distribution/packages/jelos/sources/scripts/system-upgrade

#!/bin/bash
# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright (C) 2020-present Fewtarius

. /etc/profile

ORGANIZATION="JustEnoughLinuxOS"

BRANCH="$(get_setting updates.branch)"
if [ "${BRANCH}" == "dev" ]
then
  PROJECT="distribution-dev"
else
  PROJECT="distribution"
fi

FORCE="$(get_setting updates.force)"

GIT_REPO="https://github.com/${ORGANIZATION}/${PROJECT}"
GIT_API="https://api.github.com/repos/${ORGANIZATION}/${PROJECT}"
UPDATE_PATH="/storage/.update"
EXTENSION="tar"

function check_network() {
  GW=$(ip route | awk '/eth0/ {a=$0} END{print $1}')
  if [[ ${GW} =~ [0-9] ]]
  then
    echo true
  else
    echo false
  fi
}

get_available() {
  echo $(df | awk '/'$1'/ {printf $4; exit}')
}

get_size() {
  echo $(df | awk '/'$1'/ {printf $2; exit}')
}

check_space() {
  MYSIZE="$(get_$1 $2)"
  VOLNAME="$3"
  REQUIRED="$4"
  if [ "${MYSIZE}" -lt "${REQUIRED}" ]
  then
    NEEDED=$(( (${REQUIRED} - ${MYSIZE} ) / 1024 ))
    echo -e "There is not enough free space available ${VOLNAME} to install this update.  Free up an additional ${NEEDED}MB, or reflash the newer version." >/dev/console
    echo "Exiting in 5 seconds..." >/dev/console && sleep 5
    systemctl start ${UI_SERVICE} &
    exit 1
  fi
}

systemctl stop ${UI_SERVICE}
clear >/dev/console

ONLINE_STATUS=$(check_network)
if [ ! "${ONLINE_STATUS}" == true ]
then
  echo "System not online, cannot continue..." >/dev/console
  echo "Exiting in 5 seconds..."  >/dev/console && sleep 5
  systemctl start ${UI_SERVICE} &
  exit 0
fi

echo -e "=> ${OS_NAME} UPGRADE UTILITY" >/dev/console


# Check storage
check_space size flash boot 2048000
check_space available .update GAMES 4096000

# Download
LATEST_RELEASE_TAG=$(curl -H 'Cache-Control: no-cache' -Ls "${GIT_API}/releases" | python -c "import sys, json; print(json.load(sys.stdin)[0]['tag_name'])")
if [ "${OS_VERSION}" -ge "${LATEST_RELEASE_TAG}" ] && [ ! "${FORCE}" = "1" ]
then
  echo "No new updates are available..." >/dev/console
  echo "Exiting in 5 seconds..." >/dev/console && sleep 5
  systemctl start ${UI_SERVICE} &
  exit 0
fi

echo -e "\nFetching: ${OS_NAME}-${HW_DEVICE}.${HW_ARCH}-${LATEST_RELEASE_TAG}.${EXTENSION}" >/dev/console
curl -Lo "${UPDATE_PATH}/${OS_NAME}-${HW_DEVICE}.${HW_ARCH}-${LATEST_RELEASE_TAG}.${EXTENSION}" "${GIT_REPO}/releases/download/${LATEST_RELEASE_TAG}/${OS_NAME}-${HW_DEVICE}.${HW_ARCH}-${LATEST_RELEASE_TAG}.tar" 2>/dev/console
echo -e "Fetching: ${OS_NAME}-${HW_DEVICE}.${HW_ARCH}-${LATEST_RELEASE_TAG}.${EXTENSION}.sha256" >/dev/console
curl -Lo "${UPDATE_PATH}/${OS_NAME}-${HW_DEVICE}.${HW_ARCH}-${LATEST_RELEASE_TAG}.${EXTENSION}.sha256" "${GIT_REPO}/releases/download/${LATEST_RELEASE_TAG}/${OS_NAME}-${HW_DEVICE}.${HW_ARCH}-${LATEST_RELEASE_TAG}.tar.sha256" 2>/dev/console

echo -e "\nVerifying download, please wait..." >/dev/console
# Verify
MYSUM=$(sha256sum ${UPDATE_PATH}/${OS_NAME}-${HW_DEVICE}.${HW_ARCH}-${LATEST_RELEASE_TAG}.${EXTENSION} | awk '{print $1}')
DLSUM=$(cat ${UPDATE_PATH}/${OS_NAME}-${HW_DEVICE}.${HW_ARCH}-${LATEST_RELEASE_TAG}.${EXTENSION}.sha256 | awk '{print $1}')

if [ ! "${MYSUM}" == "${DLSUM}" ]
then
  echo "Verification failed, cleaning up and exiting..." >/dev/console
  rm -f ${UPDATE_PATH}/*
  sleep 5
  clear >/dev/console
  systemctl start ${UI_SERVICE}
  exit 1
else
  echo "Verification successful..." >/dev/console
fi

if [ "${FORCE}" == "1" ]
then
  set_setting updates.force 0
fi

echo -e "\nRebooting to complete OS upgrade..." >/dev/console
sync
sleep 3
reboot