#!/bin/sh

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

USER=courier
GROUP=courier

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

# Create a dpkg-statoverride delete function.  This can be removed in forky+1.
del_override() {
    if dpkg-statoverride --list $1 >/dev/null; then
        dpkg-statoverride --remove $1
    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 [ "$RET" = true ]; then
        for dir in esmtpacceptmailfor.dir; do
            mkdir -p /etc/courier/$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

    # Remove the obsolete dpkg-statoverrides.  These lines can be removed in forky+1.
    del_override /etc/courier/aliasdir
    del_override /etc/courier/aliases
    del_override /etc/courier/aliases/system
    del_override /etc/courier/esmtpauthclient
    del_override /etc/courier/esmtpd.cnf
    del_override /etc/courier/filters
    del_override /etc/courier/filters/active
    del_override /usr/bin/cancelmsg
    del_override /usr/bin/mailq
    del_override /usr/lib/courier/courier/submitmkdir
    del_override /usr/sbin/rmail
    del_override /usr/sbin/sendmail
    del_override /var/lib/courier/allfilters
    del_override /var/lib/courier/filters
    del_override /var/lib/courier/msgq
    del_override /var/lib/courier/msgs
    del_override /var/lib/courier/tmp
    del_override /var/lib/courier/track
fi

# Automatically added by dh_installtmpfiles/14.3
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	systemd-tmpfiles ${DPKG_ROOT:+--root="$DPKG_ROOT"} --create courier-mta.conf
fi
# End automatically added section
# Automatically added by dh_installinit/14.3
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -x "$DPKG_ROOT/etc/init.d/courier" ]; then
		update-rc.d courier defaults >/dev/null
		if [ -n "$2" ]; then
			_dh_action=restart
		else
			_dh_action=start
		fi
		if [ -z "$DPKG_ROOT" ]; then
			invoke-rc.d --skip-systemd-native courier $_dh_action || exit 1
		fi
	fi
fi
# End automatically added section
# Automatically added by dh_installinit/14.3
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -x "$DPKG_ROOT/etc/init.d/courierfilter" ]; then
		update-rc.d courierfilter defaults >/dev/null
		if [ -n "$2" ]; then
			_dh_action=restart
		else
			_dh_action=start
		fi
		if [ -z "$DPKG_ROOT" ]; then
			invoke-rc.d --skip-systemd-native courierfilter $_dh_action || exit 1
		fi
	fi
fi
# End automatically added section
# Automatically added by dh_installinit/14.3
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -x "$DPKG_ROOT/etc/init.d/courier-mta" ]; then
		update-rc.d courier-mta defaults >/dev/null
		if [ -n "$2" ]; then
			_dh_action=restart
		else
			_dh_action=start
		fi
		if [ -z "$DPKG_ROOT" ]; then
			invoke-rc.d --skip-systemd-native courier-mta $_dh_action || exit 1
		fi
	fi
fi
# End automatically added section
# Automatically added by dh_installinit/14.3
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -x "$DPKG_ROOT/etc/init.d/courier-mta-ssl" ]; then
		update-rc.d courier-mta-ssl defaults >/dev/null
		if [ -n "$2" ]; then
			_dh_action=restart
		else
			_dh_action=start
		fi
		if [ -z "$DPKG_ROOT" ]; then
			invoke-rc.d --skip-systemd-native courier-mta-ssl $_dh_action || exit 1
		fi
	fi
fi
# End automatically added section
# Automatically added by dh_installinit/14.3
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -x "$DPKG_ROOT/etc/init.d/courier-msa" ]; then
		update-rc.d courier-msa defaults >/dev/null
		if [ -n "$2" ]; then
			_dh_action=restart
		else
			_dh_action=start
		fi
		if [ -z "$DPKG_ROOT" ]; then
			invoke-rc.d --skip-systemd-native courier-msa $_dh_action || exit 1
		fi
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/14.3
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/14.3
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -z "$DPKG_ROOT" ] && [ -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/14.3
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/14.3
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -z "$DPKG_ROOT" ] && [ -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/14.3
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/14.3
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -z "$DPKG_ROOT" ] && [ -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/14.3
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/14.3
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -z "$DPKG_ROOT" ] && [ -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/14.3
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/14.3
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -z "$DPKG_ROOT" ] && [ -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