該問題存在于任何CDN產品,如果您使用了CDN產品,該Discuz方法都適用。
該問題導致的結果:
1.Discuz論壇可能無法獲得用戶的真實IP,導致某些用戶IP顯示的是加速樂節(jié)點的IP
2.論壇訪問量過大的話,可能會導致用戶訪問時提示“抱歉,您的 IP 地址不在被允許,或您的賬號被禁用,無法訪問本站點”
產生原因:
使用CDN,對于網站訪客來說,相當于使用了代理訪問,而Discuz在設計上,是優(yōu)先獲取代理IP,其它才會檢測代理服務器是否將用戶真實IP傳輸過來,也就是說獲取代理IP優(yōu)先于用戶真實IP。如果您的網站不需要對用戶訪問做過多的限制,強烈建議按照以下方法進行:
解決方法(Discuz X2):
打開Discuz /source/class/class_core.php 文件
找到第341行,或者搜索“HTTP_CLIENT_IP”,找到如下代碼:
代碼如下:
function _get_client_ip() {
$ip = $_SERVER['REMOTE_ADDR'];
if (isset($_SERVER['HTTP_CLIENT_IP']) && preg_match('/^([0-9]{1,3}\.){3}[0-9]{1,3}$/', $_SERVER['HTTP_CLIENT_IP'])) {
$ip = $_SERVER['HTTP_CLIENT_IP'];
} elseif(isset($_SERVER['HTTP_X_FORWARDED_FOR']) AND preg_match_all('#\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}#s', $_SERVER['HTTP_X_FORWARDED_FOR'], $matches)) {
foreach ($matches[0] AS $xip) {
if (!preg_match('#^(10|172\.16|192\.168)\.#', $xip)) {
$ip = $xip;
break;
}
}
}
return $ip;
}
將以上代碼修改為:
代碼如下:
function _get_client_ip() {
$ip = $_SERVER['REMOTE_ADDR'];
if (isset($_SERVER['HTTP_X_REAL_FORWARDED_FOR']) && preg_match('/^([0-9]{1,3}\.){3}[0-9]{1,3}$/', $_SERVER['HTTP_X_REAL_FORWARDED_FOR'])) {
$ip = $_SERVER['HTTP_X_REAL_FORWARDED_FOR'];
}
elseif (isset($_SERVER['HTTP_X_FORWARDED_FOR']) && preg_match('/^([0-9]{1,3}\.){3}[0-9]{1,3}$/', $_SERVER['HTTP_X_FORWARDED_FOR'])) {
$ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
}
elseif (isset($_SERVER['HTTP_CLIENT_IP']) && preg_match('/^([0-9]{1,3}\.){3}[0-9]{1,3}$/', $_SERVER['HTTP_CLIENT_IP'])) {
$ip = $_SERVER['HTTP_CLIENT_IP'];
}
return $ip;
}
解決方法(Discuz x2.5)
打開文件\source\class\discuz\discuz_application.php 找到如下代碼:
代碼如下:
private function _get_client_ip() {
$ip = $_SERVER['REMOTE_ADDR'];
if (isset($_SERVER['HTTP_CLIENT_IP']) && preg_match('/^([0-9]{1,3}\.){3}[0-9]{1,3}$/', $_SERVER['HTTP_CLIENT_IP'])) {
$ip = $_SERVER['HTTP_CLIENT_IP'];
} elseif(isset($_SERVER['HTTP_X_FORWARDED_FOR']) AND preg_match_all('#\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}#s', $_SERVER['HTTP_X_FORWARDED_FOR'], $matches)) {
foreach ($matches[0] AS $xip) {
if (!preg_match('#^(10|172\.16|192\.168)\.#', $xip)) {
$ip = $xip;
break;
}
}
}
return $ip;
}
將其修改為:
代碼如下:
private function _get_client_ip() {
$ip = $_SERVER['REMOTE_ADDR'];
if (isset($_SERVER['HTTP_X_REAL_FORWARDED_FOR']) && preg_match('/^([0-9]{1,3}\.){3}[0-9]{1,3}$/', $_SERVER['HTTP_X_REAL_FORWARDED_FOR'])) {
$ip = $_SERVER['HTTP_X_REAL_FORWARDED_FOR'];
}
elseif (isset($_SERVER['HTTP_X_FORWARDED_FOR']) && preg_match('/^([0-9]{1,3}\.){3}[0-9]{1,3}$/', $_SERVER['HTTP_X_FORWARDED_FOR'])) {
$ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
}
elseif (isset($_SERVER['HTTP_CLIENT_IP']) && preg_match('/^([0-9]{1,3}\.){3}[0-9]{1,3}$/', $_SERVER['HTTP_CLIENT_IP'])) {
$ip = $_SERVER['HTTP_CLIENT_IP'];
}
return $ip;
}
以上操作后,登陸CDN后臺和你的Discuz論壇后臺分別清除緩存即可。
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