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功能说明:uc_server/admin.php是ucenter默认的后台地址,正常情况下可以直接访问,为了防止某些恶意访问的情况,可以修改以下内容进行安全性能提升。
适用版本:Discuz!x1-x3.4适用情况:ucenter在论坛根目录下
修改后效果:未登录Discuz论坛或不在指定的管理组,打开uc_server/admin.php提示404
具体实施方案:
打开uc_server/model/admin.php
搜索
- $this->cookie_status = isset($_COOKIE['sid']) ? 1 : 0;
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在下面加入以下代码
- if(!$this->cookie_status){
- include UC_ROOT.'../config/config_global.php';
- $cookiepre = $_config['cookie']['cookiepre'].substr(md5($_config['cookie']['cookiepath'].'|'.$_config['cookie']['cookiedomain']), 0, 4).'_';
- $auth = addslashes($_COOKIE[$cookiepre.'auth']);
- if(empty($_config['cookie']['saltkey'])) {
- $_config['cookie']['saltkey'] = addslashes($_COOKIE[$cookiepre.'saltkey']);
- }
- $authkey = md5($_config['security']['authkey'].$_config['cookie']['saltkey']);
- $auth = daddslashes(explode("\t", $this->dauthcode($auth, 'DECODE',$authkey)));
- list($discuz_pw, $discuz_uid) = empty($auth) || count($auth) < 2 ? array('', '') : $auth;
- $discuz_uid = intval($discuz_uid);
- $groupid = $this->db->result_first("SELECT groupid FROM ".$_config['db'][1]['tablepre']."common_member WHERE uid='$discuz_uid'");
- if(!in_array($groupid,array('1','2'))){
- header("HTTP/1.1 404 Not Found");header("Status: 404 Not Found");exit;
- }
- }
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其中这里增加用户组:
搜索代码:
- function __construct() {
- $this->adminbase();
- }
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再上面代码下面加入代码:
- function dauthcode($string, $operation = 'DECODE', $key = '', $expiry = 0) {
- $ckey_length = 4;
- $key = md5($key );
- $keya = md5(substr($key, 0, 16));
- $keyb = md5(substr($key, 16, 16));
- $keyc = $ckey_length ? ($operation == 'DECODE' ? substr($string, 0, $ckey_length): substr(md5(microtime()), -$ckey_length)) : '';
- $cryptkey = $keya.md5($keya.$keyc);
- $key_length = strlen($cryptkey);
- $string = $operation == 'DECODE' ? base64_decode(substr($string, $ckey_length)) : sprintf('%010d', $expiry ? $expiry + time() : 0).substr(md5($string.$keyb), 0, 16).$string;
- $string_length = strlen($string);
- $result = '';
- $box = range(0, 255);
- $rndkey = array();
- for($i = 0; $i <= 255; $i++) {
- $rndkey[$i] = ord($cryptkey[$i % $key_length]);
- }
- for($j = $i = 0; $i < 256; $i++) {
- $j = ($j + $box[$i] + $rndkey[$i]) % 256;
- $tmp = $box[$i];
- $box[$i] = $box[$j];
- $box[$j] = $tmp;
- }
- for($a = $j = $i = 0; $i < $string_length; $i++) {
- $a = ($a + 1) % 256;
- $j = ($j + $box[$a]) % 256;
- $tmp = $box[$a];
- $box[$a] = $box[$j];
- $box[$j] = $tmp;
- $result .= chr(ord($string[$i]) ^ ($box[($box[$a] + $box[$j]) % 256]));
- }
- if($operation == 'DECODE') {
- if((substr($result, 0, 10) == 0 || substr($result, 0, 10) - time() > 0) && substr($result, 10, 16) == substr(md5(substr($result, 26).$keyb), 0, 16)) {
- return substr($result, 26);
- } else {
- return '';
- }
- } else {
- return $keyc.str_replace('=', '', base64_encode($result));
- }
- }
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后台更新缓存,大功告成!
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