$antispam_send_spam_comment_to_admin,
'allow_trackbacks' => $antispam_allow_trackbacks,
'admin_email' => get_option('admin_email')
);
include('anti-spam-functions.php');
include('anti-spam-info.php');
function antispam_enqueue_script() {
if (is_singular() && comments_open()) { // load script only for pages with comments form
wp_enqueue_script('anti-spam-script', plugins_url('/js/anti-spam-4.0.js', __FILE__), null, null, true);
}
}
add_action('wp_enqueue_scripts', 'antispam_enqueue_script');
function antispam_form_part() {
global $antispam_settings;
$rn = "\r\n"; // .chr(13).chr(10)
if ( ! is_user_logged_in()) { // add anti-spam fields only for not logged in users
echo '
'.$rn; // question (hidden with js)
echo '
'.$rn; // empty field (hidden with css); trap for spammers because many bots will try to put email or url here
}
}
add_action('comment_form', 'antispam_form_part'); // add anti-spam inputs to the comment form
function antispam_check_comment($commentdata) {
global $antispam_settings;
$rn = "\r\n"; // .chr(13).chr(10)
extract($commentdata);
$antispam_pre_error_message = '
';
$antispam_error_message = '';
if ($antispam_settings['send_spam_comment_to_admin']) { // if sending email to admin is enabled
$post = get_post($comment->comment_post_ID);
$antispam_message_spam_info = 'Spam for post: "'.$post->post_title.'"' . $rn;
$antispam_message_spam_info .= get_permalink($comment->comment_post_ID) . $rn.$rn;
$antispam_message_spam_info .= 'IP: ' . $_SERVER['REMOTE_ADDR'] . $rn;
$antispam_message_spam_info .= 'User agent: ' . $_SERVER['HTTP_USER_AGENT'] . $rn;
$antispam_message_spam_info .= 'Referer: ' . $_SERVER['HTTP_REFERER'] . $rn.$rn;
$antispam_message_spam_info .= 'Comment data:'.$rn; // lets see what comment data spammers try to submit
foreach ($commentdata as $key => $value) {
$antispam_message_spam_info .= '$commentdata['.$key. '] = '.$value.$rn;
}
$antispam_message_spam_info .= $rn.$rn;
$antispam_message_spam_info .= 'Post vars:'.$rn; // lets see what post vars spammers try to submit
foreach ($_POST as $key => $value) {
$antispam_message_spam_info .= '$_POST['.$key. '] = '.$value.$rn;
}
$antispam_message_spam_info .= $rn.$rn;
$antispam_message_spam_info .= 'Cookie vars:'.$rn; // lets see what cookie vars spammers try to submit
foreach ($_COOKIE as $key => $value) {
$antispam_message_spam_info .= '$_COOKIE['.$key. '] = '.$value.$rn;
}
$antispam_message_spam_info .= $rn.$rn;
$antispam_message_append = '-----------------------------'.$rn;
$antispam_message_append .= 'This is spam comment rejected by Anti-spam plugin - wordpress.org/plugins/anti-spam/' . $rn;
$antispam_message_append .= 'You may edit "anti-spam.php" file and disable this notification.' . $rn;
$antispam_message_append .= 'You should find "$antispam_send_spam_comment_to_admin" and make it equal to "false".' . $rn;
}
if ( ! is_user_logged_in() && $comment_type != 'pingback' && $comment_type != 'trackback') { // logged in user is not a spammer
$spam_flag = false;
if ( trim($_POST['antspm-q']) != date('Y') ) { // year-answer is wrong - it is spam
if ( trim($_POST['antspm-d']) != date('Y') ) { // extra js-only check: there is no js added input - it is spam
$spam_flag = true;
if (empty($_POST['antspm-q'])) { // empty answer - it is spam
$antispam_error_message .= 'Error: empty answer. ['.$_POST['antspm-q'].'] '.$rn;
} else {
$antispam_error_message .= 'Error: answer is wrong. ['.$_POST['antspm-q'].'] '.$rn;
}
}
}
if ( ! empty($_POST['antspm-e-email-url-website'])) { // trap field is not empty - it is spam
$spam_flag = true;
$antispam_error_message .= 'Error: field should be empty. ['.$_POST['antspm-e-email-url-website'].'] '.$rn;
}
if ($spam_flag) { // it is spam
$antispam_error_message .= 'Comment was blocked because it is spam. ';
if ($antispam_settings['send_spam_comment_to_admin']) {
$antispam_subject = 'Spam comment on site ['.get_bloginfo('name').']'; // email subject
$antispam_message = '';
$antispam_message .= $antispam_error_message . $rn.$rn;
$antispam_message .= $antispam_message_spam_info; // spam comment, post, cookie and other data
$antispam_message .= $antispam_message_append;
@wp_mail($antispam_settings['admin_email'], $antispam_subject, $antispam_message); // send spam comment to admin email
}
antispam_log_stats();
wp_die( $antispam_pre_error_message . $antispam_error_message ); // die - do not send comment and show errors
}
}
if ( ! $antispam_settings['allow_trackbacks']) { // if trackbacks are blocked (pingbacks are alowed)
if ($comment_type == 'trackback') { // if trackbacks ( || $comment_type == 'pingback')
$antispam_error_message .= 'Error: trackbacks are disabled. ';
if ($antispam_settings['send_spam_comment_to_admin']) { // if sending email to admin is enabled
$antispam_subject = 'Spam trackback on site ['.get_bloginfo('name').']'; // email subject
$antispam_message = '';
$antispam_message .= $antispam_error_message . $rn.$rn;
$antispam_message .= $antispam_message_spam_info; // spam comment, post, cookie and other data
$antispam_message .= $antispam_message_append;
@wp_mail($antispam_settings['admin_email'], $antispam_subject, $antispam_message); // send trackback comment to admin email
}
antispam_log_stats();
wp_die($antispam_pre_error_message . $antispam_error_message); // die - do not send trackback
}
}
return $commentdata; // if comment does not looks like spam
}
if ( ! is_admin()) {
add_filter('preprocess_comment', 'antispam_check_comment', 1);
}
function antispam_plugin_meta($links, $file) { // add some links to plugin meta row
if (strpos($file, 'anti-spam/anti-spam.php') !== false) {
$links = array_merge($links, array('Anti-spam'));
$links = array_merge($links, array('Donate'));
$links = array_merge($links, array('Anti-spam Pro'));
}
return $links;
}
add_filter('plugin_row_meta', 'antispam_plugin_meta', 10, 2);