#!/bin/sh
#
# Post-installation setup of postfix

PATH=/bin:/usr/bin:/sbin:/usr/sbin
CONFIG_DIR=${SYSCONFDIR}/postfix
SAMPLE_CONFIG_DIR=${PREFIX}/share/examples/postfix
SPOOL_DIR=/var/spool/postfix
DATA_DIR=/var/postfix

# Function: set up the postfix spool dir / chroot area
#
do_spooldir()
{
    echo "-> Creating Postfix spool directory and chroot area under $SPOOL_DIR"
    [ -d $SPOOL_DIR ] || install -d -o root -g wheel -m 755 $SPOOL_DIR
    [ -d $SPOOL_DIR/etc ] || install -d -o root -g wheel -m 755 $SPOOL_DIR/etc
    [ -d $SPOOL_DIR/dev ] || install -d -o root -g wheel -m 755 $SPOOL_DIR/dev
    for file in hosts localtime resolv.conf services ; do
	install -o root -g wheel -m 644 /etc/$file $SPOOL_DIR/etc
    done

    echo "-> Creating Postfix data directory under $DATA_DIR"
    [ -d $DATA_DIR ] || install -d -o _postfix -g wheel -m 700 $DATA_DIR
}

# Function: replace sendmail binaries with postfix
#
do_mailwrapper()
{
    echo "-> Creating /etc/mailer.conf.postfix"
    cat <<MAILER  | sed "s@y0y0y0@$PREFIX@g" >/etc/mailer.conf.postfix
sendmail	y0y0y0/sbin/sendmail
send-mail	y0y0y0/sbin/sendmail
mailq		y0y0y0/sbin/sendmail
newaliases	y0y0y0/sbin/sendmail
MAILER
    chown root:wheel /etc/mailer.conf.postfix
    chmod 644 /etc/mailer.conf.postfix
}

# Function: install the postfix configuration files from the samples
#
do_configs()
{
    POSTFIX="${PREFIX}/sbin/postfix"

    if [ -d $CONFIG_DIR ]; then
	if [ ! -d $CONFIG_DIR/postfix-files.d ]; then
	    install -d -o root -g wheel -m 755 $CONFIG_DIR/postfix-files.d
	fi
	for file in main.cf.proto master.cf.proto postfix-files ; do
	    if [ ! -f $CONFIG_DIR/$file ]; then
		install -o root -g wheel -m 644 $SAMPLE_CONFIG_DIR/$file $CONFIG_DIR
	    fi
	done

	echo ""
	$POSTFIX upgrade-configuration
	echo ""

	echo "+---------------"
	echo "| The existing configuration files in $CONFIG_DIR have been preserved."
	echo "| You may want to compare them to the current sample files,"
	echo "| $SAMPLE_CONFIG_DIR, and update your configuration as needed."
	echo "+---------------"
	echo ""
    else
	install -d -o root -g wheel -m 755 $CONFIG_DIR
	install -d -o root -g wheel -m 755 $CONFIG_DIR/postfix-files.d
	install -o root -g wheel -m 644 $SAMPLE_CONFIG_DIR/* $CONFIG_DIR

	echo "+---------------"
	echo "| Configuration files have been installed in $CONFIG_DIR."
	echo "| Please update these files to meet your needs."
	echo "+---------------"
    fi

    $POSTFIX set-permissions
    $POSTFIX check
}

if [ "$1" = "install" ]; then
    do_mailwrapper
    do_spooldir
fi
do_configs
