#!/bin/bash

# chkconfig: - 90 25

# pidfile: /var/run/squid.pid

# config: /etc/squid/squid.conf

#

### BEGIN INIT INFO

# Provides: squid

# Short-Description: starting and stopping Squid Internet Object Cache

# Description: Squid - Internet Object Cache. Internet object caching is \

#       a way to store requested Internet objects (i.e., data available \

#       via the HTTP, FTP, and gopher protocols) on a system closer to the \

#       requesting site than to the source. Web browsers can then use the \

#       local Squid cache as a proxy HTTP server, reducing access time as \

#       well as bandwidth consumption.

### END INIT INFO

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

export PATH

# Source function library.

. /etc/rc.d/init.d/functions

# Source networking configuration.

. /etc/sysconfig/network

if [ -f /etc/sysconfig/squid ]; then

	. /etc/sysconfig/squid

fi

# don't raise an error if the config file is incomplete

# set defaults instead:

SQUID_OPTS=${SQUID_OPTS:-""}

SQUID_PIDFILE_TIMEOUT=${SQUID_PIDFILE_TIMEOUT:-20}

SQUID_SHUTDOWN_TIMEOUT=${SQUID_SHUTDOWN_TIMEOUT:-100}

SQUID_CONF=${SQUID_CONF:-"/etc/squid/squid.conf"}

# determine the name of the squid binary

[ -f /usr/sbin/squid ] && SQUID=squid

prog="$SQUID"

# determine which one is the cache_swap directory

CACHE_SWAP=`sed -e 's/#.*//g' $SQUID_CONF | \

	grep cache_dir | awk '{ print $3 }'`

RETVAL=0

probe() {

	# Check that networking is up.

	[ ${NETWORKING} = "no" ] && exit 1

	[ `id -u` -ne 0 ] && exit 4

	# check if the squid conf file is present

	[ -f $SQUID_CONF ] || exit 6

}

start() {

	probe

	parse=`$SQUID -k parse -f $SQUID_CONF 2>&1`

	RETVAL=$?

	if [ $RETVAL -ne 0 ]; then

		echo -n $"Starting $prog: "

		echo_failure

		echo

		echo "$parse"

		return 1

	fi

	for adir in $CACHE_SWAP; do

		if [ ! -d $adir/00 ]; then

			echo -n "init_cache_dir $adir... "

			$SQUID -z -F -f $SQUID_CONF >> /var/log/squid/squid.out 2>&1

		fi

	done

	echo -n $"Starting $prog: "

	$SQUID $SQUID_OPTS -f $SQUID_CONF >> /var/log/squid/squid.out 2>&1

	RETVAL=$?

	if [ $RETVAL -eq 0 ]; then

		timeout=0;

		while : ; do

			[ ! -f /var/run/squid.pid ] || break

			if [ $timeout -ge $SQUID_PIDFILE_TIMEOUT ]; then

				RETVAL=1

				break

			fi

			sleep 1 && echo -n "."

			timeout=$((timeout+1))

		done

	fi

	[ $RETVAL -eq 0 ] && touch /var/lock/subsys/$SQUID

	[ $RETVAL -eq 0 ] && echo_success

	[ $RETVAL -ne 0 ] && echo_failure

	echo

	return $RETVAL

}

stop() {

	echo -n $"Stopping $prog: "

	$SQUID -k check -f $SQUID_CONF >> /var/log/squid/squid.out 2>&1

	RETVAL=$?

	if [ $RETVAL -eq 0 ] ; then

		$SQUID -k shutdown -f $SQUID_CONF &

		rm -f /var/lock/subsys/$SQUID

		timeout=0

		while : ; do

			[ -f /var/run/squid.pid ] || break

			if [ $timeout -ge $SQUID_SHUTDOWN_TIMEOUT ]; then

				echo

				return 1

			fi

			sleep 2 && echo -n "."

			timeout=$((timeout+2))

		done

		echo_success

		echo

	else

		echo_failure

		if [ ! -e /var/lock/subsys/$SQUID ]; then

			RETVAL=0

		fi

		echo

	fi

	return $RETVAL

}

reload() {

	$SQUID $SQUID_OPTS -k reconfigure -f $SQUID_CONF

}

restart() {

	stop

	start

}

condrestart() {

	[ -e /var/lock/subsys/squid ] && restart || :

}

rhstatus() {

	status $SQUID && $SQUID -k check -f $SQUID_CONF

}

case "$1" in

start)

	start

	;;

stop)

	stop

	;;

reload|force-reload)

	reload

	;;

restart)

	restart

	;;

condrestart|try-restart)

	condrestart

	;;

status)

	rhstatus

	;;

probe)

	probe

	;;

*)

	echo $"Usage: $0 {start|stop|status|reload|force-reload|restart|try-restart|probe}"

	exit 2

esac

exit $?