#!/bin/bash
###############################################################################
#                                                                             #
# IPFire.org - A linux based firewall                                         #
# Copyright (C) 2015  IPFire Network Development Team                         #
#                                                                             #
# 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/>.       #
#                                                                             #
###############################################################################

TRIGGER_ACTIONS="init up down online"

trigger_execute() {
	local trigger="$1"
	shift

	local environment=$@

	if [ ! -x "${trigger}" ]; then
		log WARNING "Trigger is not executable: ${trigger}"
		return ${EXIT_ERROR}
	fi

	log DEBUG "Executing trigger ${trigger}..."
	cmd ${environment} "${trigger}" &>/dev/null
	local ret=${?}

	if [ ${ret} -ne ${EXIT_OK} ]; then
		log WARNING "Trigger ${trigger} exited with exit code: ${ret}"
		log WARNING "  Environment: ${environment}"
	fi

	return ${ret}
}

triggers_execute_all() {
	local action="${1}"
	shift

	# Check if the action is valid
	assert list_match "${action}" ${TRIGGER_ACTIONS}

	local environment=$@

	# Check if the directory exists
	[ -d "${NETWORK_TRIGGERS_DIR}" ] || return ${EXIT_ERROR}

	local trigger
	for trigger in ${NETWORK_TRIGGERS_DIR}/*; do
		# Check if the trigger can be executed
		if [ ! -x "${trigger}" ]; then
			log DEBUG "Trigger is not executable: ${trigger}"
			continue
		fi

		# Execute the trigger
		trigger_execute "${trigger}" ${environment} ACTION="${action}"
	done

	return ${EXIT_OK}
}