700 lines
21 KiB
PHP
700 lines
21 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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*
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* @author Arthur Schiwon <blizzz@arthur-schiwon.de>
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* @author Bart Visscher <bartv@thisnet.nl>
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* @author Brice Maron <brice@bmaron.net>
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* @author Christian Weiske <cweiske@cweiske.de>
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* @author Christopher Schäpers <kondou@ts.unde.re>
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* @author Frank Karlitschek <frank@karlitschek.de>
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* @author Georg Ehrke <georg@owncloud.com>
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* @author Jakob Sack <mail@jakobsack.de>
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* @author Joas Schilling <coding@schilljs.com>
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* @author Jörn Friedrich Dreyer <jfd@butonic.de>
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* @author Kamil Domanski <kdomanski@kdemail.net>
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* @author Lukas Reschke <lukas@statuscode.ch>
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* @author michag86 <micha_g@arcor.de>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Robin Appelman <robin@icewind.nl>
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* @author Roeland Jago Douma <roeland@famdouma.nl>
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* @author root <root@oc.(none)>
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* @author Thomas Müller <thomas.mueller@tmit.eu>
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* @author Thomas Tanghus <thomas@tanghus.net>
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*
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* @license AGPL-3.0
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*
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* This code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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namespace OC;
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use OC\App\AppStore\Fetcher\AppFetcher;
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use OC\App\CodeChecker\CodeChecker;
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use OC\App\CodeChecker\EmptyCheck;
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use OC\App\CodeChecker\PrivateCheck;
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use OC\Archive\Archive;
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use OC_App;
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use OC_DB;
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use OC_Helper;
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use OCP\Http\Client\IClientService;
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use OCP\ILogger;
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use OCP\ITempManager;
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use phpseclib\File\X509;
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/**
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* This class provides the functionality needed to install, update and remove plugins/apps
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*/
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class Installer {
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/**
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*
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* This function installs an app. All information needed are passed in the
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* associative array $data.
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* The following keys are required:
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* - source: string, can be "path" or "http"
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*
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* One of the following keys is required:
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* - path: path to the file containing the app
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* - href: link to the downloadable file containing the app
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*
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* The following keys are optional:
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* - pretend: boolean, if set true the system won't do anything
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* - noinstall: boolean, if true appinfo/install.php won't be loaded
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* - inactive: boolean, if set true the appconfig/app.sample.php won't be
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* renamed
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*
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* This function works as follows
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* -# fetching the file
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* -# unzipping it
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* -# check the code
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* -# installing the database at appinfo/database.xml
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* -# including appinfo/install.php
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* -# setting the installed version
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*
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* It is the task of oc_app_install to create the tables and do whatever is
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* needed to get the app working.
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*
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* Installs an app
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* @param string $appId App to install
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* @throws \Exception
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* @return integer
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*/
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public function installApp($appId) {
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$basedir = OC_App::getInstallPath().'/'.$appId;
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$info = OC_App::getAppInfo($basedir.'/appinfo/info.xml', true);
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//install the database
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if(is_file($basedir.'/appinfo/database.xml')) {
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if (\OC::$server->getAppConfig()->getValue($info['id'], 'installed_version') === null) {
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OC_DB::createDbFromStructure($basedir.'/appinfo/database.xml');
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} else {
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OC_DB::updateDbFromStructure($basedir.'/appinfo/database.xml');
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}
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}
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\OC_App::setupBackgroundJobs($info['background-jobs']);
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//run appinfo/install.php
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if((!isset($data['noinstall']) or $data['noinstall']==false)) {
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self::includeAppScript($basedir . '/appinfo/install.php');
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}
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$appData = OC_App::getAppInfo($appId);
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OC_App::executeRepairSteps($appId, $appData['repair-steps']['install']);
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//set the installed version
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\OC::$server->getConfig()->setAppValue($info['id'], 'installed_version', OC_App::getAppVersion($info['id']));
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\OC::$server->getConfig()->setAppValue($info['id'], 'enabled', 'no');
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//set remote/public handlers
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foreach($info['remote'] as $name=>$path) {
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\OC::$server->getConfig()->setAppValue('core', 'remote_'.$name, $info['id'].'/'.$path);
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}
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foreach($info['public'] as $name=>$path) {
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\OC::$server->getConfig()->setAppValue('core', 'public_'.$name, $info['id'].'/'.$path);
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}
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OC_App::setAppTypes($info['id']);
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return $info['id'];
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}
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/**
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* @brief checks whether or not an app is installed
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* @param string $app app
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* @returns bool
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*
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* Checks whether or not an app is installed, i.e. registered in apps table.
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*/
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public static function isInstalled( $app ) {
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return (\OC::$server->getConfig()->getAppValue($app, "installed_version", null) !== null);
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}
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/**
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* @brief Update an application
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* @param array $info
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* @param bool $isShipped
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* @throws \Exception
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* @return bool
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*
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* This function could work like described below, but currently it disables and then
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* enables the app again. This does result in an updated app.
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*
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*
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* This function installs an app. All information needed are passed in the
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* associative array $info.
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* The following keys are required:
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* - source: string, can be "path" or "http"
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*
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* One of the following keys is required:
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* - path: path to the file containing the app
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* - href: link to the downloadable file containing the app
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*
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* The following keys are optional:
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* - pretend: boolean, if set true the system won't do anything
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* - noupgrade: boolean, if true appinfo/upgrade.php won't be loaded
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*
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* This function works as follows
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* -# fetching the file
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* -# removing the old files
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* -# unzipping new file
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* -# including appinfo/upgrade.php
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* -# setting the installed version
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*
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* upgrade.php can determine the current installed version of the app using
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* "\OC::$server->getAppConfig()->getValue($appid, 'installed_version')"
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*/
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public static function updateApp($info=array(), $isShipped=false) {
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list($extractDir, $path) = self::downloadApp($info);
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$info = self::checkAppsIntegrity($info, $extractDir, $path, $isShipped);
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$currentDir = OC_App::getAppPath($info['id']);
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$basedir = OC_App::getInstallPath();
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$basedir .= '/';
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$basedir .= $info['id'];
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if($currentDir !== false && is_writable($currentDir)) {
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$basedir = $currentDir;
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}
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if(is_dir($basedir)) {
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OC_Helper::rmdirr($basedir);
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}
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$appInExtractDir = $extractDir;
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if (substr($extractDir, -1) !== '/') {
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$appInExtractDir .= '/';
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}
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$appInExtractDir .= $info['id'];
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OC_Helper::copyr($appInExtractDir, $basedir);
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OC_Helper::rmdirr($extractDir);
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return OC_App::updateApp($info['id']);
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}
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/**
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* update an app by it's id
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*
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* @param integer $ocsId
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* @return bool
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* @throws \Exception
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*/
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public static function updateAppByOCSId($ocsId) {
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$ocsClient = new OCSClient(
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\OC::$server->getHTTPClientService(),
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\OC::$server->getConfig(),
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\OC::$server->getLogger()
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);
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$appData = $ocsClient->getApplication($ocsId, \OCP\Util::getVersion());
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$download = $ocsClient->getApplicationDownload($ocsId, \OCP\Util::getVersion());
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if (isset($download['downloadlink']) && trim($download['downloadlink']) !== '') {
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$download['downloadlink'] = str_replace(' ', '%20', $download['downloadlink']);
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$info = array(
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'source' => 'http',
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'href' => $download['downloadlink'],
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'appdata' => $appData
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);
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} else {
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throw new \Exception('Could not fetch app info!');
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}
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return self::updateApp($info);
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}
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/**
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* Downloads an app and puts it into the app directory
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*
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* @param string $appId
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* @param AppFetcher $appFetcher
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* @param IClientService $clientService
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* @param ITempManager $tempManager
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*
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* @throws \Exception If the installation was not successful
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*/
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public function downloadApp($appId,
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AppFetcher $appFetcher,
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IClientService $clientService,
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ITempManager $tempManager) {
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$appId = strtolower($appId);
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$apps = $appFetcher->get();
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foreach($apps as $app) {
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if($app['id'] === $appId) {
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// Load the certificate
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$certificate = new X509();
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$certificate->loadCA(file_get_contents(__DIR__ . '/../../resources/codesigning/root.crt'));
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$loadedCertificate = $certificate->loadX509($app['certificate']);
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// Verify if the certificate has been revoked
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$crl = new X509();
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$crl->loadCA(file_get_contents(__DIR__ . '/../../resources/codesigning/root.crt'));
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$crl->loadCRL(file_get_contents(__DIR__ . '/../../resources/codesigning/root.crl'));
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if($crl->validateSignature() !== true) {
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throw new \Exception('Could not validate CRL signature');
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}
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$csn = $loadedCertificate['tbsCertificate']['serialNumber']->toString();
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$revoked = $crl->getRevoked($csn);
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if ($revoked !== false) {
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throw new \Exception(
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sprintf(
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'Certificate "%s" has been revoked',
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$csn
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)
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);
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}
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// Verify if the certificate has been issued by the Nextcloud Code Authority CA
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if($certificate->validateSignature() !== true) {
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throw new \Exception(
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sprintf(
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'App with id %s has a certificate not issued by a trusted Code Signing Authority',
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$appId
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),
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[
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'app' => 'core',
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]
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);
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}
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// Verify if the certificate is issued for the requested app id
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$certInfo = openssl_x509_parse($app['certificate']);
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if(!isset($certInfo['subject']['CN'])) {
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throw new \Exception(
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sprintf(
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'App with id %s has a cert with no CN',
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$appId
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),
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[
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'app' => 'core',
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]
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);
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}
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if($certInfo['subject']['CN'] !== $appId) {
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throw new \Exception(
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sprintf(
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'App with id %s has a cert issued to %s',
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$appId,
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$certInfo['subject']['CN']
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),
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[
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'app' => 'core',
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]
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);
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}
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// Download the release
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$tempFile = $tempManager->getTemporaryFile('.tar.gz');
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$client = $clientService->newClient();
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$client->get($app['releases'][0]['download'], ['save_to' => $tempFile]);
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// Check if the signature actually matches the downloaded content
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$certificate = openssl_get_publickey($app['certificate']);
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$verified = (bool)openssl_verify(file_get_contents($tempFile), base64_decode($app['releases'][0]['signature']), $certificate, OPENSSL_ALGO_SHA512);
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openssl_free_key($certificate);
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if($verified === true) {
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// Seems to match, let's proceed
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$extractDir = $tempManager->getTemporaryFolder();
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$archive = Archive::open($tempFile);
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if($archive) {
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$archive->extract($extractDir);
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// Check if appinfo/info.xml has the same app ID as well
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$loadEntities = libxml_disable_entity_loader(false);
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$xml = simplexml_load_file($extractDir . '/' . $appId . '/appinfo/info.xml');
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libxml_disable_entity_loader($loadEntities);
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if((string)$xml->id !== $appId) {
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throw new \Exception(
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sprintf(
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'App for id %s has a wrong app ID in info.xml: %s',
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$appId,
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(string)$xml->id
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),
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[
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'app' => 'core',
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]
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);
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}
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// Move to app folder
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$baseDir = OC_App::getInstallPath().'/'.$appId;
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//copy the app to the correct place
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if(@mkdir($baseDir)) {
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$extractDir .= '/' . $appId;
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OC_Helper::copyr($extractDir, $baseDir);
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}
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OC_Helper::copyr($extractDir, $baseDir);
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OC_Helper::rmdirr($extractDir);
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} else {
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throw new \Exception(
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sprintf(
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'Could not extract app with ID %s to %s',
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$appId,
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$extractDir
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),
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[
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'app' => 'core',
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]
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);
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}
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} else {
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// Signature does not match
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throw new \Exception(
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sprintf(
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'App with id %s has invalid signature',
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$appId
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),
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[
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'app' => 'core',
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]
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);
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}
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}
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}
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}
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/**
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* check an app's integrity
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* @param array $data
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* @param string $extractDir
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* @param string $path
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* @param bool $isShipped
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* @return array
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* @throws \Exception
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*/
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public static function checkAppsIntegrity($data, $extractDir, $path, $isShipped = false) {
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$l = \OC::$server->getL10N('lib');
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//load the info.xml file of the app
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if(!is_file($extractDir.'/appinfo/info.xml')) {
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//try to find it in a subdir
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$dh=opendir($extractDir);
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if(is_resource($dh)) {
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while (($folder = readdir($dh)) !== false) {
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if($folder[0]!='.' and is_dir($extractDir.'/'.$folder)) {
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if(is_file($extractDir.'/'.$folder.'/appinfo/info.xml')) {
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$extractDir.='/'.$folder;
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}
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}
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}
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}
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}
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if(!is_file($extractDir.'/appinfo/info.xml')) {
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OC_Helper::rmdirr($extractDir);
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if($data['source'] === 'http') {
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unlink($path);
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}
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throw new \Exception($l->t("App does not provide an info.xml file"));
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}
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$info = OC_App::getAppInfo($extractDir.'/appinfo/info.xml', true);
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if(!is_array($info)) {
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throw new \Exception($l->t('App cannot be installed because appinfo file cannot be read.'));
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}
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// We can't trust the parsed info.xml file as it may have been tampered
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// with by an attacker and thus we need to use the local data to check
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// whether the application needs to be signed.
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$appId = OC_App::cleanAppId($data['appdata']['id']);
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$appBelongingToId = OC_App::getInternalAppIdByOcs($appId);
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if(is_string($appBelongingToId)) {
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$previouslySigned = \OC::$server->getConfig()->getAppValue($appBelongingToId, 'signed', 'false');
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} else {
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$appBelongingToId = $info['id'];
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$previouslySigned = 'false';
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}
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if($data['appdata']['level'] === OC_App::officialApp || $previouslySigned === 'true') {
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\OC::$server->getConfig()->setAppValue($appBelongingToId, 'signed', 'true');
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$integrityResult = \OC::$server->getIntegrityCodeChecker()->verifyAppSignature(
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$appBelongingToId,
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$extractDir
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);
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if($integrityResult !== []) {
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$e = new \Exception(
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$l->t(
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'Signature could not get checked. Please contact the app developer and check your admin screen.'
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)
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);
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throw $e;
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}
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}
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// check the code for not allowed calls
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if(!$isShipped && !Installer::checkCode($extractDir)) {
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OC_Helper::rmdirr($extractDir);
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throw new \Exception($l->t("App can't be installed because of not allowed code in the App"));
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}
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// check if the app is compatible with this version of ownCloud
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if(!OC_App::isAppCompatible(\OCP\Util::getVersion(), $info)) {
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OC_Helper::rmdirr($extractDir);
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throw new \Exception($l->t("App can't be installed because it is not compatible with this version of the server"));
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}
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// check if shipped tag is set which is only allowed for apps that are shipped with ownCloud
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if(!$isShipped && isset($info['shipped']) && ($info['shipped']=='true')) {
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OC_Helper::rmdirr($extractDir);
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throw new \Exception($l->t("App can't be installed because it contains the <shipped>true</shipped> tag which is not allowed for non shipped apps"));
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}
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// check if the ocs version is the same as the version in info.xml/version
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$version = trim($info['version']);
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if(isset($data['appdata']['version']) && $version<>trim($data['appdata']['version'])) {
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OC_Helper::rmdirr($extractDir);
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throw new \Exception($l->t("App can't be installed because the version in info.xml is not the same as the version reported from the app store"));
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}
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return $info;
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}
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/**
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* Check if an update for the app is available
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* @param string $app
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* @return string|false false or the version number of the update
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*
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* The function will check if an update for a version is available
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*/
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public static function isUpdateAvailable( $app ) {
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static $isInstanceReadyForUpdates = null;
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if ($isInstanceReadyForUpdates === null) {
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$installPath = OC_App::getInstallPath();
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if ($installPath === false || $installPath === null) {
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$isInstanceReadyForUpdates = false;
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} else {
|
|
$isInstanceReadyForUpdates = true;
|
|
}
|
|
}
|
|
|
|
if ($isInstanceReadyForUpdates === false) {
|
|
return false;
|
|
}
|
|
|
|
$ocsid=\OC::$server->getAppConfig()->getValue( $app, 'ocsid', '');
|
|
|
|
if($ocsid<>'') {
|
|
$ocsClient = new OCSClient(
|
|
\OC::$server->getHTTPClientService(),
|
|
\OC::$server->getConfig(),
|
|
\OC::$server->getLogger()
|
|
);
|
|
$ocsdata = $ocsClient->getApplication($ocsid, \OCP\Util::getVersion());
|
|
$ocsversion= (string) $ocsdata['version'];
|
|
$currentversion=OC_App::getAppVersion($app);
|
|
if (version_compare($ocsversion, $currentversion, '>')) {
|
|
return($ocsversion);
|
|
}else{
|
|
return false;
|
|
}
|
|
|
|
}else{
|
|
return false;
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* Check if app is already downloaded
|
|
* @param string $name name of the application to remove
|
|
* @return boolean
|
|
*
|
|
* The function will check if the app is already downloaded in the apps repository
|
|
*/
|
|
public function isDownloaded($name) {
|
|
foreach(\OC::$APPSROOTS as $dir) {
|
|
$dirToTest = $dir['path'];
|
|
$dirToTest .= '/';
|
|
$dirToTest .= $name;
|
|
$dirToTest .= '/';
|
|
|
|
if (is_dir($dirToTest)) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Removes an app
|
|
* @param string $appId ID of the application to remove
|
|
* @return boolean
|
|
*
|
|
*
|
|
* This function works as follows
|
|
* -# call uninstall repair steps
|
|
* -# removing the files
|
|
*
|
|
* The function will not delete preferences, tables and the configuration,
|
|
* this has to be done by the function oc_app_uninstall().
|
|
*/
|
|
public static function removeApp($appId) {
|
|
$installer = new Installer();
|
|
|
|
if($installer->isDownloaded( $appId )) {
|
|
$appDir=OC_App::getInstallPath() . '/' . $appId;
|
|
OC_Helper::rmdirr($appDir);
|
|
|
|
return true;
|
|
}else{
|
|
\OCP\Util::writeLog('core', 'can\'t remove app '.$appId.'. It is not installed.', \OCP\Util::ERROR);
|
|
|
|
return false;
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* Installs shipped apps
|
|
*
|
|
* This function installs all apps found in the 'apps' directory that should be enabled by default;
|
|
* @param bool $softErrors When updating we ignore errors and simply log them, better to have a
|
|
* working ownCloud at the end instead of an aborted update.
|
|
* @return array Array of error messages (appid => Exception)
|
|
*/
|
|
public static function installShippedApps($softErrors = false) {
|
|
$errors = [];
|
|
foreach(\OC::$APPSROOTS as $app_dir) {
|
|
if($dir = opendir( $app_dir['path'] )) {
|
|
while( false !== ( $filename = readdir( $dir ))) {
|
|
if( substr( $filename, 0, 1 ) != '.' and is_dir($app_dir['path']."/$filename") ) {
|
|
if( file_exists( $app_dir['path']."/$filename/appinfo/info.xml" )) {
|
|
if(!Installer::isInstalled($filename)) {
|
|
$info=OC_App::getAppInfo($filename);
|
|
$enabled = isset($info['default_enable']);
|
|
if (($enabled || in_array($filename, \OC::$server->getAppManager()->getAlwaysEnabledApps()))
|
|
&& \OC::$server->getConfig()->getAppValue($filename, 'enabled') !== 'no') {
|
|
if ($softErrors) {
|
|
try {
|
|
Installer::installShippedApp($filename);
|
|
} catch (\Doctrine\DBAL\Exception\TableExistsException $e) {
|
|
$errors[$filename] = $e;
|
|
continue;
|
|
}
|
|
} else {
|
|
Installer::installShippedApp($filename);
|
|
}
|
|
\OC::$server->getConfig()->setAppValue($filename, 'enabled', 'yes');
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
closedir( $dir );
|
|
}
|
|
}
|
|
|
|
return $errors;
|
|
}
|
|
|
|
/**
|
|
* install an app already placed in the app folder
|
|
* @param string $app id of the app to install
|
|
* @return integer
|
|
*/
|
|
public static function installShippedApp($app) {
|
|
//install the database
|
|
$appPath = OC_App::getAppPath($app);
|
|
if(is_file("$appPath/appinfo/database.xml")) {
|
|
OC_DB::createDbFromStructure("$appPath/appinfo/database.xml");
|
|
}
|
|
|
|
//run appinfo/install.php
|
|
\OC_App::registerAutoloading($app, $appPath);
|
|
self::includeAppScript("$appPath/appinfo/install.php");
|
|
|
|
$info = OC_App::getAppInfo($app);
|
|
if (is_null($info)) {
|
|
return false;
|
|
}
|
|
\OC_App::setupBackgroundJobs($info['background-jobs']);
|
|
|
|
OC_App::executeRepairSteps($app, $info['repair-steps']['install']);
|
|
|
|
$config = \OC::$server->getConfig();
|
|
|
|
$config->setAppValue($app, 'installed_version', OC_App::getAppVersion($app));
|
|
if (array_key_exists('ocsid', $info)) {
|
|
$config->setAppValue($app, 'ocsid', $info['ocsid']);
|
|
}
|
|
|
|
//set remote/public handlers
|
|
foreach($info['remote'] as $name=>$path) {
|
|
$config->setAppValue('core', 'remote_'.$name, $app.'/'.$path);
|
|
}
|
|
foreach($info['public'] as $name=>$path) {
|
|
$config->setAppValue('core', 'public_'.$name, $app.'/'.$path);
|
|
}
|
|
|
|
OC_App::setAppTypes($info['id']);
|
|
|
|
if(isset($info['settings']) && is_array($info['settings'])) {
|
|
// requires that autoloading was registered for the app,
|
|
// as happens before running the install.php some lines above
|
|
\OC::$server->getSettingsManager()->setupSettings($info['settings']);
|
|
}
|
|
|
|
return $info['id'];
|
|
}
|
|
|
|
/**
|
|
* check the code of an app with some static code checks
|
|
* @param string $folder the folder of the app to check
|
|
* @return boolean true for app is o.k. and false for app is not o.k.
|
|
*/
|
|
public static function checkCode($folder) {
|
|
// is the code checker enabled?
|
|
if(!\OC::$server->getConfig()->getSystemValue('appcodechecker', false)) {
|
|
return true;
|
|
}
|
|
|
|
$codeChecker = new CodeChecker(new PrivateCheck(new EmptyCheck()));
|
|
$errors = $codeChecker->analyseFolder(basename($folder), $folder);
|
|
|
|
return empty($errors);
|
|
}
|
|
|
|
/**
|
|
* @param $basedir
|
|
*/
|
|
private static function includeAppScript($script) {
|
|
if ( file_exists($script) ){
|
|
include $script;
|
|
}
|
|
}
|
|
}
|