275 lines
7.5 KiB
PHP
275 lines
7.5 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) {
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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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\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 $tmp;
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}
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/**
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* runs the update actions in maintenance mode, does not upgrade the source files
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* except the main .htaccess file
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*
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* @return bool true if the operation succeeded, false otherwise
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*/
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public function upgrade() {
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\OC_DB::enableCaching(false);
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\OC_Config::setValue('maintenance', true);
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$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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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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$this->emit('\OC\Updater', 'appUpgradeCheck');
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}
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protected function doAppUpgrade() {
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$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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