destoon二次开发必读：destoon启动流程

destoon首页代码包含common.inc.php这个配置文件文件，在common.inc.php文件中，首先定义常量。如下：
<?php

define(‘IN_DESTOON’, true);

define(‘IN_ADMIN’, defined(‘DT_ADMIN’) ? true : false);

define(‘DT_ROOT’, str_replace(“\”, ‘/’, dirname(__FILE__)));

if(defined(‘DT_REWRITE’)) include DT_ROOT.’/include/rewrite.inc.php’;//是否定义了url伪静态？

$CFG = array();//网站整体配置信息

require DT_ROOT.’/config.inc.php’;//—————–网站配置文件

define(‘DT_PATH’, $CFG[‘url’]);

define(‘DT_DOMAIN’, $CFG[‘cookie_domain’] ? substr($CFG[‘cookie_domain’], 1) : ”);

define(‘DT_WIN’, strpos(strtoupper(PHP_OS), ‘WIN’) !== false ? true: false);

define(‘DT_CHMOD’, ($CFG[‘file_mod’] && !DT_WIN) ? $CFG[‘file_mod’] : 0);

define(‘DT_URL’, $CFG[‘url’]);//Fox 3.x

define(‘DT_LANG’, $CFG[‘language’]);

define(‘DT_KEY’, $CFG[‘authkey’]);

define(‘DT_CHARSET’, $CFG[‘charset’]);

define(‘DT_CACHE’, $CFG[‘cache_dir’] ? $CFG[‘cache_dir’] : DT_ROOT.’/file/cache’);

define(‘DT_SKIN’, DT_PATH.’skin/’.$CFG[‘skin’].’/’);

define(‘SKIN_PATH’, DT_PATH.’skin/’.$CFG[‘skin’].’/’);//For 2.x

define(‘VIP’, $CFG[‘com_vip’]);

define(‘errmsg’, ‘Invalid Request’);

随后加载网站基本功能

$L = array();

include DT_ROOT.’/lang/’.DT_LANG.’/lang.inc.php’;//语言信息

require DT_ROOT.’/version.inc.php’;

require DT_ROOT.’/include/global.func.php’;//——–全局函数

require DT_ROOT.’/include/tag.func.php’;//———–标签函数

require DT_ROOT.’/api/im.func.php’;//—————-聊天工具

require DT_ROOT.’/api/extend.func.php’;//————自己写的扩展函数

if(!$MQG && $_POST) $_POST = daddslashes($_POST);

if(!$MQG && $_GET) $_GET = daddslashes($_GET);

if(function_exists(‘date_default_timezone_set’)) date_default_timezone_set($CFG[‘timezone’]);

$DT_PRE = $CFG[‘tb_pre’];

$DT_QST = $_SERVER[‘QUERY_STRING’];//—————-querystring

$DT_TIME = time() + $CFG[‘timediff’];//————–当前时间

$DT_IP = get_env(‘ip’);

$DT_URL = get_env(‘url’);

$DT_REF = get_env(‘referer’);

$DT_BOT = is_robot();

链接数据库，建立缓存。

header(“Content-Type:text/html;charset=”.DT_CHARSET);

require DT_ROOT.’/include/db_’.$CFG[‘database’].’.class.php’;//加载数据库类

require DT_ROOT.’/include/cache_’.$CFG[‘cache’].’.class.php’;//加载缓存类

if($_POST) extract($_POST, EXTR_SKIP);//解析post请求的数据

if($_GET) extract($_GET, EXTR_SKIP);//解析get请求的数据

$db_class = ‘db_’.$CFG[‘database’];

$db = new $db_class;

$db->halt = (DT_DEBUG || IN_ADMIN) ? 1 : 0;

$db->pre = $CFG[‘tb_pre’];

$db->connect($CFG[‘db_host’], $CFG[‘db_user’], $CFG[‘db_pass’], $CFG[‘db_name’], $CFG[‘db_expires’], $CFG[‘db_charset’], $CFG[‘pconnect’]);

$dc = new dcache();

$dc->pre = $CFG[‘cache_pre’];

加载模块的基本配置

$DT = $MOD = $EXT = $CSS = $DTMP = $CAT = $ARE = $AREA = array();

$CACHE = cache_read(‘module.php’);

if(!$CACHE) {

//没有缓存模块，就读取缓存模块。

require_once DT_ROOT.’/admin/global.func.php’;

require_once DT_ROOT.’/include/post.func.php’;

require_once DT_ROOT.’/include/cache.func.php’;

cache_all();

$CACHE = cache_read(‘module.php’);

}

$DT = $CACHE[‘dt’];

$MODULE = $CACHE[‘module’];

$EXT = cache_read(‘module-3.php’);

加载模块，读取模块信息，引入模块文件

if(!isset($moduleid)) {

$moduleid = 1;

$module = ‘destoon’;

} else if($moduleid == 1) {

$module = ‘destoon’;

} else {

$moduleid = intval($moduleid);

isset($MODULE[$moduleid]) or dheader(DT_PATH);

$module = $MODULE[$moduleid][‘module’];

$MOD = $moduleid == 3 ? $EXT : cache_read(‘module-‘.$moduleid.’.php’);

include DT_ROOT.’/lang/’.DT_LANG.’/’.$module.’.inc.php’;

}

$forward = isset($forward) ? urldecode($forward) : $DT_REF;//————来源页面

$action = isset($action) ? trim($action) : ”;//————-动作指令

//判断用户登录

$destoon_auth = get_cookie(‘auth’);

if($destoon_auth) {

$_dauth = explode(“t”, decrypt($destoon_auth, md5(DT_KEY.$_SERVER[‘HTTP_USER_AGENT’])));

//print_r($_dauth);SELECT userid,username,groupid,admin FROM destoon_member

$_userid = isset($_dauth[0]) ? intval($_dauth[0]) : 0;

$_username = isset($_dauth[1]) ? trim($_dauth[1]) : ”;

$_groupid = isset($_dauth[2]) ? intval($_dauth[2]) : 3;

$_admin = isset($_dauth[4]) ? intval($_dauth[4]) : 0;

if($_userid && !defined(‘DT_NONUSER’)) {

$_password = isset($_dauth[3]) ? trim($_dauth[3]) : ”;

$user = $db->get_one(“SELECt username,passport,company,truename,password,groupid,email,message,chat,sound,online,sms,credit,money,loginip,admin,aid,edittime,trade FROM {$DT_PRE}member WHERe userid=$_userid”);

if($user && $user[‘password’] == $_password) {

if($user[‘groupid’] == 2) dalert(lang(‘message->common_forbidden’));//禁止用户访问的组别

extract($user, EXTR_PREFIX_ALL, ”);

if($user[‘loginip’] != $DT_IP && ($DT[‘ip_login’] == 2 || ($DT[‘ip_login’] == 1 && IN_ADMIN))) {

//单点登录，判断ip

$_userid = 0; set_cookie(‘auth’, ”);

dalert(lang(‘message->common_login’, array($user[‘loginip’])), DT_PATH);

}

} else {

//登录失败

$_userid = 0;

if($db->linked && !isset($swfupload) && strpos($_SERVER[‘HTTP_USER_AGENT’], ‘Flash’) === false) set_cookie(‘auth’, ”);

}

unset($destoon_auth, $user, $_dauth, $_password);

}

}

if($_userid == 0) { $_groupid = 3; $_username = ”; }

if(!IN_ADMIN) {

if($_groupid == 1) include DT_ROOT.’/module/member/admin.inc.php’;

if($_userid && !defined(‘DT_NONUSER’)) {

$db->query(“REPLACe INTO {$DT_PRE}online (userid,username,ip,moduleid,online,lasttime) VALUES (‘$_userid’,’$_username’,’$DT_IP’,’$moduleid’,’$_online’,’$DT_TIME’)”);

}

else {

if(timetodate($DT_TIME, ‘i’) == 10) {

$lastime = $DT_TIME – $DT[‘online’];

$db->query(“DELETE FROM {$DT_PRE}online WHERe lasttime<$lastime”);

}

}

}

$MG = cache_read(‘group-‘.$_groupid.’.php’);//读取用户组别配置

$_areaids = ”;

$_areaid = array();

if($DT[‘city’]) {

$AREA or $AREA = cache_read(‘area.php’);

if($_aid) {

$_areaids = $AREA[$_aid][‘child’] ? $AREA[$_aid][‘arrchildid’] : $_aid;

$_areaid = explode(‘,’, $_areaids);

}

} else {

$_aid < 1 or dalert(‘系统未开启分站功能，您的分站管理帐号暂不可用’, $MODULE[2][‘linkurl’].’logout.php’);

}

$session = new dsession();

require DT_ROOT.’/admin/global.func.php’;

require DT_ROOT.’/include/post.func.php’;

require_once DT_ROOT.’/include/cache.func.php’;

isset($file) or $file = ‘index’;

$secretkey = ‘admin_’.strtolower(substr($CFG[‘authkey’], -6));

//echo $secretkey;exit;

if($DT[‘authadmin’] == ‘session’) {

$_destoon_admin = isset($_SESSION[$secretkey]) ? intval($_SESSION[$secretkey]) : 0;

} else {

$_destoon_admin = get_cookie($secretkey);

$_destoon_admin = $_destoon_admin ? intval($_destoon_admin) : 0;

}

$_founder = $CFG[‘founderid’] == $_userid ? $_userid : 0;

$_catids = $_childs = ”;

$_catid = $_child = array();

if($file != ‘login’) {

if($_groupid != 1 || $_admin < 1 || !$_destoon_admin) msg(”, ‘?file=login&forward=’.urlencode($DT_URL));

//判断用户是否已经登录？如果未登录，直接跳转到登录页面。防止用户构造url。

if(!admin_check()) {

admin_log(1);

$db->query(“DELETe FROM { $db->pre}admin WHERe userid=$_userid AND url=’?”.$DT_QST.”‘”);

msg(‘警告！您无权进行此操作 Error(00)’);

}

}

//是否记录日志

if($DT[‘admin_log’] && $action != ‘import’) admin_log();

if($DT[‘admin_online’]) admin_online();

$psize = isset($psize) ? intval($psize) : 0;

if($psize > 0 && $psize != $pagesize) {

$pagesize = $psize;

$offset = ($page-1)*$pagesize;

}

if($module == ‘destoon’) {

(include DT_ROOT.’/admin/’.$file.’.inc.php’) or msg();

} else {

echo $file.’|’.$module;

include DT_ROOT.’/module/’.$module.’/common.inc.php’;//加载模块下的common文件

(include MD_ROOT.’/admin/’.$file.’.inc.php’) or msg();//加载模块文件

}