recaptcha_mailhide.module in reCAPTCHA 6
Same filename and directory in other branches
Protects email addresses using the reCAPTCHA web service.
File
recaptcha_mailhide/recaptcha_mailhide.moduleView source
<?php
/**
* @file
* Protects email addresses using the reCAPTCHA web service.
*/
/**
* Implements hook_help().
*/
function recaptcha_mailhide_help($path, $arg) {
$output = '';
switch ($path) {
case 'admin/modules#name':
$output .= t('reCAPTCHA');
break;
case 'admin/modules#description':
$output .= t('Uses the <a href="@url">reCAPTCHA</a> web service to protect email addresses.', array(
'@url' => url('http://www.google.com/recaptcha/mailhide/apikey'),
));
break;
case 'admin/help#recaptcha':
$output .= '<p>' . t('Uses the reCAPTCHA web service to protect email addresses. For more information on what reCAPTCHA Mailhide is, visit <a href="@url">the official website</a>.', array(
'@url' => url('https://www.google.com/recaptcha/mailhide/'),
)) . '</p><h3>' . t('Configuration') . '</h3><p>' . t('Head over to the <a href="@inputformats">input format settings</a> and add the <a href="@url">reCAPTCHA Mailhide</a> input filter to hide posted emails.', array(
'@inputformats' => url('admin/settings/filters'),
'@url' => url('http://www.google.com/recaptcha/mailhide/apikey'),
)) . '</p>';
break;
}
return $output;
}
/**
* Implements hook_filter().
*/
function recaptcha_mailhide_filter($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 <a href="@url">reCAPTCHA</a>.', array(
'@url' => 'https://www.google.com/recaptcha/mailhide/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 <a href="@url">reCAPTCHA</a>.', array(
'@url' => 'https://www.google.com/recaptcha/mailhide/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("!(<p>|<li>|<br\\s*/?>|[ \n\r\t\\(])([A-Za-z0-9._-]+@[A-Za-z0-9._+-]+\\.[A-Za-z]{2,4})([.,?]?)(?=(</p>|</li>|<br\\s*/?>|[ \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;
default:
return $text;
}
}
/**
* Implements hook_filter_tips().
*/
function recaptcha_mailhide_filter_tips($delta, $format, $long = FALSE) {
return t('E-Mail addresses are hidden with <a href="@url">reCAPTCHA Mailhide</a>.', array(
'@url' => 'http://www.google.com/recaptcha/mailhide/apikey',
));
}
/**
* Private reCAPTCHA function to replace an email regex match
*/
function _recaptcha_replace($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($_recaptcha_mailhide_private_key) || !function_exists('mcrypt_encrypt')) {
if ($_recaptcha_mailhide_nokey_warn != TRUE) {
if (!function_exists('mcrypt_encrypt')) {
drupal_set_message(t('Addresses cannot be hidden because Mcrypt is not installed.'), 'error');
}
else {
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-php-1.11/recaptchalib');
}
Functions
Name | Description |
---|---|
recaptcha_mailhide_filter | Implements hook_filter(). |
recaptcha_mailhide_filter_tips | Implements hook_filter_tips(). |
recaptcha_mailhide_help | Implements hook_help(). |
_recaptcha_mailhide_load_library | Load the recaptcha library. |
_recaptcha_replace | Private reCAPTCHA function to replace an email regex match |