server/core/ajax/update.php

<?php
/**
 * @copyright Copyright (c) 2016, ownCloud, Inc.
 *
 * @author Björn Schießle <bjoern@schiessle.org>
 * @author Joas Schilling <coding@schilljs.com>
 * @author Ko- <k.stoffelen@cs.ru.nl>
 * @author Lukas Reschke <lukas@statuscode.ch>
 * @author Michael Gapczynski <GapczynskiM@gmail.com>
 * @author Morris Jobke <hey@morrisjobke.de>
 * @author Robin Appelman <robin@icewind.nl>
 * @author Thomas Müller <thomas.mueller@tmit.eu>
 * @author Victor Dubiniuk <dubiniuk@owncloud.com>
 * @author Vincent Petry <pvince81@owncloud.com>
 *
 * @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/>
 *
 */
use Symfony\Component\EventDispatcher\GenericEvent;

if (strpos(@ini_get('disable_functions'), 'set_time_limit') === false) {
	@set_time_limit(0);
}

require_once '../../lib/base.php';

$l = \OC::$server->getL10N('core');

$eventSource = \OC::$server->createEventSource();
// need to send an initial message to force-init the event source,
// which will then trigger its own CSRF check and produces its own CSRF error
// message
$eventSource->send('success', (string)$l->t('Preparing update'));

class FeedBackHandler {
	/** @var integer */
	private $progressStateMax = 100;
	/** @var integer */
	private $progressStateStep = 0;
	/** @var string */
	private $currentStep;
	/** @var \OCP\IEventSource */
	private $eventSource;
	/** @var \OCP\IL10N */
	private $l10n;

	public function __construct(\OCP\IEventSource $eventSource, \OCP\IL10N $l10n) {
		$this->eventSource = $eventSource;
		$this->l10n = $l10n;
	}

	public function handleRepairFeedback($event) {
		if (!$event instanceof GenericEvent) {
			return;
		}

		switch ($event->getSubject()) {
			case '\OC\Repair::startProgress':
				$this->progressStateMax = $event->getArgument(0);
				$this->progressStateStep = 0;
				$this->currentStep = $event->getArgument(1);
				break;
			case '\OC\Repair::advance':
				$this->progressStateStep += $event->getArgument(0);
				$desc = $event->getArgument(1);
				if (empty($desc)) {
					$desc = $this->currentStep;
				}
				$this->eventSource->send('success', (string)$this->l10n->t('[%d / %d]: %s', [$this->progressStateStep, $this->progressStateMax, $desc]));
				break;
			case '\OC\Repair::finishProgress':
				$this->progressStateMax = $this->progressStateStep;
				$this->eventSource->send('success', (string)$this->l10n->t('[%d / %d]: %s', [$this->progressStateStep, $this->progressStateMax, $this->currentStep]));
				break;
			case '\OC\Repair::step':
				break;
			case '\OC\Repair::info':
				break;
			case '\OC\Repair::warning':
				$this->eventSource->send('notice', (string)$this->l10n->t('Repair warning: ') . $event->getArgument(0));
				break;
			case '\OC\Repair::error':
				$this->eventSource->send('notice', (string)$this->l10n->t('Repair error: ') . $event->getArgument(0));
				break;
		}
	}
}

if (\OCP\Util::needUpgrade()) {

	$config = \OC::$server->getSystemConfig();
	if ($config->getValue('upgrade.disable-web', false)) {
		$eventSource->send('failure', (string)$l->t('Please use the command line updater because automatic updating is disabled in the config.php.'));
		$eventSource->close();
		exit();
	}

	// if a user is currently logged in, their session must be ignored to
	// avoid side effects
	\OC_User::setIncognitoMode(true);

	$logger = \OC::$server->getLogger();
	$config = \OC::$server->getConfig();
	$updater = new \OC\Updater(
			$config,
			\OC::$server->getIntegrityCodeChecker(),
			$logger,
			\OC::$server->query(\OC\Installer::class)
	);
	$incompatibleApps = [];
	$disabledThirdPartyApps = [];

	$dispatcher = \OC::$server->getEventDispatcher();
	$dispatcher->addListener('\OC\DB\Migrator::executeSql', function($event) use ($eventSource, $l) {
		if ($event instanceof GenericEvent) {
			$eventSource->send('success', (string)$l->t('[%d / %d]: %s', [$event[0], $event[1], $event->getSubject()]));
		}
	});
	$dispatcher->addListener('\OC\DB\Migrator::checkTable', function($event) use ($eventSource, $l) {
		if ($event instanceof GenericEvent) {
			$eventSource->send('success', (string)$l->t('[%d / %d]: Checking table %s', [$event[0], $event[1], $event->getSubject()]));
		}
	});
	$feedBack = new FeedBackHandler($eventSource, $l);
	$dispatcher->addListener('\OC\Repair::startProgress', [$feedBack, 'handleRepairFeedback']);
	$dispatcher->addListener('\OC\Repair::advance', [$feedBack, 'handleRepairFeedback']);
	$dispatcher->addListener('\OC\Repair::finishProgress', [$feedBack, 'handleRepairFeedback']);
	$dispatcher->addListener('\OC\Repair::step', [$feedBack, 'handleRepairFeedback']);
	$dispatcher->addListener('\OC\Repair::info', [$feedBack, 'handleRepairFeedback']);
	$dispatcher->addListener('\OC\Repair::warning', [$feedBack, 'handleRepairFeedback']);
	$dispatcher->addListener('\OC\Repair::error', [$feedBack, 'handleRepairFeedback']);

	$updater->listen('\OC\Updater', 'maintenanceEnabled', function () use ($eventSource, $l) {
		$eventSource->send('success', (string)$l->t('Turned on maintenance mode'));
	});
	$updater->listen('\OC\Updater', 'maintenanceDisabled', function () use ($eventSource, $l) {
		$eventSource->send('success', (string)$l->t('Turned off maintenance mode'));
	});
	$updater->listen('\OC\Updater', 'maintenanceActive', function () use ($eventSource, $l) {
		$eventSource->send('success', (string)$l->t('Maintenance mode is kept active'));
	});
	$updater->listen('\OC\Updater', 'dbUpgradeBefore', function () use($eventSource, $l) {
		$eventSource->send('success', (string)$l->t('Updating database schema'));
	});
	$updater->listen('\OC\Updater', 'dbUpgrade', function () use ($eventSource, $l) {
		$eventSource->send('success', (string)$l->t('Updated database'));
	});
	$updater->listen('\OC\Updater', 'dbSimulateUpgradeBefore', function () use($eventSource, $l) {
		$eventSource->send('success', (string)$l->t('Checking whether the database schema can be updated (this can take a long time depending on the database size)'));
	});
	$updater->listen('\OC\Updater', 'dbSimulateUpgrade', function () use ($eventSource, $l) {
		$eventSource->send('success', (string)$l->t('Checked database schema update'));
	});
	$updater->listen('\OC\Updater', 'appUpgradeCheckBefore', function () use ($eventSource, $l) {
		$eventSource->send('success', (string)$l->t('Checking updates of apps'));
	});
	$updater->listen('\OC\Updater', 'checkAppStoreAppBefore', function ($app) use ($eventSource, $l) {
		$eventSource->send('success', (string)$l->t('Checking for update of app "%s" in appstore', [$app]));
	});
	$updater->listen('\OC\Updater', 'upgradeAppStoreApp', function ($app) use ($eventSource, $l) {
		$eventSource->send('success', (string)$l->t('Update app "%s" from appstore', [$app]));
	});
	$updater->listen('\OC\Updater', 'checkAppStoreApp', function ($app) use ($eventSource, $l) {
		$eventSource->send('success', (string)$l->t('Checked for update of app "%s" in appstore', [$app]));
	});
	$updater->listen('\OC\Updater', 'appSimulateUpdate', function ($app) use ($eventSource, $l) {
		$eventSource->send('success', (string)$l->t('Checking whether the database schema for %s can be updated (this can take a long time depending on the database size)', [$app]));
	});
	$updater->listen('\OC\Updater', 'appUpgradeCheck', function () use ($eventSource, $l) {
		$eventSource->send('success', (string)$l->t('Checked database schema update for apps'));
	});
	$updater->listen('\OC\Updater', 'appUpgrade', function ($app, $version) use ($eventSource, $l) {
		$eventSource->send('success', (string)$l->t('Updated "%s" to %s', array($app, $version)));
	});
	$updater->listen('\OC\Updater', 'incompatibleAppDisabled', function ($app) use (&$incompatibleApps) {
		$incompatibleApps[]= $app;
	});
	$updater->listen('\OC\Updater', 'thirdPartyAppDisabled', function ($app) use (&$disabledThirdPartyApps) {
		$disabledThirdPartyApps[]= $app;
	});
	$updater->listen('\OC\Updater', 'failure', function ($message) use ($eventSource, $config) {
		$eventSource->send('failure', $message);
		$eventSource->close();
		$config->setSystemValue('maintenance', false);
	});
	$updater->listen('\OC\Updater', 'setDebugLogLevel', function ($logLevel, $logLevelName) use($eventSource, $l) {
		$eventSource->send('success', (string)$l->t('Set log level to debug'));
	});
	$updater->listen('\OC\Updater', 'resetLogLevel', function ($logLevel, $logLevelName) use($eventSource, $l) {
		$eventSource->send('success', (string)$l->t('Reset log level'));
	});
	$updater->listen('\OC\Updater', 'startCheckCodeIntegrity', function () use($eventSource, $l) {
		$eventSource->send('success', (string)$l->t('Starting code integrity check'));
	});
	$updater->listen('\OC\Updater', 'finishedCheckCodeIntegrity', function () use($eventSource, $l) {
		$eventSource->send('success', (string)$l->t('Finished code integrity check'));
	});

	try {
		$updater->upgrade();
	} catch (\Exception $e) {
		$eventSource->send('failure', get_class($e) . ': ' . $e->getMessage());
		$eventSource->close();
		exit();
	}

	$disabledApps = [];
	foreach ($disabledThirdPartyApps as $app) {
		$disabledApps[$app] = (string) $l->t('%s (3rdparty)', [$app]);
	}
	foreach ($incompatibleApps as $app) {
		$disabledApps[$app] = (string) $l->t('%s (incompatible)', [$app]);
	}

	if (!empty($disabledApps)) {
		$eventSource->send('notice',
			(string)$l->t('Following apps have been disabled: %s', [implode(', ', $disabledApps)]));
	}
} else {
	$eventSource->send('notice', (string)$l->t('Already up to date'));
}

$eventSource->send('done', '');
$eventSource->close();