nextcloud/lib/private/updater.php

361 lines
10 KiB
PHP

<?php
/**
* @author Arthur Schiwon <blizzz@owncloud.com>
* @author Bart Visscher <bartv@thisnet.nl>
* @author Bjoern Schiessle <schiessle@owncloud.com>
* @author Frank Karlitschek <frank@owncloud.org>
* @author Lukas Reschke <lukas@owncloud.com>
* @author Robin Appelman <icewind@owncloud.com>
* @author Robin McCorkell <rmccorkell@karoshi.org.uk>
* @author Thomas Müller <thomas.mueller@tmit.eu>
* @author Victor Dubiniuk <dubiniuk@owncloud.com>
* @author Vincent Petry <pvince81@owncloud.com>
*
* @copyright Copyright (c) 2015, ownCloud, Inc.
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OC;
use OC\Hooks\BasicEmitter;
/**
* Class that handles autoupdating of ownCloud
*
* Hooks provided in scope \OC\Updater
* - maintenanceStart()
* - maintenanceEnd()
* - dbUpgrade()
* - failure(string $message)
*/
class Updater extends BasicEmitter {
/**
* @var \OC\Log $log
*/
private $log;
/**
* @var \OC\HTTPHelper $helper;
*/
private $httpHelper;
/**
* @var \OCP\IAppConfig;
*/
private $config;
private $simulateStepEnabled;
private $updateStepEnabled;
/**
* @param \OC\Log $log
*/
public function __construct($httpHelper, $config, $log = null) {
$this->httpHelper = $httpHelper;
$this->log = $log;
$this->config = $config;
$this->simulateStepEnabled = true;
$this->updateStepEnabled = true;
}
/**
* Sets whether the database migration simulation must
* be enabled.
* This can be set to false to skip this test.
*
* @param bool $flag true to enable simulation, false otherwise
*/
public function setSimulateStepEnabled($flag) {
$this->simulateStepEnabled = $flag;
}
/**
* Sets whether the update must be performed.
* This can be set to false to skip the actual update.
*
* @param bool $flag true to enable update, false otherwise
*/
public function setUpdateStepEnabled($flag) {
$this->updateStepEnabled = $flag;
}
/**
* Check if a new version is available
*
* @param string $updaterUrl the url to check, i.e. 'http://apps.owncloud.com/updater.php'
* @return array|bool
*/
public function check($updaterUrl = null) {
// Look up the cache - it is invalidated all 30 minutes
if (($this->config->getValue('core', 'lastupdatedat') + 1800) > time()) {
return json_decode($this->config->getValue('core', 'lastupdateResult'), true);
}
if (is_null($updaterUrl)) {
$updaterUrl = 'https://apps.owncloud.com/updater.php';
}
$this->config->setValue('core', 'lastupdatedat', time());
if ($this->config->getValue('core', 'installedat', '') == '') {
$this->config->setValue('core', 'installedat', microtime(true));
}
$version = \OC_Util::getVersion();
$version['installed'] = $this->config->getValue('core', 'installedat');
$version['updated'] = $this->config->getValue('core', 'lastupdatedat');
$version['updatechannel'] = \OC_Util::getChannel();
$version['edition'] = \OC_Util::getEditionString();
$version['build'] = \OC_Util::getBuild();
$versionString = implode('x', $version);
//fetch xml data from updater
$url = $updaterUrl . '?version=' . $versionString;
// set a sensible timeout of 10 sec to stay responsive even if the update server is down.
$tmp = array();
$xml = $this->httpHelper->getUrlContent($url);
if ($xml) {
$loadEntities = libxml_disable_entity_loader(true);
$data = @simplexml_load_string($xml);
libxml_disable_entity_loader($loadEntities);
if ($data !== false) {
$tmp['version'] = $data->version;
$tmp['versionstring'] = $data->versionstring;
$tmp['url'] = $data->url;
$tmp['web'] = $data->web;
}
} else {
$data = array();
}
// Cache the result
$this->config->setValue('core', 'lastupdateResult', json_encode($data));
return $tmp;
}
/**
* runs the update actions in maintenance mode, does not upgrade the source files
* except the main .htaccess file
*
* @return bool true if the operation succeeded, false otherwise
*/
public function upgrade() {
\OC_Config::setValue('maintenance', true);
$installedVersion = \OC_Config::getValue('version', '0.0.0');
$currentVersion = implode('.', \OC_Util::getVersion());
if ($this->log) {
$this->log->debug('starting upgrade from ' . $installedVersion . ' to ' . $currentVersion, array('app' => 'core'));
}
$this->emit('\OC\Updater', 'maintenanceStart');
try {
$this->doUpgrade($currentVersion, $installedVersion);
} catch (\Exception $exception) {
$this->emit('\OC\Updater', 'failure', array($exception->getMessage()));
}
\OC_Config::setValue('maintenance', false);
$this->emit('\OC\Updater', 'maintenanceEnd');
}
/**
* Whether an upgrade to a specified version is possible
* @param string $oldVersion
* @param string $newVersion
* @return bool
*/
public function isUpgradePossible($oldVersion, $newVersion) {
$oldVersion = explode('.', $oldVersion);
$newVersion = explode('.', $newVersion);
if($newVersion[0] > ($oldVersion[0] + 1) || $oldVersion[0] > $newVersion[0]) {
return false;
}
return true;
}
/**
* runs the update actions in maintenance mode, does not upgrade the source files
* except the main .htaccess file
*
* @param string $currentVersion current version to upgrade to
* @param string $installedVersion previous version from which to upgrade from
*
* @throws \Exception
* @return bool true if the operation succeeded, false otherwise
*/
private function doUpgrade($currentVersion, $installedVersion) {
// Stop update if the update is over several major versions
if (!self::isUpgradePossible($installedVersion, $currentVersion)) {
throw new \Exception('Updates between multiple major versions are unsupported.');
}
// Update htaccess files for apache hosts
if (isset($_SERVER['SERVER_SOFTWARE']) && strstr($_SERVER['SERVER_SOFTWARE'], 'Apache')) {
try {
\OC_Setup::updateHtaccess();
} catch (\Exception $e) {
throw new \Exception($e->getMessage());
}
}
// create empty file in data dir, so we can later find
// out that this is indeed an ownCloud data directory
// (in case it didn't exist before)
file_put_contents(\OC_Config::getValue('datadirectory', \OC::$SERVERROOT . '/data') . '/.ocdata', '');
// pre-upgrade repairs
$repair = new \OC\Repair(\OC\Repair::getBeforeUpgradeRepairSteps());
$repair->run();
// simulate DB upgrade
if ($this->simulateStepEnabled) {
$this->checkCoreUpgrade();
// simulate apps DB upgrade
$this->checkAppUpgrade($currentVersion);
}
if ($this->updateStepEnabled) {
$this->doCoreUpgrade();
$disabledApps = \OC_App::checkAppsRequirements();
if (!empty($disabledApps)) {
$this->emit('\OC\Updater', 'disabledApps', array($disabledApps));
}
$this->doAppUpgrade();
// post-upgrade repairs
$repair = new \OC\Repair(\OC\Repair::getRepairSteps());
$repair->run();
//Invalidate update feed
$this->config->setValue('core', 'lastupdatedat', 0);
// only set the final version if everything went well
\OC_Config::setValue('version', implode('.', \OC_Util::getVersion()));
}
}
protected function checkCoreUpgrade() {
// simulate core DB upgrade
\OC_DB::simulateUpdateDbFromStructure(\OC::$SERVERROOT . '/db_structure.xml');
$this->emit('\OC\Updater', 'dbSimulateUpgrade');
}
protected function doCoreUpgrade() {
// do the real upgrade
\OC_DB::updateDbFromStructure(\OC::$SERVERROOT . '/db_structure.xml');
$this->emit('\OC\Updater', 'dbUpgrade');
}
/**
* @param string $version the oc version to check app compatibility with
*/
protected function checkAppUpgrade($version) {
$apps = \OC_App::getEnabledApps();
foreach ($apps as $appId) {
if ($version) {
$info = \OC_App::getAppInfo($appId);
$compatible = \OC_App::isAppCompatible($version, $info);
} else {
$compatible = true;
}
if ($compatible && \OC_App::shouldUpgrade($appId)) {
/**
* FIXME: The preupdate check is performed before the database migration, otherwise database changes
* are not possible anymore within it. - Consider this when touching the code.
* @link https://github.com/owncloud/core/issues/10980
* @see \OC_App::updateApp
*/
if (file_exists(\OC_App::getAppPath($appId) . '/appinfo/preupdate.php')) {
$this->includePreUpdate($appId);
}
if (file_exists(\OC_App::getAppPath($appId) . '/appinfo/database.xml')) {
\OC_DB::simulateUpdateDbFromStructure(\OC_App::getAppPath($appId) . '/appinfo/database.xml');
}
}
}
$this->emit('\OC\Updater', 'appUpgradeCheck');
}
/**
* Includes the pre-update file. Done here to prevent namespace mixups.
* @param string $appId
*/
private function includePreUpdate($appId) {
include \OC_App::getAppPath($appId) . '/appinfo/preupdate.php';
}
/**
* upgrades all apps within a major ownCloud upgrade. Also loads "priority"
* (types authentication, filesystem, logging, in that order) afterwards.
*
* @throws NeedsUpdateException
*/
protected function doAppUpgrade() {
$apps = \OC_App::getEnabledApps();
$priorityTypes = array('authentication', 'filesystem', 'logging');
$pseudoOtherType = 'other';
$stacks = array($pseudoOtherType => array());
foreach ($apps as $appId) {
$priorityType = false;
foreach ($priorityTypes as $type) {
if(!isset($stacks[$type])) {
$stacks[$type] = array();
}
if (\OC_App::isType($appId, $type)) {
$stacks[$type][] = $appId;
$priorityType = true;
break;
}
}
if (!$priorityType) {
$stacks[$pseudoOtherType][] = $appId;
}
}
foreach ($stacks as $type => $stack) {
foreach ($stack as $appId) {
if (\OC_App::shouldUpgrade($appId)) {
\OC_App::updateApp($appId);
$this->emit('\OC\Updater', 'appUpgrade', array($appId, \OC_App::getAppVersion($appId)));
}
if($type !== $pseudoOtherType) {
// load authentication, filesystem and logging apps after
// upgrading them. Other apps my need to rely on modifying
// user and/or filesystem aspects.
\OC_App::loadApp($appId, false);
}
}
}
}
}