function captcha_requirements in CAPTCHA 5.3

Same name and namespace in other branches

1. 8 captcha.install \captcha_requirements()
2. 6.2 captcha.install \captcha_requirements()
3. 6 captcha.module \captcha_requirements()
4. 7 captcha.install \captcha_requirements()

Implementation of hook_requirements().

File

./captcha.module, line 129

This module enables basic CAPTCHA functionality: administrators can add a CAPTCHA to desired forms that users without the 'skip CAPTCHA' permission (typically anonymous visitors) have to solve.

Code

function captcha_requirements($phase) {
  $requirements = array();
  $t = get_t();
  if ($phase == 'runtime') {

    // show the wrong response counter in the status report
    $requirements['captcha_wrong_response_counter'] = array(
      'title' => $t('CAPTCHA'),
      'value' => $t('Already @counter blocked form submissions', array(
        '@counter' => variable_get('captcha_wrong_response_counter', 0),
      )),
      'severity' => REQUIREMENT_INFO,
    );

    // Check if there is an entry for uid=0 in the users table, this is required
    // to have working a $_SESSION variable for anonymous users.
    if (!db_result(db_query('SELECT COUNT(*) FROM {users} WHERE uid=%d', 0))) {
      $requirements['captcha_no_sessions_for_anonymous'] = array(
        'title' => $t('CAPTCHA'),
        'value' => $t('No sessions for anonymous users.'),
        'description' => $t('There is no entry for uid 0 in the %users table of the database. This disables persistent session data for anonymous users. Because the CAPTCHA module depends on this session data, CAPTCHAs will not work for anonymous users. Add a row for uid 0 to the %users table to resolve this.', array(
          '%users' => 'users',
        )),
        'severity' => REQUIREMENT_ERROR,
      );
    }
  }
  return $requirements;
}