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- <?php
- /**
- * Copyright (c) 2013 Robin Appelman <icewind@owncloud.com>
- * This file is licensed under the Affero General Public License version 3 or
- * later.
- * See the COPYING-README file.
- */
-
- 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($_SERVER['SERVER_SOFTWARE'], 'Apache')) {
- \OC_Setup::updateHtaccess();
- }
-
- // create empty file in data dir, so we can later find
- // out that this is indeed an ownCloud data directory
- // (in case it didn't exist before)
- file_put_contents(\OC_Config::getValue('datadirectory', \OC::$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';
- }
-
- protected function doAppUpgrade() {
- $apps = \OC_App::getEnabledApps();
-
- foreach ($apps as $appId) {
- if (\OC_App::shouldUpgrade($appId)) {
- \OC_App::updateApp($appId);
- $this->emit('\OC\Updater', 'appUpgrade', array($appId, \OC_App::getAppVersion($appId)));
- }
- }
- }
- }
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