extract slack

extract.php

<?php

function isDirectory($file, $items) {
  if (strpos($file, '.') !== false) {
    return false; // nothing with a dot is a directory
  }
  $regex = "/^" . preg_quote($file, '/') . "\//";
  foreach ($items as $item) {
    if (!!preg_match($regex, $item)) {
      return true; // it found things inside!
    }
  }
}

$files = explode("\n", trim(file_get_contents('./file.data')));
$extractDir = getcwd() . DIRECTORY_SEPARATOR . 'ext';
$prefix = '../';

echo "cd " . $extractDir . PHP_EOL;
foreach ($files as $key => $file) {
  if (isDirectory($file, array_slice($files, $key))) {
    echo "cd " . $extractDir . PHP_EOL;
    echo "mkdir -p $file" . PHP_EOL;
    echo "cd $file" . PHP_EOL;
    $prefix = str_repeat('../', 1 + count(explode('/', $file)));
  } else if (strpos($file, '/.') === false) {
    echo "asar extract-file {$prefix}app.asar {$file}" . PHP_EOL;
  }
}

runner.sh

rm -rf ext && mkdir ext
asar list ./app.asar | sed 's/^.//' | grep -v '\.cache' > file.data
php extract.php > extract.sh
chmod +x extract.sh
./extract.sh