OGP-Agent-Linux/ogp_agent_run

#!/bin/bash
#
#
#	A wrapper script for the OGP agent perl script.
#	Performs auto-restarting of the agent on crash. You can
#	extend this to log crashes and more.
#
# The ogp_agent_run script should be at the top level of the agent tree
# Make sure we are in that directory since the script assumes this is the case
AGENTDIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
BASH_PREFS_CONF="$AGENTDIR/Cfg/bash_prefs.cfg" 
chmod -Rf 770 $AGENTDIR
find $AGENTDIR -type f -print | xargs chmod ug=rw 
if [ -d "$AGENTDIR/steamcmd" ]; then
	chmod +x $AGENTDIR/steamcmd/linux32/*
	chmod +x $AGENTDIR/steamcmd/*.sh
fi
if [ -d "$AGENTDIR/screenlogs" ]; then
	chmod -Rf ug=rwx $AGENTDIR/screenlogs
fi
chmod +x $AGENTDIR/ogp_agent.pl
chmod +x $AGENTDIR/ogp_agent_run

if test `id -u` -eq 0; then
	echo
	echo
	echo "************** WARNING ***************"
	echo "Running OGP's agent as root  "
	echo "is highly discouraged. It is generally"
	echo "unnecessary to use root privileges to "
	echo "execute the agent.         "
	echo "**************************************"
	echo
	echo
	timeout=10
	while test $timeout -gt 0; do
		echo -n "The agent will continue to launch in $timeout seconds\r"
		timeout=`expr $timeout - 1`
		sleep 1
	done
fi

init() {
	RESTART="yes"
	AGENT="$AGENTDIR/ogp_agent.pl"
	TIMEOUT=10 # time to wait after a crash (in seconds)
	PID_FILE=""
	
	# Should we perform an automatic update?
	if [ -e $BASH_PREFS_CONF ]
	then
		source "$BASH_PREFS_CONF"
		
		if [ "$agent_auto_update" -eq "1" ]
		then
			AUTO_UPDATE="yes"
		fi
		
		if [ -z "$sf_update_mirror" ]
		then
			MIRROR="master"
		else
			MIRROR=$sf_update_mirror
		fi
	else
		AUTO_UPDATE="yes"
		MIRROR="master"
	fi
	
	while test $# -gt 0; do
		case "$1" in
		"-pidfile")
			PID_FILE="$2"
			PID_FILE_SET=1
			echo $$ > $PID_FILE
			shift ;;
		esac
		shift
	done

	if test ! -f "$AGENT"; then
		echo "ERROR: '$AGENT' not found, exiting"
		quit 1
	elif test ! -x "$AGENT"; then
		# Could try chmod but dont know what we will be
		# chmoding so just fail.
		echo "ERROR: '$AGENT' not executable, exiting"
		quit 1
	fi

	CMD="perl $AGENT"
}

syntax () {
	# Prints script syntax

	echo "Syntax:"
	echo "$0"
}

checkDepends() {
	CURL=`which curl 2>/dev/null`
	if test "$?" -gt 0; then
		echo "WARNING: Failed to locate curl binary."
	else
		echo "INFO: Located curl: $CURL"
	fi
	UNZIP=`which unzip 2>/dev/null`
	if test "$?" -gt 0; then
		echo "WARNING: Failed to locate unzip binary."
	else
		echo "INFO: Located unzip: $UNZIP"
	fi
}

update() {
	# Run the update
	if test -n "$AUTO_UPDATE"; then
		if [ -z "$CURL" -o -z "$UNZIP" ]; then
			checkDepends
		fi
		if [ -f "$CURL" -a -x "$CURL" ] && [ -f "$UNZIP" -a -x "$UNZIP" ]; then
			CURRENT=$(cat $AGENTDIR/Cfg/Config.pm | grep version | grep -oh [0-9]*)
			REVISION=$(curl -s http://svn.code.sf.net/p/hldstart/code/trunk/ | grep "<h2>" | awk '{print $4}' | tr -d [:punct:])
			if [ "$CURRENT" == "$REVISION" ]; then
				echo "The agent is up to date."
			else
				URL=http://${MIRROR}.dl.sourceforge.net/project/ogpextras/Alternative-Snapshot/linux-agent-${REVISION}.zip
				HEAD=$(curl -Os --head -w "%{http_code}" "$URL")
				if [ "$HEAD" == "200" ]; then
					echo "Updating agent using curl."
					curl -Os $URL
					if test $? -ne 0; then
						echo "`date`: curl failed to download the update package."
					else
						unzip -oq linux-agent-${REVISION}.zip
						if test $? -ne 0; then
							echo "`date`: Unable to unzip the update package."
							echo "cleaning up..."
							rm -Rf linux-agent-* &> /dev/null
						else
							cd linux-agent-${REVISION}
							cp -avf Crypt File Frontier KKrcon ogp_agent.pl ogp_screenrc ogp_agent_run agent_conf.sh $AGENTDIR &> /dev/null
							if test $? -ne 0; then
								echo "`date`: The agent files cannot be overwritten."
								echo "Cleaning up..."
								cd ..
								rm -Rf linux-agent-* &> /dev/null
								echo "Agent update failed."
							else
								if test ! -d "$AGENTDIR/IspConfig"; then
									cp -Rf IspConfig $AGENTDIR/IspConfig &> /dev/null
								fi
								if test ! -d "$AGENTDIR/EHCP"; then
									cp -Rf EHCP $AGENTDIR/EHCP &> /dev/null
								fi
								if test ! -f "$AGENTDIR/Cfg/Preferences.pm"; then
									cp -f Cfg/Preferences.pm $AGENTDIR/Cfg/Preferences.pm &> /dev/null
								fi
								echo "Fixing permissions..."
								chmod ug+x $AGENTDIR/ogp_agent.pl &> /dev/null
								chmod ug+x $AGENTDIR/ogp_agent_run &> /dev/null
								echo "Cleaning up..."
								cd ..
								rm -Rf linux-agent-* &> /dev/null
								sed -i "s/version.*/version => 'v${REVISION}',/" $AGENTDIR/Cfg/Config.pm
								echo "Agent updated successfully."
							fi
						fi
					fi
				else
					echo "There is a update available (${REVISION}) but the download source is not ready.";
					echo "Try again later."
				fi
			fi
		else
			echo "Update failed."
		fi
	fi
	return 0
}
	
run() {
	update
	if test -n "$RESTART" ; then
		echo "Agent will auto-restart if there is a crash."
		#loop forever
		while true
		do
			# Run
			$CMD
			echo "`date`: Agent restart in $TIMEOUT seconds"
			# don't thrash the hard disk if the agent dies, wait a little
			sleep $TIMEOUT
		done # while true
	else
		$CMD
	fi
}

quit() {
	# Exits with the give error code, 1
	# if none specified.
	# exit code 2 also prints syntax
	exitcode="$1"

	# default to failure
	if test -z "$exitcode"; then
		exitcode=1
	fi

	case "$exitcode" in
	0)
		echo "`date`: OGP Agent Quit" ;;
	2)
		syntax ;;
	*)
		echo "`date`: OGP Agent Failed" ;;
	esac

	# Remove pid file
	if test -n "$PID_FILE" && test -f "$PID_FILE" ; then
		# The specified pid file
		rm -f $PID_FILE
	fi

	# reset SIGINT and then kill ourselves properly
	trap - 2
	kill -2 $$
}

# Initialise
init $*

# Run
run

# Quit normally
quit 0