global.php

自己写的一个网络日志(BLOG)系统

<?php
/**
 * Copyright (c) 2003-07  PHPWind.net. All rights reserved.
 * 
 * @filename: global.php
 * @author: Noizy ([e-mail]), QQ:7703883
 * @modify: Mon Mar 12 09:31:17 CST 2007
 */
!defined('R_P') && exit('Forbidden');
unset($_ENV,$HTTP_ENV_VARS,$_REQUEST,$HTTP_POST_VARS,$HTTP_GET_VARS,$HTTP_POST_FILES,$HTTP_COOKIE_VARS);

if (!get_magic_quotes_gpc()) {
	!empty($_POST)	 && Add_S($_POST);
	!empty($_GET)	 && Add_S($_GET);
	!empty($_COOKIE) && Add_S($_COOKIE);
}
!empty($_FILES) && Add_S($_FILES);

function_exists('date_default_timezone_set') && date_default_timezone_set('Etc/GMT+0');
if ($_SERVER['REMOTE_ADDR']) {
	$onlineip = $_SERVER['REMOTE_ADDR'];
} elseif ($_SERVER['HTTP_X_FORWARDED_FOR']) {
	$onlineip = $_SERVER['HTTP_X_FORWARDED_FOR'];
} else {
	$onlineip = $_SERVER['HTTP_CLIENT_IP'];
}
$onlineip = preg_match('/^([0-9]{1,3}\.){3}[0-9]{1,3}$/',$onlineip) ? $onlineip : 'Unknown';
$REQUEST_URI  = $user_file.($_SERVER['QUERY_STRING'] ? '?'.$_SERVER['QUERY_STRING'] : '');
$blog_version = '5.3';

require_once(R_P.'admin/defend.php');
if (!in_array($action,array('blogdata','comment','itemcp','post','userinfo'))) {
	//'blogdata','comment','itemcp','post','userinfo','global','top'
	foreach ($_POST as $_key => $_value) {
		!ereg('^\_',$_key) && strlen(${$_key})<1 && ${$_key} = $_POST[$_key];
	}
	foreach ($_GET as $_key => $_value) {
		!ereg('^\_',$_key) && strlen(${$_key})<1 && ${$_key} = $_GET[$_key];
	}
}
$db_debug && error_reporting(E_ALL ^ E_NOTICE);
$ob_check = !$action ? 1 : 0;
ObStart();

require_once GetLang('left');
include_once(D_P.'data/cache/level_cache.php');
include_once(D_P.'data/sql_config.php');
include_once(D_P.'data/cache/dbreg.php');
$db_cvtime!=0 && $timestamp += $db_cvtime*60;
!$db_perpage  && $db_perpage = 30;
$db_sqlpre  = $PW;
$db_sqlname = $dbname;
$B_url  	= $db_blogurl;
$imgdir		= R_P.$picpath;
$attachdir	= R_P.$attachpath;
$imgpath	= $db_http != 'N' ? $db_http : $picpath;
$attpath	= $attachpath;
$_alllevel	= $_gdefault+$_gsystem+$_gmember+$_gspecial;
$temp  = (strpos($_SERVER['PHP_SELF'],$db_dir)!==false) ? substr($_SERVER['PHP_SELF'],0,strpos($_SERVER['PHP_SELF'],$db_dir)) : $_SERVER['PHP_SELF'];
$db_blogurl = 'http://'.$_SERVER['HTTP_HOST'].substr($temp,0,strrpos($temp,'/'));

if (file_exists(D_P."data/style/$db_defaultstyle.php") && strpos($db_defaultstyle,'..')===false) {
	@include Pcv(D_P."data/style/$db_defaultstyle.php");
} else {
	@include D_P.'data/style/wind.php';
}
if ($db_blogifopen==0 && !GetCookie('AdminUser')) {
	$groupid = '2';
	usermsg($db_whyblogclose);
}
if (GetCookie('lastvisit')) {
	list($c_oltime,$lastvisit,$lastpath) = explode("\t",GetCookie('lastvisit'));
	$onblogtime = $timestamp-$lastvisit;
	$onblogtime<$db_onlinetime && $c_oltime += $onblogtime+0;
} else {
	$c_oltime = $onblogtime = 0;
}
if ($db_refreshtime!=0 && $REQUEST_URI==$lastpath && $onblogtime<$db_refreshtime) {
	!GetCookie('bloguser') && $groupid = '2';
	$manager = true;
	usermsg("refresh_limit");
}
Ipban();

$t		= array('hours'=>gmdate('G',$timestamp+$db_timedf*3600));
$tdtime	= (floor($timestamp/3600)-$t['hours'])*3600;

require_once(Pcv(R_P."mod/db_$database.php"));
$db = new DB($dbhost,$dbuser,$dbpw,$dbname,$pconnect);
unset($dbhost,$dbuser,$dbpw,$dbname,$pconnect,$manager_pwd);
list($admin_uid,$admin_pwd) = explode("\t",StrCode(GetCookie('bloguser'),'DECODE'));
if (is_numeric($admin_uid) && strlen($admin_pwd)>16) {
	$admindb = User_info($admin_uid,$admin_pwd);
	$admin_uid = $admindb['uid'];
	$admin_name = $admindb['username'];
	$admin_bbsuid = $admindb['bbsuid'];
	$admin_bbsname = $admindb['bbsid'];
	$admin_icon = showfacedesign($admindb['icon']);
	$groupid = $admindb['groupid']=='-1' ? $admindb['memberid'] : $admindb['groupid'];
	$_datefm = $admindb['datefm'];
	$_timedf = $admindb['timedf'];
	unset($admin_pwd);
} else {
	$groupid = '2';
	$admin_icon = $imgpath.'/upload/none.gif';
	$admin_uid = $admin_pwd = $admin_name = $_datefm = $_timedf = '';
	unset($admindb,$admin_uid,$admin_pwd,$admin_name,$_datefm,$_timedf);
}
list(,,$logingd) = explode("\t",$db_gdcheck);
if ($logingd) {
	$rawwindid = (!$admin_name) ? 'guest' : rawurlencode($admin_name);
} else {
	$rawwindid = '';
}
(int)$groupid<1 && $groupid = '2';
if (file_exists(D_P."data/groupdb/group_$groupid.php")) {
	require_once(Pcv(D_P."data/groupdb/group_$groupid.php"));
} else {
	require_once(D_P.'data/groupdb/group_1.php');
}
$editor = ($_GROUP['wysiwyg'] && $admindb['editor']) ? 'wysiwyg' : 'windcode';
#passport
if ($db_pptifopen && $db_ppttype == 'client') {
	$pptforward  = rawurlencode($db_blogurl);
	$loginurl	 = "$db_pptserverurl/$db_pptloginurl?forward=$pptforward";
	$loginouturl = "$db_pptserverurl/$db_pptloginouturl&forward=$pptforward";
	$regurl 	 = "$db_pptserverurl/$db_pptregurl?forward=$pptforward";
	$ckurl		 = "ck.php";
} else {
	$loginurl	 = 'login.php';
	$loginouturl = 'login.php?action=quit';
	$regurl 	 = 'register.php';
	$ckurl		 = 'ck.php';
}
list($db_metatitle,$db_metakeyword,$db_metadescrip) = explode('@:wind:@',$db_metadata);
$logindb = $lg_logindb ? array_flip(explode("\t",$lg_logindb)) : array();
foreach ($logindb as $key => $value) {
	$value = $ulang['lg'.$key];
	$logindb[$key] = $value;
}
if (!$admin_uid) {
	include PrintEot('login');footer('N');
}
if ($_SERVER['REQUEST_METHOD']=='POST') {
	$referer_a = @parse_url($_SERVER['HTTP_REFERER']);
	$s_host = $_SERVER['HTTP_HOST'];
	strpos($s_host,':') && $s_host = substr($s_host,0,strpos($s_host,':'));
	($referer_a['host'] && $referer_a['host']!=$s_host) && usermsg('undefined_action');
	if (!defined('AJAXUSER')) {
		$verify = GetGP('verify','G');
		PostCheck($verify);
	}
}
Cookie('lastvisit',$c_oltime."\t".$timestamp."\t".$REQUEST_URI);

function P_unlink($filename){
	strpos($filename,'..')!==false && exit('Forbidden');
	@unlink($filename);
}
function substrs($content,$length = null,$add=' ..'){
	global $db_charset;
	if (empty($length)) return $content;
	if (strlen($content) > $length) {
		if ($db_charset!='utf8') {
			$retstr = '';
			for ($i = 0; $i < $length - 2; $i++) {
				$retstr .= ord($content[$i]) > 127 ? $content[$i].$content[++$i] : $content[$i];
			}
			return $retstr.$add;
		} else {
			return utf8_trim(substr($content,0,$length)).$add;
		}
	} else {
		return $content;
	}
}
function utf8_trim($str){
	$hex = '';
	for ($i=strlen($str)-1;$i>=0;$i-=1) {
		$hex .= ' '.ord($str[$i]);
		$ch   = ord($str[$i]);
		if (($ch & 128)==0 || ($ch & 192)==192) {
			return substr($str,0,$i);
		}
	}
	return($str.$hex);
}
function get_date($timestamp,$timeformat=''){
	global $db_datefm,$db_timedf,$_datefm,$_timedf;
	$date_show=$timeformat ? $timeformat : ($_datefm ? $_datefm : $db_datefm);
	if($_timedf){
		$offset = $_timedf=='111' ? 0 : $_timedf;
	}else{
		$offset = $db_timedf=='111' ? 0 : $db_timedf;
	}
	return gmdate($date_show,$timestamp+$offset*3600);
}
function writeover($filename,$data,$method="rb+",$iflock=1,$check=1,$chmod=1){
	$check && strpos($filename,'..')!==false && exit('Forbidden');
	touch($filename);
	$handle = fopen($filename,$method);
	$iflock && flock($handle,LOCK_EX);
	fwrite($handle,$data);
	$method=="rb+" && ftruncate($handle,strlen($data));
	fclose($handle);
	$chmod && @chmod($filename,0777);
}
function readover($filename,$method='rb',$readsize='D'){
	strpos($filename,'..')!==false && exit('Forbidden');
	$filesize = @filesize($filename);
	$readsize!='D' && $filesize = min($filesize,$readsize);
	$filedata = '';
	if ($handle = @fopen($filename,$method)) {
		flock($handle,LOCK_SH);
		$filedata = @fread($handle,$filesize);
		fclose($handle);
	}
	return $filedata;
}
function N_InArray($needle,$haystack){
	if (is_array($haystack) && in_array($needle,$haystack)) {
		return true;
	}
	return false;
}
function showfacedesign($usericon){
	global $imgpath;
	if (!$usericon) {
		return $imgpath.'/upload/none.gif';
	} elseif (preg_match('/^http/i',$usericon)) {
		return $usericon;
	} else {
		return $imgpath.'/upload/'.$usericon;
	}
}
function User_info($winduid,$windpwd){
	global $db,$timestamp,$db_onlinetime,$db_ifonlinetime,$c_oltime,$onlineip,$db_ipcheck,$action;
	$rt = $db->get_one("SELECT u.*,ui.* FROM pw_user u LEFT JOIN pw_userinfo ui USING(uid) WHERE u.uid='$winduid'");
	$loginout = 0;
	if ($db_ipcheck==1 && strpos($rt['onlineip'],$onlineip)===false) {
		$iparray  = explode('.',$onlineip);
		strpos($rt['onlineip'],$iparray[0].'.'.$iparray[1])===false && $loginout = 1;
		unset($iparray);
	}
	if (!$rt || PwdCode($rt['password']) != $windpwd || $loginout==1) {
		$rt = array(); $GLOBALS['groupid']='2';
		if (!function_exists('Loginout')) {
			require_once(R_P.'mod/checkpass_mod.php');
		}
		Loginout();
	} else {
		$rt['uid'] = $winduid;
		$action != 'userinfo' && $rt['password'] = null;
		if ($timestamp-$rt['lastvisit']>$db_onlinetime || $timestamp-$rt['lastvisit']>3600) {
			$ct = "lastvisit='$timestamp',thisvisit='$timestamp'";
			if ($db_ifonlinetime==1 && $c_oltime > 0) {
				($c_oltime>$db_onlinetime*1.2) && $c_oltime = $db_onlinetime;
				$ct .= ",onlinetime=onlinetime+'$c_oltime'";
				$c_oltime=0;
			}
			$db->update("UPDATE pw_user SET $ct WHERE uid='$winduid'");
		}
	}
	return $rt;
}
function PwdCode($pwd){
	return md5($_SERVER["HTTP_USER_AGENT"].$pwd.$GLOBALS['db_hash']);
}
function SafeCheck($CK,$PwdCode){
	global $timestamp;
	$t = $timestamp - $CK[0];
	if ($t > 1800 || $CK[2] != md5($PwdCode.$CK[0])) {
		Cookie('cknum','',0);
		return false;
	} else {
		$CK[0] = $timestamp;
		$CK[2] = md5($PwdCode.$timestamp);
		$value = implode("\t",$CK);
		$cknum  = StrCode($value);
		Cookie('cknum',StrCode($value));
		return true;
	}
}
function footer($inchtml='Y'){
	global $blog_version,$db_obstart;
	$inchtml=='Y' && include PrintEot('userbottom');
	$output = str_replace(array('<!--<!--<!---->','<!--<!---->','<!---->'),'',ob_get_contents());
	$inchtml=='Y' && $output = preg_replace(
		'/\<form([^\<\>]*)\saction=[\'|"]?([^\s"\'\<\>]+)[\'|"]?([^\<\>]*)\>/ies',