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 $output; } // function recaptcha_mailhide_help /** * reCAPTCHA implementation of hook_filter */ function recaptcha_mailhide_filter($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': require_once('recaptcha.inc'); @(include_once('recaptcha/recaptchalib.php')) or _recaptcha_library_not_found(); $form['filter_recaptcha'] = array('#type' => 'fieldset', '#title' => t('reCAPTCHA Mailhide Keys'), '#collapsible' => TRUE, '#collapsed' => FALSE); $form['filter_recaptcha']["recaptcha_mailhide_public_key_$format"] = array( '#type' => 'textfield', '#title' => t('Public Key'), '#default_value' => variable_get("recaptcha_mailhide_public_key_$format", ''), '#maxlength' => 50, '#description' => t('Your public Mailhide key obtained from reCAPTCHA.', array('@url' => 'http://mailhide.recaptcha.net/apikey')), ); $form['filter_recaptcha']["recaptcha_mailhide_private_key_$format"] = array( '#type' => 'textfield', '#title' => t('Private Key'), '#default_value' => variable_get("recaptcha_mailhide_private_key_$format", ''), '#maxlength' => 50, '#description' => t('Your private Mailhide key obtained from reCAPTCHA.', array('@url' => 'http://mailhide.recaptcha.net/apikey')), ); return $form; break; case 'process': require_once('recaptcha.inc'); global $recaptcha_mailhide_public_key, $recaptcha_mailhide_private_key; @(include_once('recaptcha/recaptchalib.php')) or _recaptcha_library_not_found(); $recaptcha_mailhide_public_key = variable_get("recaptcha_mailhide_public_key_$format", ''); $recaptcha_mailhide_private_key = variable_get("recaptcha_mailhide_private_key_$format", ''); $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); return $text; default: return $text; } } /** * reCAPTCHA implementation of hook_filter_tips */ function recaptcha_mailhide_filter_tips($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; $email = recaptcha_mailhide_html($recaptcha_mailhide_public_key, $recaptcha_mailhide_private_key, $match[2]); return $match[1] . $email . $match[3]; }