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#!/bin/sh

# container-tools - Manage systemd-nspawn containers
# Copyright (C) 2014-2017 Daniel Baumann <daniel.baumann@open-infrastructure.net>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

set -e

SOFTWARE="container-tools"
PROGRAM="container"
export SOFTWARE PROGRAM

HOOKS="/etc/${SOFTWARE}/hooks"

# Parameter
PARAMETER="${1}"

if [ -z "${PARAMETER}" ]
then
	echo "Usage: ${PROGRAM} COMMAND [OPTIONS]" >&2
	exit 1
fi

# Command
COMMAND="${1}"
export COMMAND

if [ ! -e "/usr/lib/${SOFTWARE}/${PROGRAM}/${COMMAND}" ]
then
	echo "'${COMMAND}': no such ${PROGRAM} command" >&2
	exit 1
fi

# Options
shift 1
OPTIONS="${@}"
export OPTIONS

# Pre hooks
for FILE in "${HOOKS}/pre-${PROGRAM}".* "${HOOKS}/${NAME}.pre-${PROGRAM}"
do
	if [ -x "${FILE}" ]
	then
		"${FILE}"
	fi
done

# Notification
if echo "${OPTIONS}" | grep -qs "\--no-notification"
then
	OPTIONS="$(echo "${OPTIONS}" | sed -e 's|--no-notification||')"
else
	case "${COMMAND}" in
		create|remove|rm|restart|start|stop)
			USER="${SUDO_USER:-${USER}}"
			DATE="$(date +%Y-%m-%d\ %H:%M:%S)"
			HOST="$(hostname -f)"

			# logfile
			echo "${DATE} ${HOST} ${USER} ${PROGRAM} ${COMMAND} ${OPTIONS}" >> "/var/log/${SOFTWARE}/${PROGRAM}.log"

			# irc
			if  [ -e /usr/bin/irk ] && [ -e "/etc/default/${SOFTWARE}" ]
			then
				. /etc/default/${SOFTWARE}

				if [ -n "${IRK_TARGETS}" ]
				then
					for TARGET in ${IRK_TARGETS}
					do
						irk ${TARGET} "\x0300${USER}\x03@\x0312${HOST}:\x03 \x0303${PROGRAM}\x03 \x0307${COMMAND}\x03 ${OPTIONS}"
					done
				fi
			fi
			;;
	esac
fi

# Run
exec "/usr/lib/${SOFTWARE}/${PROGRAM}/${COMMAND}" "${OPTIONS}"

# Post hooks
for FILE in "${HOOKS}/post-${PROGRAM}".* "${HOOKS}/${NAME}.post-${PROGRAM}"
do
	if [ -x "${FILE}" ]
	then
		"${FILE}"
	fi
done