminpass=$(grep AdminPassword= ${systemdir}/${ini}|sed 's/\AdminPassword=//g')
	echo "Ports the server is currently using"
	echo ""
	echo "DIRECTION	DESCRIPTION		PORT		INI VARIABLE"
	echo "INBOUND		Game Port		${gameport} UDP	Port=${gameport}"
	echo "INBOUND		Query Port		${queryport} UDP	n/a"
	if [ "${engine}" == "unreal" ];then
		echo "OUTBOUND	UdpLink Port (random)	${udplinkport}+ UDP	n/a"
	fi
	if [ "${engine}" != "unreal" ] && [ "${appid}" != "223250" ];then
		echo "INBOUND		GameSpy Query Port	${gsqueryport} UDP	OldQueryPortNumber=${gsqueryport}"
	fi
	if [ "${appid}" == "215360" ];then
		echo "OUTBOUND	Master Server port 	28852 TCP/UDP	n/a"
	else
		echo "OUTBOUND	Master Server port	28900/28902 TCP/UDP  n/a"
	fi
	if [ "${appid}" ];then
		if [ "${appid}" == "223250" ];then
			echo "OUTBOUND	Steam Port		20610 UDP	n/a"
		else
			echo "OUTBOUND	Steam Port		20660 UDP	n/a"
		fi
	fi
	echo "INBOUND		WebAdmin 		${webadminport} TCP	ListenPort=${webadminport}"
	echo ""
	echo "${servername} WebAdmin"
	echo "======================="
	echo "WebAdmin URL: http://localhost:${webadminport}"
	echo "WebAdmin Username: ${webadminuser}"
	echo "WebAdmin Password: ${webadminpass}"
	echo ""
	echo "Config file"
	echo "${systemdir}/${ini}"
elif [ "${engine}" = "source" ]||[ "${engine}" = "goldsource" ];then
	servername=`grep -s hostname ${servercfg} | sed 's/hostname //g'|sed 's/"//g'`
	rcon=`grep -s rcon_password ${servercfg} | sed 's/rcon_password //g'|sed 's/"//g'`
	echo "Ports the server is currently using"
	echo ""
	echo "DIRECTION	DESCRIPTION		PORT"
	echo "INBOUND		Game/Rcon Port		${port}"
	if [ "${engine}" = "source" ];then
		echo "INBOUND		SourceTV Port		${sourcetvport}"
	fi
	echo "OUTBOUND	Client Port		${clientport}"
	echo ""
	echo "You can change ports by editing the"
	echo "start parameters in ${selfname}"
	echo ""
	echo "${servername} Details"
	echo "======================="
	echo "Server name: ${servername}"
	echo "Rcon Password: ${rcon}"
	echo ""
	echo "Config file:"
	echo "${servercfg}"
fi
echo ""
}

#
## Installer
#

fn_header(){
clear
echo "================================="
echo "${gamename}"
echo "Server Linux Installer"
echo "by Daniel Gibbs"
echo "http://danielgibbs.co.uk"
echo "================================="
echo ""
}

fn_hldsdl(){
echo ""
echo "Installing hldsupdatetool"
echo "================================="
cd ${filesdir}
if [ ! -f steam ];then
	wget http://danielgibbs.co.uk/wp-content/uploads/steam
	tar --verbose -zxf steamcmd_linux.tar.gz
	rm -v steamcmd_linux.tar.gz
	chmod +x steam
else
	echo "hldsupdatetool already installed!"
fi
./steam -verify_all -retry
}

fn_retryinstall(){
while true; do
	read -p "Retry install? [y/N]" yn
	case $yn in
	[Yy]* ) fn_install;;
	[Nn]* ) echo Exiting; exit ;;
	* ) echo "Please answer yes or no.";;
	esac
done
}

fn_filesdl(){
echo ""
echo "Downloading ${gamename} Server Files"
echo "============================"
cd ${rootdir}
mkdir ${filesdir}
cd ${filesdir}
if [ ! -f hsb4b-full.zip ];then
	wget http://www.hidden-source.com/downloads/hsb4b-full.zip
else
	echo "hsb4b-full.zip already downloaded!"
fi
echo "Running MD5 checksum to verify hsb4b-full.zip"
sleep 1
echo "MD5 checksum: 4aa558231d5f945f78ab55364a16dd60"
md5check=`md5sum hsb4b-full.zip| awk '{print $1;}'`
echo "File returned: ${md5check}"
if [ "${md5check}" != "4aa558231d5f945f78ab55364a16dd60" ];then
	echo "MD5 checksum: FAILED!"
	read -p "Retry download? [y/N]" yn
	case $yn in
	[Yy]* ) rm -f hsb4b-full.zip; fn_filesdl;;
	[Nn]* ) echo Exiting; exit ;;
	* ) echo "Please answer yes or no.";;
	esac
fi
echo "MD5 checksum: PASSED"
echo ""
if [ ! -f hidden-beta4b1-server.zip ];then
	wget http://www.hidden-source.com/downloads/hidden-beta4b1-server.zip
else
	echo "hidden-beta4b1-server.zip already downloaded!"
fi
echo "Running MD5 checksum to verify hidden-beta4b1-server.zip"
sleep 1
echo "MD5 checksum: 48052ea54f9638b15fe65d23f6008feb"
md5check=`md5sum hidden-beta4b1-server.zip| awk '{print $1;}'`
echo "File returned: ${md5check}"
if [ "${md5check}" != "48052ea54f9638b15fe65d23f6008feb" ];then
	echo "MD5 checksum: FAILED!"
	read -p "Retry download? [y/N]" yn
	case $yn in
	[Yy]* ) rm -f hidden-beta4b1-server.zip; fn_filesdl;;
	[Nn]* ) echo Exiting; exit ;;
	* ) echo "Please answer yes or no.";;
	esac
fi
echo "MD5 checksum: PASSED"
echo ""
}

fn_install(){
fn_rootcheck
fn_header
if [ -d ${filesdir} ];then
	echo "${gamename} Server is already installed here:"
	pwd
	echo ""
	while true; do
		read -p "Continue [y/N]" yn
		case $yn in
		[Yy]* ) break;;
		[Nn]* ) echo Exiting; return 1 ;;
		* ) echo "Please answer yes or no.";;
		esac
	done
fi
fn_header
echo "Install Directory:"
pwd
echo ""
while true; do
	read -p "Continue [y/N]" yn
	case $yn in
	[Yy]* ) break;;
	[Nn]* ) echo Exiting; return 1 ;;
	* ) echo "Please answer yes or no.";;
    esac
done
fn_header
echo ""
echo "Installing ${gamename} Server"
echo "================================="
	mkdir -v ${filesdir}
	mkdir -v ${rootdir}/log
	mkdir -v ${logdir}
	fn_hldsdl
	echo "Downloading episode 1 game assets"
	echo "================================="
	sleep 2
	./steam -command update -game episode1 -verify_all -retry -dir ${filesdir}
	fn_filesdl
	unzip hsb4b-full.zip
	unzip hidden-beta4b1-server.zip
	echo ""
	echo "================================="
	while true; do
		read -p "Was the install successful? [y/N]" yn
		case $yn in
		[Yy]* ) break;;
		[Nn]* ) fn_retryinstall ;;
		* ) echo "Please answer yes or no.";;
		esac
	done
fn_header
echo "Configuring ${gamename} Server"
echo "================================="
	read -p "Enter server name: " servername
	read -p "Enter rcon password: " rconpass
	sleep 1
	echo ""
	echo "Creating server.cfg"
	touch ${servercfg}
	{
		echo -e "// server name"
		echo -e "hostname \"${servername}\""
		echo -e ""
		echo -e "// rcon passsword"
		echo -e "rcon_password \"${rconpass}\""
		echo -e ""
		echo -e "// Server password"
		echo -e "sv_password \"\""
		echo -e ""
		echo -e "// server logging"
		echo -e "log on"
		echo -e "sv_logbans 1"
		echo -e "sv_logecho 1"
		echo -e "sv_logfile 1"
		echo -e "sv_log_onefile 0"
	}|tee ${servercfg} > /dev/null 2>&1
	sleep 1
	echo ""
	echo "Creating log directory"
	mkdir -v ${logdir}
	echo "Setting up logging"
	if [ ! -h ${rootdir}/log/server ]; then
		ln -sv ${gamelogdir} ${rootdir}/log/server
	else
		echo "Symbolic link ${gamelogdir} => ${rootdir}/log/server already exists!"
	fi
	sleep 1
	fn_header
	fn_details
	echo "================================="
	echo "Install Complete!"
	echo ""
	echo "To start server type:"
	echo "${selfname} start"
	echo ""
}

case "$1" in
	start)
		fn_startserver;;
	stop)
		fn_stopserver;;
	restart)
		fn_restartserver;;
	update)
		fn_stopserver
		fn_updateserver-hlds
		fn_startserver;;
	monitor)
		fn_monitorserver;;
	install)
		fn_install;;
	debug)
		fn_debugserver;;
	email-test)
		fn_emailtest;;
	details)
		fn_details;;
	*)
		echo "Usage: $0 {start|stop|restart|update|monitor|install|debug|email-test|details}"
		exit 1;;
esac
exit