<?php
/*
 * @copyright   Leyun internet Technology(Shanghai)Co.,Ltd
 * @license     http://www.dzzoffice.com/licenses/license.txt
 * @package     DzzOffice
 * @link        http://www.dzzoffice.com
 * @author      zyx(zyx@dzz.cc)
 */
if (!defined('IN_DZZ') || !defined('IN_ADMIN')) {
	exit('Access Denied');
}
@set_time_limit(0);
include_once DZZ_ROOT . './core/core_version.php';
include_once libfile('function/admin');
include_once libfile('function/cache');
$dzz_upgrade = new dzz_upgrade();
$step = intval($_GET['step']);
$step = $step ? $step : 1;
$operation = $_GET['operation'] ? trim($_GET['operation']) : 'check';

$steplang = array('', lang('founder_upgrade_updatelist'), lang('founder_upgrade_download'), lang('founder_upgrade_compare'), lang('founder_upgrade_upgrading'), lang('founder_upgrade_complete'), 'dbupdate' => lang('founder_upgrade_dbupdate'));
if ($operation == 'patch' || $operation == 'cross') {
	if (!$_G['setting']['bbclosed']) {
		$msg = '<p style="margin:10px 0;color:red">' . lang('upgrade_close_site') . '</p>';
		$msg .= '<p style="margin:10px 0"><input type="button" class="btn btn-primary" onclick="window.location.reload();" value="' . lang('founder_upgrade_reset') . '" /></p>';
		$msg .= "<p style=\"margin:10px 0\"><script type=\"text/javascript\">";
		$msg .= "if(history.length > (BROWSER.ie ? 0 : 1)) document.write('<a href=\"javascript:history.go(-1);\" >" . lang('message_return') . "</a>');";
		$msg .= "</script></p>";
		if (!$_GET['iframe']) {
			include template('upgrade');
			exit();
		} else {
			include template('upgrade_iframe');
			exit();
		}
	}
	$msg = '';
	$version = trim($_GET['version']);
	//$release = trim($_GET['release']);
	$locale = trim($_GET['locale']);
	$charset = trim($_GET['charset']);
	$upgradeinfo = $upgrade_step = array();

	if ($_GET['ungetfrom']) {
		if (md5($_GET['ungetfrom'] . $_G['config']['security']['authkey']) == $_GET['ungetfrommd5']) {
			$dbreturnurl = $_G['siteurl'] . ADMINSCRIPT . '?mod=system&op=upgrade&operation=' . $operation . '&version=' . $version . '&step=5';
			dheader('Location: ' . $_G['siteurl'] . 'install/update.php?step=prepare&from=' . rawurlencode($dbreturnurl) . '&frommd5=' . rawurlencode(md5($dbreturnurl . $_G['config']['security']['authkey'])));
		} else {
			showmessage('upgrade_param_error');
		}
	}

	$upgrade_step = C::t('cache') -> fetch('upgrade_step');
	$upgrade_step = dunserialize($upgrade_step['cachevalue']);
	$upgrade_step['step'] = $step;
	$upgrade_step['operation'] = $operation;
	$upgrade_step['version'] = $version;
	//$upgrade_step['release'] = $release;
	$upgrade_step['charset'] = $charset;
	$upgrade_step['locale'] = $locale;
	C::t('cache') -> insert(array('cachekey' => 'upgrade_step', 'cachevalue' => serialize($upgrade_step), 'dateline' => $_G['timestamp'], ), false, true);

	$upgrade_run = C::t('cache') -> fetch('upgrade_run');
	if (!$upgrade_run) {
		C::t('cache') -> insert(array('cachekey' => 'upgrade_run', 'cachevalue' => serialize($_G['setting']['upgrade']), 'dateline' => $_G['timestamp'], ), false, true);
		$upgrade_run = $_G['setting']['upgrade'];
	} else {
		$upgrade_run = dunserialize($upgrade_run['cachevalue']);
	}

	if ($step != 5) {

		foreach ($upgrade_run as $type => $list) {
			if ($type == $operation && $version == $list['latestversion']) {
				$dzz_upgrade -> locale = $locale;
				$dzz_upgrade -> charset = $charset;
				$upgradeinfo = $list;
				break;
			}
		}
		if (!$upgradeinfo) {
			$msg = '<p style="margin:10px 0;color:red">' . lang('upgrade_none', array('upgradeurl' => upgradeinformation(-1))) . '</p>';
			$msg .= "<p style=\"margin:10px 0\"><script type=\"text/javascript\">";
			$msg .= "if(history.length > (BROWSER.ie ? 0 : 1)) document.write('<a href=\"javascript:history.go(-1);\" >" . lang('message_return') . "</a>');";
			$msg .= "</script></p>";
			if (!$_GET['iframe']) {
				include template('upgrade');
				exit();
			} else {
				include template('upgrade_iframe');
				exit();
			}
		}

		$updatefilelist = $dzz_upgrade -> fetch_updatefile_list($upgradeinfo);
		$updatemd5filelist = $updatefilelist['md5'];
		$updatefilelist = $updatefilelist['file'];
		$theurl = ADMINSCRIPT . '?mod=system&op=upgrade&operation=' . $operation . '&version=' . $version . '&locale=' . $locale . '&charset=' . $charset;

		if (empty($updatefilelist)) {
			$msg = '<p style="margin:10px 0;color:red">' . lang('upgrade_download_upgradelist_error', array('upgradeurl' => upgradeinformation(-2))) . '</p>';
			$msg .= '<script type="text/JavaScript">setTimeout("location.href=\'' . ($thurl) . '\';", 1000);</script>';
			$msg .= ' <p style="margin:10px 0"><a href="' . $thurl . '">' . lang('message_redirect') . '</p>';
			if (!$_GET['iframe']) {
				include template('upgrade');
				exit();
			} else {
				include template('upgrade_iframe');
				exit();
			}
		}

	}

	if ($step == 1) {
		$linkurl = $theurl . '&step=2';
		include template('upgrade');
		exit();
	} elseif ($step == 2) {
		$fileseq = intval($_GET['fileseq']);
		$fileseq = $fileseq ? $fileseq : 1;
		if ($fileseq > count($updatefilelist)) {
			if ($upgradeinfo['isupdatedb']) {
				$dzz_upgrade -> download_file($upgradeinfo, 'install/data/install.sql');
				$dzz_upgrade -> download_file($upgradeinfo, 'install/data/install_data.sql');
				$dzz_upgrade -> download_file($upgradeinfo, 'update.php', 'update');
			}
			$linkurl = $theurl . '&step=3';
			$downloadstatus = 3;
			$msg = lang('upgrade_download_complete_to_compare', array('upgradeurl' => upgradeinformation(0)));
			if (!$_GET['iframe']) {
				$msg .= '<script type="text/JavaScript">setTimeout("location.href=\'' . $linkurl . '\';", 1000);</script>';
				$msg .= ' <p><a href="' . $linkurl . '">' . lang('message_redirect') . '</a></p>';
			} else {
				$msg .= '<script type="text/JavaScript">setTimeout("parent.location.href=\'' . $linkurl . '\';", 1000);</script>';
				$msg .= ' <p><a href="javascript:;" onclick="parent.location.href=\'' . $linkurl . '\';return false;">' . lang('message_redirect') . '</a></p>';
				include template('upgrade_iframe');
				exit();
			}
		} else {
			if (!$_GET['iframe']) {
				$linkurl = $theurl . '&step=2&fileseq=' . $fileseq . '&iframe=1';
				$msg = '<iframe id="downiframe" marginheight="0" marginwidth="0" allowtransparency="true" frameborder="0"  src="' . $linkurl . '" style="width:100%;height:100%;"></iframe>';
			} else {
				$downloadstatus = $dzz_upgrade -> download_file($upgradeinfo, $updatefilelist[$fileseq - 1], 'upload', $updatemd5filelist[$fileseq - 1]);
				if ($downloadstatus == 1) {
					$linkurl = $theurl . '&step=2&fileseq=' . $fileseq . '&iframe=1';
					$msg = lang('upgrade_downloading_file', array('file' => $updatefilelist[$fileseq - 1], 'percent' => sprintf("%2d", 100 * $fileseq / count($updatefilelist)) . '%', 'upgradeurl' => upgradeinformation(1))) . '<script type="text/JavaScript">setTimeout("location.href=\'' . $linkurl . '\';", 50);</script>';
					$msg .= ' <p><a href="' . $linkurl . '">' . lang('message_redirect') . '</a></p>';

				} elseif ($downloadstatus == 2) {
					$linkurl = $theurl . '&step=2&fileseq=' . ($fileseq + 1) . '&iframe=1';
					$msg = '<p style="margin:10px 0">' . lang('upgrade_downloading_file', array('file' => $updatefilelist[$fileseq - 1], 'percent' => sprintf("%2d", 100 * $fileseq / count($updatefilelist)) . '%', 'upgradeurl' => upgradeinformation(1))) . '<script type="text/JavaScript">setTimeout("location.href=\'' . $linkurl . '\';", 50);</script></p>';
					$msg .= ' <p><a href="' . $linkurl . '">' . lang('message_redirect') . '</a></p>';
				} else {
					$linkurl = $theurl . '&step=2&fileseq=' . ($fileseq) . '&iframe=1';
					$msg = '<p style="margin:10px 0">' . lang('upgrade_redownload', array('file' => $updatefilelist[$fileseq - 1], 'upgradeurl' => upgradeinformation(-3))) . '</p>';
					$msg .= '<p style="margin:10px 0;"><input type="button" class="btn btn-success"  value="'.lang('founder_upgrade_reset').'" onclick="location.href=\'' . $linkurl . '\'" />';
				}
				include template('upgrade_iframe');
				exit();
			}
		}
	} elseif ($step == 3) {
		list($modifylist, $showlist, $ignorelist) = $dzz_upgrade -> compare_basefile($upgradeinfo, $updatefilelist);
		if (empty($modifylist) && empty($showlist) && empty($ignorelist)) {
			$msg = lang('filecheck_nofound_md5file', array('upgradeurl' => upgradeinformation(-4)));
		}

		$linkurl = $theurl . '&step=4';

	} elseif ($step == 4) {

		$confirm = $_GET['confirm'];
		if (!$confirm) {
			if ($_GET['siteftpsetting']) {
				$action = $theurl . '&step=4&confirm=ftp' . ($_GET['startupgrade'] ? '&startupgrade=1' : '');

				include template('upgrade');
				exit();
			}

			if ($upgradeinfo['isupdatedb']) {
				$checkupdatefilelist = array('install/update.php', 'install/data/install.sql', 'install/data/install_data.sql');
				$checkupdatefilelist = array_merge($checkupdatefilelist, $updatefilelist);
			} else {
				$checkupdatefilelist = $updatefilelist;
			}
			if ($dzz_upgrade -> check_folder_perm($checkupdatefilelist)) {
				$confirm = 'file';
			} else {
				$linkurl = $theurl . '&step=4';
				$ftplinkurl = $linkurl . '&siteftpsetting=1';
				$msg = '<p style="margin:10px 0">' . lang('upgrade_cannot_access_file') . '</p>';
				$msg .= '<p style="margin:10px 0"><input type="button" class="btn btn-primary" onclick="window.location.href=\'' . $ftplinkurl . '\'" value="' . lang('founder_upgrade_set_ftp') . '" />';
				$msg .= ' &nbsp; <input type="button" class="btn btn-default" onclick="window.location.href=\'' . $linkurl . '\'" value="' . lang('founder_upgrade_reset') . '" /></p>';
				$msg .= "<script type=\"text/javascript\">";
				$msg .= "if(history.length > (BROWSER.ie ? 0 : 1)) document.write('<a href=\"javascript:history.go(-1);\" class=\"lightlink\">" . lang('message_return') . "</a>');";
				$msg .= "</script>";
				include template('upgrade');
				exit();
			}
		}

		$paraftp = '';
		if ($_GET['siteftp']) {
			foreach ($_GET['siteftp'] as $k => $v) {
				$paraftp .= '&siteftp[' . $k . ']=' . $v;
			}
		}
		if (!$_GET['startupgrade']) {
			if (!$_GET['backfile']) {
				$linkurl = $theurl . '&step=4&backfile=1&confirm=' . $confirm . $paraftp;
				$msg = '<p style="margin:10px 0">' . lang('upgrade_backuping', array('upgradeurl' => upgradeinformation(2))) . '</p>';
				$msg .= '<script type="text/JavaScript">setTimeout("location.href=\'' . ($linkurl) . '\';", 1000);</script>';
				$msg .= ' <p style="margin:10px 0"><a href="' . $linkurl . '">' . lang('message_redirect') . '</p>';
				include template('upgrade');
				exit();
			}
			foreach ($updatefilelist as $updatefile) {
				$destfile = DZZ_ROOT . $updatefile;
				$backfile = DZZ_ROOT . './data/back/dzzoffice' . CORE_VERSION . '/' . $updatefile;
				if (is_file($destfile)) {
					if (!$dzz_upgrade -> copy_file($destfile, $backfile, 'file')) {
						$msg = '<p style="margin:10px 0">' . lang('upgrade_backup_error', array('upgradeurl' => upgradeinformation(-5))) . '</p>';
						$msg .= "<p style=\"margin:10px 0\"><script type=\"text/javascript\">";
						$msg .= "if(history.length > (BROWSER.ie ? 0 : 1)) document.write('<a href=\"javascript:history.go(-1);\" >" . lang('message_return') . "</a>');";
						$msg .= "</script></p>";
						include template('upgrade');
						exit();
					}
				}
			}
			$msg = '<p style="margin:10px 0">' . lang('upgrade_backup_complete', array('upgradeurl' => upgradeinformation(3))) . '</p>';
			$msg .= '<script type="text/JavaScript">setTimeout("location.href=\'' . ($theurl . '&step=4&startupgrade=1&confirm=' . $confirm . $paraftp) . '\';", 1000);</script>';
			$msg .= ' <p><a href="' . ($theurl . '&step=4&startupgrade=1&confirm=' . $confirm . $paraftp) . '">' . lang('message_redirect') . '</p>';
			include template('upgrade');
			exit();
		}

		$linkurl = $theurl . '&step=4&startupgrade=1&confirm=' . $confirm . $paraftp;
		$ftplinkurl = $theurl . '&step=4&startupgrade=1&siteftpsetting=1';
		foreach ($updatefilelist as $updatefile) {
			$srcfile = DZZ_ROOT . './data/update/dzzoffice' . $version . '/' . $updatefile;
			if ($confirm == 'ftp') {
				$destfile = $updatefile;
			} else {
				$destfile = DZZ_ROOT . $updatefile;
			}
			if (!$dzz_upgrade -> copy_file($srcfile, $destfile, $confirm)) {
				if ($confirm == 'ftp') {
					$msg = '<p style="margin:10px 0">' . lang('upgrade_ftp_upload_error', array('file' => $updatefile, 'upgradeurl' => upgradeinformation(-6))) . '</p>';
					$msg .= '<p style="margin:10px 0"><input type="button" class="btn btn-primary" onclick="window.location.href=\'' . $linkurl . '\'" value="' . lang('founder_upgrade_reupload') . '" />';
					$msg .= '&nbsp;<input type="button" class="btn btn-default" onclick="window.location.href=\'' . $ftplinkurl . '\'" value="' . lang('founder_upgrade_reset_ftp') . '" /></p>';
					$msg .= "<p style=\"margin:10px 0\"><script type=\"text/javascript\">";
					$msg .= "if(history.length > (BROWSER.ie ? 0 : 1)) document.write('<a href=\"javascript:history.go(-1);\" class=\"lightlink\">" . lang('message_return') . "</a>');";
					$msg .= "</script></p>";
					include template('upgrade');
					exit();

				} else {
					$msg = '<p style="margin:10px 0">' . lang('upgrade_copy_error', array('file' => $updatefile, 'upgradeurl' => upgradeinformation(-7))) . '</p>';
					$msg .= '<p style="margin:10px 0"><input type="button" class="btn btn-primary" onclick="window.location.href=\'' . $linkurl . '\'" value="' . lang('founder_upgrade_recopy') . '" />';
					$msg .= '&nbsp;<input type="button" class="btn btn-default" onclick="window.location.href=\'' . $ftplinkurl . '\'" value="' . lang('founder_upgrade_set_ftp') . '" /></p>';
					$msg .= "<p style=\"margin:10px 0\"><script type=\"text/javascript\">";
					$msg .= "if(history.length > (BROWSER.ie ? 0 : 1)) document.write('<a href=\"javascript:history.go(-1);\" class=\"lightlink\">" . lang('message_return') . "</a>');";
					$msg .= "</script></p>";
					include template('upgrade');
					exit();

				}
			}
		}
		if ($upgradeinfo['isupdatedb']) {
			$dbupdatefilearr = array('update.php', 'install/data/install.sql', 'install/data/install_data.sql');
			foreach ($dbupdatefilearr as $dbupdatefile) {
				$srcfile = DZZ_ROOT . './data/update/dzzoffice' . $version . '/' . $dbupdatefile;
				$dbupdatefile = $dbupdatefile == 'update.php' ? 'install/update.php' : $dbupdatefile;
				if ($confirm == 'ftp') {
					$destfile = $dbupdatefile;
				} else {
					$destfile = DZZ_ROOT . $dbupdatefile;
				}
				if (!$dzz_upgrade -> copy_file($srcfile, $destfile, $confirm)) {
					if ($confirm == 'ftp') {
						$msg = '<p style="margin:10px 0">' . lang('upgrade_ftp_upload_error', array('file' => $updatefile, 'upgradeurl' => upgradeinformation(-6))) . '</p>';
						$msg .= '<p style="margin:10px 0"><input type="button" class="btn btn-primary" onclick="window.location.href=\'' . $linkurl . '\'" value="' . lang('founder_upgrade_reupload') . '" />';
						$msg .= '&nbsp;<input type="button" class="btn btn-default" onclick="window.location.href=\'' . $ftplinkurl . '\'" value="' . lang('founder_upgrade_reset_ftp') . '" /></p>';
						$msg .= "<p style=\"margin:10px 0\"><script type=\"text/javascript\">";
						$msg .= "if(history.length > (BROWSER.ie ? 0 : 1)) document.write('<a href=\"javascript:history.go(-1);\" class=\"lightlink\">" . lang('message_return') . "</a>');";
						$msg .= "</script></p>";
						include template('upgrade');
						exit();

					} else {
						$msg = '<p style="margin:10px 0">' . lang('upgrade_copy_error', array('file' => $updatefile, 'upgradeurl' => upgradeinformation(-7))) . '</p>';
						$msg .= '<p style="margin:10px 0"><input type="button" class="btn btn-primary" onclick="window.location.href=\'' . $linkurl . '\'" value="' . lang('founder_upgrade_recopy') . '" />';
						$msg .= '&nbsp;<input type="button" class="btn btn-default" onclick="window.location.href=\'' . $ftplinkurl . '\'" value="' . lang('founder_upgrade_set_ftp') . '" /></p>';
						$msg .= "<p style=\"margin:10px 0\"><script type=\"text/javascript\">";
						$msg .= "if(history.length > (BROWSER.ie ? 0 : 1)) document.write('<a href=\"javascript:history.go(-1);\" class=\"lightlink\">" . lang('message_return') . "</a>');";
						$msg .= "</script></p>";
						include template('upgrade');
						exit();

					}
				}
			}
			$upgrade_step['step'] = 'dbupdate';
			C::t('cache') -> insert(array('cachekey' => 'upgrade_step', 'cachevalue' => serialize($upgrade_step), 'dateline' => $_G['timestamp'], ), false, true);
			$dbreturnurl = $_G['siteurl'] . ADMINSCRIPT . '?mod=system&op=upgrade&operation=' . $operation . '&version=' . $version . '&step=5';
			$linkurl = $_G['siteurl'] . 'install/update.php?step=prepare&from=' . rawurlencode($dbreturnurl) . '&frommd5=' . rawurlencode(md5($dbreturnurl . $_G['config']['security']['authkey']));
			$msg = '<p style="margin:10px 0">' . lang('upgrade_file_successful', array('upgradeurl' => upgradeinformation(4))) . '</p>';
			$msg .= '<script type="text/JavaScript">setTimeout(function(){createIframe(\'' . $linkurl . '\');}, 1000);</script>';
			$msg .= ' <p><a href="javascript:;" onclick="createIframe(\'' . $linkurl . '\');return false">' . lang('message_redirect') . '</p>';
			include template('upgrade');
			exit();

		}
		dheader('Location: ' . ADMINSCRIPT . '?mod=system&op=upgrade&operation=' . $operation . '&version=' . $version . '&step=5');

	} elseif ($step == 5) {
		$file = DZZ_ROOT . './data/update/dzzoffice' . $version . '/updatelist.tmp';
		@unlink($file);
		@unlink(DZZ_ROOT . './install/update.php');
		C::t('cache') -> delete('upgrade_step');
		C::t('cache') -> delete('upgrade_run');
		C::t('setting') -> update('upgrade', '');
		updatecache('setting');
		$old_update_dir = './data/update/';
		$new_update_dir = './data/update' . md5('update' . $_G['config']['security']['authkey']) . '/';
		$old_back_dir = './data/back/';
		$new_back_dir = './data/back' . md5('back' . $_G['config']['security']['authkey']) . '/';
		$dzz_upgrade -> copy_dir(DZZ_ROOT . $old_update_dir, DZZ_ROOT . $new_update_dir);
		$dzz_upgrade -> copy_dir(DZZ_ROOT . $old_back_dir, DZZ_ROOT . $new_back_dir);
		$dzz_upgrade -> rmdirs(DZZ_ROOT . $old_update_dir);
		$dzz_upgrade -> rmdirs(DZZ_ROOT . $old_back_dir);

		$msg = lang('upgrade_successful', array('version' => $version, 'save_update_dir' => $new_update_dir, 'save_back_dir' => $new_back_dir, 'upgradeurl' => upgradeinformation(0)));

	}

} elseif ($operation == 'check') {
	$msg = '';
	if (!intval($_GET['rechecking'])) {
		$upgrade_step = C::t('cache') -> fetch('upgrade_step');
		if (!empty($upgrade_step['cachevalue'])) {
			$upgrade_step['cachevalue'] = dunserialize($upgrade_step['cachevalue']);
			if (!empty($upgrade_step['cachevalue']['step'])) {
				$theurl = ADMINSCRIPT . '?mod=system&op=upgrade&operation=' . $upgrade_step['cachevalue']['operation'] . '&version=' . $upgrade_step['cachevalue']['version'] . '&locale=' . $upgrade_step['cachevalue']['locale'] . '&charset=' . $upgrade_step['cachevalue']['charset'];

				$recheckurl = ADMINSCRIPT . '?mod=system&op=upgrade&operation=recheck';
				if ($upgrade_step['cachevalue']['step'] == 'dbupdate') {
					$dbreturnurl = $_G['siteurl'] . $theurl . '&step=5';
					$stepurl = $_G['siteurl'] . 'install/update.php?step=prepare&from=' . rawurlencode($dbreturnurl) . '&frommd5=' . rawurlencode(md5($dbreturnurl . $_G['config']['security']['authkey']));
					$msg = '<p style="margin:10px 0;">' . lang('upgrade_continue_db', array('steplang' => $steplang['dbupdate'], 'stepurl' => $stepurl, 'recheckurl' => $recheckurl)) . '</p>';

				} else {
					$stepurl = $theurl . '&step=' . $upgrade_step['cachevalue']['step'];
					$msg = '<p style="margin:10px 0;">' . lang('upgrade_continue', array('steplang' => $steplang[$upgrade_step['cachevalue']['step']], 'stepurl' => $stepurl, 'recheckurl' => $recheckurl)) . '</p>';

				}
			}
		}
	} else {
		C::t('cache') -> delete('upgrade_step');
	}

	if (!intval($_GET['checking']) || $msg) {
	} else {
		$dzz_upgrade -> check_upgrade();
		dheader('Location: ' . ADMINSCRIPT . '?mod=system&op=upgrade&operation=showupgrade');
	}

} elseif ($operation == 'showupgrade') {

	if ($_G['setting']['upgrade']) {

		C::t('cache') -> insert(array('cachekey' => 'upgrade_step', 'cachevalue' => serialize(array('curversion' => $dzz_upgrade -> versionpath())), 'dateline' => $_G['timestamp'], ), false, true);

		$upgraderow = $patchrow = array();
		$charset = str_replace('-', '', strtoupper($_G['config']['output']['charset']));
		$dbversion = helper_dbtool::dbversion();
		$locale = '';
		if ($charset == 'BIG5') {
			$locale = 'TC';
		} elseif ($charset == 'GBK') {
			$locale = 'SC';
		} elseif ($charset == 'UTF8') {
			if ($_G['config']['output']['language'] == 'zh-cn' || $_G['config']['output']['language'] == 'zh_cn') {
				$locale = 'SC';
			} elseif ($_G['config']['output']['language'] == 'zh-tw' || $_G['config']['output']['language'] == 'zh_tw') {
				$locale = 'TC';
			}else{
				$locale = 'SC';
			}
		}
		if (!is_array($_G['setting']['upgrade']))
			$_G['setting']['upgrade'] = unserialize($_G['setting']['upgrade']);
		$list = array();
		foreach ($_G['setting']['upgrade'] as $type => $upgrade) {
			$unupgrade = 0;
			if (version_compare($upgrade['phpversion'], PHP_VERSION) > 0 || version_compare($upgrade['mysqlversion'], $dbversion) > 0) {
				$unupgrade = 1;
			}
			$list[$type]['linkurl'] = $linkurl = ADMINSCRIPT . '?mod=system&op=upgrade&operation=' . $type . '&version=' . $upgrade['latestversion'] . '&locale=' . $locale . '&charset=' . $charset;
			if ($unupgrade) {
				$list[$type]['title'] = 'DzzOffice' . $upgrade['latestversion'] . '_' . $locale . '_' . $charset;
				$list[$type]['btn1'] = lang('founder_upgrade_require_config') . ' php v' . PHP_VERSION . 'MYSQL v' . $dbversion;
			} else {
				$list[$type]['title'] = 'DzzOffice' . $upgrade['latestversion'] . '_' . $locale . '_' . $charset;
				$list[$type]['btn1'] = '<input type="button" class="btn btn-success" onclick="confirm(\'' . lang('founder_upgrade_backup_remind') . '\') ? window.location.href=\'' . $linkurl . '\' : \'\';" value="' . lang('founder_upgrade_automatically') . '">';
				$list[$type]['official'] = '<a class="btn btn-link" href="' . $upgrade['official'] . '" target="_blank">' . lang('founder_upgrade_manually') . '</a>';
			}
		}
	} else {
		$msg = lang('upgrade_latest_version');
	}

} elseif ($operation == 'recheck') {
	$upgrade_step = C::t('cache') -> fetch('upgrade_step');
	$upgrade_step = dunserialize($upgrade_step['cachevalue']);
	$file = DZZ_ROOT . './data/update/DzzOffice' . $upgrade_step['version'] . '/updatelist.tmp';
	@unlink($file);
	@unlink(DZZ_ROOT . './install/update.php');
	C::t('cache') -> delete('upgrade_step');
	C::t('cache') -> delete('upgrade_run');
	C::t('setting') -> update('upgrade', '');
	updatecache('setting');
	$old_update_dir = './data/update/';
	$dzz_upgrade -> rmdirs(DZZ_ROOT . $old_update_dir);
	dheader('Location: ' . ADMINSCRIPT . '?mod=system&op=upgrade');
}
include template('upgrade');
?>