Skip navigation
Help

drupal_generate_test_ua

7 bootstrap.inc drupal_generate_test_ua($prefix)

Generate a user agent string with a HMAC and timestamp for simpletest.

3 calls to drupal_generate_test_ua()

File

drupal/includes/bootstrap.inc, line 2185
Functions that need to be loaded on every Drupal request.

Code

function drupal_generate_test_ua($prefix) {
  global $drupal_hash_salt;
  static $key;

  if (!isset($key)) {
    // We use the salt from settings.php to make the HMAC key, since
    // the database is not yet initialized and we can't access any Drupal variables.
    // The file properties add more entropy not easily accessible to others.
    $key = $drupal_hash_salt . filectime(__FILE__) . fileinode(__FILE__);
  }
  // Generate a moderately secure HMAC based on the database credentials.
  $salt = uniqid('', TRUE);
  $check_string = $prefix . ';' . time() . ';' . $salt;
  return $check_string . ';' . drupal_hmac_base64($check_string, $key);
}