#!/bin/sh
# piston's script for dhcp-probe
#
# see: dh_installdeb(1)

set -e

# summary of how this script can be called:
#        * <postinst> `configure' <most-recently-configured-version>
#        * <old-postinst> `abort-upgrade' <new version>
#        * <conflictor's-postinst> `abort-remove' `in-favour' <package>
#          <new-version>
#        * <postinst> `abort-remove'
#        * <deconfigured's-postinst> `abort-deconfigure' `in-favour'
#          <failed-install-package> <version> `removing'
#          <conflicting-package> <version>
# for details, see http://www.debian.org/doc/debian-policy/ or
# the debian-policy package


PACKAGE="dhcp-probe"
CONF_DIR="/etc/$PACKAGE"
CONF_FILE="/etc/dhcp_probe.cf"

MSG="dhcp-probe: IP not configured on host, please see template file"
MSG="$MSG /usr/share/doc/dhcp-probe/dhcp_probe.tpl.eth0 to configure !"

#
# Dynamic configuration procedure
#
if test -f /lib/lsb/init-functions
then
	. /lib/lsb/init-functions
fi

#
# postinst script main
#
case "$1" in
    configure)
			DEST="/etc/$PACKAGE/$PACKAGE"
			if [ -z "$(ls "$CONF_DIR")" ]
			then # Configuration doesn't exist
				ip address | awk '
					/^[0-9]*:/ {
						iface=$2
						sub(/:/, "", iface)
						ether=""
						inet=0
					}
					/link\/ether/ {
						ether=$2
					}
					/inet / && !inet {
						inet=$2
						sub(/\/.*/, "", inet)
						if(iface && ether && inet) {
							print iface
							print ether
							print inet
						}
					}
				' | while read -r i && read -r ether && read -r inet; do
					TMPDEST=$(mktemp -t "$PACKAGE.$i.XXXXXXXX")
					{
						echo "#"
						echo "# Automaticaly generated file during dhcp-probe package install procedure"
						echo "#"
						echo "INTERFACE=\"$i\""
						echo "MAC=\"$ether\""
						echo "IPV4=\"$inet\""
					} > "$TMPDEST"
					ucf "$TMPDEST" "$DEST.$i"
					logger -i -p daemon.crit "$TMPDEST installed."
					rm -f "$TMPDEST"
				done
			fi
			if test ! -f "$CONF_FILE"; then
				DHCP_PROBE_CF=$(mktemp -t $PACKAGE.XXXXXXXX)
				ucf "$DHCP_PROBE_CF" "$CONF_FILE"
				rm -f "$DHCP_PROBE_CF"
			fi
    ;;

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

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

# Automatically added by dh_installinit/13.23
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -z "${DPKG_ROOT:-}" ] && [ -x "/etc/init.d/dhcp-probe" ]; then
		update-rc.d dhcp-probe defaults >/dev/null
		if [ -n "$2" ]; then
			_dh_action=restart
		else
			_dh_action=start
		fi
		invoke-rc.d --skip-systemd-native dhcp-probe $_dh_action || exit 1
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.23
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 'dhcp-probe.service' >/dev/null || true

	# was-enabled defaults to true, so new installations run enable.
	if deb-systemd-helper --quiet was-enabled 'dhcp-probe.service'; then
		# Enables the unit on first installation, creates new
		# symlinks on upgrades if the unit file has changed.
		deb-systemd-helper enable 'dhcp-probe.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 'dhcp-probe.service' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.23
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 'dhcp-probe.service' >/dev/null || true
	fi
fi
# End automatically added section


exit 0