WordPress自动将包含长链接的评论标记为垃圾评论的方法

代码如下:

// 垃圾评论拦截 
class anti_spam { 
function anti_spam() { 
if ( !current_user_can('level_0') ) { 
add_action('template_redirect', array($this, 'w_tb'), 1); 
add_action('init', array($this, 'gate'), 1); 
add_action('preprocess_comment', array($this, 'sink'), 1); 
} 
} 
function w_tb() { 
if ( is_singular() ) { 
ob_start(create_function('$input','return preg_replace("#textarea(.*?)name=(["'])comment(["'])(.+)/textarea>#", 
"textarea$1name=$2w$3$4/textarea><textarea name="comment" cols="100%" rows="4" style="display:none"></textarea>",$input);') ); 
} 
} 
function gate() { 
if ( !emptyempty($_POST['w']) && emptyempty($_POST['comment']) ) { 
$_POST['comment'] = $_POST['w']; 
} else { 
$request = $_SERVER['REQUEST_URI']; 
$referer = isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '隐瞒'; 
$IP = isset($_SERVER["HTTP_X_FORWARDED_FOR"]) ? $_SERVER["HTTP_X_FORWARDED_FOR"] . ' (透过代理)' : $_SERVER["REMOTE_ADDR"]; 
$way = isset($_POST['w']) ? '手动操作' : '未经评论表格'; 
$spamcom = isset($_POST['comment']) ? $_POST['comment'] : null; 
$_POST['spam_confirmed'] = "请求: ". $request. "n来路: ". $referer. "nIP: ". $IP. "n方式: ". $way. "n?热? ". $spamcom. "n — 记录成功 –"; 
} 
} 
function sink( $comment ) { 
if ( !emptyempty($_POST['spam_confirmed']) ) { 
if ( in_array( $comment['comment_type'], array('pingback', 'trackback') ) ) return $comment; 
//方法一: 直接挡掉, ? die(); 前面两斜线?h除即可. 
die(); 
//方法二: 标记为 spam, 留在资料库检查是否误判. 
//add_filter('pre_comment_approved', create_function('', 'return "spam";')); 
//$comment['comment_content'] = "[ 小墙判断这是 Spam! ]n". $_POST['spam_confirmed']; 
} 
return $comment; 
} 
} 
$anti_spam = new anti_spam();

代码如下:

function in_comment_post_like($string, $array) { 
foreach($array as $ref) { if(strstr($string, $ref)) { return true; } } 
return false; 
} 
function drop_bad_comments() { 
if (!emptyempty($_POST['comment'])) { 
$post_comment_content = $_POST['comment']; 
$lower_case_comment = strtolower($_POST['comment']); 
$bad_comment_content = array( 
'viagra', 
'hydrocodone', 
'hair loss', 
'xanax', 
'tramadol', 
'russian girls', 
'russian brides', 
'lorazepam', 
'adderall', 
'dexadrine', 
'no prescription', 
'oxycontin', 
'without a prescription', 
'sex pics', 
'family incest', 
'online casinos', 
'online dating', 
'cialis', 
'best forex', 
'amoxicillin' 
); 
if (in_comment_post_like($lower_case_comment, $bad_comment_content)) { 
$comment_box_text = wordwrap(trim($post_comment_content), 80, "n ", true); 
$txtdrop = fopen('/var/log/httpd/wp_post-logger/nullamatix.com-text-area_dropped.txt', 'a'); 
fwrite($txtdrop, " ————–n [COMMENT] = " . $post_comment_content . "n ————–n"); 
fwrite($txtdrop, " [SOURCE_IP] = " . $_SERVER['REMOTE_ADDR'] . " @ " . date("F j, Y, g:i a") . "n"); 
fwrite($txtdrop, " [USERAGENT] = " . $_SERVER['HTTP_USER_AGENT'] . "n"); 
fwrite($txtdrop, " [REFERER ] = " . $_SERVER['HTTP_REFERER'] . "n"); 
fwrite($txtdrop, " [FILE_NAME] = " . $_SERVER['SCRIPT_NAME'] . " – [REQ_URI] = " . $_SERVER['REQUEST_URI'] . "n"); 
fwrite($txtdrop, '————–**********——————'."n"); 
header("HTTP/1.1 406 Not Acceptable"); 
header("Status: 406 Not Acceptable"); 
header("Connection: Close"); 
wp_die( __('bang bang.') ); 
} 
} 
} 
add_action('init', 'drop_bad_comments');

代码如下:

function rkv_url_spamcheck( $approved , $commentdata ) { 
return ( strlen( $commentdata['comment_author_url'] ) > 50 ) ? 'spam' : $approved; 
} 
add_filter( 'pre_comment_approved', 'rkv_url_spamcheck', 99, 2 );