解决discuz:您当前的访问请求当中含有非法字符

Discuz! x3 x3.1 x3.2您当前的访问请求当中含有非法字符,已经被系统拒绝,故障描述:升级最新的x3.1 X3.2 版本((20131122)后,退出登录时出现”您当前的访问请求当中含有非法字符,已经被系统拒绝“错误。

解决办法如下:找到\source\class\discuz的discuz_application.php,打开

查找代码:
private function _xss_check() {
static $check = array('"', '>', '<', '\'', '(', ')', 'CONTENT-TRANSFER-ENCODING');
if(isset($_GET['formhash']) && $_GET['formhash'] !== formhash()) {
system_error('request_tainting');
}
if($_SERVER['REQUEST_METHOD'] == 'GET' ) {
$temp = $_SERVER['REQUEST_URI'];
} elseif(empty ($_GET['formhash'])) {
$temp = $_SERVER['REQUEST_URI'].file_get_contents('php://input');
} else {
$temp = '';
}
if(!empty($temp)) {
$temp = strtoupper(urldecode(urldecode($temp)));
foreach ($check as $str) {
if(strpos($temp, $str) !== false) {
system_error('request_tainting');
}
}
}
return true;
}

替换为:
private function _xss_check() {
$temp = strtoupper(urldecode(urldecode($_SERVER['REQUEST_URI'])));
if(strpos($temp, '<') !== false || strpos($temp, '"') !== false || strpos($temp, 'CONTENT-TRANSFER-ENCODING') !== false) {
system_error('request_tainting');
}
return true;
}

保存后,在论坛后台更新缓存即可。