ID * strlen(ABSPATH);
}
/* This adds a random hidden field to the form */
function hashcash_add_hidden_tag($page) {
global $posts, $single;
if ($single){
$field_id = hashcash_random_string(rand(6,18));
$field_name = hashcash_random_string(rand(6,18));
$form_action = hashcash_random_string(rand(6,18));
// Write in hidden field
$page = str_replace(' ', '', $page);
}
return $page;
}
function hashcash_call_stopgap() {
ob_start('hashcash_add_hidden_tag');
}
add_action('wp_head', 'hashcash_call_stopgap');
function write_comment_log($comment){
if ( !HASHCASH_DEBUG || !function_exists('fopen') || !function_exists('fclose') || !function_exists('fwrite') )
return;
/* Information to write to log */
$user = array();
$user[] = date("F j, Y, g:i a");
$user[] = $_SERVER['REMOTE_ADDR'];
$user[] = $_SERVER['HTTP_USER_AGENT'];
$user[] = $_SERVER['HTTP_REFERER'];
$user[] = $_POST['author'];
$user[] = $_POST['email'];
$user[] = $_POST['url'];
$user[] = preg_replace('/[\n\r]+/','
', $comment);
$user[] = $_POST['comment_post_ID'];
/* Open the file */
$path = ABSPATH . "wp-content/plugins/wp-hashcash.log";
$file = fopen($path, 'a');
if(!$file){
die("File \"$path\" failed to open");
} else{
$msg = '';
for($i = 0; $i < count($user); $i++){
$msg .= $user[$i] . "\n";
}
$status = fwrite($file, $msg);
fclose($file);
if(!status){
die("Spam-log write failed...");
}
}
/* If we're here, the file exists. Check size, email every 64kb */
if(filesize($path) > HASHCASH_LOG_SIZE){
$header = "Spam Report:
";
$footer = "";
$temp = file($path);
if(!$temp){
die("Unable to open $path for email report...");
} else{
// Process log
$log = $header;
$i = false;
// Get some statistics
$count = count($temp) / 9;
$log .= "There were $count spam...
";
// Table
$log .= "";
for($j = 0; $j < count($temp); $j++){
if($i){
$log .= '';
} else{
$log .= '
';
}
$log .= "";
$log .= $temp[$j]; $j++;
$log .= "";
$log .= "IP: $temp[$j]
"; $j++;
$log .= "User-Agent: $temp[$j]
"; $j++;
$log .= "Referer: $temp[$j]
"; $j++;
$log .= "Author: $temp[$j]
"; $j++;
$log .= "Email: $temp[$j]
"; $j++;
$log .= "URL: $temp[$j]
"; $j++;
$log .= "
";
$log .= $temp[$j]; $j++;
$log .= "
";
$log .= "on post " . $temp[$j] . "";
$log .= " ";
$log .=" | ";
$log .= "
";
$i = !$i;
}
$log .= "
";
// Footer
$log .= $footer;
// Send email
$headers = "Content-type: text/html; charset=" . get_settings('blog_charset') . "\r\n";
@mail(get_settings('admin_email'), "Spam report for " . get_settings('blogname'), $log, $headers);
// Clear file
$file = fopen($path, 'w');
if(!file){
die("Unable to truncate old log file");
} else{
fclose($file);
}
}
}
}
function hashcash_check_hidden_tag($comment) {
// Our special codes, fixed to check the previous hour
$special = array();
$special[] = md5($_SERVER['REMOTE_ADDR'] . ABSPATH . $_SERVER['HTTP_USER_AGENT'] . date("F j, Y, g a"));
$special[] = md5($_SERVER['REMOTE_ADDR'] . ABSPATH . $_SERVER['HTTP_USER_AGENT'] . date("F j, Y, g a", time()-(60*60)));
$special[] = md5(session_id() . ABSPATH . $_SERVER['HTTP_USER_AGENT'] . date("F j, Y, g a"));
$special[] = md5(session_id() . ABSPATH . $_SERVER['HTTP_USER_AGENT'] . date("F j, Y, g a", time()-(60*60)));
foreach($special as $val){
if($_POST[md5($val)] == ($_POST['comment_post_ID'] * strlen(ABSPATH) )){
return $comment;
}
}
if(HASHCASH_DEBUG){
write_comment_log($comment);
}
die();
}
add_filter('post_comment_text', 'hashcash_check_hidden_tag');
?>