File: yaskkserv.init

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yaskkserv 0.6.1-2
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#!/bin/sh 
#
# Example init.d script with LSB support.
#
# Please read this init.d carefully and modify the sections to
# adjust it to the program you want to run.
#
# Copyright (c) 2007 Javier Fernandez-Sanguino <jfs@debian.org>
#
# This is free software; you may redistribute it and/or modify
# it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2,
# or (at your option) any later version.
#
# This is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License with
# the Debian operating system, in /usr/share/common-licenses/GPL;  if
# not, write to the Free Software Foundation, Inc., 59 Temple Place,
# Suite 330, Boston, MA 02111-1307 USA
#
### BEGIN INIT INFO
# Provides:          yaskkserv
# Required-Start:    $network $syslog $remote_fs
# Required-Stop:     $network $syslog $remote_fs
# Should-Start:      $named
# Should-Stop:       $named
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: small and fast SKK dictionary server
# Description:       yaskkserv is a dictionary server for the SKK Japanese
#                    input method system. yaskkserv is written in C++ from
#                    scratch in consideration of embedded environment, but
#                    is compatible with skkserv on the protocol behavior.
#                    yaskkserv can use multiple dictionaries and also
#                    supports server completion. 
### END INIT INFO

set -e

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

NAME=yaskkserv              # Introduce the short server's name here
DESC=yaskkserv              # Introduce a short description here
LOGDIR=/var/log/yaskkserv  # Log directory to use
#PIDFILE=/var/run/$NAME.pid 

# Default options, these can be overriden by the information
# at /etc/default/$NAME
YASKKSERV_BIN="yaskkserv_hairy"
DAEMON_OPTS=""          # Additional options given to the server 
DICS="SKK-JISYO.L"	# Dictionaries

DODTIME=10              # 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
                        
LOGFILE=$LOGDIR/$NAME.log  # Server logfile
#DAEMONUSER=yaskkserv   # Users to run the daemons as. If this value
                        # is set start-stop-daemon will chuid the server

# Include defaults if available
if [ -f /etc/default/$NAME ] ; then
	. /etc/default/$NAME
fi

DAEMON=/usr/sbin/${YASKKSERV_BIN} # Introduce the server's location here

test -x $DAEMON || exit 0
test -x $DAEMON_WRAPPER || exit 0

for DIC in $DICS
do
    DICBN=`basename $DIC`
    DIC_LIST="${DIC_LIST} /usr/share/yaskkserv/${DICBN}.yaskkserv"
done

. /lib/lsb/init-functions

# Use this if you want the user to explicitly set 'RUN' in 
# /etc/default/
#if [ "x$RUN" != "xyes" ] ; then
#    log_failure_msg "$NAME disabled, please adjust the configuration to your needs "
#    log_failure_msg "and then set RUN to 'yes' in /etc/default/$NAME to enable it."
#    exit 1
#fi

# Check that the user exists (if we set a user)
# Does the user exist?
if [ -n "$DAEMONUSER" ] ; then
    if getent passwd | grep -q "^$DAEMONUSER:"; then
        # Obtain the uid and gid
        DAEMONUID=`getent passwd |grep "^$DAEMONUSER:" | awk -F : '{print $3}'`
        DAEMONGID=`getent passwd |grep "^$DAEMONUSER:" | awk -F : '{print $4}'`
    else
        log_failure_msg "The user $DAEMONUSER, required to run $NAME does not exist."
        exit 1
    fi
fi


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 server
    [ "$cmd" != "$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
#    pid=`cat $PIDFILE`
    pid=`pidof $YASKKSERV_BIN`
    running_pid $pid $DAEMON || return 1
    return 0
}

start_server() {
# Start the process using the wrapper
#        if [ -z "$DAEMONUSER" ] ; then
#            start-stop-daemon --start --quiet \
#                        --exec $DAEMON -- $DAEMON_OPTS $DIC_LIST
            $DAEMON $DAEMON_OPTS $DIC_LIST
            errcode=$?
#        else
# if we are using a daemonuser then change the user id
#            start-stop-daemon --start --quiet \
#                        --chuid $DAEMONUSER \
#                        --exec $DAEMON -- $DAEMON_OPTS $DIC_LIST
#            errcode=$?
#        fi
	return $errcode
}

stop_server() {
# Stop the process using the wrapper
#        if [ -z "$DAEMONUSER" ] ; then
#            start-stop-daemon --stop --quiet --pidfile $PIDFILE \
#                        --exec $DAEMON
            kill `pidof $YASKKSERV_BIN`
            errcode=$?
#        else
# if we are using a daemonuser then look for process that match
#            start-stop-daemon --stop --quiet --pidfile $PIDFILE \
#                        --user $DAEMONUSER \
#                        --exec $DAEMON
#            errcode=$
#        fi

	return $errcode
}

reload_server() {
#    [ ! -f "$PIDFILE" ] && return 1
#    pid=`cat $PIDFILE` # This is the daemon's pid
    pid=`pidof $YASKKSERV_BIN`
    # Send a SIGHUP
    kill -1 $pid
    return $?
}

force_stop() {
# Force the process to die killing it manually
#	[ ! -e "$PIDFILE" ] && return
	if running ; then
		kill -15 $pid
	# Is it really dead?
		sleep "$DIETIME"s
		if running ; then
			kill -9 $pid
			sleep "$DIETIME"s
			if running ; then
				echo "Cannot kill $NAME (pid=$pid)!"
				exit 1
			fi
		fi
	fi
#	rm -f $PIDFILE
}


case "$1" in
  start)
	log_daemon_msg "Starting $DESC " "$NAME"
        # Check if it's running first
        if running ;  then
            log_progress_msg "apparently already running"
            log_end_msg 0
            exit 0
        fi
        if start_server && running ;  then
            # It's ok, the server started and is running
            log_end_msg 0
        else
            # Either we could not start it or it is not running
            # after we did
            # NOTE: Some servers might die some time after they start,
            # this code does not try to detect this and might give
            # a false positive (use 'status' for that)
            log_end_msg 1
        fi
	;;
  stop)
        log_daemon_msg "Stopping $DESC" "$NAME"
        if running ; then
            # Only stop the server if we see it running
            stop_server
            log_end_msg $?
        else
            # If it's not running don't do anything
            log_progress_msg "apparently not running"
            log_end_msg 0
            exit 0
        fi
        ;;
  force-stop)
        # First try to stop gracefully the program
        $0 stop
        if running; then
            # If it's still running try to kill it more forcefully
            log_daemon_msg "Stopping (force) $DESC" "$NAME"
            force_stop
            log_end_msg $?
        fi
	;;
  restart|force-reload)
        log_daemon_msg "Restarting $DESC" "$NAME"
        $0 stop
        # Wait some sensible amount, some server need this
        [ -n "$DIETIME" ] && sleep $DIETIME
        start_server
        running
        log_end_msg $?
	;;
  status)

        log_daemon_msg "Checking status of $DESC" "$NAME"
        if running ;  then
            log_progress_msg "running"
            log_end_msg 0
        else
            log_progress_msg "apparently not running"
            log_end_msg 1
            exit 1
        fi
        ;;
  # Use this if the daemon cannot reload
  reload)
        log_warning_msg "Reloading $NAME daemon: not implemented, as the daemon"
        log_warning_msg "cannot re-read the config file (use restart)."
        ;;
  # And this if it cann
  #reload)
          #
          # If the daemon can reload its config files on the fly
          # for example by sending it SIGHUP, do it here.
          #
          # If the daemon responds to changes in its config file
          # directly anyway, make this a do-nothing entry.
          #
          # log_daemon_msg "Reloading $DESC configuration files" "$NAME"
          # if running ; then
          #    reload_server
          #    if ! running ;  then
          # Process died after we tried to reload
          #       log_progress_msg "died on reload"
          #       log_end_msg 1
          #       exit 1
          #    fi
          # else
          #    log_progress_msg "server is not running"
          #    log_end_msg 1
          #    exit 1
          # fi
                                                                                    #;;

  *)
	N=/etc/init.d/$NAME
	echo "Usage: $N {start|stop|force-stop|restart|force-reload|status}" >&2
	exit 1
	;;
esac

exit 0