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<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Arthur Schiwon <blizzz@arthur-schiwon.de>
* @author Bjoern Schiessle <bjoern@schiessle.org>
* @author Derek <derek.kelly27@gmail.com>
* @author Joas Schilling <coding@schilljs.com>
* @author Ko- <k.stoffelen@cs.ru.nl>
* @author Lukas Reschke <lukas@statuscode.ch>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Robin McCorkell <robin@mccorkell.me.uk>
* @author Roeland Jago Douma <roeland@famdouma.nl>
*
* @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/>
*
*/
namespace OC\Settings\Controller;
use bantu\IniGetWrapper\IniGetWrapper;
use GuzzleHttp\Exception\ClientException;
use OC\AppFramework\Http;
use OC\IntegrityCheck\Checker;
use OCP\AppFramework\Controller;
use OCP\AppFramework\Http\DataDisplayResponse;
use OCP\AppFramework\Http\DataResponse;
use OCP\AppFramework\Http\RedirectResponse;
use OCP\Http\Client\IClientService;
use OCP\IConfig;
use OCP\IL10N;
use OCP\ILogger;
use OCP\IRequest;
use OC_Util;
use OCP\IURLGenerator;
/**
* @package OC\Settings\Controller
*/
class CheckSetupController extends Controller {
/** @var IConfig */
private $config;
/** @var IClientService */
private $clientService;
/** @var \OC_Util */
private $util;
/** @var IURLGenerator */
private $urlGenerator;
/** @var IL10N */
private $l10n;
/** @var Checker */
private $checker;
/** @var ILogger */
private $logger;
/**
* @param string $AppName
* @param IRequest $request
* @param IConfig $config
* @param IClientService $clientService
* @param IURLGenerator $urlGenerator
* @param \OC_Util $util
* @param IL10N $l10n
* @param Checker $checker
* @param ILogger $logger
*/
public function __construct($AppName,
IRequest $request,
IConfig $config,
IClientService $clientService,
IURLGenerator $urlGenerator,
\OC_Util $util,
IL10N $l10n,
Checker $checker,
ILogger $logger) {
parent::__construct($AppName, $request);
$this->config = $config;
$this->clientService = $clientService;
$this->util = $util;
$this->urlGenerator = $urlGenerator;
$this->l10n = $l10n;
$this->checker = $checker;
$this->logger = $logger;
}
/**
* Checks if the ownCloud server can connect to the internet using HTTPS and HTTP
* @return bool
*/
private function isInternetConnectionWorking() {
if ($this->config->getSystemValue('has_internet_connection', true) === false) {
return false;
}
$siteArray = ['www.nextcloud.com',
'www.google.com',
'www.github.com'];
foreach($siteArray as $site) {
if ($this->isSiteReachable($site)) {
return true;
}
}
return false;
}
/**
* Chceks if the ownCloud server can connect to a specific URL using both HTTPS and HTTP
* @return bool
*/
private function isSiteReachable($sitename) {
$httpSiteName = 'http://' . $sitename . '/';
$httpsSiteName = 'https://' . $sitename . '/';
try {
$client = $this->clientService->newClient();
$client->get($httpSiteName);
$client->get($httpsSiteName);
} catch (\Exception $e) {
$this->logger->logException($e, ['app' => 'internet_connection_check']);
return false;
}
return true;
}
/**
* Checks whether a local memcache is installed or not
* @return bool
*/
private function isMemcacheConfigured() {
return $this->config->getSystemValue('memcache.local', null) !== null;
}
/**
* Whether /dev/urandom is available to the PHP controller
*
* @return bool
*/
private function isUrandomAvailable() {
if(@file_exists('/dev/urandom')) {
$file = fopen('/dev/urandom', 'rb');
if($file) {
fclose($file);
return true;
}
}
return false;
}
/**
* Public for the sake of unit-testing
*
* @return array
*/
protected function getCurlVersion() {
return curl_version();
}
/**
* Check if the used SSL lib is outdated. Older OpenSSL and NSS versions do
* have multiple bugs which likely lead to problems in combination with
* functionality required by ownCloud such as SNI.
*
* @link https://github.com/owncloud/core/issues/17446#issuecomment-122877546
* @link https://bugzilla.redhat.com/show_bug.cgi?id=1241172
* @return string
*/
private function isUsedTlsLibOutdated() {
// Don't run check when:
// 1. Server has `has_internet_connection` set to false
// 2. AppStore AND S2S is disabled
if(!$this->config->getSystemValue('has_internet_connection', true)) {
return '';
}
if(!$this->config->getSystemValue('appstoreenabled', true)
&& $this->config->getAppValue('files_sharing', 'outgoing_server2server_share_enabled', 'yes') === 'no'
&& $this->config->getAppValue('files_sharing', 'incoming_server2server_share_enabled', 'yes') === 'no') {
return '';
}
$versionString = $this->getCurlVersion();
if(isset($versionString['ssl_version'])) {
$versionString = $versionString['ssl_version'];
} else {
return '';
}
$features = (string)$this->l10n->t('installing and updating apps via the app store or Federated Cloud Sharing');
if(!$this->config->getSystemValue('appstoreenabled', true)) {
$features = (string)$this->l10n->t('Federated Cloud Sharing');
}
// Check if at least OpenSSL after 1.01d or 1.0.2b
if(strpos($versionString, 'OpenSSL/') === 0) {
$majorVersion = substr($versionString, 8, 5);
$patchRelease = substr($versionString, 13, 6);
if(($majorVersion === '1.0.1' && ord($patchRelease) < ord('d')) ||
($majorVersion === '1.0.2' && ord($patchRelease) < ord('b'))) {
return (string) $this->l10n->t('cURL is using an outdated %s version (%s). Please update your operating system or features such as %s will not work reliably.', ['OpenSSL', $versionString, $features]);
}
}
// Check if NSS and perform heuristic check
if(strpos($versionString, 'NSS/') === 0) {
try {
$firstClient = $this->clientService->newClient();
$firstClient->get('https://nextcloud.com/');
$secondClient = $this->clientService->newClient();
$secondClient->get('https://nextcloud.com/');
} catch (ClientException $e) {
if($e->getResponse()->getStatusCode() === 400) {
return (string) $this->l10n->t('cURL is using an outdated %s version (%s). Please update your operating system or features such as %s will not work reliably.', ['NSS', $versionString, $features]);
}
}
}
return '';
}
/**
* Whether the version is outdated
*
* @return bool
*/
protected function isPhpOutdated() {
if (version_compare(PHP_VERSION, '7.0.0', '<')) {
return true;
}
return false;
}
/**
* Whether the php version is still supported (at time of release)
* according to: https://secure.php.net/supported-versions.php
*
* @return array
*/
private function isPhpSupported() {
return ['eol' => $this->isPhpOutdated(), 'version' => PHP_VERSION];
}
/**
* Check if the reverse proxy configuration is working as expected
*
* @return bool
*/
private function forwardedForHeadersWorking() {
$trustedProxies = $this->config->getSystemValue('trusted_proxies', []);
$remoteAddress = $this->request->getRemoteAddress();
if (is_array($trustedProxies) && in_array($remoteAddress, $trustedProxies)) {
return false;
}
// either not enabled or working correctly
return true;
}
/**
* Checks if the correct memcache module for PHP is installed. Only
* fails if memcached is configured and the working module is not installed.
*
* @return bool
*/
private function isCorrectMemcachedPHPModuleInstalled() {
if ($this->config->getSystemValue('memcache.distributed', null) !== '\OC\Memcache\Memcached') {
return true;
}
// there are two different memcached modules for PHP
// we only support memcached and not memcache
// https://code.google.com/p/memcached/wiki/PHPClientComparison
return !(!extension_loaded('memcached') && extension_loaded('memcache'));
}
/**
* Checks if set_time_limit is not disabled.
*
* @return bool
*/
private function isSettimelimitAvailable() {
if (function_exists('set_time_limit')
&& strpos(@ini_get('disable_functions'), 'set_time_limit') === false) {
return true;
}
return false;
}
/**
* @return RedirectResponse
*/
public function rescanFailedIntegrityCheck() {
$this->checker->runInstanceVerification();
return new RedirectResponse(
$this->urlGenerator->linkToRoute('settings.AdminSettings.index')
);
}
/**
* @NoCSRFRequired
* @return DataResponse
*/
public function getFailedIntegrityCheckFiles() {
if(!$this->checker->isCodeCheckEnforced()) {
return new DataDisplayResponse('Integrity checker has been disabled. Integrity cannot be verified.');
}
$completeResults = $this->checker->getResults();
if(!empty($completeResults)) {
$formattedTextResponse = 'Technical information
=====================
The following list covers which files have failed the integrity check. Please read
the previous linked documentation to learn more about the errors and how to fix
them.
Results
=======
';
foreach($completeResults as $context => $contextResult) {
$formattedTextResponse .= "- $context\n";
foreach($contextResult as $category => $result) {
$formattedTextResponse .= "\t- $category\n";
if($category !== 'EXCEPTION') {
foreach ($result as $key => $results) {
$formattedTextResponse .= "\t\t- $key\n";
}
} else {
foreach ($result as $key => $results) {
$formattedTextResponse .= "\t\t- $results\n";
}
}
}
}
$formattedTextResponse .= '
Raw output
==========
';
$formattedTextResponse .= print_r($completeResults, true);
} else {
$formattedTextResponse = 'No errors have been found.';
}
$response = new DataDisplayResponse(
$formattedTextResponse,
Http::STATUS_OK,
[
'Content-Type' => 'text/plain',
]
);
return $response;
}
/**
* Checks whether a PHP opcache is properly set up
* @return bool
*/
protected function isOpcacheProperlySetup() {
$iniWrapper = new IniGetWrapper();
$isOpcacheProperlySetUp = true;
if(!$iniWrapper->getBool('opcache.enable')) {
$isOpcacheProperlySetUp = false;
}
if(!$iniWrapper->getBool('opcache.save_comments')) {
$isOpcacheProperlySetUp = false;
}
if(!$iniWrapper->getBool('opcache.enable_cli')) {
$isOpcacheProperlySetUp = false;
}
if($iniWrapper->getNumeric('opcache.max_accelerated_files') < 10000) {
$isOpcacheProperlySetUp = false;
}
if($iniWrapper->getNumeric('opcache.memory_consumption') < 128) {
$isOpcacheProperlySetUp = false;
}
if($iniWrapper->getNumeric('opcache.interned_strings_buffer') < 8) {
$isOpcacheProperlySetUp = false;
}
return $isOpcacheProperlySetUp;
}
/**
* Check if the required FreeType functions are present
* @return bool
*/
protected function hasFreeTypeSupport() {
return function_exists('imagettfbbox') && function_exists('imagettftext');
}
/**
* @return DataResponse
*/
public function check() {
return new DataResponse(
[
'serverHasInternetConnection' => $this->isInternetConnectionWorking(),
'isMemcacheConfigured' => $this->isMemcacheConfigured(),
'memcacheDocs' => $this->urlGenerator->linkToDocs('admin-performance'),
'isUrandomAvailable' => $this->isUrandomAvailable(),
'securityDocs' => $this->urlGenerator->linkToDocs('admin-security'),
'isUsedTlsLibOutdated' => $this->isUsedTlsLibOutdated(),
'phpSupported' => $this->isPhpSupported(),
'forwardedForHeadersWorking' => $this->forwardedForHeadersWorking(),
'reverseProxyDocs' => $this->urlGenerator->linkToDocs('admin-reverse-proxy'),
'isCorrectMemcachedPHPModuleInstalled' => $this->isCorrectMemcachedPHPModuleInstalled(),
'hasPassedCodeIntegrityCheck' => $this->checker->hasPassedCheck(),
'codeIntegrityCheckerDocumentation' => $this->urlGenerator->linkToDocs('admin-code-integrity'),
'isOpcacheProperlySetup' => $this->isOpcacheProperlySetup(),
'phpOpcacheDocumentation' => $this->urlGenerator->linkToDocs('admin-php-opcache'),
'isSettimelimitAvailable' => $this->isSettimelimitAvailable(),
'hasFreeTypeSupport' => $this->hasFreeTypeSupport(),
]
);
}
}