#!/bin/sh

# Exit immediately if a command produces an error.
set -e

USER=courier
GROUP=courier

# Source debconf library
. /usr/share/debconf/confmodule

add_override() {
    if ! dpkg-statoverride --list $4 >/dev/null; then
	dpkg-statoverride --update --add $1 $2 $3 $4
    fi
}


if [ "$1" = "configure" ]; then
    # Delete the old diversions if they exist, which are no longer needed.
    # These commands can be removed in trixie +1.
    # See <https://github.com/svarshavchik/courier/issues/56>
    # See also <https://lists.debian.org/debian-mentors/2025/01/msg00219.html>
    if [ -n "$(dpkg-divert --list courier-mta)" ]; then
        dpkg-divert --package courier-mta --remove --rename \
                --divert /usr/bin/addcr.ucspi-tcp /usr/bin/addcr
        dpkg-divert --package courier-mta --remove --rename \
                --divert /usr/share/man/man1/addcr.ucspi-tcp.1.gz /usr/share/man/man1/addcr.1.gz
    fi

    # write default domain file
    db_get courier-mta/defaultdomain
    echo $RET > /etc/courier/defaultdomain

    # generate locals file if necessary
    if [ ! -f /etc/courier/locals ]; then
	echo "localhost" > /etc/courier/locals
        echo "$RET" >> /etc/courier/locals
    fi

    # generate configuration directories if necessary
    db_get courier-base/webadmin-configmode
    if [ "$RET" = true ]; then
	for dir in esmtpacceptmailfor.dir hosteddomains; do
	    mkdir -p /etc/courier/$dir
	    chmod 0750 /etc/courier/$dir
	    chown root:courier /etc/courier/$dir
	done
    fi

    # generate /etc/mailname if necessary
    if [ ! -f /etc/mailname ]; then
	echo "$RET" > /etc/mailname
    fi

    # write file with From: header for delivery notifications
    db_get courier-mta/dsnfrom
    echo $RET > /etc/courier/dsnfrom

    # Update Alternatives
    if [ -f /usr/share/man/man1/lockmail.1.gz ]; then
	LOCKMAIL_SLAVE="--slave /usr/share/man/man1/lockmail.1.gz lockmail.1.gz /usr/share/man/man1/lockmail.courier.1.gz"
    fi
    update-alternatives --install /usr/bin/lockmail lockmail /usr/bin/lockmail.courier 5 ${LOCKMAIL_SLAVE}

    if [ -f /usr/share/man/man1/preline.1.gz ]; then
	PRELINE_SLAVE="--slave /usr/share/man/man1/preline.1.gz preline.1.gz /usr/share/man/man1/preline.courier.1.gz"
    fi
    update-alternatives --install /usr/bin/preline preline /usr/bin/preline.courier 5 ${PRELINE_SLAVE}

    if [ ! -f /etc/courier/esmtpd.pem ]; then
	mkesmtpdcert
	chmod 0640 /etc/courier/esmtpd.pem
	chown root:courier /etc/courier/esmtpd.pem
    fi
    add_override root root 0600 /etc/courier/esmtpd.cnf

    add_override root courier 4755 /usr/sbin/rmail
    add_override courier courier 2755 /usr/bin/mailq
    add_override courier courier 6755 /usr/bin/cancelmsg
    add_override root courier 2755 /usr/sbin/sendmail
    add_override courier courier 4755 /usr/lib/courier/courier/submitmkdir

    for dir in allfilters filters msgq msgs track; do
	add_override courier courier 0750 /var/lib/courier/$dir
    done
    add_override courier courier 0770 /var/lib/courier/tmp

    add_override root courier 0750 /etc/courier/aliasdir
    add_override root courier 0750 /etc/courier/aliases
    add_override root courier 0640 /etc/courier/aliases/system
    add_override root courier 0640 /etc/courier/esmtpauthclient
    add_override root courier 0750 /etc/courier/filters
    add_override root courier 0750 /etc/courier/filters/active

fi

# Automatically added by dh_installtmpfiles/13.24.2
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -x "$(command -v systemd-tmpfiles)" ]; then
		systemd-tmpfiles ${DPKG_ROOT:+--root="$DPKG_ROOT"} --create courier-mta.conf || true
	fi
fi
# End automatically added section
# Automatically added by dh_installinit/13.24.2
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -z "$DPKG_ROOT" ] && [ -x "/etc/init.d/courier" ]; then
		update-rc.d courier defaults >/dev/null
		if [ -n "$2" ]; then
			_dh_action=restart
		else
			_dh_action=start
		fi
		invoke-rc.d --skip-systemd-native courier $_dh_action || exit 1
	fi
fi
# End automatically added section
# Automatically added by dh_installinit/13.24.2
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -z "$DPKG_ROOT" ] && [ -x "/etc/init.d/courierfilter" ]; then
		update-rc.d courierfilter defaults >/dev/null
		if [ -n "$2" ]; then
			_dh_action=restart
		else
			_dh_action=start
		fi
		invoke-rc.d --skip-systemd-native courierfilter $_dh_action || exit 1
	fi
fi
# End automatically added section
# Automatically added by dh_installinit/13.24.2
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -z "$DPKG_ROOT" ] && [ -x "/etc/init.d/courier-mta" ]; then
		update-rc.d courier-mta defaults >/dev/null
		if [ -n "$2" ]; then
			_dh_action=restart
		else
			_dh_action=start
		fi
		invoke-rc.d --skip-systemd-native courier-mta $_dh_action || exit 1
	fi
fi
# End automatically added section
# Automatically added by dh_installinit/13.24.2
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -z "$DPKG_ROOT" ] && [ -x "/etc/init.d/courier-mta-ssl" ]; then
		update-rc.d courier-mta-ssl defaults >/dev/null
		if [ -n "$2" ]; then
			_dh_action=restart
		else
			_dh_action=start
		fi
		invoke-rc.d --skip-systemd-native courier-mta-ssl $_dh_action || exit 1
	fi
fi
# End automatically added section
# Automatically added by dh_installinit/13.24.2
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -z "$DPKG_ROOT" ] && [ -x "/etc/init.d/courier-msa" ]; then
		update-rc.d courier-msa defaults >/dev/null
		if [ -n "$2" ]; then
			_dh_action=restart
		else
			_dh_action=start
		fi
		invoke-rc.d --skip-systemd-native courier-msa $_dh_action || exit 1
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.24.2
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	# The following line should be removed in trixie or trixie+1
	deb-systemd-helper unmask 'courier.service' >/dev/null || true

	# was-enabled defaults to true, so new installations run enable.
	if deb-systemd-helper --quiet was-enabled 'courier.service'; then
		# Enables the unit on first installation, creates new
		# symlinks on upgrades if the unit file has changed.
		deb-systemd-helper enable 'courier.service' >/dev/null || true
	else
		# Update the statefile to add new symlinks (if any), which need to be
		# cleaned up on purge. Also remove old symlinks.
		deb-systemd-helper update-state 'courier.service' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.24.2
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -d /run/systemd/system ]; then
		systemctl --system daemon-reload >/dev/null || true
		if [ -n "$2" ]; then
			_dh_action=restart
		else
			_dh_action=start
		fi
		deb-systemd-invoke $_dh_action 'courier.service' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.24.2
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	# The following line should be removed in trixie or trixie+1
	deb-systemd-helper unmask 'courierfilter.service' >/dev/null || true

	# was-enabled defaults to true, so new installations run enable.
	if deb-systemd-helper --quiet was-enabled 'courierfilter.service'; then
		# Enables the unit on first installation, creates new
		# symlinks on upgrades if the unit file has changed.
		deb-systemd-helper enable 'courierfilter.service' >/dev/null || true
	else
		# Update the statefile to add new symlinks (if any), which need to be
		# cleaned up on purge. Also remove old symlinks.
		deb-systemd-helper update-state 'courierfilter.service' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.24.2
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -d /run/systemd/system ]; then
		systemctl --system daemon-reload >/dev/null || true
		if [ -n "$2" ]; then
			_dh_action=restart
		else
			_dh_action=start
		fi
		deb-systemd-invoke $_dh_action 'courierfilter.service' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.24.2
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	# The following line should be removed in trixie or trixie+1
	deb-systemd-helper unmask 'courier-mta.service' >/dev/null || true

	# was-enabled defaults to true, so new installations run enable.
	if deb-systemd-helper --quiet was-enabled 'courier-mta.service'; then
		# Enables the unit on first installation, creates new
		# symlinks on upgrades if the unit file has changed.
		deb-systemd-helper enable 'courier-mta.service' >/dev/null || true
	else
		# Update the statefile to add new symlinks (if any), which need to be
		# cleaned up on purge. Also remove old symlinks.
		deb-systemd-helper update-state 'courier-mta.service' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.24.2
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -d /run/systemd/system ]; then
		systemctl --system daemon-reload >/dev/null || true
		if [ -n "$2" ]; then
			_dh_action=restart
		else
			_dh_action=start
		fi
		deb-systemd-invoke $_dh_action 'courier-mta.service' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.24.2
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	# The following line should be removed in trixie or trixie+1
	deb-systemd-helper unmask 'courier-mta-ssl.service' >/dev/null || true

	# was-enabled defaults to true, so new installations run enable.
	if deb-systemd-helper --quiet was-enabled 'courier-mta-ssl.service'; then
		# Enables the unit on first installation, creates new
		# symlinks on upgrades if the unit file has changed.
		deb-systemd-helper enable 'courier-mta-ssl.service' >/dev/null || true
	else
		# Update the statefile to add new symlinks (if any), which need to be
		# cleaned up on purge. Also remove old symlinks.
		deb-systemd-helper update-state 'courier-mta-ssl.service' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.24.2
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -d /run/systemd/system ]; then
		systemctl --system daemon-reload >/dev/null || true
		if [ -n "$2" ]; then
			_dh_action=restart
		else
			_dh_action=start
		fi
		deb-systemd-invoke $_dh_action 'courier-mta-ssl.service' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.24.2
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	# The following line should be removed in trixie or trixie+1
	deb-systemd-helper unmask 'courier-msa.service' >/dev/null || true

	# was-enabled defaults to true, so new installations run enable.
	if deb-systemd-helper --quiet was-enabled 'courier-msa.service'; then
		# Enables the unit on first installation, creates new
		# symlinks on upgrades if the unit file has changed.
		deb-systemd-helper enable 'courier-msa.service' >/dev/null || true
	else
		# Update the statefile to add new symlinks (if any), which need to be
		# cleaned up on purge. Also remove old symlinks.
		deb-systemd-helper update-state 'courier-msa.service' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.24.2
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -d /run/systemd/system ]; then
		systemctl --system daemon-reload >/dev/null || true
		if [ -n "$2" ]; then
			_dh_action=restart
		else
			_dh_action=start
		fi
		deb-systemd-invoke $_dh_action 'courier-msa.service' >/dev/null || true
	fi
fi
# End automatically added section


exit 0