#!/bin/sh
#
# Inspiration stolen from the fetchmail* packages. Thanks Henrique!
#
#

set -e

case "$1" in
	configure)
		# create system dhcpd user and group
		adduser --system --quiet --no-create-home --home /var/run --group dhcpd
		# create ddns keys directory
		if [ ! -e /etc/dhcp/ddns-keys/ ]; then
			mkdir -m 750 /etc/dhcp/ddns-keys/
			chown root:dhcpd /etc/dhcp/ddns-keys/
		fi
		;;

	abort-upgrade|abort-remove|abort-deconfigure)
		exit 0
		;;

	*)
		echo "postinst called with unknown argument \`$1'" >&2
		exit 0
		;;
esac

# Handle debconf
. /usr/share/debconf/confmodule

INITCONFFILE="/etc/default/isc-dhcp-server"

# We generate several files during the postinst, and we don't want
#	them to be readable only by root.
umask 022

# Generate configuration file if it does not exist, using default values.
[ -r "${INITCONFFILE}" ] || {
	echo Generating ${INITCONFFILE}... >&2
	cat >${INITCONFFILE} <<'EOFMAGICNUMBER1234'
# Defaults for isc-dhcp-server (sourced by /etc/init.d/isc-dhcp-server)

# Path to dhcpd's config file (default: /etc/dhcp/dhcpd.conf).
#DHCPDv4_CONF=/etc/dhcp/dhcpd.conf
#DHCPDv6_CONF=/etc/dhcp/dhcpd6.conf

# Path to dhcpd's PID file (default: /var/run/dhcpd.pid).
#DHCPDv4_PID=/var/run/dhcpd.pid
#DHCPDv6_PID=/var/run/dhcpd6.pid

# Additional options to start dhcpd with.
#	Don't use options -cf or -pf here; use DHCPD_CONF/ DHCPD_PID instead
#OPTIONS=""

# On what interfaces should the DHCP server (dhcpd) serve DHCP requests?
#	Separate multiple interfaces with spaces, e.g. "eth0 eth1".
INTERFACESv4=""
INTERFACESv6=""
EOFMAGICNUMBER1234
}

# ------------------------- Debconf questions start ---------------------

db_get isc-dhcp-server/interfaces || true
INTERFACESv4="${RET}"

if [ -n "$INTERFACESv4" ]; then
    TMPFILE="$(mktemp -q ${INITCONFFILE}.new.XXXXXX)"
    sed -e "s,^[[:space:]]*INTERFACESv4[[:space:]]*=.*,INTERFACESv4=\"${INTERFACESv4}\"," \
		<${INITCONFFILE} >${TMPFILE}
    cp ${TMPFILE} ${INITCONFFILE}
    rm ${TMPFILE}
fi

# ------------------------- Debconf questions end ---------------------
db_stop

test ! -x /sbin/restorecon || restorecon /var/lib/dhcp/dhcpd.leases

# Automatically added by dh_apparmor/3.0.4-2ubuntu2.2
if [ "$1" = "configure" ]; then
    APP_PROFILE="/etc/apparmor.d/usr.sbin.dhcpd"
    if [ -f "$APP_PROFILE" ]; then
        # Add the local/ include
        LOCAL_APP_PROFILE="/etc/apparmor.d/local/usr.sbin.dhcpd"

        test -e "$LOCAL_APP_PROFILE" || {
            mkdir -p `dirname "$LOCAL_APP_PROFILE"`
            install --mode 644 /dev/null "$LOCAL_APP_PROFILE"
        }

        # Reload the profile, including any abstraction updates
        if aa-enabled --quiet 2>/dev/null; then
            apparmor_parser -r -T -W "$APP_PROFILE" || true
        fi
    fi
fi
# End automatically added section
# Automatically added by dh_systemd_enable/13.6ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	# This will only remove masks created by d-s-h on package removal.
	deb-systemd-helper unmask 'isc-dhcp-server.service' >/dev/null || true

	# was-enabled defaults to true, so new installations run enable.
	if deb-systemd-helper --quiet was-enabled 'isc-dhcp-server.service'; then
		# Enables the unit on first installation, creates new
		# symlinks on upgrades if the unit file has changed.
		deb-systemd-helper enable 'isc-dhcp-server.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 'isc-dhcp-server.service' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_systemd_enable/13.6ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	# This will only remove masks created by d-s-h on package removal.
	deb-systemd-helper unmask 'isc-dhcp-server.service' >/dev/null || true

	# was-enabled defaults to true, so new installations run enable.
	if deb-systemd-helper --quiet was-enabled 'isc-dhcp-server.service'; then
		# Enables the unit on first installation, creates new
		# symlinks on upgrades if the unit file has changed.
		deb-systemd-helper enable 'isc-dhcp-server.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 'isc-dhcp-server.service' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_systemd_enable/13.6ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	# This will only remove masks created by d-s-h on package removal.
	deb-systemd-helper unmask 'isc-dhcp-server6.service' >/dev/null || true

	# was-enabled defaults to true, so new installations run enable.
	if deb-systemd-helper --quiet was-enabled 'isc-dhcp-server6.service'; then
		# Enables the unit on first installation, creates new
		# symlinks on upgrades if the unit file has changed.
		deb-systemd-helper enable 'isc-dhcp-server6.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 'isc-dhcp-server6.service' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_systemd_start/13.6ubuntu1
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
		deb-systemd-invoke start 'isc-dhcp-server6.service' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_installinit/13.6ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -z "${DPKG_ROOT:-}" ] && [ -x "/etc/init.d/isc-dhcp-server" ]; then
		update-rc.d isc-dhcp-server defaults >/dev/null
		if [ -n "$2" ]; then
			_dh_action=restart
		else
			_dh_action=start
		fi
		invoke-rc.d isc-dhcp-server $_dh_action || exit 1
	fi
fi
# End automatically added section


exit 0