#!/bin/sh -e

CONFIG=/etc/dbmail/dbmail.conf
CONFIG_EX=/usr/share/doc/dbmail/examples/dbmail.conf

DEBIAN_CONFIG=/etc/default/dbmail
DEBIAN_CONFIG_EX=/usr/share/doc/dbmail/examples/default.dbmail

test $DEBIAN_SCRIPT_DEBUG && set -v -x

# summary of how this script can be called:
#        * <postinst> `configure' <most-recently-configured-version>
#        * <old-postinst> `abort-upgrade' <new version>
#        * <conflictor's-postinst> `abort-remove' `in-favour' <package>
#          <new-version>
#        * <deconfigured's-postinst> `abort-deconfigure' `in-favour'
#          <failed-install-package> <version> `removing'
#          <conflicting-package> <version>
# for details, see /usr/doc/packaging-manual/
#
# quoting from the policy:
#     Any necessary prompting should almost always be confined to the
#     post-installation script, and should be protected with a conditional
#     so that unnecessary prompting doesn't happen if a package's
#     installation fails and the `postinst' is called with `abort-upgrade',
#     `abort-remove' or `abort-deconfigure'.


case "$1" in
    install)
    ;;
    upgrade)
    ;;
    configure)

	. /usr/share/debconf/confmodule
	db_get dbmail/do_debconf || true; DO_DEBCONF=$RET
	
	if [ "$DO_DEBCONF" = "true" ]; then
		# fetch debconf values
		db_get dbmail/dbmail/host || true; DB_HOST=$RET
		db_get dbmail/dbmail/db || true; DB_DATABASE=$RET
		db_get dbmail/dbmail/user || true; DB_USER=$RET
		db_get dbmail/dbmail/pass || true; DB_PASS=$RET
		
		db_get dbmail/smtp/DBMAIL_FROM_ADDRESS || true; DBMAIL_FROM_ADDRESS=$RET
		db_get dbmail/smtp/POSTMASTER || true; POSTMASTER=$RET
	
		db_get dbmail/start_imapd || true; START_IMAPD=$RET
		db_get dbmail/start_pop3d || true; START_POP3D=$RET
	
		db_get dbmail/start_ssl || true; START_SSL=$RET
		db_get dbmail/pem_file || true; PEM_FILE=$RET
	
	fi
	
	# protect the config-file
	oldmask=`umask`
	umask 026
	
	gunzip ${CONFIG_EX}.gz 2>/dev/null || true
	gunzip ${DEBIAN_CONFIG_EX}.gz 2>/dev/null || true
	
	ucf --debconf-ok $CONFIG_EX $CONFIG
	ucf --debconf-ok $DEBIAN_CONFIG_EX $DEBIAN_CONFIG
		
	if [ "$DO_DEBCONF" = "true" ]; then
		# edit the configs
		cat $CONFIG | sed -re "s/^host=.*\$/host=$DB_HOST/" \
			-e "s/^user=.*\$/user=$DB_USER/" \
			-e "s/^pass=.*\$/pass=$DB_PASS/" \
			-e "s/^db=.*\$/db=$DB_DATABASE/" \
                	-e "s/^DBMAIL_FROM_ADDRESS=.*\$/DBMAIL_FROM_ADDRESS=$DBMAIL_FROM_ADDRESS/" \
                	-e "s/^POSTMASTER=.*\$/POSTMASTER=$POSTMASTER/" \
			-e "s/^EFFECTIVE_USER=\w+/EFFECTIVE_USER=dbmail/g" \
			-e "s/^EFFECTIVE_GROUP=\w+/EFFECTIVE_GROUP=dbmail/g" \
                        > $CONFIG.tmp && mv $CONFIG.tmp $CONFIG
		
		umask $oldmask
	
		if [ "$START_IMAPD" = "true" ]; then
			perl -pi -e 's/^.*START_IMAPD=.*/START_IMAPD=true/' $DEBIAN_CONFIG
		else
			perl -pi -e 's/^.*START_IMAPD=.*/#START_IMAPD=true/' $DEBIAN_CONFIG
		fi
		if [ "$START_POP3D" = "true" ]; then
			perl -pi -e 's/^.*START_POP3D=.*/START_POP3D=true/' $DEBIAN_CONFIG
		else
			perl -pi -e 's/^.*START_POP3D=.*/#START_POP3D=true/' $DEBIAN_CONFIG
		fi
		if [ "$START_SSL" = "true" ]; then
			perl -pi -e 's/^.*START_SSL=.*/START_SSL=true/' $DEBIAN_CONFIG
			perl -pi -e "s/^.*PEM_FILE=.*\$/PEM_FILE=$PEM_FILE/" $DEBIAN_CONFIG
		else
			perl -pi -e 's/^.*START_SSL=.*/#START_SSL=true/' $DEBIAN_CONFIG
			perl -pi -e "s/^.*PEM_FILE=/#PEM_FILE=/" $DEBIAN_CONFIG
		fi
	fi
	
	db_stop
	chown dbmail:dbmail $DEBIAN_CONFIG $CONFIG /usr/sbin/dbmail-smtp
	chmod 0600 $CONFIG
	chmod 4755 /usr/sbin/dbmail-smtp
	
    ;;
    abort-upgrade)
    ;;
    *)
        echo "postinst called with unknown argument \`$1'" >&2
        exit 0
    ;;
esac

#DEBHELPER#

exit 0