UCenter防止恶意访问(安全加固)
功能说明:uc_server/consoler.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:
一、路径:uc_server/model/admin.php
1.搜索
$this->cookie_status = isset($_COOKIE['sid']) ? 1 : 0;
2.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; } }
注意:其中这里增加用户组:
array('1','2')
二、路径:uc_server/model/admin.php
1.搜索
function __construct() { $this->adminbase(); }
2.后面加入
function dauthcode($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)); } }
至此,UCenter防止恶意访问(安全加固)修改完毕。
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