#!/bin/bash
#
# qpsmtpd package debconf configuration script
#

set -e

ENABLED=""
INTERFACES=""
QUEUE_PLUGIN=""
QUEUE_MAILDIR_DESTINATION=""
QUEUE_NONE_CONFIRM=""
QUEUE_PROXY_DESTINATION=""
RCPTHOSTS=""

. /usr/share/debconf/confmodule
db_version 2.0

db_beginblock
db_input medium qpsmtpd/startup_enabled || true
db_endblock
db_go

db_get qpsmtpd/startup_enabled
ENABLED="$RET"

if [ "$ENABLED" = "true" ] ; then
	db_get qpsmtpd/listen_interfaces
	INTERFACES="$RET"

	if [ "$INTERFACES" = "unset" -o -z "$INTERFACES" ] ; then
		INTERFACES=$(ifconfig -a |
			grep 'inet addr' |
			tr : ' ' |
			awk '{print $3}' |
			sort | uniq |
			tr '\n' ' ' |
            sed 's/  *$//')
	fi
	db_set qpsmtpd/listen_interfaces "$INTERFACES"

	db_beginblock
	db_input medium qpsmtpd/listen_interfaces || true
	db_endblock
	db_go
	db_get qpsmtpd/listen_interfaces
	INTERFACES="$RET"

	# try to guess the local MTA, to select defaults
	if ( readlink /usr/sbin/sendmail 2>/dev/null | grep -q exim ) ; then
		LOCAL_MTA=exim
	elif [ -e /var/spool/postfix/public/cleanup ] ; then
		LOCAL_MTA=postfix
	elif [ -x /usr/sbin/qmail-queue -o -x /var/qmail/bin/qmail-queue ] ; then
		LOCAL_MTA=qmail
	fi

	# loop until we get to an acceptable state (e.g. confirmed queue-none)
	db_get qpsmtpd/queue_plugin
	QUEUE_PLUGIN="$RET"
	# echo "initial queue_plugin=$QUEUE_PLUGIN"
	# echo "none_confirm=$QUEUE_NONE_CONFIRM"

	iter=0
	while [[ ( "$iter" == "0" ) ||
		 ( "x$QUEUE_PLUGIN" == "" ) ||
 	         ( "x$QUEUE_PLUGIN" == "xnone" &&
		   "x$QUEUE_NONE_CONFIRM" != "xtrue" ) ]] ; do
		iter=1
		# echo "loop queue_plugin=$QUEUE_PLUGIN"
		if [ "x$QUEUE_PLUGIN" = "x" ] ; then
			QUEUE_PLUGIN="$LOCAL_MTA"
			[ ! -z "$QUEUE_PLUGIN" ] && db_set qpsmtpd/queue_plugin "$QUEUE_PLUGIN"
		fi
		db_beginblock
		db_input medium qpsmtpd/queue_plugin || true
		db_endblock
		db_go

		db_get qpsmtpd/queue_plugin
		QUEUE_PLUGIN="$RET"
		if [ "x$QUEUE_PLUGIN" = "xproxy" ] ; then
			db_beginblock
			db_input medium qpsmtpd/queue_smtp_proxy_destination || true
			db_endblock
			db_go

			db_get qpsmtpd/queue_smtp_proxy_destination
			QUEUE_PROXY_DESTINATION="$RET"
			if [ "x$QUEUE_PROXY_DESTINATION" = "x" ] ; then
				QUEUE_PROXY_DESTINATION="localhost"
			fi
		elif [ "x$QUEUE_PLUGIN" = "xmaildir" ] ; then
			db_beginblock
			db_input medium qpsmtpd/queue_maildir_destination || true
			db_endblock
			db_go

			db_get qpsmtpd/queue_maildir_destination
			QUEUE_MAILDIR_DESTINATION="$RET"
			if [ "x$QUEUE_MAILDIR_DESTINATION" = "x" ] ; then
				db_set qpsmtpd/queue_maildir_destination \
					"/var/spool/qpsmtpd/Maildir"
			fi
		elif [ "x$QUEUE_PLUGIN" = "xnone" -o "x$QUEUE_PLUGIN" = "x" ] ; then
			db_beginblock
			db_input high qpsmtpd/queue_none_confirm || true
			db_endblock
			db_go

			db_get qpsmtpd/queue_none_confirm
			QUEUE_NONE_CONFIRM="$RET"
		fi

		db_get qpsmtpd/rcpthosts
		RCPTHOSTS="$RET"
		# if rcpthosts has never been set, try to guess a default
		if [ "x$RCPTHOSTS" = "xunset" ] ; then
			RCPTHOSTS=""
			if [ "x$QUEUE_PLUGIN" = "xexim" ] ; then
				db_get exim4/dc_relay_domains
				EXIM_RELAYDOMAINS=`echo "$RET" | \
					tr ',' ' '`
				db_get exim4/dc_other_hostnames

				EXIM_OTHERHOSTNAMES=`echo "$RET" | \
					tr ',' ' '`
				db_get exim4/dc_relay_domains
				RCPTHOSTS=`echo "$EXIM_RELAYDOMAINS $EXIM_OTHERHOSTNAMES" | sed 's/ $//'`
			elif [ "x$QUEUE_PLUGIN" = "xpostfix" ] ; then
				RCPTHOSTS=`postconf -h mydestination 2>/dev/null |
					perl -pe 's/[,\s]+/ /g' | uniq`
			elif [ "x$QUEUE_PLUGIN" = "xqmail" ] ; then
				for qetc in /etc/qmail /var/qmail/control ; do
					if [ -e "$qetc/rcpthosts" ] ; then
					RCPTHOSTS=`cat $qetc/rcpthosts |
						   grep '^[a-zA-Z0-9-.]' |
						   tr '\n' ' '`
					fi
				done
			fi
			db_set qpsmtpd/rcpthosts "$RCPTHOSTS"
		fi
			
		db_beginblock
		db_input medium qpsmtpd/rcpthosts || true
		db_endblock
		db_go
		db_get qpsmtpd/rcpthosts
		RCPTHOSTS="$RET"

        db_beginblock
        db_input medium qpsmtpd/server_type || true
        db_endblock
        db_go
        db_get qpsmtpd/server_type
        SERVER="$RET"
	done
fi

db_stop

exit 0