#!/bin/sh
### BEGIN INIT INFO
# Provides:          calypso
# Required-Start:    $network $remote_fs
# Required-Stop:     $remote_fs
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: CalDAV/CardDAV server
# Description:       Calendar and Contact server over WebDAV
#                    using the CalDAV and CardDAV protocols
### END INIT INFO

# Author: Keith Packard <keithp@keithp.com>
# Author: Joe Nahmias <jello@debian.org>
# Author: Petter Reinholdtsen <pere@debian.org>

# PATH should only include /usr/* if it runs after the mountnfs.sh script
PATH=/sbin:/usr/sbin:/bin:/usr/bin
DESC="Calypso CalDAV Server"
NAME=calypso
USER=calypso
GROUP=calypso
BINDIP=127.0.0.1
DAEMON=/usr/bin/$NAME
PIDFILE=/var/run/calypso/$NAME.pid
CALYPSO_OPTS="--daemon"

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

# Read configuration variable file if it is present
[ -r /etc/default/$NAME ] && . /etc/default/$NAME

if [ "$BINDIP" ] ; then
    CALYPSO_OPTS="${CALYPSO_OPTS:+$CALYPSO_OPTS }--host=$BINDIP"
fi

if [ "$PIDFILE" ] ; then
    CALYPSO_OPTS="${CALYPSO_OPTS:+$CALYPSO_OPTS }--pid-file=$PIDFILE"
fi

# Load the VERBOSE setting and other rcS variables
. /lib/init/vars.sh

# Define LSB log_* functions.
# Depend on lsb-base (>= 3.2-14) to ensure that this file is present
# and status_of_proc is working.
. /lib/lsb/init-functions

#
# Check whether daemon starting is enabled
#
check_start_daemon()
{
    if [ "$DISABLE_CALPYSO" = "yes" ]; then
        [ "$VERBOSE" != no ] && \
            log_warning_msg "Not starting $NAME, disabled via /etc/default/$NAME"
        return 1
    else
        return 0
    fi
}

#
# Function that starts the daemon/service
#
do_start()
{
    # Return
    #   0 if daemon has been started
    #   1 if daemon was already running
    #   2 if daemon could not be started
    mkdir -p $(dirname $PIDFILE)
    chown $USER:$GROUP $(dirname $PIDFILE)
    start-stop-daemon \
        --quiet \
        --start \
        --chuid $USER \
        --pidfile $PIDFILE \
        --exec $DAEMON \
        -- $CALYPSO_OPTS \
        || return 2
    # Add code here, if necessary, that waits for the process to be ready
    # to handle requests from services started subsequently which depend
    # on this one.      As a last resort, sleep for some time.
}

#
# 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 $NAME
    RETVAL="$?"
    [ "$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 \
	--exec $DAEMON
    [ "$?" = 2 ] && return 2
    # Many daemons don't delete their pidfiles when they exit.
    rm -f $PIDFILE
    return "$RETVAL"
}

case "$1" in
    start)
        check_start_daemon || exit 0
        [ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME"
        do_start
        case "$?" in
            0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
            2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
        esac
        ;;
    stop)
        [ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
        do_stop
        case "$?" in
            0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
            2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
        esac
        ;;
    status)
        status_of_proc "$DAEMON" "$NAME" && exit 0 || exit $?
        ;;
    restart|force-reload)
        #
        # 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
        ;;
    *)
        echo "Usage: $0 {start|stop|status|restart|force-reload}" >&2
        exit 3
        ;;
esac

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