#!/bin/sh
### BEGIN INIT INFO
# Provides:          ziproxy
# Required-Start:    $remote_fs $network
# Required-Stop:     $remote_fs $network 
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Init script for ziproxy
# Description:       This is the init script for ziproxy.
### END INIT INFO

PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
DAEMON=/usr/bin/ziproxy
NAME=ziproxy
DESC=ziproxy

test -x $DAEMON || exit 0

PIDFILE=/var/run/$NAME.pid
DODTIME=1                   # Time to wait for the server to die, in seconds
                            # If this value is set too low you might not
                            # let some servers to die gracefully and
                            # 'restart' will not work

if [ ! -d /var/run ]; then
	mkdir -p /var/run
fi

# Include ziproxy defaults if available
if [ -f /etc/default/ziproxy ] ; then
	. /etc/default/ziproxy
fi
DAEMON_OPTS="$DAEMON_OPTS -d -p $PIDFILE"

set -e

running_pid() {
    # Check if a given process pid's cmdline matches a given name
    pid=$1
    name=$2
    [ -z "$pid" ] && return 1 
    [ ! -d /proc/$pid ] &&  return 1
    cmd=`cat /proc/$pid/cmdline | tr "\000" "\n"|head -n 1 |cut -d : -f 1`
    # Is this the expected child?
    ##[ "$cmd" != "$name" ] &&  return 1
    [ "$cmd" != "$name" ] &&  return 1
    return 0
}

running() {
# Check if the process is running looking at /proc
# (works for all users)

    # No pidfile, probably no daemon present
    [ ! -f "$PIDFILE" ] && return 1
    # Obtain the pid and check it against the binary name
    pid=`cat $PIDFILE`
    if ! running_pid $pid $DAEMON; then
	rm $PIDFILE
	return 1
    fi
    return 0
}

force_stop() {
# Forcefully kill the process
    [ ! -f "$PIDFILE" ] && return
    if running ; then
        kill -15 $pid
        # Is it really dead?
        [ -n "$DODTIME" ] && sleep "$DODTIME"s
        if running ; then
            kill -9 $pid
            [ -n "$DODTIME" ] && sleep "$DODTIME"s
            if running ; then
                echo "Cannot kill $NAME (pid=$pid)!"
                exit 1
            fi
        fi
    fi
    rm -f $PIDFILE
    return 0
}

is_not_running() {
    if ! running; then
	echo "$NAME is not running."
	exit 1
    fi
}

do_start() {
    off_echo=$1

    [ $off_echo ] || echo -n "Starting $DESC: "
    if running; then
	echo "$NAME is already running."
	exit 0
    fi	
    start-stop-daemon --start --quiet --pidfile $PIDFILE \
	--exec $DAEMON -- $DAEMON_OPTS
    if running; then
        [ $off_echo ] || echo "$NAME."
    else
        echo " ERROR."
    fi
}

do_stop() {
    off_echo=$1

    [ $off_echo ] || echo -n "Stopping $DESC: "
    start-stop-daemon --stop --quiet --pidfile $PIDFILE \
	--exec $DAEMON
    [ -f $PIDFILE ] && rm $PIDFILE
    [ $off_echo ] || echo "$NAME."
}

case "$1" in
    start)
	do_start
	;;
    stop)
	do_stop
	;;
    force-stop)
	echo -n "Forcefully stopping $DESC: "
	is_not_running
        force_stop
        if ! running; then
            echo "$NAME."
        else
            echo " ERROR."
        fi
	;;
    restart|force-reload)
	echo -n "Restarting $DESC: "
	is_not_running
	do_stop 1
	[ -n "$DODTIME" ] && sleep $DODTIME
	do_start 1
	echo "$NAME."
	;;
    status)
	echo -n "$NAME is "
	if running ;  then
            echo "running."
	else
            echo "not running."
            exit 1
	fi
	;;
    *)
	N=/etc/init.d/$NAME
	echo "Usage: $N {start|stop|restart|force-reload|status|force-stop}" >&2
	exit 1
	;;
esac

exit 0
