#!/bin/sh
#
# Copyright (c) 2022-2023, Jesús Daniel Colmenares Oviedo <DtxdF@disroot.org>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice, this
#   list of conditions and the following disclaimer.
#
# * Redistributions in binary form must reproduce the above copyright notice,
#   this list of conditions and the following disclaimer in the documentation
#   and/or other materials provided with the distribution.
#
# * Neither the name of the copyright holder nor the names of its
#   contributors may be used to endorse or promote products derived from
#   this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

lib_load "${LIBDIR}/check_func"
lib_load "${LIBDIR}/colors"
lib_load "${LIBDIR}/jail"
lib_load "${LIBDIR}/random"

run_desc="Run user-defined stages."

run_main()
{
	local _o
	local jail_name
	local initscript=
	local args=
	local custom_stage=
	local environment=

	while getopts ":i:p:s:V:" _o; do
		case "${_o}" in
			i|p|s|V)
				if lib_check_empty "${OPTARG}"; then
					run_usage
					exit ${EX_USAGE}
				fi
				;;
		esac

		case "${_o}" in
			i)
				initscript="${OPTARG}"
				;;
			p)
				local arg="${OPTARG}"
				arg=`lib_escape_string "${arg}" "" '\"' "-"`

				args="${args} \"${arg}\""
				;;
			s)
				custom_stage="${OPTARG}"
				;;
			V)
				local env_var="${OPTARG}"
				if ! lib_check_var "${env_var}"; then
					lib_err ${EX_DATAERR} "Invalid environment variable '${env_var}'"
				fi

				env_var=`lib_escape_string "${env_var}" "" '\"' "-"`

				environment="${environment} \"${env_var}\""
				;;
			*)
				run_usage
				exit ${EX_USAGE}
				;;
		esac
	done
	shift $((OPTIND-1))

	jail_name="$1"
	if lib_check_empty "${jail_name}"; then
		run_usage
		exit ${EX_USAGE}
	fi

	if ! lib_check_jailname "${jail_name}"; then
		lib_err ${EX_DATAERR} "Invalid jail name \"${jail_name}\""
	fi

	lib_set_logprefix " [`random_color`${jail_name}${COLOR_DEFAULT}]"

	jail_path="${JAILDIR}/${jail_name}"
	if [ ! -d "${jail_path}/jail" ]; then
		lib_err ${EX_NOINPUT} "Cannot find the jail \`${jail_name}\`"
	fi

	if ! lib_jail_exists "${jail_name}"; then
		lib_warn -- "${jail_name} is not running."
		return 0
	fi

	if ! lib_jail_created_by_appjail "${jail_name}"; then
		lib_warn -- "${jail_name} was not been created by appjail."
		return 0
	fi

	initscript="${initscript:-`"${APPJAIL_PROGRAM}" enabled "${jail_name}" run -i`}"
	args="${args:-`"${APPJAIL_PROGRAM}" enabled "${jail_name}" run -p`}"
	environment="${environment:-`"${APPJAIL_PROGRAM}" enabled "${jail_name}" run -V`}"

	if ! lib_check_empty "${environment}"; then
		lib_jail_setenv "${environment}"
	fi

	if lib_check_empty "${initscript}"; then
		initscript="${JAILDIR}/${jail_name}/init"
	fi

	env \
		APPJAIL_CONFIG="${CONFIG}" \
		APPJAIL_JAILDIR="${jail_path}/jail" \
		APPJAIL_JAILNAME="${jail_name}" \
		APPJAIL_ROOTDIR="${jail_path}" \
		APPJAIL_SCRIPT="${APPJAIL_PROGRAM}" \
			"${SCRIPTSDIR}/run_jail.sh" -C -F "${custom_stage}" -f "${CONFIG}" -a "${args}" -- "${initscript}"
}

run_help()
{
	man 1 appjail-run
}

run_usage()
{
	cat << EOF
usage: run [-i <initscript>] [[-p <parameter>=<value>] ...] [[-V <name>=<value>]
               ...] [-s <name>] <jail>
EOF
}
