5f8fb8d1ee
The update routine tries to test the database migration before actually performing the update. However, this will fail hard if the schema has changed (for example an unique key has been added). App developers can convert the DB in preupdate.php, however it is not called before and therefore the update fails. This actually breaks ownCloud updates from ownCloud 6 to ownCloud 7 when the files_antivirus app is enabled.
294 lines
8.2 KiB
PHP
294 lines
8.2 KiB
PHP
<?php
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/**
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* Copyright (c) 2013 Robin Appelman <icewind@owncloud.com>
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* This file is licensed under the Affero General Public License version 3 or
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* later.
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* See the COPYING-README file.
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*/
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namespace OC;
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use OC\Hooks\BasicEmitter;
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/**
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* Class that handles autoupdating of ownCloud
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*
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* Hooks provided in scope \OC\Updater
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* - maintenanceStart()
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* - maintenanceEnd()
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* - dbUpgrade()
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* - failure(string $message)
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*/
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class Updater extends BasicEmitter {
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/**
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* @var \OC\Log $log
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*/
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private $log;
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private $simulateStepEnabled;
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private $updateStepEnabled;
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/**
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* @param \OC\Log $log
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*/
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public function __construct($log = null) {
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$this->log = $log;
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$this->simulateStepEnabled = true;
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$this->updateStepEnabled = true;
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}
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/**
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* Sets whether the database migration simulation must
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* be enabled.
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* This can be set to false to skip this test.
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*
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* @param bool $flag true to enable simulation, false otherwise
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*/
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public function setSimulateStepEnabled($flag) {
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$this->simulateStepEnabled = $flag;
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}
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/**
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* Sets whether the update must be performed.
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* This can be set to false to skip the actual update.
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*
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* @param bool $flag true to enable update, false otherwise
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*/
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public function setUpdateStepEnabled($flag) {
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$this->updateStepEnabled = $flag;
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}
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/**
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* Check if a new version is available
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*
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* @param string $updaterUrl the url to check, i.e. 'http://apps.owncloud.com/updater.php'
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* @return array|bool
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*/
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public function check($updaterUrl = null) {
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// Look up the cache - it is invalidated all 30 minutes
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if ((\OC_Appconfig::getValue('core', 'lastupdatedat') + 1800) > time()) {
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return json_decode(\OC_Appconfig::getValue('core', 'lastupdateResult'), true);
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}
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if (is_null($updaterUrl)) {
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$updaterUrl = 'https://apps.owncloud.com/updater.php';
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}
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\OC_Appconfig::setValue('core', 'lastupdatedat', time());
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if (\OC_Appconfig::getValue('core', 'installedat', '') == '') {
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\OC_Appconfig::setValue('core', 'installedat', microtime(true));
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}
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$version = \OC_Util::getVersion();
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$version['installed'] = \OC_Appconfig::getValue('core', 'installedat');
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$version['updated'] = \OC_Appconfig::getValue('core', 'lastupdatedat');
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$version['updatechannel'] = \OC_Util::getChannel();
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$version['edition'] = \OC_Util::getEditionString();
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$version['build'] = \OC_Util::getBuild();
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$versionString = implode('x', $version);
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//fetch xml data from updater
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$url = $updaterUrl . '?version=' . $versionString;
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// set a sensible timeout of 10 sec to stay responsive even if the update server is down.
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$ctx = stream_context_create(
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array(
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'http' => array(
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'timeout' => 10
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)
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)
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);
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$xml = @file_get_contents($url, 0, $ctx);
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if ($xml == false) {
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return array();
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}
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$loadEntities = libxml_disable_entity_loader(true);
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$data = @simplexml_load_string($xml);
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libxml_disable_entity_loader($loadEntities);
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$tmp = array();
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$tmp['version'] = $data->version;
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$tmp['versionstring'] = $data->versionstring;
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$tmp['url'] = $data->url;
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$tmp['web'] = $data->web;
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// Cache the result
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\OC_Appconfig::setValue('core', 'lastupdateResult', json_encode($data));
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return $tmp;
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}
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/**
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* runs the update actions in maintenance mode, does not upgrade the source files
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* except the main .htaccess file
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*
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* @return bool true if the operation succeeded, false otherwise
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*/
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public function upgrade() {
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\OC_Config::setValue('maintenance', true);
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$installedVersion = \OC_Config::getValue('version', '0.0.0');
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$currentVersion = implode('.', \OC_Util::getVersion());
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if ($this->log) {
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$this->log->debug('starting upgrade from ' . $installedVersion . ' to ' . $currentVersion, array('app' => 'core'));
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}
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$this->emit('\OC\Updater', 'maintenanceStart');
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try {
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$this->doUpgrade($currentVersion, $installedVersion);
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} catch (\Exception $exception) {
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$this->emit('\OC\Updater', 'failure', array($exception->getMessage()));
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}
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\OC_Config::setValue('maintenance', false);
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$this->emit('\OC\Updater', 'maintenanceEnd');
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}
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/**
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* Whether an upgrade to a specified version is possible
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* @param string $oldVersion
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* @param string $newVersion
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* @return bool
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*/
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public function isUpgradePossible($oldVersion, $newVersion) {
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$oldVersion = explode('.', $oldVersion);
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$newVersion = explode('.', $newVersion);
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if($newVersion[0] > ($oldVersion[0] + 1) || $oldVersion[0] > $newVersion[0]) {
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return false;
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}
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return true;
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}
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/**
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* runs the update actions in maintenance mode, does not upgrade the source files
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* except the main .htaccess file
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*
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* @param string $currentVersion current version to upgrade to
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* @param string $installedVersion previous version from which to upgrade from
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*
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* @throws \Exception
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* @return bool true if the operation succeeded, false otherwise
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*/
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private function doUpgrade($currentVersion, $installedVersion) {
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// Stop update if the update is over several major versions
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if (!self::isUpgradePossible($installedVersion, $currentVersion)) {
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throw new \Exception('Updates between multiple major versions are unsupported.');
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}
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// Update htaccess files for apache hosts
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if (isset($_SERVER['SERVER_SOFTWARE']) && strstr($_SERVER['SERVER_SOFTWARE'], 'Apache')) {
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\OC_Setup::updateHtaccess();
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}
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// create empty file in data dir, so we can later find
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// out that this is indeed an ownCloud data directory
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// (in case it didn't exist before)
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file_put_contents(\OC_Config::getValue('datadirectory', \OC::$SERVERROOT . '/data') . '/.ocdata', '');
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// pre-upgrade repairs
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$repair = new \OC\Repair(\OC\Repair::getBeforeUpgradeRepairSteps());
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$repair->run();
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// simulate DB upgrade
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if ($this->simulateStepEnabled) {
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$this->checkCoreUpgrade();
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// simulate apps DB upgrade
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$this->checkAppUpgrade($currentVersion);
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}
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if ($this->updateStepEnabled) {
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$this->doCoreUpgrade();
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$disabledApps = \OC_App::checkAppsRequirements();
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if (!empty($disabledApps)) {
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$this->emit('\OC\Updater', 'disabledApps', array($disabledApps));
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}
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$this->doAppUpgrade();
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// post-upgrade repairs
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$repair = new \OC\Repair(\OC\Repair::getRepairSteps());
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$repair->run();
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//Invalidate update feed
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\OC_Appconfig::setValue('core', 'lastupdatedat', 0);
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// only set the final version if everything went well
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\OC_Config::setValue('version', implode('.', \OC_Util::getVersion()));
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}
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}
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protected function checkCoreUpgrade() {
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// simulate core DB upgrade
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\OC_DB::simulateUpdateDbFromStructure(\OC::$SERVERROOT . '/db_structure.xml');
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$this->emit('\OC\Updater', 'dbSimulateUpgrade');
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}
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protected function doCoreUpgrade() {
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// do the real upgrade
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\OC_DB::updateDbFromStructure(\OC::$SERVERROOT . '/db_structure.xml');
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$this->emit('\OC\Updater', 'dbUpgrade');
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}
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/**
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* @param string $version the oc version to check app compatibility with
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*/
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protected function checkAppUpgrade($version) {
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$apps = \OC_App::getEnabledApps();
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foreach ($apps as $appId) {
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if ($version) {
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$info = \OC_App::getAppInfo($appId);
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$compatible = \OC_App::isAppCompatible($version, $info);
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} else {
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$compatible = true;
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}
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if ($compatible && \OC_App::shouldUpgrade($appId)) {
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/**
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* FIXME: The preupdate check is performed before the database migration, otherwise database changes
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* are not possible anymore within it. - Consider this when touching the code.
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* @link https://github.com/owncloud/core/issues/10980
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* @see \OC_App::updateApp
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*/
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if (file_exists(\OC_App::getAppPath($appId) . '/appinfo/preupdate.php')) {
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$this->includePreUpdate($appId);
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}
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if (file_exists(\OC_App::getAppPath($appId) . '/appinfo/database.xml')) {
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\OC_DB::simulateUpdateDbFromStructure(\OC_App::getAppPath($appId) . '/appinfo/database.xml');
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}
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}
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}
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$this->emit('\OC\Updater', 'appUpgradeCheck');
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}
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/**
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* Includes the pre-update file. Done here to prevent namespace mixups.
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* @param string $appId
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*/
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private function includePreUpdate($appId) {
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include \OC_App::getAppPath($appId) . '/appinfo/preupdate.php';
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}
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protected function doAppUpgrade() {
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$apps = \OC_App::getEnabledApps();
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foreach ($apps as $appId) {
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if (\OC_App::shouldUpgrade($appId)) {
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\OC_App::updateApp($appId);
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$this->emit('\OC\Updater', 'appUpgrade', array($appId, \OC_App::getAppVersion($appId)));
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}
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}
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}
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}
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