#!/bin/sh
# $OpenBSD: INSTALL,v 1.3 2004/07/26 10:56:01 peter Exp $
#
# Pre/post-installation setup of exim

# use a sane path and install prefix
#
PATH=/bin:/usr/bin:/sbin:/usr/sbin
PREFIX=${PKG_PREFIX:-/usr/local}
CONFIG_DIR=${SYSCONFDIR}/exim
SAMPLE_CONFIG_DIR=$PREFIX/share/examples/exim

EXIMSPOOL=/var/spool/exim
EXIM=_exim
ID=521

# add user/group _exim if they don't already exist
do_accts()
{
	echo
	echo "+---------------------"

	groupinfo -e $EXIM
	if [ $? -eq 0 ]; then
		echo "| Using existing group '$EXIM'"
	else
		echo "| Creating group '$EXIM'"
		groupadd -g $ID $EXIM
	fi

	userinfo -e $EXIM
	if [ $? -eq 0 ]; then
		echo "| Using existing account '$EXIM'"
	else
		echo "| Creating user '$EXIM'"
		if [ -d $EXIMSPOOL ]; then
			EXIMCREATEHOME=""
		else
			EXIMCREATEHOME="-m"
		fi
		useradd -g $EXIM \
			-c "$1 Account" \
			$EXIMCREATEHOME -d $EXIMSPOOL \
			-L daemon \
			-u $ID $EXIM
	fi

	echo "+---------------------"
	echo
}

# Function: tell the user what they need to do to use the port just installed
#
do_notice()
{
	echo
	echo "+---------------"
	echo "| If you intend replacing sendmail with exim, then don't"
	echo "| forget to modify /etc/mailer.conf accordingly; see"
	echo "| mailwrapper(8)."
}

# Function: install configuration files
#
do_install_conf()
{
	install -d -o root -g wheel ${CONFIG_DIR}
	install -o root -g wheel ${SAMPLE_CONFIG_DIR}/configure \
		${CONFIG_DIR}/configure
	echo "| "
	echo "| A default $1 configuration file has been installed"
	echo "| in ${CONFIG_DIR}."
	echo "|"
	echo "| Please review this file and change the configuration"
	echo "| to meet your needs."
	echo "+---------------"
	echo
}

# Function: tell the user what they need to do to use the port just installed
#
do_notice_conf()
{
	echo "| "
	echo "| The existing $1 configuration files in ${CONFIG_DIR} have NOT"
	echo "| been changed.  You may want to compare them to the current samples"
	echo "| in ${SAMPLE_CONFIG_DIR}, and update your configuration files"
	echo "| as needed."
	echo "|"
	echo "| A perl script may help converting from exim-3.xx config"
	echo "| files and has been installed in"
	echo "|       ${PREFIX}/share/examples/exim/convert4r4"
	echo "+---------------"
	echo
}

# Verify proper execution
#
if [ $# -ne 2 ]; then
	echo "usage: $0 distname { PRE-INSTALL | POST-INSTALL }" >&2
	exit 1
fi

# Verify/process the command
#
case $2 in
	PRE-INSTALL)
		do_accts $1
		;;
	POST-INSTALL)
		do_notice "$1"
		if [ ! -d ${CONFIG_DIR} ]; then
		    do_install_conf "$1"
		elif [ ! -f ${CONFIG_DIR}/configure ]; then
		    do_install_conf "$1"
		else
		    do_notice_conf "$1"
		fi
		;;
	*)
		echo "usage: $0 distname { PRE-INSTALL | POST-INSTALL }" >&2
		exit 1
		;;
esac

exit 0