#!/bin/sh
#
# SPDX-License-Identifier: BSD-3-Clause
#
# Copyright (c) 2018-2025, Christer Edwards <christer.edwards@gmail.com>
# 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
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. /usr/local/share/bastille/common.sh

usage() {
    error_notify "Usage: bastille console [option(s)] TARGET [USER]"
    cat << EOF

    Options:

    -a | --auto           Auto mode. Start/stop jail(s) if required.
    -x | --debug          Enable debug mode.

EOF
    exit 1
}

# Handle options.
AUTO=0
while [ "$#" -gt 0 ]; do
    case "${1}" in
        -h|--help|help)
            usage
            ;;
        -a|--auto)
            AUTO=1
            shift
            ;;
        -x|--debug)
            enable_debug
            shift
            ;;
        -*)
            for _opt in $(echo ${1} | sed 's/-//g' | fold -w1); do
                case ${_opt} in
                    x) enable_debug ;;
                    a) AUTO=1 ;;
                    *) error_exit "[ERROR]: Unknown Option: \"${1}\"" ;;
                esac
            done
            shift
            ;;
        *)
            break
            ;;
    esac
done

if [ "$#" -lt 1 ] || [ "$#" -gt 2 ]; then
    usage
fi

TARGET="${1}"
USER="${2}"

bastille_root_check
set_target "${TARGET}"

validate_user() {

    local _jail="${1}"
    local _user="${2}"

    if jexec -l "${_jail}" id "${_user}" >/dev/null 2>&1; then
        USER_SHELL="$(jexec -l "${_jail}" getent passwd "${_user}" | cut -d: -f7)"
        if [ -n "${USER_SHELL}" ]; then
            if jexec -l "${_jail}" grep -qwF "${USER_SHELL}" /etc/shells; then
                jexec -l "${_jail}" $LOGIN -f "${_user}"
            else
                echo "Invalid shell for user ${_user}"
            fi
        else
            echo "User ${_user} has no shell"
        fi
    else
        echo "Unknown user ${_user}"
    fi
}

check_fib() {

    local _jail="${1}"

    fib=$(grep 'exec.fib' "${bastille_jailsdir}/${_jail}/jail.conf" | awk '{print $3}' | sed 's/\;//g')

    if [ -n "${fib}" ]; then
        _setfib="setfib -F ${fib}"
    else
        _setfib=""
    fi
}

for _jail in ${JAILS}; do

    # Validate jail state
    check_target_is_running "${_jail}" || if [ "${AUTO}" -eq 1 ]; then
        bastille start "${_jail}"
    else
        info "\n[${_jail}]:"
        error_notify "Jail is not running."
        error_continue "Use [-a|--auto] to auto-start the jail."
    fi

    info "\n[${_jail}]:"

    LOGIN="$(jexec -l "${_jail}" which login)"

    if [ -n "${USER}" ]; then
        validate_user "${_jail}" "${USER}"
    else
        check_fib "${_jail}"
        LOGIN="$(jexec -l "${_jail}" which login)"
        ${_setfib} jexec -l "${_jail}" ${LOGIN} -f root
    fi

done
