该问题存在于任何CDN产品,如果您使用了CDN产品,该Discuz方法都适用。
该问题导致的结果:
1.Discuz论坛可能无法获得用户的真实IP,导致某些用户IP显示的是加速乐节点的IP
2.论坛访问量过大的话,可能会导致用户访问时提示“抱歉,您的 IP 地址不在被允许,或您的账号被禁用,无法访问本站点”
产生原因:
使用CDN,对于网站访客来说,相当于使用了代理访问,而Discuz在设计上,是优先获取代理IP,其它才会检测代理服务器是否将用户真实IP传输过来,也就是说获取代理IP优先于用户真实IP。如果您的网站不需要对用户访问做过多的限制,强烈建议按照以下方
进行:
解决方法(Discuz X2):
打开Discuz /source/class/class_core.php 文件
找到第341行,或者搜索“HTTP_CLIENT_IP”,找到如下代码:
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;
}
将以上代码修改为:
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;
}
解决方法(Discuz x2.5)
打开文件/source/class/discuz/discuz_application.php 找到如下代码:
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;
}
将其修改为:
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,登陆CDN后台和你的Discuz论坛后台分别清除缓存即可。
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