#!/bin/sh
#
# Copyright (c) 2018-2021, 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.
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# * 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
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#   this software without specific prior written permission.
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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. /usr/local/share/bastille/common.sh
. /usr/local/etc/bastille/bastille.conf

usage() {
    error_exit "Usage: bastille update [release|container] | [option]"
}

# Handle special-case commands first.
case "$1" in
help|-h|--help)
    usage
    ;;
esac

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

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

# Handle options
case "${OPTION}" in
    -f|--force)
        OPTION="-F"
        ;;
    *)
        OPTION=
        ;;
esac

# Check for unsupported actions
if [ "${TARGET}" = "ALL" ]; then
    error_exit "Batch upgrade is unsupported."
fi

if [ -f /bin/midnightbsd-version ]; then
    echo -e "${COLOR_RED}Not yet supported on MidnightBSD.${COLOR_RESET}"
    exit 1
fi

if freebsd-version | grep -qi HBSD; then
    error_exit "Not yet supported on HardenedBSD."
fi

jail_check() {
    # Check if the jail is thick and is running
    if [ ! "$(jls name | awk "/^${TARGET}$/")" ]; then
        error_exit "[${TARGET}]: Not started. See 'bastille start ${TARGET}'."
    else
        if grep -qw "${bastille_jailsdir}/${TARGET}/root/.bastille" "${bastille_jailsdir}/${TARGET}/fstab"; then
            error_exit "${TARGET} is not a thick container."
        fi
    fi
}

jail_update() {
    # Update a thick container
    if [ -d "${bastille_jailsdir}/${TARGET}" ]; then
        jail_check    
        CURRENT_VERSION=$(/usr/sbin/jexec -l "${TARGET}" freebsd-version 2>/dev/null)
        if [ -z "${CURRENT_VERSION}" ]; then
            error_exit "Can't determine '${TARGET}' version."
        else
            env PAGER="/bin/cat" freebsd-update ${OPTION} --not-running-from-cron -b "${bastille_jailsdir}/${TARGET}/root" \
            fetch install --currently-running "${CURRENT_VERSION}"
        fi
    else
        error_exit "${TARGET} not found. See 'bastille bootstrap'."
    fi
}

release_update() {
    # Update a release base(affects child containers)
    if [ -d "${bastille_releasesdir}/${TARGET}" ]; then
        env PAGER="/bin/cat" freebsd-update ${OPTION} --not-running-from-cron -b "${bastille_releasesdir}/${TARGET}" \
        fetch install --currently-running "${TARGET}"
    else
        error_exit "${TARGET} not found. See 'bastille bootstrap'."
    fi
}

# Check what we should update
if echo "${TARGET}" | grep -q "[0-9]\{2\}.[0-9]-RELEASE"; then
    release_update
else
    jail_update
fi