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/filter'), '@url' => url('http://mailhide.recaptcha.net'))) .
'
';
break;
}
return $output;
}
/**
* Implements hook_filter_info().
*/
function recaptcha_mailhide_filter_info() {
$filters['filter_recaptcha_mailhide'] = array(
'title' => t('reCAPTCHA Mailhide'),
'description' => _filter_recaptcha_mailhide_tips('', ''),
'process callback' => '_filter_recaptcha_mailhide',
'settings callback' => '_filter_recaptcha_mailhide_settings',
'tips callback' => '_filter_recaptcha_mailhide_tips',
'cache' => FALSE,
);
return $filters;
}
// Filter callbacks
function _filter_recaptcha_mailhide($text, $filter, $format) {
global $_recaptcha_mailhide_public_key, $_recaptcha_mailhide_private_key, $_recaptcha_mailhide_nokey_warn;
_recaptcha_mailhide_load_library();
$_recaptcha_mailhide_public_key = $filter->settings['recaptcha_mailhide_public_key'];
$_recaptcha_mailhide_private_key = $filter->settings['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);
$text = drupal_substr($text, 1, -1);
unset($_recaptcha_mailhide_public_key);
unset($_recaptcha_mailhide_private_key);
unset($_recaptcha_mailhide_nokey_warn);
return $text;
}
function _filter_recaptcha_mailhide_settings($form, &$form_state, $filter, $format, $defaults, $filters) {
_recaptcha_mailhide_load_library();
$public = isset($filter->settings['recaptcha_mailhide_public_key']) ? $filter->settings['recaptcha_mailhide_public_key'] : '';
$private = isset($filter->settings['recaptcha_mailhide_private_key']) ? $filter->settings['recaptcha_mailhide_private_key'] : '';
$settings['recaptcha_mailhide_public_key'] = array(
'#type' => 'textfield',
'#title' => t('Public Key'),
'#default_value' => $public,
'#maxlength' => 50,
'#description' => t('Your public Mailhide key obtained from reCAPTCHA.', array('@url' => 'http://mailhide.recaptcha.net/apikey')),
);
$settings['recaptcha_mailhide_private_key'] = array(
'#type' => 'textfield',
'#title' => t('Private Key'),
'#default_value' => $private,
'#maxlength' => 50,
'#description' => t('Your private Mailhide key obtained from reCAPTCHA.', array('@url' => 'http://mailhide.recaptcha.net/apikey')),
);
return $settings;
}
function _filter_recaptcha_mailhide_tips($filter, $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/recaptchalib');
}