#!/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
# 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.

PATH=${PATH}:/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin

BASTILLE_VERSION=f5332cbf

# Validate config file
# Copy default when 'setup' is called
# so we can skip to the setup command
bastille_conf_check() {

    local _config="${1}"
    shift 1
    local _args="$@"

    if [ ! -r "${_config}" ]; then
        if echo "${_args}" | grep -Eosqw "setup"; then
            cp /usr/local/etc/bastille/bastille.conf.sample /usr/local/etc/bastille/bastille.conf
        else
            echo -e "\n[ERROR]: No config file found!"
            echo -e "Please run 'bastille setup' to configure Bastille.\n"
            exit 1
        fi
    fi
}

## bastille_prefix should be 0750
## this restricts file system access to privileged users
bastille_perms_check() {
    if [ -d "${bastille_prefix}" ]; then
        BASTILLE_PREFIX_PERMS=$(stat -f "%Op" "${bastille_prefix}")
        if [ "${BASTILLE_PREFIX_PERMS}" != 40750 ]; then
            error_notify "Insecure permissions on ${bastille_prefix}"
            error_exit "Try: chmod 0750 ${bastille_prefix}"
        fi
    fi
}

usage() {
    cat << EOF
	
Bastille is an open-source system for automating deployment and management of
containerized applications on FreeBSD.

Usage:
  bastille command [option(s)] TARGET [option(s)] ARGS

Available Commands:
  bootstrap   Bootstrap a FreeBSD release for container base.
  clone       Clone an existing container.
  cmd         Execute arbitrary command on targeted container(s).
  config      Get or set a config value for the targeted container(s).
  console     Console into a running container.
  convert     Convert a Thin container into a Thick container.
  cp          cp(1) files from host to jail(s).
  create      Create a new thin container or a thick container if -T|--thick option specified.
  destroy     Destroy a stopped container or a FreeBSD release.
  edit        Edit container configuration files (advanced).
  etcupdate   Update /etc directory to specified release.
  export      Exports a specified container.
  help        Help about any command.
  htop        Interactive process viewer (requires htop).
  import      Import a specified container.
  jcp         cp(1) files from a jail to jail(s).
  limits      Apply resources limits to targeted container(s). See rctl(8).
  list        List containers (running).
  migrate     Migrate targetted jail(s) to a remote system.
  mount       Mount a volume inside the targeted container(s).
  network     Add/remove network interfaces from targeted container.
  pkg         Manipulate binary packages within targeted container(s). See pkg(8).
  rcp         cp(1) files from a jail to host.
  rdr         Redirect host port to container port.
  rename      Rename a container.
  restart     Restart a running container.
  service     Manage services within targeted container(s).
  setup       Attempt to auto-configure network, firewall and storage on new installs.
  start       Start a stopped container.
  stop        Stop a running container.
  sysrc       Safely edit rc files within targeted container(s).
  tags        Add or remove tags to targeted container(s).
  template    Apply file templates to targeted container(s).
  top         Display and update information about the top(1) cpu processes.
  umount      Unmount a volume from within the targeted container(s).
  update      Update container base -pX release.
  upgrade     Upgrade container release to X.Y-RELEASE.
  verify      Compare release against a "known good" index.
  zfs         Manage (get|set) ZFS attributes or snapshots on targeted container(s).

Use "bastille -v|--version" for version information.
Use "bastille command -h|--help" for more information about a command.
Use "bastille -c|--config FILE command" to specify a non-default config file.
Use "bastille -p|--parallel VALUE command" to run bastille in parallel mode.

EOF
    exit 1
}

if [ -z "${BASTILLE_CONFIG}" ]; then
    if [ -z "${BASTILLE_CONFIG}" ]; then
        BASTILLE_CONFIG=/usr/local/etc/bastille/bastille.conf
        export BASTILLE_CONFIG
    elif [ -r "/usr/local/etc/bastille/${BASTILLE_CONFIG}" ]; then
        BASTILLE_CONFIG="/usr/local/etc/bastille/${BASTILLE_CONFIG}"
        export BASTILLE_CONFIG
    else
        echo "Not a valid config file: ${BASTILLE_CONFIG}"
        exit 1
    fi
fi

# Pass BASTILLE_CONFIG and ARGS to config function
bastille_conf_check "${BASTILLE_CONFIG}" "$@"
bastille_perms_check

# Load common.sh after setting BASTILLE_CONFIG
. /usr/local/share/bastille/common.sh

# Handle options
bastille_parallel_mode=0
bastille_process_limit="${bastille_process_limit:-1}"
while [ "$#" -gt 0 ]; do
    case "${1}" in
        -h|--help|help)
            usage
            ;;
        version|-v|--version)
            info "${BASTILLE_VERSION}"
            exit 0
            ;;
        -c|--config)
            BASTILLE_CONFIG="${2}"
            if [ -r "/usr/local/etc/bastille/${BASTILLE_CONFIG}" ]; then
                BASTILLE_CONFIG="/usr/local/etc/bastille/${BASTILLE_CONFIG}"
                info "Using custom config: ${BASTILLE_CONFIG}"
                export BASTILLE_CONFIG
            else
                error_exit "Not a valid config file: ${BASTILLE_CONFIG}"
            fi
            # Load common.sh after setting BASTILLE_CONFIG
            . /usr/local/share/bastille/common.sh 
            shift 2
            ;;
        -p|--parallel)
            bastille_parallel_mode=1
            bastille_process_limit="${2}"
            if ! echo "${bastille_process_limit}" | grep -Eq "^[0-9]+$"; then
                error_exit "Not a valid process limit: ${bastille_process_limit}"
            else
                shift 2
            fi
            ;;
        -*)
            error_exit "Unknown Option: \"${1}\""
            ;;
        *)
            break
            ;;
    esac
done

# Export parallel and limit
export bastille_process_limit

if [ "$#" -lt 1 ]; then
    usage
else
    CMD="${1}"
    shift
fi

# Handle sub-commands.
case "${CMD}" in
    # Commands that don't allow parallel mode
    bootstrap| \
    clone| \
    cmd| \
    console| \
    convert| \
    create| \
    destroy| \
    edit| \
    etcupdate| \
    export| \
    htop| \
    import| \
    limits| \
    list| \
    migrate| \
    network| \
    pkg| \
    rcp| \
    rdr| \
    rename| \
    service| \
    setup| \
    top| \
    update| \
    upgrade| \
    verify| \
    zfs)
        if [ "${bastille_parallel_mode}" -eq 1 ]; then
            error_exit "Command does not support parallel mode: ${CMD}"
        fi
        ;;
    # Commands that allow parallel mode
    config| \
    cp| \
    jcp| \
    limits| \
    mount| \
    restart| \
    start| \
    stop| \
    sysrc| \
    tags| \
    template| \
    umount)
        ;;
    *)
        usage
        ;;
esac

# shellcheck disable=SC2154
SCRIPTPATH="${bastille_sharedir}/${CMD}.sh"

if [ -f "${SCRIPTPATH}" ]; then

    : "${UMASK:=022}"
    umask "${UMASK}"

    : "${SH:=sh}"

    exec "${SH}" "${SCRIPTPATH}" "$@"

else
    error_exit "${SCRIPTPATH} not found."	
fi