#! /bin/sh
#
# squid		Startup script for the SQUID HTTP proxy-cache.
#
# Version:	@(#)squid.rc  2.20  01-Oct-2001  miquels@cistron.nl
#

NAME=squid
DAEMON=/usr/sbin/squid
LIB=/usr/lib/squid
PIDFILE=/var/run/$NAME.pid
SQUID_ARGS="-D -sYC"

[ ! -f /etc/default/squid ] || . /etc/default/squid

PATH=/bin:/usr/bin:/sbin:/usr/sbin

[ -x $DAEMON ] || exit 0

grepconf2 () {
	w=" 	" # space tab
	sq=/etc/$NAME.conf
	# sed is cool.
	res=`sed -ne '
		s/^'$1'['"$w"']\+[^'"$w"']\+['"$w"']\+\([^'"$w"']\+\).*$/\1/p;
		t end;
		d;
		:end q' < $sq`
	[ -n "$res" ] || res=$2
	echo "$res"
}

#
#	Try to increase the # of filedescriptors we can open.
#
maxfds () {
	[ -n "$SQUID_MAXFD" ] || return
	[ -f /proc/sys/fs/file-max ] || return 0
	[ $SQUID_MAXFD -le 4096 ] || SQUID_MAXFD=4096
	global_file_max=`cat /proc/sys/fs/file-max`
	minimal_file_max=$(($SQUID_MAXFD + 4096))
	if [ "$global_file_max" -lt $minimal_file_max ]
	then
		echo $minimal_file_max > /proc/sys/fs/file-max
	fi
	ulimit -n $SQUID_MAXFD
}

start () {
	cdr=`grepconf2 cache_dir /var/spool/$NAME`
	case "$cdr" in
		[0-9]*)
			echo "squid: squid.conf contains 2.2.5 syntax - not starting!" >&2
			exit 1
			;;
	esac
	maxfds
	umask 027
	cd $cdr
	start-stop-daemon --quiet --start \
		--pidfile $PIDFILE \
		--exec $DAEMON -- $SQUID_ARGS < /dev/null
	sleep 1
}

stop () {
	PID=`cat $PIDFILE 2>/dev/null`
	start-stop-daemon --stop --quiet --pidfile $PIDFILE --exec $DAEMON
	#
	#	Now we have to wait until squid has _really_ stopped.
	#
	sleep 2
	if test -n "$PID" && kill -0 $PID 2>/dev/null
	then
		echo -n "Waiting ."
		cnt=0
		while kill -0 $PID 2>/dev/null
		do
			cnt=`expr $cnt + 1`
			if [ $cnt -gt 60 ]
			then
				#
				#	Waited 120 seconds now. Fail.
				#
				echo -n " Failed.. "
				break
			fi
			sleep 2
			echo -n "."
		done
		[ "$1" = verbose ] && echo "done."
	else
		[ "$1" = verbose ] && echo "$NAME."
	fi
}

case "$1" in
    start)
	echo -n "Starting proxy server: "
	start
	echo "$NAME."
	;;
    stop)
	echo -n "Stopping proxy server: "
	stop verbose
	;;
    reload|force-reload)
	echo "Reloading $NAME configuration files"
	start-stop-daemon --stop --signal 1 \
		--pidfile $PIDFILE --quiet --exec $DAEMON
	;;
    restart)
	echo "Restarting proxy server: "
	stop
	start
	echo "$NAME."
	;;
    *)
	echo "Usage: /etc/init.d/$NAME {start|stop|reload|force-reload|restart}"
	exit 1
	;;
esac

exit 0

