#!/bin/bash

# squid		This shell script takes care of starting and stopping

#		Squid Internet Object Cache

#

# chkconfig: - 90 25

# 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.

# pidfile: /var/run/squid.pid

# config: /etc/squid/squid.conf

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

export PATH

# Source function library.

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

# Source networking configuration.

. /etc/sysconfig/network

# Check that networking is up.

[ ${NETWORKING} = "no" ] && exit 0

# check if the squid conf file is present

[ -f /etc/squid/squid.conf ] || exit 0

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:-"-D"}

SQUID_PIDFILE_TIMEOUT=${SQUID_PIDFILE_TIMEOUT:-20}

SQUID_SHUTDOWN_TIMEOUT=${SQUID_SHUTDOWN_TIMEOUT:-100}

# determine the name of the squid binary

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

[ -z "$SQUID" ] && exit 0

prog="$SQUID"

# determine which one is the cache_swap directory

CACHE_SWAP=`sed -e 's/#.*//g' /etc/squid/squid.conf | \

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

[ -z "$CACHE_SWAP" ] && CACHE_SWAP=/var/spool/squid

RETVAL=0

start() {

    for adir in $CACHE_SWAP; do

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

	     echo -n "init_cache_dir $adir... "

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

	fi

    done

    echo -n $"Starting $prog: "

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

    RETVAL=$?

    if [ $RETVAL -eq 0 ] ; then

        $SQUID -k shutdown &

    	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

	echo

    fi

    return $RETVAL

}    

reload() {

    $SQUID $SQUID_OPTS -k reconfigure 

}

restart() {

    stop

    start

}    

condrestart() {

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

}

rhstatus() { 

    status $SQUID

    $SQUID -k check

}

probe() {

    return 0

}    

case "$1" in

start)

    start

    ;;

stop)

    stop

    ;;

reload)

    reload

    ;;

restart)

    restart

    ;;

condrestart)

    condrestart

    ;;

status)

    rhstatus

    ;;

probe)

    exit 0

    ;;

*)

    echo $"Usage: $0 {start|stop|status|reload|restart|condrestart}"

    exit 1

esac

exit $?