#!/bin/sh
### BEGIN INIT INFO
# Provides:          dovecot
# Required-Start:    $syslog
# Required-Stop:     $syslog
# Should-Start:      $local_fs $time ntp
# Should-Stop:       $local_fs
# Default-Start:     3
# Default-Stop:      0 1 6
# Short-Description: Dovecot init script
# Description:       Init script for dovecot services
### END INIT INFO
# Do NOT "set -e"

PATH=/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
DESC="IMAP/POP3 mail server"
NAME=dovecot
DAEMON=/usr/sbin/dovecot
DAEMON_ARGS=""
SCRIPTNAME=/etc/init.d/$NAME
CONF=/etc/dovecot/${NAME}.conf

# Exit if the package is not installed
[ -x "$DAEMON" ] || exit 0

# Exit if the configuration file doesn't exist
[ -f "$CONF" ] || exit 0

# Depend on lsb-base (>= 3.0-6) to ensure that this file is present.
. /lib/lsb/init-functions

# cong file readable?
if [ ! -r ${CONF} ]
then
    log_daemon_msg "${CONF}: not readable" "$NAME" && log_end_msg 1;
    exit 1;
fi


### -------------------------------------------------------------------------
### start/stop and failure message color output
### -------------------------------------------------------------------------
COLOR_RED='\033[1;31m'
COLOR_NRM='\033[0;39m'
log_end_msg_new ()
{
    echo -en "\\033[300C\\033[8D"
    if [ "$1" -eq 0 ]
    then
        echo " [ OK ]"
    elif [ "$1" = "9" ]
    then
        echo " disabled"
    else
        echo -e " [${COLOR_RED}fail${COLOR_NRM}]"
    fi
}


### -------------------------------------------------------------------------
### start/stop 
### -------------------------------------------------------------------------

# determine the location of the PID file
# overide by setting base_dir in conf file or PIDBASE in /etc/defaults/$NAME
PIDBASE=${PIDBASE:-`sed -r "s/^[ \t]*base_dir[ \t]*=[ \t]*([^ \t]*)/\1/;t;d" ${CONF}`}
PIDFILE=${PIDBASE:-/var/run/dovecot/}master.pid

#
# Function that starts the daemon/service
#
do_start()
{
    start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON -- $DAEMON_ARGS    || return 2
}

#
# Function that stops the daemon/service
#
do_stop()
{
    # Return
    #   0 if daemon has been stopped
    #   1 if daemon was already stopped
    #   2 if daemon could not be stopped
    #   other if a failure occurred
    start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PIDFILE --name ${DAEMON##*/}
    RETVAL="$?"
    [ "$RETVAL" = 2 ] && return 2
    # Wait for children to finish too if this is a daemon that forks
    # and if the daemon is only ever run from this initscript.
    # If the above conditions are not satisfied then add some other code
    # that waits for the process to drop all resources that could be
    # needed by services started subsequently.  A last resort is to
    # sleep for some time.
    start-stop-daemon --stop --quiet --oknodo --retry=0/30/KILL/5 --pidfile $PIDFILE --name ${DAEMON##*/}
    [ "$?" = 2 ] && return 2
    # Many daemons don't delete their pidfiles when they exit.
    rm -f $PIDFILE
    return "$RETVAL"
}

#
# Function that sends a SIGHUP to the daemon/service
#
do_reload() {
    #
    # If the daemon can reload its configuration without
    # restarting (for example, when it is sent a SIGHUP),
    # then implement that here.
    #
    start-stop-daemon --stop --signal USR1 --quiet --pidfile $PIDFILE --name $NAME
    return 0
}


case "$1" in
    start)
        if start-stop-daemon --test --start --exec $DAEMON >/dev/null
        then
            log_daemon_msg "Starting $DESC" "$NAME"
            do_start
            case "$?" in
                0|1) log_end_msg 0 ;;
                2)   log_end_msg 1 ;;
            esac
        fi
        ;;
    stop)
        if ! start-stop-daemon --test --start --exec $DAEMON >/dev/null
        then
            log_daemon_msg "Stopping $DESC" "$NAME"
            do_stop
            case "$?" in
                0|1) log_end_msg 0 ;;
                2)   log_end_msg 1 ;;
            esac
        fi
        ;;
    reload|force-reload)
        log_daemon_msg "Reloading $DESC" "$NAME"
        do_reload
        log_end_msg $?
        ;;
    restart)
        # If the "reload" option is implemented then remove the
        # 'force-reload' alias
        log_daemon_msg "Restarting $DESC" "$NAME"
        do_stop
        case "$?" in
            0|1)
                do_start
                case "$?" in
                    0) log_end_msg 0 ;;
                    1) log_end_msg 1 ;; # Old process is still running
                    *) log_end_msg 1 ;; # Failed to start
                esac
                ;;
            *)
                # Failed to stop
                log_end_msg 1
                ;;
        esac
        ;;
    status)
        echo -n " * POP3/IMAP dovecot"
        if start-stop-daemon --test --start --exec $DAEMON >/dev/null
        then
            log_end_msg_new 1
        else
            log_end_msg_new 0
        fi
        ;;
    *)
        echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload|status}" >&2
        exit 3
        ;;
esac

exit 0