Mod of wp-recaptcha with BuddyPress support -- quick hack

<?php

/*
 Plugin name: BP-ReCaptcha
 Plugin URI: http://createdigitalmedia.net
 Description: Adds ReCaptcha support to the registration process for BuddyPress
 Version: 0.1
 Author: Peter Kirn, modification to wp-recaptcha by http://www.blaenkdenum.com/
 Author URI: http://peter.noisepages.com
 */

/*  Copyright 2010  CREATE DIGITAL MEDIA, LTD.  (email : peter@createdigitalmedia.net)

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License, version 2, as
published by the Free Software Foundation.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

$wpmu = 0;

if (basename(dirname(__FILE__)) == "mu-plugins") // forced activated
$wpmu = 1;
else if (basename(dirname(__FILE__)) == "plugins" && function_exists('is_site_admin')) // optionally activated
$wpmu = 2;

if ($wpmu == 1)
$recaptcha_opt = get_site_option('recaptcha'); // get the options from the database
else
$recaptcha_opt = get_option('recaptcha'); // get the options from the database

// END WORDPRESS MU DETECTION

if ($wpmu == 1)
require_once(dirname(__FILE__) . '/wp-recaptcha/recaptchalib.php');
else
require_once(dirname(__FILE__) . '/recaptchalib.php');

// doesn't need to be secret, just shouldn't be used by any other code.
define ("RECAPTCHA_WP_HASH_SALT", "b7e0638d85f5d7f3694f68e944136d62");

/* =============================================================================
 CSS - This links the pages to the stylesheet to be properly styled
 ============================================================================= */

function re_css() {
    global $recaptcha_opt, $wpmu;

    if (!defined('WP_CONTENT_URL'))
    define('WP_CONTENT_URL', get_option('siteurl') . '/wp-content');

    $path = WP_CONTENT_URL . '/plugins/wp-recaptcha/recaptcha.css';

    if ($wpmu == 1)
    $path = WP_CONTENT_URL . '/mu-plugins/wp-recaptcha/recaptcha.css';

    echo '<link rel="stylesheet" type="text/css" href="' . $path . '" />';
}

function registration_css() {
    global $recaptcha_opt;

    if ($recaptcha_opt['re_registration']) {
        $width = 0;

        if ($recaptcha_opt['re_theme_reg'] == 'red' ||
        $recaptcha_opt['re_theme_reg'] == 'white' ||
        $recaptcha_opt['re_theme_reg'] == 'blackglass')
        $width = 358;
        else if ($recaptcha_opt['re_theme_reg'] == 'clean')
        $width = 485;

        echo <<<REGISTRATION
        <style type="text/css">
        #login {
                width: {$width}px !important;
        }

        #login a {
                text-align: center;
        }

        #nav {
                text-align: center;
        }
        form .submit {
            margin-top: 10px;
      }
        </style>
REGISTRATION;
    }
}

add_action('wp_head', 're_css'); // include the stylesheet in typical pages to style hidden emails
add_action('admin_head', 're_css'); // include stylesheet to style options page
add_action('login_head', 'registration_css'); // include the login div styling, embedded

/* =============================================================================
 End CSS
 ============================================================================= */

// If the plugin is deactivated, delete the preferences
function delete_preferences() {
    global $wpmu;

    if ($wpmu != 1)
    delete_option('recaptcha');
}

register_deactivation_hook(__FILE__, 'delete_preferences');

/* =============================================================================
 reCAPTCHA on Registration Form - Thanks to Ben C.'s recapture plugin
 ============================================================================= */

// Display the reCAPTCHA on the registration form
function display_recaptcha($errors) {
    global $recaptcha_opt, $wpmu;

    if ($recaptcha_opt['re_registration']) {
        $format = <<<END
        <script type='text/javascript'>
        var RecaptchaOptions = { theme : '{$recaptcha_opt['re_theme_reg']}', lang : '{$recaptcha_opt['re_lang']}' , tabindex : 30 };
        </script>
END;

        $comment_string = <<<COMMENT_FORM
        <script type='text/javascript'>
        document.getElementById('recaptcha_table').style.direction = 'ltr';
        </script>
COMMENT_FORM;

        if (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == "on")
        $use_ssl = true;
        else
        $use_ssl = false;

        if ($wpmu == 1) {
            $error = $errors->get_error_message('captcha'); ?>
<label for="verification">Verification:</label>
            <?php echo($error ? '<p class="error">'.$error.'</p>' : '') ?>
            <?php echo $format . recaptcha_wp_get_html($_GET['rerror'], $use_ssl); ?>
            <?php }

            else {
                echo '<hr style="clear: both; margin-bottom: 1.5em; border: 0; border-top: 1px solid #999; height: 1px;" />';
                echo $format . recaptcha_wp_get_html($_GET['rerror'], $use_ssl);
            }
    }
}

function display_recaptcha_bp($errors) {
    global $recaptcha_opt, $wpmu, $bp;

    if ($recaptcha_opt['re_registration']) {

        $format = <<<END
        <script type='text/javascript'>
        var RecaptchaOptions = { theme : '{$recaptcha_opt['re_theme_reg']}', lang : '{$recaptcha_opt['re_lang']}' , tabindex : 30 };
        </script>
END;

        $comment_string = <<<COMMENT_FORM
        <script type='text/javascript'>
        document.getElementById('recaptcha_table').style.direction = 'ltr';
        </script>
COMMENT_FORM;

        if (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == "on")
        $use_ssl = true;
        else
        $use_ssl = false;

        ?>
<label for="verification">Verification:</label>
        <?php do_action( 'bp_captcha_errors' ); ?>
        <?php echo $format . recaptcha_wp_get_html($_GET['rerror'], $use_ssl); ?>
        <?php
    }
}


function bp_captcha_errors() {
    if ( !empty( $bp->signup->errors['captcha'])) {
        $error_message = $bp->signup->errors['captcha'];
        echo "<div class=\"error\">' . $error_message . '</div>";
    }
}

// PK custom function for validating recaptcha for BuddyPress
function check_recaptcha_bp() {
    global $_POST, $recaptcha_opt, $bp;

    // must make a check here, otherwise the wp-admin/user-new.php script will keep trying to call
    // this function despite not having called do_action('signup_extra_fields'), so the recaptcha
    // field was never shown. this way it won't validate if it's called in the admin interface
    if (!is_admin()) {
        // It's blogname in 2.6, blog_id prior to that
        if (isset($_POST['blog_id']) || isset($_POST['blogname']))

        // no text entered
        if (empty($_POST['recaptcha_response_field']) || $_POST['recaptcha_response_field'] == '') {
            $bp->signup->errors['captcha'] = __( 'Please fill in the reCAPTCHA form.', 'buddypress');
        }

        $response = recaptcha_check_answer($recaptcha_opt['privkey'],
        $_SERVER['REMOTE_ADDR'],
        $_POST['recaptcha_challenge_field'],
        $_POST['recaptcha_response_field'] );

        // incorrect CAPTCHA
        if (!$response->is_valid)
        if ($response->error == 'incorrect-captcha-sol') {
            $bp->signup->errors['captcha'] = __( 'That reCAPTCHA response was incorrect.', 'buddypress');
        }
    }

    //return $result;
}

//PK added to hook into BP registration form
add_action('bp_before_registration_submit_buttons', 'display_recaptcha_bp', 9999);

//PK added to validate recaptcha response before allowing BP user to proceed
add_action('bp_signup_validate', 'check_recaptcha_bp');

// Hook the display_recaptcha function into WordPress
if ($wpmu != 1)
add_action('register_form', 'display_recaptcha');
else
add_action('signup_extra_fields', 'display_recaptcha');

// Check the captcha
function check_recaptcha() {
    global $recaptcha_opt, $errors;

    if (empty($_POST['recaptcha_response_field']))
    $errors['blank_captcha'] = $recaptcha_opt['error_blank'];

    else {
        $response = recaptcha_check_answer($recaptcha_opt['privkey'],
        $_SERVER['REMOTE_ADDR'],
        $_POST['recaptcha_challenge_field'],
        $_POST['recaptcha_response_field']);

        if (!$response->is_valid)
        if ($response->error == 'incorrect-captcha-sol')
        $errors['captcha_wrong'] = $recaptcha_opt['error_incorrect'];
    }
}

// Check the captcha
function check_recaptcha_new($errors) {
    global $recaptcha_opt;

    if (empty($_POST['recaptcha_response_field']) || $_POST['recaptcha_response_field'] == '') {
        $errors->add('blank_captcha', $recaptcha_opt['error_blank']);
        return $errors;
    }

    $response = recaptcha_check_answer($recaptcha_opt['privkey'],
    $_SERVER['REMOTE_ADDR'],
    $_POST['recaptcha_challenge_field'],
    $_POST['recaptcha_response_field'] );

    if (!$response->is_valid)
    if ($response->error == 'incorrect-captcha-sol')
    $errors->add('captcha_wrong', $recaptcha_opt['error_incorrect']);

    return $errors;
}

// Check the recaptcha on WordPress MU
function check_recaptcha_wpmu($result) {
    global $_POST, $recaptcha_opt;

    // must make a check here, otherwise the wp-admin/user-new.php script will keep trying to call
    // this function despite not having called do_action('signup_extra_fields'), so the recaptcha
    // field was never shown. this way it won't validate if it's called in the admin interface
    if (!is_admin()) {
        // It's blogname in 2.6, blog_id prior to that
        if (isset($_POST['blog_id']) || isset($_POST['blogname']))
        return $result;

        // no text entered
        if (empty($_POST['recaptcha_response_field']) || $_POST['recaptcha_response_field'] == '') {
            $result['errors']->add('blank_captcha', $recaptcha_opt['error_blank']);
            return $result;
        }

        $response = recaptcha_check_answer($recaptcha_opt['privkey'],
        $_SERVER['REMOTE_ADDR'],
        $_POST['recaptcha_challenge_field'],
        $_POST['recaptcha_response_field'] );

        // incorrect CAPTCHA
        if (!$response->is_valid)
        if ($response->error == 'incorrect-captcha-sol') {
            $result['errors']->add('captcha_wrong', $recaptcha_opt['error_incorrect']);
            echo "<div class=\"error\">". $recaptcha_opt['error_incorrect'] . "</div>";
        }
    }

    return $result;
}

if ($recaptcha_opt['re_registration']) {
    if ($wpmu == 1)
    add_filter('wpmu_validate_user_signup', 'check_recaptcha_wpmu');

    else if ($wpmu == 0) {
        // Hook the check_recaptcha function into WordPress
        if (version_compare(get_bloginfo('version'), '2.5' ) >= 0)
        add_filter('registration_errors', 'check_recaptcha_new');
        else
        add_filter('registration_errors', 'check_recaptcha');
    }
}
/* =============================================================================
 End reCAPTCHA on Registration Form
 ============================================================================= */

/* =============================================================================
 reCAPTCHA Plugin Default Options
 ============================================================================= */

$option_defaults = array (
   'pubkey' => '', // the public key for reCAPTCHA
   'privkey'    => '', // the private key for reCAPTCHA
   'use_mailhide_posts' => '0', // mailhide for posts/pages
   'use_mailhide_comments' => '0', // use mailhide for comments
   'use_mailhide_rss' => '0', // use mailhide for the rss feed of the posts/pages
   'use_mailhide_rss_comments' => '0', // use mailhide for the rss comments
   're_bypass' => '', // whether to sometimes skip reCAPTCHAs for registered users
   're_bypasslevel' => '', // who doesn't have to do the reCAPTCHA (should be a valid WordPress capability slug)
   'mh_bypass' => '', // whether to sometimes skip the MailHide filter for registered users
   'mh_bypasslevel' => '', // who can see full emails normally (should be a valid WordPress capability slug)
   'mailhide_pub' => '', // mailhide public key
   'mailhide_priv' => '', // mailhide private key
   're_theme' => 'red', // the default theme for reCAPTCHA on the comment post
   're_theme_reg' => 'red', // the default theme for reCAPTCHA on the registration form
   're_lang' => 'en', // the default language for reCAPTCHA
   're_tabindex' => '5', // the default tabindex for reCAPTCHA
   're_comments' => '1', // whether or not to show reCAPTCHA on the comment post
   're_registration' => '1', // whether or not to show reCAPTCHA on the registratoin page
   're_xhtml' => '0', // whether or not to be XHTML 1.0 Strict compliant
   'mh_replace_link' => '', // name the link something else
   'mh_replace_title' => '', // title of the link
   'error_blank' => '<strong>ERROR</strong>: Please fill in the reCAPTCHA form.', // the message to display when the user enters no CAPTCHA response
   'error_incorrect' => '<strong>ERROR</strong>: That reCAPTCHA response was incorrect.', // the message to display when the user enters the incorrect CAPTCHA response
);

// install the defaults
if ($wpmu != 1)
add_option('recaptcha', $option_defaults, 'reCAPTCHA Default Options', 'yes');

/* =============================================================================
 End reCAPTCHA Plugin Default Options
 ============================================================================= */

/* =============================================================================
 MailHide - This scans for addresses and hides them using the MailHide API
 ============================================================================= */

// The main mailhide filter
function mh_insert_email($content = '') {
    global $recaptcha_opt;

    // set the minimum capability needed to skip the MailHide if there is one
    if ($recaptcha_opt['mh_bypass'] && $recaptcha_opt['mh_bypasslevel'])
    $needed_capability = $recaptcha_opt['mh_bypasslevel'];

    // skip the MailHide display if the minimum capability is met
    if (($needed_capability && current_user_can($needed_capability)) || !$recaptcha_opt['re_comments']) {
        // remove the nohides
        $content = preg_replace('/\[\/?nohide\]/i','',$content);
        return $content;
    }

    // Regular Expressions thanks to diabolic from EFNet #regex

    // match hyperlinks with emails
    $regex = '%(?<!\[nohide\])<a[^>]*href="((?:mailto:)?([^@"]+@[^@"]+))"[^>]*>(.+?)<\/a>(?!\[/nohide\])%i';
    $content = preg_replace_callback($regex, "mh_replace_hyperlink", $content);

    // match emails
    $regex = '%\b([\w.+-]+@[a-z\d.-]+\.[a-z]{2,6})\b(?!\s*\[\/nohide\]|(?:(?!<a[^>]*>).)*<\/a>)%i';
    $content = preg_replace_callback($regex, "mh_replace", $content);

    // remove the nohides
    $content = preg_replace('/\[\/?nohide\]/i','',$content);
    return $content;
}

// replace the hyperlinked emails i.e. <a href="haha@lol.com">this</a> or <a href="mailto:haha@lol.com">that</a>
function mh_replace_hyperlink($matches) {
    global $recaptcha_opt;

    // set the minimum capability needed to skip the MailHide if there is one
    if ($recaptcha_opt['mh_bypass'] && $recaptcha_opt['mh_bypasslevel'])
    $needed_capability = $recaptcha_opt['mh_bypasslevel'];

    // skip the MailHide display if the minimum capability is met
    if (($needed_capability && current_user_can($needed_capability)) || !$recaptcha_opt['re_comments']) {
        // remove the nohides
        $content = preg_replace('/\[\/?nohide\]/i','',$content);
        return $content;
    }

    // get the url, the part inside the href. this is the email of course
    $url = recaptcha_mailhide_url($recaptcha_opt['mailhide_pub'], $recaptcha_opt['mailhide_priv'], $matches[2]);

    // construct a new hyperlink with the url hidden but the link text the same
    $html = "<a href='" . $url . "' onclick=\"window.open('" . htmlentities ($url, ENT_QUOTES) . "', '', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=500,height=300'); return false;\">" . $matches[3] . "</a>";

    // style it
    $html = '<span class="mh-hyperlinked">' . $html . "</span>";

    return $html;
}

// replace the plain text emails i.e. haha@lol.com
function mh_replace($matches) {
    global $recaptcha_opt;

    # var_dump($matches);

    if ($recaptcha_opt['mh_replace_link'] == "" && $recaptcha_opt['mh_replace_title'] == "") {
        // find plain text emails and hide them
        $html = recaptcha_mailhide_html($recaptcha_opt['mailhide_pub'], $recaptcha_opt['mailhide_priv'], $matches[0]);
    }

    else {
        // replace both things
        if ($recaptcha_opt['mh_replace_link'] != "" && $recaptcha_opt['mh_replace_title'] != "") {
            $url = recaptcha_mailhide_url($recaptcha_opt['mailhide_pub'], $recaptcha_opt['mailhide_priv'], $matches[0]);
            $html = "<a href='" . htmlentities($url, ENT_QUOTES) .
            "' onclick=\"window.open('" . htmlentities($url, ENT_QUOTES) . "', '', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=500,height=300'); return false;\" title=\"" . $recaptcha_opt['mh_replace_title'] . "\">" . $recaptcha_opt['mh_replace_link'] . "</a>";
        }

        // only replace the link
        else if ($recaptcha_opt['mh_replace_link'] != "" && $recaptcha_opt['mh_replace_title'] == "") {
            $url = recaptcha_mailhide_url($recaptcha_opt['mailhide_pub'], $recaptcha_opt['mailhide_priv'], $matches[0]);
            $html = "<a href='" . htmlentities($url, ENT_QUOTES) .
            "' onclick=\"window.open('" . htmlentities($url, ENT_QUOTES) . "', '', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=500,height=300'); return false;\" title=\"Reveal this e-mail address\">" . $recaptcha_opt['mh_replace_link'] . "</a>";
        }

        // only replace the title
        else if ($recaptcha_opt['mh_replace_link'] == "" && $recaptcha_opt['mh_replace_title'] != "") {
            $url = recaptcha_mailhide_url($recaptcha_opt['mailhide_pub'], $recaptcha_opt['mailhide_priv'], $matches[0]);
            $emailparts = _recaptcha_mailhide_email_parts ($matches[0]);

            $html = htmlentities($emailparts[0], ENT_QUOTES) . "<a href='" . htmlentities($url, ENT_QUOTES) .
            "' onclick=\"window.open('" . htmlentities($url, ENT_QUOTES) . "', '', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=500,height=300'); return false;\" title=\"" . $recaptcha_opt['mh_replace_title'] . "\">...</a>@" . htmlentities($emailparts[0], ENT_QUOTES);
        }
    }

    // style it
    $html = '<span class="mh-plaintext">' . $html . "</span>";

    return $html;
}

// add the filters only if mcrypt is loaded
if (extension_loaded('mcrypt')) {
    if ($recaptcha_opt['use_mailhide_posts'])
    add_filter('the_content', 'mh_insert_email');
    if ($recaptcha_opt['use_mailhide_comments'])
    add_filter('get_comment_text', 'mh_insert_email');
    if ($recaptcha_opt['use_mailhide_rss'])
    add_filter('the_content_rss', 'mh_insert_email');
    if ($recaptcha_opt['use_mailhide_rss_comments'])
    add_filter('comment_text_rss', 'mh_insert_email');
}

/* =============================================================================
 End MailHide
 ============================================================================= */

/* =============================================================================
 reCAPTCHA - The reCAPTCHA comment spam protection section
 ============================================================================= */
function recaptcha_wp_hash_comment($id)
{
    global $recaptcha_opt;

    if (function_exists('wp_hash'))
    return wp_hash(RECAPTCHA_WP_HASH_COMMENT . $id);
    else
    return md5(RECAPTCHA_WP_HASH_COMMENT . $recaptcha_opt['privkey'] . $id);
}

function recaptcha_wp_get_html ($recaptcha_error, $use_ssl=false) {
    global $recaptcha_opt;

    return recaptcha_get_html($recaptcha_opt['pubkey'], $recaptcha_error, $use_ssl, $recaptcha_opt['re_xhtml']);
}

/**
 *  Embeds the reCAPTCHA widget into the comment form.
 *
 */
function recaptcha_comment_form() {
    global $user_ID, $recaptcha_opt;

    // set the minimum capability needed to skip the captcha if there is one
    if ($recaptcha_opt['re_bypass'] && $recaptcha_opt['re_bypasslevel'])
    $needed_capability = $recaptcha_opt['re_bypasslevel'];

    // skip the reCAPTCHA display if the minimum capability is met
    if (($needed_capability && current_user_can($needed_capability)) || !$recaptcha_opt['re_comments'])
    return;

    else {
        // Did the user fail to match the CAPTCHA? If so, let them know
        if ($_GET['rerror'] == 'incorrect-captcha-sol')
        echo "<p class=\"recaptcha-error\">" . $recaptcha_opt['error_incorrect'] . "</p>";

        //modify the comment form for the reCAPTCHA widget
        $recaptcha_js_opts = <<<OPTS
        <script type='text/javascript'>
                var RecaptchaOptions = { theme : '{$recaptcha_opt['re_theme']}', lang : '{$recaptcha_opt['re_lang']}' , tabindex : {$recaptcha_opt['re_tabindex']} };
        </script>
OPTS;

        if ($recaptcha_opt['re_xhtml']) {
            $comment_string = <<<COMMENT_FORM
                <div id="recaptcha-submit-btn-area"><br /></div>
                <script type='text/javascript'>
                var sub = document.getElementById('submit');
                sub.parentNode.removeChild(sub);
                document.getElementById('recaptcha-submit-btn-area').appendChild (sub);
                document.getElementById('submit').tabIndex = 6;
                if ( typeof _recaptcha_wordpress_savedcomment != 'undefined') {
                        document.getElementById('comment').value = _recaptcha_wordpress_savedcomment;
                }
                document.getElementById('recaptcha_table').style.direction = 'ltr';
                </script>
COMMENT_FORM;
        }

        else {
            $comment_string = <<<COMMENT_FORM
                <div id="recaptcha-submit-btn-area"></div>
                <script type='text/javascript'>
                var sub = document.getElementById('submit');
                sub.parentNode.removeChild(sub);
                document.getElementById('recaptcha-submit-btn-area').appendChild (sub);
                document.getElementById('submit').tabIndex = 6;
                if ( typeof _recaptcha_wordpress_savedcomment != 'undefined') {
                        document.getElementById('comment').value = _recaptcha_wordpress_savedcomment;
                }
                document.getElementById('recaptcha_table').style.direction = 'ltr';
                </script>
                <noscript>
                 <style type='text/css'>#submit {display:none;}</style>
                 <input name="submit" type="submit" id="submit-alt" tabindex="6" value="Submit Comment"/>
                </noscript>
COMMENT_FORM;
        }

        if (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == "on")
        $use_ssl = true;
        else
        $use_ssl = false;

        echo $recaptcha_js_opts .  recaptcha_wp_get_html($_GET['rerror'], $use_ssl) . $comment_string;
    }
}

add_action('comment_form', 'recaptcha_comment_form');

function recaptcha_wp_show_captcha_for_comment() {
    global $user_ID;
    return true;
}

$recaptcha_saved_error = '';

/**
 * Checks if the reCAPTCHA guess was correct and sets an error session variable if not
 * @param array $comment_data
 * @return array $comment_data
 */
function recaptcha_wp_check_comment($comment_data) {
    global $user_ID, $recaptcha_opt;
    global $recaptcha_saved_error;

    // set the minimum capability needed to skip the captcha if there is one
    if ($recaptcha_opt['re_bypass'] && $recaptcha_opt['re_bypasslevel'])
    $needed_capability = $recaptcha_opt['re_bypasslevel'];

    // skip the filtering if the minimum capability is met
    if (($needed_capability && current_user_can($needed_capability)) || !$recaptcha_opt['re_comments'])
    return $comment_data;

    if (recaptcha_wp_show_captcha_for_comment()) {
        if ( $comment_data['comment_type'] == '' ) { // Do not check trackbacks/pingbacks
            $challenge = $_POST['recaptcha_challenge_field'];
            $response = $_POST['recaptcha_response_field'];

            $recaptcha_response = recaptcha_check_answer ($recaptcha_opt ['privkey'], $_SERVER['REMOTE_ADDR'], $challenge, $response);
            if ($recaptcha_response->is_valid)
            return $comment_data;
            else {
                $recaptcha_saved_error = $recaptcha_response->error;
                add_filter('pre_comment_approved', create_function('$a', 'return \'spam\';'));
                return $comment_data;
            }
        }
    }
    return $comment_data;
}

/*
 * If the reCAPTCHA guess was incorrect from recaptcha_wp_check_comment, then redirect back to the comment form
 * @param string $location
 * @param OBJECT $comment
 * @return string $location
 */
function recaptcha_wp_relative_redirect($location, $comment) {
    global $recaptcha_saved_error;
    if($recaptcha_saved_error != '') {
        //replace the '#comment-' chars on the end of $location with '#commentform'.

        $location = substr($location, 0,strrpos($location, '#')) .
        ((strrpos($location, "?") === false) ? "?" : "&") .
            'rcommentid=' . $comment->comment_ID .
            '&rerror=' . $recaptcha_saved_error .
            '&rchash=' . recaptcha_wp_hash_comment ($comment->comment_ID) .
            '#commentform';
    }
    return $location;
}

/*
 * If the reCAPTCHA guess was incorrect from recaptcha_wp_check_comment, then insert their saved comment text
 * back in the comment form.
 * @param boolean $approved
 * @return boolean $approved
 */
function recaptcha_wp_saved_comment() {
    if (!is_single() && !is_page())
    return;

    if ($_GET['rcommentid'] && $_GET['rchash'] == recaptcha_wp_hash_comment ($_GET['rcommentid'])) {
        $comment = get_comment($_GET['rcommentid']);

        $com = preg_replace('/([\\/\(\)\+\;\'\"])/e','\'%\'.dechex(ord(\'$1\'))', $comment->comment_content);
        $com = preg_replace('/\\r\\n/m', '\\\n', $com);

        echo "
      <script type='text/javascript'>
      var _recaptcha_wordpress_savedcomment =  '" . $com  ."';

      _recaptcha_wordpress_savedcomment = unescape(_recaptcha_wordpress_savedcomment);
      </script>
      ";

        wp_delete_comment($comment->comment_ID);
    }
}

function recaptcha_wp_blog_domain () {
    $uri = parse_url(get_settings('siteurl'));
    return $uri['host'];
}

add_filter('wp_head', 'recaptcha_wp_saved_comment',0);
add_filter('preprocess_comment', 'recaptcha_wp_check_comment',0);
add_filter('comment_post_redirect', 'recaptcha_wp_relative_redirect',0,2);

function recaptcha_wp_add_options_to_admin() {
    global $wpmu;

    if ($wpmu == 1 && is_site_admin()) {
        add_submenu_page('wpmu-admin.php', 'reCAPTCHA', 'reCAPTCHA', 'manage_options', __FILE__, 'recaptcha_wp_options_subpanel');
        add_options_page('reCAPTCHA', 'reCAPTCHA', 'manage_options', __FILE__, 'recaptcha_wp_options_subpanel');
    }
    else if ($wpmu != 1) {
        add_options_page('reCAPTCHA', 'reCAPTCHA', 'manage_options', __FILE__, 'recaptcha_wp_options_subpanel');
    }
}

function recaptcha_wp_options_subpanel() {
    global $wpmu;
    // Default values for the options array
    $optionarray_def = array(
        'pubkey'    => '',
        'privkey'   => '',
        'use_mailhide_posts' => '',
        'use_mailhide_comments' => '',
        'use_mailhide_rss' => '',
        'use_mailhide_rss_comments' => '',
        're_bypasslevel' => '3',
        'mh_bypasslevel' => '3',
        'mailhide_pub' => '',
        'mailhide_priv' => '',
        're_theme' => 'red',
        're_theme_reg' => 'red',
        're_lang' => 'en',
        're_tabindex' => '5',
        're_comments' => '1',
        're_registration' => '1',
        're_xhtml' => '0',
      'mh_replace_link' => '',
      'mh_replace_title' => '',
      'error_blank' => '<strong>ERROR</strong>: Please fill in the reCAPTCHA form.',
      'error_incorrect' => '<strong>ERROR</strong>: That reCAPTCHA response was incorrect.',
    );

    if ($wpmu != 1)
    add_option('recaptcha', $optionarray_def, 'reCAPTCHA Options');

    /* Check form submission and update options if no error occurred */
    if (isset($_POST['submit'])) {
        $optionarray_update = array (
        'pubkey'    => trim($_POST['recaptcha_opt_pubkey']),
        'privkey'   => trim($_POST['recaptcha_opt_privkey']),
        'use_mailhide_posts' => $_POST['use_mailhide_posts'],
        'use_mailhide_comments' => $_POST['use_mailhide_comments'],
        'use_mailhide_rss' => $_POST['use_mailhide_rss'],
        'use_mailhide_rss_comments' => $_POST['use_mailhide_rss_comments'],
        're_bypass' => $_POST['re_bypass'],
        're_bypasslevel' => $_POST['re_bypasslevel'],
        'mailhide_pub' => trim($_POST['mailhide_pub']),
        'mailhide_priv' => trim($_POST['mailhide_priv']),
        'mh_bypass' => $_POST['mh_bypass'],
        'mh_bypasslevel' => $_POST['mh_bypasslevel'],
        're_theme' => $_POST['re_theme'],
        're_theme_reg' => $_POST['re_theme_reg'],
        're_lang' => $_POST['re_lang'],
        're_tabindex' => $_POST['re_tabindex'],
        're_comments' => $_POST['re_comments'],
        're_registration' => $_POST['re_registration'],
        're_xhtml' => $_POST['re_xhtml'],
      'mh_replace_link' => $_POST['mh_replace_link'],
      'mh_replace_title' => $_POST['mh_replace_title'],
      'error_blank' => $_POST['error_blank'],
      'error_incorrect' => $_POST['error_incorrect'],
        );
        // save updated options
        if ($wpmu == 1)
        update_site_option('recaptcha', $optionarray_update);
        else
        update_option('recaptcha', $optionarray_update);
    }

    /* Get options */
    if ($wpmu == 1)
    $optionarray_def = get_site_option('recaptcha');
    else
    $optionarray_def = get_option('recaptcha');

    /* =============================================================================
     reCAPTCHA Admin Page and Functions
     ============================================================================= */

    /*
     * Display an HTML <select> listing the capability options for disabling security
     * for registered users.
     * @param string $select_name slug to use in <select> id and name
     * @param string $checked_value selected value for dropdown, slug form.
     * @return NULL
     */

    function recaptcha_dropdown_capabilities($select_name, $checked_value="") {
        // define choices: Display text => permission slug
        $capability_choices = array (
        'All registered users' => 'read',
        'Edit posts' => 'edit_posts',
        'Publish Posts' => 'publish_posts',
        'Moderate Comments' => 'moderate_comments',
        'Administer site' => 'level_10'
        );
        // print the <select> and loop through <options>
        echo '<select name="' . $select_name . '" id="' . $select_name . '">' . "\n";
        foreach ($capability_choices as $text => $capability) :
        if ($capability == $checked_value) $checked = ' selected="selected" ';
        echo '\t <option value="' . $capability . '"' . $checked . ">$text</option> \n";
        $checked = NULL;
        endforeach;
        echo "</select> \n";
    } // end recaptcha_dropdown_capabilities()

    ?>

<!-- ############################## BEGIN: ADMIN OPTIONS ################### -->
<div class="wrap">
<h2>reCAPTCHA Options</h2>
<h3>About reCAPTCHA</h3>
<p>reCAPTCHA is a free, accessible CAPTCHA service that helps to
digitize books while blocking spam on your blog.</p>

<p>reCAPTCHA asks commenters to retype two words scanned from a book to
prove that they are a human. This verifies that they are not a spambot
while also correcting the automatic scans of old books. So you get less
spam, and the world gets accurately digitized books. Everybody wins! For
details, visit the <a href="http://recaptcha.net/">reCAPTCHA website</a>.</p>
<p><strong>NOTE</strong>: If you are using some form of Cache plugin you
will probably need to flush/clear your cache for changes to take effect.</p>

<form name="form1" method="post"
    action="<?php echo $_SERVER['REDIRECT_SCRIPT_URI'] . '?page=' . plugin_basename(__FILE__); ?>&updated=true">
<div class="submit"><input type="submit" name="submit"
    value="<?php _e('Update Options') ?> &raquo;" /></div>

<!-- ****************** Operands ****************** -->
<table class="form-table">
    <tr valign="top">
        <th scope="row">reCAPTCHA Keys</th>
        <td>reCAPTCHA requires an API key, consisting of a "public" and a
        "private" key. You can sign up for a <a
            href="<?php echo recaptcha_get_signup_url (recaptcha_wp_blog_domain (), 'wordpress');?>"
            target="0">free reCAPTCHA key</a>. <br />
        <p class="re-keys"><!-- reCAPTCHA public key --> <label
            class="which-key" for="recaptcha_opt_pubkey">Public Key:</label> <input
            name="recaptcha_opt_pubkey" id="recaptcha_opt_pubkey" size="40"
            value="<?php  echo $optionarray_def['pubkey']; ?>" /> <br />
        <!-- reCAPTCHA private key --> <label class="which-key"
            for="recaptcha_opt_privkey">Private Key:</label> <input
            name="recaptcha_opt_privkey" id="recaptcha_opt_privkey" size="40"
            value="<?php  echo $optionarray_def['privkey']; ?>" /></p>
        </td>
    </tr>
    <tr valign="top">
        <th scope="row">Comment Options</th>
        <td><!-- Show reCAPTCHA on the comment post --> <big><input
            type="checkbox" name="re_comments" id="re_comments" value="1"
            <?php if($optionarray_def['re_comments'] == true){echo 'checked="checked"';} ?> />
        <label for="re_comments">Enable reCAPTCHA for comments.</label></big>
        <br />
        <!-- Don't show reCAPTCHA to admins -->
        <div class="theme-select"><input type="checkbox" id="re_bypass"
            name="re_bypass"
            <?php if($optionarray_def['re_bypass'] == true){echo 'checked="checked"';} ?> />
        <label name="re_bypass" for="re_bypass">Hide reCAPTCHA for <strong>registered</strong>
        users who can:</label> <?php recaptcha_dropdown_capabilities('re_bypasslevel', $optionarray_def['re_bypasslevel']); // <select> of capabilities ?>
        </div>

        <!-- The theme selection -->
        <div class="theme-select"><label for="re_theme">Theme:</label> <select
            name="re_theme" id="re_theme">
            <option value="red"
            <?php if($optionarray_def['re_theme'] == 'red'){echo 'selected="selected"';} ?>>Red</option>
            <option value="white"
            <?php if($optionarray_def['re_theme'] == 'white'){echo 'selected="selected"';} ?>>White</option>
            <option value="blackglass"
            <?php if($optionarray_def['re_theme'] == 'blackglass'){echo 'selected="selected"';} ?>>Black
            Glass</option>
            <option value="clean"
            <?php if($optionarray_def['re_theme'] == 'clean'){echo 'selected="selected"';} ?>>Clean</option>
        </select></div>
        <!-- Tab Index --> <label for="re_tabindex">Tab Index (<em>e.g. WP: <strong>5</strong>,
        WPMU: <strong>3</strong></em>):</label> <input name="re_tabindex"
            id="re_tabindex" size="5"
            value="<?php  echo $optionarray_def['re_tabindex']; ?>" /> <br />
            <?php global $wpmu; if ($wpmu == 1 || $wpmu == 0) { ?></td>
    </tr>
    <tr valign="top">
        <th scope="row">Registration Options</th>
        <td><!-- Show reCAPTCHA on the registration page --> <big><input
            type="checkbox" name="re_registration" id="re_registration" value="1"
            <?php if($optionarray_def['re_registration'] == true){echo 'checked="checked"';} ?> />
        <label for="re_registration">Enable reCAPTCHA on registration form.</label></big>
        <br />
        <!-- The theme selection -->
        <div class="theme-select"><label for="re_theme_reg">Theme:</label> <select
            name="re_theme_reg" id="re_theme_reg">
            <option value="red"
            <?php if($optionarray_def['re_theme_reg'] == 'red'){echo 'selected="selected"';} ?>>Red</option>
            <option value="white"
            <?php if($optionarray_def['re_theme_reg'] == 'white'){echo 'selected="selected"';} ?>>White</option>
            <option value="blackglass"
            <?php if($optionarray_def['re_theme_reg'] == 'blackglass'){echo 'selected="selected"';} ?>>Black
            Glass</option>
            <option value="clean"
            <?php if($optionarray_def['re_theme_reg'] == 'clean'){echo 'selected="selected"';} ?>>Clean</option>
        </select></div>
        <?php } ?></td>
    </tr>
    <tr valign="top">
        <th scope="row">Error Messages</th>
        <td>
        <p>The following are the messages to display when the user does not
        enter a CAPTCHA response or enters the incorrect CAPTCHA response.</p>
        <!-- Error Messages -->
        <p class="re-keys"><!-- Blank --> <label class="which-key"
            for="error_blank">No response entered:</label> <input
            name="error_blank" id="error_blank" size="80"
            value="<?php echo $optionarray_def['error_blank']; ?>" /> <br />
        <!-- Incorrect --> <label class="which-key" for="error_incorrect">Incorrect
        response entered:</label> <input name="error_incorrect"
            id="error_incorrect" size="80"
            value="<?php echo $optionarray_def['error_incorrect']; ?>" /></p>
        </td>
        </th>
    </tr>
    <tr valign="top">
        <th scope="row">General Settings</th>
        <td><!-- The language selection -->
        <div class="lang-select"><label for="re_lang">Language:</label> <select
            name="re_lang" id="re_lang">
            <option value="en"
            <?php if($optionarray_def['re_lang'] == 'en'){echo 'selected="selected"';} ?>>English</option>
            <option value="nl"
            <?php if($optionarray_def['re_lang'] == 'nl'){echo 'selected="selected"';} ?>>Dutch</option>
            <option value="fr"
            <?php if($optionarray_def['re_lang'] == 'fr'){echo 'selected="selected"';} ?>>French</option>
            <option value="de"
            <?php if($optionarray_def['re_lang'] == 'de'){echo 'selected="selected"';} ?>>German</option>
            <option value="pt"
            <?php if($optionarray_def['re_lang'] == 'pt'){echo 'selected="selected"';} ?>>Portuguese</option>
            <option value="ru"
            <?php if($optionarray_def['re_lang'] == 'ru'){echo 'selected="selected"';} ?>>Russian</option>
            <option value="es"
            <?php if($optionarray_def['re_lang'] == 'es'){echo 'selected="selected"';} ?>>Spanish</option>
            <option value="tr"
            <?php if($optionarray_def['re_lang'] == 'tr'){echo 'selected="selected"';} ?>>Turkish</option>
        </select> </label></div>
        <!-- Whether or not to be XHTML 1.0 Strict compliant --> <input
            type="checkbox" name="re_xhtml" id="re_xhtml" value="1"
            <?php if($optionarray_def['re_xhtml'] == true){echo 'checked="checked"';} ?> />
        <label for="re_xhtml">Be XHTML 1.0 Strict compliant. <strong>Note</strong>:
        Bad for users who don't have Javascript enabled in their browser
        (Majority do).</label> <br />
        </td>
    </tr>
</table>

<h3>About MailHide</h3>
<p><a href="http://mailhide.recaptcha.net/"
    title="mailhide email obfuscation">MailHide</a> uses reCAPTCHA to
protect email adresses displayed on your blog from being harvested for
spam.</p>
<p>Activating MailHide will automatically hide all emails in posts and
comments from spam bots. For example, support@recaptcha.net would become
supp<a
    href="http://mailhide.recaptcha.net/d?k=01a8k2oW96qNZ4JhiFx5zDRg==&amp;c=yifPREOOvfzA0o3dbnnwP8fy91UD8RL4SspHDIKHVRE="
    onclick="window.open('http://mailhide.recaptcha.net/d?k=01a8k2oW96qNZ4JhiFx5zDRg==&amp;c=yifPREOOvfzA0o3dbnnwP8fy91UD8RL4SspHDIKHVRE=', '', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=500,height=300'); return false;"
    title="Reveal this e-mail address">...</a>@recaptcha.net. There are
also options below for choosing the text to show for hidden emails.</p>
<p>MailHide also requires a public and private key which you can
generate using the <a href="http://mailhide.recaptcha.net/apikey">key
generation service</a>.</p>
<table class="form-table">
    <tr valign="top">
        <th scope="row">MailHide Keys</th>
        <td><!-- MailHide Enabler --> <big>Enable MailHide email obfuscation
        for:</big><br />
        <input type="checkbox" name="use_mailhide_posts"
            id="use_mailhide_posts" value="1"
            <?php if($optionarray_def['use_mailhide_posts'] == true){echo 'checked="checked"';} ?> /><label
            for="use_mailhide_posts">Posts/Pages</label><br />
        <input type="checkbox" name="use_mailhide_comments"
            id="use_mailhide_comments" value="1"
            <?php if($optionarray_def['use_mailhide_comments'] == true){echo 'checked="checked"';} ?> /><label
            for="use_mailhide_comments">Comments</label><br />
        <input type="checkbox" name="use_mailhide_rss" id="use_mailhide_rss"
            value="1"
            <?php if($optionarray_def['use_mailhide_rss'] == true){echo 'checked="checked"';} ?> /><label
            for="use_mailhide_rss">RSS Feed of Posts/Pages</label><br />
        <input type="checkbox" name="use_mailhide_rss_comments"
            id="use_mailhide_rss_comments" value="1"
            <?php if($optionarray_def['use_mailhide_rss_comments'] == true){echo 'checked="checked"';} ?> /><label
            for="use_mailhide_rss_comments">RSS Feed of Comments</label><br />
        <!-- Public Key -->
        <p class="re-keys"><label class="which-key" for="mailhide_pub">Public
        Key:</label> <input name="mailhide_pub" id="mailhide_pub" size="40"
            value="<?php echo $optionarray_def['mailhide_pub']; ?>" /> <br />
        <!-- Private Key --> <label class="which-key" for="mailhide_priv">Private
        Key:</label> <input name="mailhide_priv" id="mailhide_priv" size="40"
            value="<?php echo $optionarray_def['mailhide_priv']; ?>" /></p>
        </td>
    </tr>
    <tr valign="top">
        <th scope="row">Visibility Options</th>
        <td><!-- Don't show mailhide to users who can... -->
        <div class="theme-select"><input type="checkbox" id="mh_bypass"
            name="mh_bypass"
            <?php if($optionarray_def['mh_bypass'] == true){echo 'checked="checked"';} ?> />
        <label for="mh_bypass">Show full email adresses to <strong>registered</strong>
        users who can:</label> <?php recaptcha_dropdown_capabilities('mh_bypasslevel', $optionarray_def['mh_bypasslevel']); // <select> of capabilities ?>
        </div>
        <!-- Email Replacement Text -->
        <p class="re-keys">
        <p>The following allows you to show the replaced links differently.
        Usually, you get something like this, supp<a
            href="http://mailhide.recaptcha.net/d?k=01a8k2oW96qNZ4JhiFx5zDRg==&amp;c=yifPREOOvfzA0o3dbnnwP8fy91UD8RL4SspHDIKHVRE="
            onclick="window.open('http://mailhide.recaptcha.net/d?k=01a8k2oW96qNZ4JhiFx5zDRg==&amp;c=yifPREOOvfzA0o3dbnnwP8fy91UD8RL4SspHDIKHVRE=', '', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=500,height=300'); return false;"
            title="Reveal this e-mail address">...</a>@recaptcha.net , where the
        email is broken up into two pieces and then a link with dots is placed
        in the middle. The <strong>Email Replacement Text</strong> value lets
        you choose what to name the link and then the <strong>Reveal Link
        Title</strong> value determines the text that is shown when the link
        is hovered over.</p>
        <p>For example, if the <strong>Email Replacement Text</strong> option
        is set to <strong>HIDDEN EMAIL</strong> and the <strong>Reveal Link
        Title</strong> option is set to <strong>Click here to reveal this
        address</strong>, then ALL emails will be hidden like this: <a
            href="http://mailhide.recaptcha.net/d?k=01a8k2oW96qNZ4JhiFx5zDRg==&amp;c=yifPREOOvfzA0o3dbnnwP8fy91UD8RL4SspHDIKHVRE="
            onclick="window.open('http://mailhide.recaptcha.net/d?k=01a8k2oW96qNZ4JhiFx5zDRg==&amp;c=yifPREOOvfzA0o3dbnnwP8fy91UD8RL4SspHDIKHVRE=', '', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=500,height=300'); return false;"
            title="Click here to reveal this address">HIDDEN EMAIL</a></p>
        <p>If you want to maintain the default method of hiding emails then
        leave both boxes blank.</p>
        <label class="whch-key" for="mh_replace_link">EMail Replacement Text:</label>
        <input name="mh_replace_link" id="mh_replace_link" size="40"
            value="<?php echo $optionarray_def['mh_replace_link']; ?>" /> <br />
        <label class="which-key" for="mh_replace_title">Reveal Link Title:</label>
        <input name="mh_replace_title" id="mh_replace_title" size="40"
            value="<?php echo $optionarray_def['mh_replace_title']; ?>" /></p>
        </td>
    </tr>
    <tr valign="top">
        <th scope="row">Other Information</th>
        <td><!-- MailHide CSS -->
        <p>CSS: You can style the hidden emails and much more in the <strong>recaptcha.css</strong>
        stylesheet in wp-recaptcha's plugin folder.</p>
        <p>You can bypass email hiding for an address by enclosing it within <strong>[nohide][/nohide]</strong>,
        ex. [nohide]some@email.com[/nohide].</p>
        </td>
    </tr>
</table>
<div class="submit"><input type="submit" name="submit"
    value="<?php _e('Update Options') ?> &raquo;" /></div>

</form>
<p class="copyright">&copy; Copyright 2008&nbsp;&nbsp;<a
    href="http://recaptcha.net">reCAPTCHA</a></p>
</div>
<!-- [wrap] -->
<!-- ############################## END: ADMIN OPTIONS ##################### -->

            <?php
}

/* =============================================================================
 Apply the admin menu
 ============================================================================= */

add_action('admin_menu', 'recaptcha_wp_add_options_to_admin');

// If no reCAPTCHA API keys have been entered
if ( !($recaptcha_opt ['pubkey'] && $recaptcha_opt['privkey'] ) && !isset($_POST['submit']) ) {
    function recaptcha_warning() {
        global $wpmu;

        $path = plugin_basename(__FILE__);
        $top = 0;
        if ($wp_version <= 2.5)
        $top = 12.7;
        else
        $top = 7;
        echo "
        <div id='recaptcha-warning' class='updated fade-ff0000'><p><strong>reCAPTCHA is not active</strong> You must <a href='options-general.php?page=" . $path . "'>enter your reCAPTCHA API key</a> for it to work</p></div>
        <style type='text/css'>
        #adminmenu { margin-bottom: 5em; }
        #recaptcha-warning { position: absolute; top: {$top}em; }
        </style>
        ";
    }

    if (($wpmu == 1 && is_site_admin()) || $wpmu != 1)
    add_action('admin_footer', 'recaptcha_warning');

    return;
}

$mailhide_enabled = ($recaptcha_opt['use_mailhide_posts'] || $recaptcha_opt['use_mailhide_comments'] || $recaptcha_opt['use_mailhide_rss'] || $recaptcha_opt['use_mailhide_rss_comments']);

// If the mcrypt PHP module isn't loaded then display an alert
if (($mailhide_enabled && !extension_loaded('mcrypt')) && !isset($_POST['submit'])) {
    function mcrypt_warning() {
        global $wpmu;

        $path = plugin_basename(__FILE__);
        $top = 0;
        if ($wp_version <= 2.5)
        $top = 12.7;
        else
        $top = 7;
        echo "
        <div id='recaptcha-warning' class='updated fade-ff0000'><p><strong>MailHide is not active</strong> You must have the <a href='http://us3.php.net/mcrypt'>mcrypt</a> module loaded for it to work</p></div>
        <style type='text/css'>
        #adminmenu { margin-bottom: 5em; }
        #recaptcha-warning { position: absolute; top: {$top}em; }
        </style>
        ";
    }

    if (($wpmu == 1 && is_site_admin()) || $wpmu != 1)
    add_action('admin_footer', 'mcrypt_warning');

    return;
}

// If MailHide is enabled but no keys have been entered
if ($mailhide_enabled && !($recaptcha_opt['mailhide_pub'] && $recaptcha_opt['mailhide_pub']) && !isset($_POST['submit'])) {
    function mailhide_warning() {
        global $wpmu;

        $path = plugin_basename(__FILE__);
        $top = 0;

        if ($wp_version <= 2.5)
        $top = 12.7;
        else
        $top = 7;

        echo "
        <div id='recaptcha-warning' class='updated fade-ff0000'><p><strong>MailHide is not active</strong> You must <a href='options-general.php?page=" . $path . "'>enter your MailHide API keys</a> for it to work</p></div>
        <style type='text/css'>
        #adminmenu { margin-bottom: 5em; }
        #recaptcha-warning { position: absolute; top: {$top}em; }
        </style>
        ";
    }

    if (($wpmu == 1 && is_site_admin()) || $wpmu != 1)
    add_action('admin_footer', 'mailhide_warning');

    return;
}

/* =============================================================================
 End Apply the admin menu
 ============================================================================= */
?>