validate.sh

#!/usr/bin/env bash
shopt -s globstar # Decend into subdirectories
ROOTDIR="$(readlink -f $(dirname ${BASH_SOURCE[0]}))"
[ ! -d "${ROOTDIR}" ] && exit 100;

RESET='\033[0;0m'
ACCENT='\033[0;97m'
ERROR='\033[1;91m'
SUCCESS='\033[1;92m'

print_clr() {
  [ "$#" -ne 2 ] && exit 101;
  printf "$1$2${RESET}\n"
}

test_dep() {
  [ "$#" -ne 1 ] && exit 102;
  if [ -z "$(command -v $1)" ]; then
    printf "Error: '$1' was not found in PATH.\n"
    exit 102;
  fi
}

test_dependencies() {
  test_dep "sha256sum"
  test_dep "jq"
  test_dep "xargs"
  test_dep "find"
}

test_repository_structure() {
  cd "${ROOTDIR}"
  if [ ! -d "Repository" ]; then
    print_clr ${ERROR} " Repository is missing expected 'Repository' folder"
    exit 104
  fi
  while read LINE; do
    if ! [[ "$LINE" =~ ^Repository/[0-9]([.][0-9]){3}(/[^/]+){2}/[^/]+json$ ]]; then
      error=$?
      print_clr ${ERROR} "  FAIL: Invalid path ${LINE}"
    fi
  done < <(find Repository/ -iname '*.json' -type f)

  [ ! -z "$error" ] && exit $error
  print_clr ${SUCCESS}  "  SUCCESS: Repository directory structure"
}

check_sha256() {
  [ "$#" -ne 2 ] && exit 103;

  printf "  URL:     $1\n"
  printf "  SHA256:  $2\n"

  CURL_OUTPUT=$(curl -sL "$1" | sha256sum)
  REMOTE_SHA256="$(printf ${CURL_OUTPUT% -} | xargs)"

  if [ "${REMOTE_SHA256}" == "$2" ]; then
    print_clr ${SUCCESS} "  Success: ${REMOTE_SHA256}"
  else
    print_clr ${ERROR} "  Failed:  ${REMOTE_SHA256}"
    exit 200;
  fi
}

validate() {
  print_clr ${ACCENT} "Validating '$1'"
  SHA256=$(jq -r '.SHA256' $1)
  DOWNLOAD_URL=$(jq -r '.DownloadUrl' $1)

  check_sha256 "${DOWNLOAD_URL}" "${SHA256}"
}

test_dependencies
test_repository_structure

for file in ${ROOTDIR}/**; do
  [ "${file: -5}" == ".json" ] && validate "${file}"
done
exit 0