#! /bin/sh
# This file is part of mailfrom filter.
# Copyright (C) 2005, 2006 Sergey Poznyakoff
#
# This program is free software; you can 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 program 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
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA 02110-1301 USA 

PIDFILE=<DEFAULT_PIDFILE>
DAEMON=<DEFAULT_DAEMON>
ARGS=""
PS="ps axwwww"

mailfromd_start() {
    if mailfromd_status -q; then
	cat >&2 <<-EOT
	Mailfromd seems to be running.
	Try \`$0 status' to examine, or \`$0 restart' to force restart.
	EOT
	exit 1
    fi
    echo "Starting mailfromd..."
    rm -f $PIDFILE
    if eval $DAEMON $ARGS ; then
	if [ ! -r $PIDFILE ]; then
	    sleep 1
	    test -r $PIDFILE || echo "mailfromd NOT started" >&2
        fi
    else 	
	echo "mailfromd failed to start" >&2
    fi	
}

mailfromd_stop() {
    echo "Stopping mailfromd..."
    if [ -r $PIDFILE ]; then
	PID=`head -n 1 $PIDFILE`
	kill -TERM -$PID 2>/dev/null
	N=0
	while [ -r $PIDFILE ]
	do
	    N=$(($N + 1))
	    if [ $N -gt 5 ]; then 
	        break
	    fi
            sleep 1
	done
	if [ -r $PIDFILE ]; then
	    echo "Still running. Killing it..." >&2
	    kill -KILL $PID 2>/dev/null
	    rm $PIDFILE
	fi
    else
	echo "mailfromd is not running" >&2
    fi
} 
    
mailfromd_status() {
    if [ -r $PIDFILE ]; then
        PID=`head -n 1 $PIDFILE`
	if [ "$1" != "-q" ]; then
            echo "mailformd appears to be running at $PID"
	fi
    else
        PID='[0-9][0-9]*'
    fi
    $PS | grep "[0-9]:[0-9][0-9] $DAEMON " |
                while read pid tt stat time command
                do
                        echo $pid $command
                done |
		grep $1 "$PID $command"
}

mailfromd_configtest() {
    case $# in
    0) CFGOPT=;;
    1) CFGOPT=$1;;
    *) echo "$0: too many arguments, try \`$0 help' for more info" >&2
       exit 1;;
    esac 
    $DAEMON $CFGOPT --lint
}

export_cf_macros() {
    echo "O Milter.macros.$1=$2"
}

export_mc_macros() {
    un=`echo $1 | tr a-z A-Z`
    echo "define(\`confMILTER_MACROS_$un', ifdef(\`confMILTER_MACROS_$un',\`confMILTER_MACROS_$un\`,' ')\`$2')"
}


mailfromd_macros() {
    EXPORT=export_mc_macros
    CFGOPT=
    while [ $# -ne 0 ]
    do
       case $1 in
       -c|--cf) EXPORT=export_cf_macros; shift;;
       --)   shift; break;;
       -*)   echo "$0: unknown command line option: $1" >&2; exit 1;;
       *)    if [ $# -eq 1 ]; then
                 if [ -r $1 ]; then
                     CFGOPT="$1"
                 else
                     echo "$0: \`$1' does not exist or is unreadable" >&2
		     exit 1
                 fi
                 break
	     else
	         echo "$0: too many arguments, try \`$0 help' for more info" >&2
	         exit 1
	     fi;; 
       esac
    done

    IOUTPUT=
    $DAEMON $CFGOPT --dump-macros | 
    while read state rest 
    do
        if [ -z "$IOTPUT" ]; then
	    if [ "$state" != "helo" ]; then
	        $EXPORT helo i
	    else
	        rest="i, $rest"
	    fi
	    IOTPUT=yes
	fi
	$EXPORT $state "$rest"
    done
    exit 0
}

case $1 in
start) mailfromd_start;;
stop)  mailfromd_stop;;
restart)
       mailfromd_stop
       sleep 1
       mailfromd_start;;
status)
       mailfromd_status;;
configtest)
       shift
       mailfromd_configtest $@;;	
macros)
       shift
       mailfromd_macros $@;;
help)  cat <<EOT
usage: $0 COMMAND [OPTIONS]
COMMANDS are:
   start             Start the daemon.
   stop              Stop the running instance of the daemon.
   restart           Restart the daemon.
   status            Display status of the running instance.
   configtest [FILE] Check configuration file syntax.  If FILE is not
                     given, the default one is assumed.
   macros [OPTIONS] [FILE]
                     Generate milter export statements for Sendmail
		     configuration files.  Optional FILE specifies
		     alternative mailfromd configuration file.
		     OPTIONS are:
		       -c, --cf  Generate output, suitable for sendmail.cf
		                 file (by default, \`.mc' format is assumed).
				 
EOT
       ;;
*)     echo "Usage: $0 {start|stop|restart|status|configtest|macros}" >&2
       echo "Try \`$0 help' for more info" >&2
esac

# End of rc.mailfromd