reCAPTCHA web service to protect email addresses.', array('@url' => url('http://www.recaptcha.net'))); break; case 'admin/help#recaptcha': $output .= '

'. t('Uses the reCAPTCHA web service to protect email addresses. For more information on what reCAPTCHA Mailhide is, visit the official website.', array('@url' => url('http://mailhide.recaptcha.net'))) . '

'. t('Configuration') . '

'. t('Head over to the input format settings and add the reCAPTCHA Mailhide input filter to hide posted emails.', array('@inputformats' => url('admin/settings/filters'), '@url' => url('http://mailhide.recaptcha.net'))) . '

'; break; } return $output; } /** * Implementation of hook_filter(). */ function recaptcha_mailhide_filter($op, $delta = 0, $format = -1, $text = '') { switch ($op) { case 'list': return array(0 => t('reCAPTCHA Mailhide')); case 'description': return recaptcha_mailhide_filter_tips($delta, $format); case 'settings': _recaptcha_mailhide_load_library(); $form['filter_recaptcha'] = array('#type' => 'fieldset', '#title' => t('reCAPTCHA Mailhide Keys'), '#collapsible' => TRUE, '#collapsed' => FALSE); $form['filter_recaptcha']['recaptcha_mailhide_public_key'] = array( '#type' => 'textfield', '#title' => t('Public Key'), '#default_value' => variable_get('recaptcha_mailhide_public_key', ''), '#maxlength' => 50, '#description' => t('Your public Mailhide key obtained from reCAPTCHA.', array('@url' => 'http://mailhide.recaptcha.net/apikey')), ); $form['filter_recaptcha']['recaptcha_mailhide_private_key'] = array( '#type' => 'textfield', '#title' => t('Private Key'), '#default_value' => variable_get('recaptcha_mailhide_private_key', ''), '#maxlength' => 50, '#description' => t('Your private Mailhide key obtained from reCAPTCHA.', array('@url' => 'http://mailhide.recaptcha.net/apikey')), ); return $form; break; case 'process': global $_recaptcha_mailhide_public_key, $_recaptcha_mailhide_private_key, $_recaptcha_mailhide_nokey_warn; _recaptcha_mailhide_load_library(); $_recaptcha_mailhide_public_key = variable_get('recaptcha_mailhide_public_key', ''); $_recaptcha_mailhide_private_key = variable_get('recaptcha_mailhide_private_key', ''); $text = ' '. $text .' '; $text = preg_replace_callback("!(

|

  • ||[ \n\r\t\(])([A-Za-z0-9._-]+@[A-Za-z0-9._+-]+\.[A-Za-z]{2,4})([.,?]?)(?=(

    |
    • ||[ \n\r\t\)]))!i", '_recaptcha_replace', $text); $text = substr($text, 1, -1); unset($_recaptcha_mailhide_public_key); unset($_recaptcha_mailhide_private_key); unset($_recaptcha_mailhide_nokey_warn); return $text; default: return $text; } } /** * Implementation of hook_filter_tips(). */ function recaptcha_mailhide_filter_tips($delta, $format, $long = false) { return t('E-Mail addresses are hidden with reCAPTCHA Mailhide.', array('@url' => 'http://mailhide.recaptcha.net/')); } /** * Private reCAPTCHA function to replace an email regex match */ function _recaptcha_replace($match) { global $_recaptcha_mailhide_public_key, $_recaptcha_mailhide_private_key, $_recaptcha_mailhide_nokey_warn; // recaptchalib will die if we invoke without setting the keys. Fail gracefully in this case. if (empty($_recaptcha_mailhide_public_key) || empty($_recaptcha_mailhide_private_key)) { if ($_recaptcha_mailhide_nokey_warn != TRUE) { drupal_set_message(t('Addresses cannot be hidden because the administrator has not set the reCAPTCHA Mailhide keys.'), 'error'); $_recaptcha_mailhide_nokey_warn = TRUE; } $email = $match[2]; } else { $email = recaptcha_mailhide_html($_recaptcha_mailhide_public_key, $_recaptcha_mailhide_private_key, $match[2]); } return $match[1] . $email . $match[3]; } /** * Load the recaptcha library. */ function _recaptcha_mailhide_load_library() { module_load_include('php', 'recaptcha', 'recaptcha/recapthcalib'); }