#! /bin/sh
#
# squid        Startup script for the SQUID HTTP proxy-cache.
#
# Version:    @(#)squid.rc  2.20  01-Oct-2001  miquels@cistron.nl
#
### BEGIN INIT INFO
# Provides:          squid
# Required-Start:    $local_fs $network
# Required-Stop:     $local_fs $network
# Should-Start:      $named
# Should-Stop:       $named
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Squid HTTP Proxy
### END INIT INFO

NAME=squid
DAEMON=/usr/sbin/squid
LIB=/usr/lib/squid
PIDFILE=/var/run/squid.pid
# export LD_PRELOAD=/usr/local/lib/libjemalloc.so # ini apabila anda menggunakan jemalloc
SQUID_ARGS="-YC"

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

. /lib/lsb/init-functions

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

[ -x $DAEMON ] || exit 0

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

grepconf2 () {
    w="     " # space tab
    sq=/etc/squid/$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 "$SQUID_MAXFD" ] || return
    [ -f /proc/sys/fs/file-max ] || return 0
    global_file_max=`cat /proc/sys/fs/file-max`
    minimal_file_max=$(($SQUID_MAXFD + 4096))
    if [ "$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 /cache-1`
    ctp=`grepconf cache_dir ufs`

    case "$cdr" in
        [0-9]*)
            log_failure_msg "squid: squid.conf contains 2.2.5 syntax - not starting!"
            log_end_msg 1
            exit 1
            ;;
    esac
    
    #
    # Create spool dirs if they don't exist.
    #
    if [ -d "$cdr" -a ! -d "$cdr/00" ] || [ "$ctp" = "coss" -a ! -w "$cdr" ]
    then
        log_warning_msg "Creating squid cache structure"
        $DAEMON $SQUID_ARGS -z
    fi

    if [ "$CHUID" = "" ]; then
        CHUID=root
    fi

    maxfds
    umask 027
    start-stop-daemon --quiet --start \
        --pidfile $PIDFILE \
        --chuid $CHUID \
        --exec $DAEMON -- $SQUID_ARGS < /dev/null
    return $?
}

stop () {
    PID=`cat $PIDFILE 2>/dev/null`
    start-stop-daemon --stop --quiet --pidfile $PIDFILE --name squid
    #
    #    Now we have to wait until squid has _really_ stopped.
    #
    sleep 2
    if test -n "$PID" && kill -0 $PID 2>/dev/null
    then
        log_action_begin_msg " Waiting"
        cnt=0
        while kill -0 $PID 2>/dev/null
        do
            cnt=`expr $cnt + 1`
            if [ $cnt -gt 24 ]
            then
                log_action_end_msg 1
                return 1
            fi
            sleep 5
            log_action_cont_msg ""
        done
        log_action_end_msg 0
        return 0
    else
        return 0
    fi
}

case "$1" in
    start)
    log_daemon_msg "Starting Squid HTTP proxy" "squid"
    if start ; then
        log_end_msg $?
    else
        log_end_msg $?
    fi
    ;;
    stop)
    log_daemon_msg "Stopping Squid HTTP proxy" "squid"
    if stop ; then
        log_end_msg $?
    else
        log_end_msg $?
    fi
    ;;
    reload|force-reload)
    log_action_msg "Reloading Squid configuration files"
    $DAEMON -k reconfigure
    log_action_end_msg 0
    ;;
    restart)
    log_daemon_msg "Restarting Squid HTTP proxy" "squid"
stop
    if start ; then
        log_end_msg $?
    else
        log_end_msg $?
    fi
    ;;
    status)
    status_of_proc -p "$PIDFILE" "$DAEMON" squid && exit 0 || exit $?
    ;;
    *)
    echo "Usage: /etc/init.d/$NAME {start|stop|reload|force-reload|restart|status}"
    exit 3
    ;;
esac

exit 0