#!/bin/sh
#
#
# /etc/init.d/postgrey
#   and its symbolic link
# /(usr/)sbin/rcpostgrey
#
#
### BEGIN INIT INFO
# Provides:          postgrey
# Required-Start:    $syslog $remote_fs
# Should-Start:      $time ypbind smtp
# Required-Stop:     $syslog $remote_fs
# Should-Stop:       ypbind smtp
# Default-Start:     3 5
# Default-Stop:      0 1 2 6
# Short-Description: postgrey anti spam daemon
# Description:       Start postgrey
### END INIT INFO
# 
# Any extensions to the keywords given above should be preceeded by 
# X-VendorTag- (X-UnitedLinux- X-SuSE- for us) according to LSB.
# 


# Check for missing binaries (stale symlinks should not happen)
# Note: Special treatment of stop for LSB conformance
postgrey=/usr/sbin/postgrey
test -x $postgrey || { echo "$postgrey not installed"; 
	if [ "$1" = "stop" ]; then exit 0;
	else exit 5; fi; }

# Check for existence of needed config file and read it
#POSTGREY_CONFIG=/etc/sysconfig/postgrey
#test -r $POSTGREY_CONFIG || { echo "$POSTGREY_CONFIG not existing";
#	if [ "$1" = "stop" ]; then exit 0;
#	else exit 6; fi; }


. /etc/rc.status
rc_reset

# Return values acc. to LSB for all commands but status:
# 0	  - success
# 1       - generic or unspecified error
# 2       - invalid or excess argument(s)
# 3       - unimplemented feature (e.g. "reload")
# 4       - user had insufficient privileges
# 5       - program is not installed
# 6       - program is not configured
# 7       - program is not running
# 8--199  - reserved (8--99 LSB, 100--149 distrib, 150--199 appl)
# 
# Note that starting an already running service, stopping
# or restarting a not-running service as well as the restart
# with force-reload (in case signaling is not supported) are
# considered a success.


### FIXME: should be there...      . /etc/sysconfig/postgrey
### FIXME: configuration variables are here, for instance...

POSTGREY_TEXT="You_are_greylisted_for_30s__http://en.wikipedia.org/wiki/Greylisting"
PIDFILE=/var/run/postgrey.pid
POSTGREY_OPTS="--pidfile=$PIDFILE --daemonize $POSTGREY_OPTS --unix=/var/lib/postgrey/postgrey.socket --delay=120 --auto-whitelist-clients=1 --listen-queue-size=32 --greylist-text=$POSTGREY_TEXT --max-age=365"


case "$1" in
    start)
	echo -n "Starting postgrey "
	## Start daemon with startproc(8). If this fails
	## the return value is set appropriately by startproc.
	/sbin/startproc $postgrey $POSTGREY_OPTS

	# Remember status and be verbose
	rc_status -v
	;;
    stop)
	echo -n "Shutting down postgrey "
	## Stop daemon with killproc(8) and if this fails
	## killproc sets the return value according to LSB.

	/sbin/killproc -p $PIDFILE $postgrey

	# Remember status and be verbose
	rc_status -v
	;;
    try-restart|condrestart)
	## Do a restart only if the service was active before.
	## Note: try-restart is now part of LSB (as of 1.9).
	## RH has a similar command named condrestart.
	if test "$1" = "condrestart"; then
		echo "${attn} Use try-restart ${done}(LSB)${attn} rather than condrestart ${warn}(RH)${norm}"
	fi
	$0 status
	if test $? = 0; then
		$0 restart
	else
		rc_reset	# Not running is not a failure.
	fi
	# Remember status and be quiet
	rc_status
	;;
    restart)
	## Stop the service and regardless of whether it was
	## running or not, start it again.
	$0 stop
	$0 start

	# Remember status and be quiet
	rc_status
	;;
    force-reload)
	## Signal the daemon to reload its config. Most daemons
	## do this on signal 1 (SIGHUP).
	## If it does not support it, restart the service if it
	## is running.

	echo -n "Reload service postgrey "
	## if it supports it:
	/sbin/killproc -HUP $postgrey
	#touch /var/run/postgrey.pid
	rc_status -v

	## Otherwise:
	#$0 try-restart
	#rc_status
	;;
    reload)
	## Like force-reload, but if daemon does not support
	## signaling, do nothing (!)

	# If it supports signaling:
	echo -n "Reload service postgrey "
	/sbin/killproc -HUP $postgrey
	#touch /var/run/postgrey.pid
	rc_status -v
	
	## Otherwise if it does not support reload:
	#rc_failed 3
	#rc_status -v
	;;
    status)
	echo -n "Checking for service postgrey "
	## Check status with checkproc(8), if process is running
	## checkproc will return with exit status 0.

	# Return value is slightly different for the status command:
	# 0 - service up and running
	# 1 - service dead, but /var/run/  pid  file exists
	# 2 - service dead, but /var/lock/ lock file exists
	# 3 - service not running (unused)
	# 4 - service status unknown :-(
	# 5--199 reserved (5--99 LSB, 100--149 distro, 150--199 appl.)
	
	# NOTE: checkproc returns LSB compliant status values.
	/sbin/checkproc $postgrey
	# NOTE: rc_status knows that we called this init script with
	# "status" option and adapts its messages accordingly.
	rc_status -v
	;;
    probe)
	## Optional: Probe for the necessity of a reload, print out the
	## argument to this init script which is required for a reload.
	## Note: probe is not (yet) part of LSB (as of 1.9)

	test /etc/postgrey/postgrey.conf -nt /var/run/postgrey.pid && echo reload
	;;
    *)
	echo "Usage: $0 {start|stop|status|try-restart|restart|force-reload|reload|probe}"
	exit 1
	;;
esac
rc_exit
