PHP OC_User::setIncognitoMode方法代码示例

 /**
  * Validates a username and password
  *
  * This method should return true or false depending on if login
  * succeeded.
  *
  * @param string $username
  * @param string $password
  *
  * @return bool
  */
 protected function validateUserPass($username, $password)
 {
     $linkItem = \OCP\Share::getShareByToken($username, false);
     \OC_User::setIncognitoMode(true);
     $this->share = $linkItem;
     if (!$linkItem) {
         return false;
     }
     // check if the share is password protected
     if (isset($linkItem['share_with'])) {
         if ($linkItem['share_type'] == \OCP\Share::SHARE_TYPE_LINK) {
             // Check Password
             $forcePortable = CRYPT_BLOWFISH != 1;
             $hasher = new \PasswordHash(8, $forcePortable);
             if (!$hasher->CheckPassword($password . $this->config->getSystemValue('passwordsalt', ''), $linkItem['share_with'])) {
                 return false;
             } else {
                 return true;
             }
         } else {
             return false;
         }
     } else {
         return true;
     }
 }

 protected function tearDown()
 {
     \OC_User::setIncognitoMode(false);
     // Set old user
     \OC_User::setUserId($this->oldUser);
     \OC_Util::setupFS($this->oldUser);
     parent::tearDown();
 }

 public static function showShare($args)
 {
     \OC_Util::checkAppEnabled('files_sharing');
     $token = $args['token'];
     \OC_App::loadApp('files_sharing');
     \OC_User::setIncognitoMode(true);
     require_once \OC_App::getAppPath('files_sharing') . '/public.php';
 }

 protected function tearDown()
 {
     \OC_Util::tearDownFS();
     \OC_User::setUserId('');
     Filesystem::tearDown();
     \OC_User::deleteUser($this->user);
     \OC_User::setIncognitoMode(false);
     \OC::$server->getSession()->set('public_link_authenticated', '');
     // Set old user
     \OC_User::setUserId($this->oldUser);
     \OC_Util::setupFS($this->oldUser);
 }

 /**
  * Sets up the filesystem and user for public sharing
  * @param string $token string share token
  * @param string $relativePath optional path relative to the share
  * @param string $password optional password
  * @return array
  */
 public static function setupFromToken($token, $relativePath = null, $password = null)
 {
     \OC_User::setIncognitoMode(true);
     $linkItem = \OCP\Share::getShareByToken($token, !$password);
     if ($linkItem === false || $linkItem['item_type'] !== 'file' && $linkItem['item_type'] !== 'folder') {
         \OC_Response::setStatus(404);
         \OCP\Util::writeLog('core-preview', 'Passed token parameter is not valid', \OCP\Util::DEBUG);
         exit;
     }
     if (!isset($linkItem['uid_owner']) || !isset($linkItem['file_source'])) {
         \OC_Response::setStatus(500);
         \OCP\Util::writeLog('core-preview', 'Passed token seems to be valid, but it does not contain all necessary information . ("' . $token . '")', \OCP\Util::WARN);
         exit;
     }
     $rootLinkItem = \OCP\Share::resolveReShare($linkItem);
     $path = null;
     if (isset($rootLinkItem['uid_owner'])) {
         \OCP\JSON::checkUserExists($rootLinkItem['uid_owner']);
         \OC_Util::tearDownFS();
         \OC_Util::setupFS($rootLinkItem['uid_owner']);
     }
     try {
         $path = Filesystem::getPath($linkItem['file_source']);
     } catch (NotFoundException $e) {
         \OCP\Util::writeLog('share', 'could not resolve linkItem', \OCP\Util::DEBUG);
         \OC_Response::setStatus(404);
         \OCP\JSON::error(array('success' => false));
         exit;
     }
     if (!isset($linkItem['item_type'])) {
         \OCP\Util::writeLog('share', 'No item type set for share id: ' . $linkItem['id'], \OCP\Util::ERROR);
         \OC_Response::setStatus(404);
         \OCP\JSON::error(array('success' => false));
         exit;
     }
     if (isset($linkItem['share_with']) && (int) $linkItem['share_type'] === \OCP\Share::SHARE_TYPE_LINK) {
         if (!self::authenticate($linkItem, $password)) {
             \OC_Response::setStatus(403);
             \OCP\JSON::error(array('success' => false));
             exit;
         }
     }
     $basePath = $path;
     if ($relativePath !== null && Filesystem::isReadable($basePath . $relativePath)) {
         $path .= Filesystem::normalizePath($relativePath);
     }
     return array('linkItem' => $linkItem, 'basePath' => $basePath, 'realPath' => $path);
 }

 /**
  * Validates a username and password
  *
  * This method should return true or false depending on if login
  * succeeded.
  *
  * @param string $username
  * @param string $password
  *
  * @return bool
  */
 protected function validateUserPass($username, $password)
 {
     $linkItem = \OCP\Share::getShareByToken($username, false);
     \OC_User::setIncognitoMode(true);
     $this->share = $linkItem;
     if (!$linkItem) {
         return false;
     }
     // check if the share is password protected
     if (isset($linkItem['share_with'])) {
         if ($linkItem['share_type'] == \OCP\Share::SHARE_TYPE_LINK) {
             // Check Password
             $newHash = '';
             if (\OC::$server->getHasher()->verify($password, $linkItem['share_with'], $newHash)) {
                 /**
                  * FIXME: Migrate old hashes to new hash format
                  * Due to the fact that there is no reasonable functionality to update the password
                  * of an existing share no migration is yet performed there.
                  * The only possibility is to update the existing share which will result in a new
                  * share ID and is a major hack.
                  *
                  * In the future the migration should be performed once there is a proper method
                  * to update the share's password. (for example `$share->updatePassword($password)`
                  *
                  * @link https://github.com/owncloud/core/issues/10671
                  */
                 if (!empty($newHash)) {
                 }
                 return true;
             } else {
                 if (\OC::$server->getSession()->exists('public_link_authenticated') && \OC::$server->getSession()->get('public_link_authenticated') === $linkItem['id']) {
                     return true;
                 } else {
                     return false;
                 }
             }
         } else {
             if ($linkItem['share_type'] == \OCP\Share::SHARE_TYPE_REMOTE) {
                 return true;
             } else {
                 return false;
             }
         }
     } else {
         return true;
     }
 }

 /**
  * Validates a username and password
  *
  * This method should return true or false depending on if login
  * succeeded.
  *
  * @param string $username
  * @param string $password
  *
  * @return bool
  * @throws \Sabre\DAV\Exception\NotAuthenticated
  */
 protected function validateUserPass($username, $password)
 {
     try {
         $share = $this->shareManager->getShareByToken($username);
     } catch (ShareNotFound $e) {
         return false;
     }
     $this->share = $share;
     \OC_User::setIncognitoMode(true);
     // check if the share is password protected
     if ($share->getPassword() !== null) {
         if ($share->getShareType() === \OCP\Share::SHARE_TYPE_LINK) {
             if ($this->shareManager->checkPassword($share, $password)) {
                 return true;
             } else {
                 if ($this->session->exists('public_link_authenticated') && $this->session->get('public_link_authenticated') === (string) $share->getId()) {
                     return true;
                 } else {
                     if (in_array('XMLHttpRequest', explode(',', $this->request->getHeader('X-Requested-With')))) {
                         // do not re-authenticate over ajax, use dummy auth name to prevent browser popup
                         http_response_code(401);
                         header('WWW-Authenticate', 'DummyBasic realm="' . $this->realm . '"');
                         throw new \Sabre\DAV\Exception\NotAuthenticated('Cannot authenticate over ajax calls');
                     }
                     return false;
                 }
             }
         } else {
             if ($share->getShareType() === \OCP\Share::SHARE_TYPE_REMOTE) {
                 return true;
             } else {
                 return false;
             }
         }
     } else {
         return true;
     }
 }

 *
 * 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/>
 *
 */
OCP\JSON::checkAppEnabled('files_sharing');
\OC_User::setIncognitoMode(true);
$file = array_key_exists('file', $_GET) ? (string) $_GET['file'] : '';
$maxX = array_key_exists('x', $_GET) ? (int) $_GET['x'] : '32';
$maxY = array_key_exists('y', $_GET) ? (int) $_GET['y'] : '32';
$scalingUp = array_key_exists('scalingup', $_GET) ? (bool) $_GET['scalingup'] : true;
$token = array_key_exists('t', $_GET) ? (string) $_GET['t'] : '';
$keepAspect = array_key_exists('a', $_GET) ? true : false;
if ($token === '') {
    \OC_Response::setStatus(\OC_Response::STATUS_BAD_REQUEST);
    \OCP\Util::writeLog('core-preview', 'No token parameter was passed', \OCP\Util::DEBUG);
    exit;
}
$linkedItem = \OCP\Share::getShareByToken($token);
if ($linkedItem === false || $linkedItem['item_type'] !== 'file' && $linkedItem['item_type'] !== 'folder') {
    \OC_Response::setStatus(\OC_Response::STATUS_NOT_FOUND);
    \OCP\Util::writeLog('core-preview', 'Passed token parameter is not valid', \OCP\Util::DEBUG);

 /**
  * @PublicPage
  * @NoCSRFRequired
  *
  * @param string $token
  * @param string $files
  * @param string $path
  * @return void|RedirectResponse
  */
 public function downloadShare($token, $files = null, $path = '')
 {
     \OC_User::setIncognitoMode(true);
     $linkItem = OCP\Share::getShareByToken($token, false);
     // Share is password protected - check whether the user is permitted to access the share
     if (isset($linkItem['share_with'])) {
         if (!Helper::authenticate($linkItem)) {
             return new RedirectResponse($this->urlGenerator->linkToRoute('files_sharing.sharecontroller.authenticate', array('token' => $token)));
         }
     }
     $originalSharePath = self::getPath($token);
     if (isset($originalSharePath) && Filesystem::isReadable($originalSharePath . $path)) {
         $originalSharePath = Filesystem::normalizePath($originalSharePath . $path);
         $type = \OC\Files\Filesystem::is_dir($originalSharePath) ? 'folder' : 'file';
         $args = $type === 'folder' ? array('dir' => $originalSharePath) : array('dir' => dirname($originalSharePath), 'scrollto' => basename($originalSharePath));
         $linkToFile = \OCP\Util::linkToAbsolute('files', 'index.php', $args);
         $subject = $type === 'folder' ? Activity::SUBJECT_PUBLIC_SHARED_FOLDER_DOWNLOADED : Activity::SUBJECT_PUBLIC_SHARED_FILE_DOWNLOADED;
         $this->activityManager->publishActivity('files_sharing', $subject, array($originalSharePath), '', array(), $originalSharePath, $linkToFile, $linkItem['uid_owner'], Activity::TYPE_PUBLIC_LINKS, Activity::PRIORITY_MEDIUM);
     }
     if (!is_null($files)) {
         // download selected files
         $files_list = json_decode($files);
         // in case we get only a single file
         if ($files_list === NULL) {
             $files_list = array($files);
         }
         // FIXME: The exit is required here because otherwise the AppFramework is trying to add headers as well
         // after dispatching the request which results in a "Cannot modify header information" notice.
         OC_Files::get($originalSharePath, $files_list, $_SERVER['REQUEST_METHOD'] == 'HEAD');
         exit;
     } else {
         // FIXME: The exit is required here because otherwise the AppFramework is trying to add headers as well
         // after dispatching the request which results in a "Cannot modify header information" notice.
         OC_Files::get(dirname($originalSharePath), basename($originalSharePath), $_SERVER['REQUEST_METHOD'] == 'HEAD');
         exit;
     }
 }

 /**
  * @PublicPage
  * @NoCSRFRequired
  *
  * @param string $token
  * @param string $files
  * @param string $path
  * @return void|RedirectResponse
  */
 public function downloadShare($token, $files = null, $path = '')
 {
     \OC_User::setIncognitoMode(true);
     $linkItem = OCP\Share::getShareByToken($token, false);
     // Share is password protected - check whether the user is permitted to access the share
     if (isset($linkItem['share_with'])) {
         if (!Helper::authenticate($linkItem)) {
             return new RedirectResponse($this->urlGenerator->linkToRoute('files_sharing.sharecontroller.authenticate', array('token' => $token)));
         }
     }
     $files_list = null;
     if (!is_null($files)) {
         // download selected files
         $files_list = json_decode($files);
         // in case we get only a single file
         if ($files_list === null) {
             $files_list = array($files);
         }
     }
     $originalSharePath = self::getPath($token);
     // Create the activities
     if (isset($originalSharePath) && Filesystem::isReadable($originalSharePath . $path)) {
         $originalSharePath = Filesystem::normalizePath($originalSharePath . $path);
         $isDir = \OC\Files\Filesystem::is_dir($originalSharePath);
         $activities = [];
         if (!$isDir) {
             // Single file public share
             $activities[$originalSharePath] = Activity::SUBJECT_PUBLIC_SHARED_FILE_DOWNLOADED;
         } else {
             if (!empty($files_list)) {
                 // Only some files are downloaded
                 foreach ($files_list as $file) {
                     $filePath = Filesystem::normalizePath($originalSharePath . '/' . $file);
                     $isDir = \OC\Files\Filesystem::is_dir($filePath);
                     $activities[$filePath] = $isDir ? Activity::SUBJECT_PUBLIC_SHARED_FOLDER_DOWNLOADED : Activity::SUBJECT_PUBLIC_SHARED_FILE_DOWNLOADED;
                 }
             } else {
                 // The folder is downloaded
                 $activities[$originalSharePath] = Activity::SUBJECT_PUBLIC_SHARED_FOLDER_DOWNLOADED;
             }
         }
         foreach ($activities as $filePath => $subject) {
             $this->activityManager->publishActivity('files_sharing', $subject, array($filePath), '', array(), $filePath, '', $linkItem['uid_owner'], Activity::TYPE_PUBLIC_LINKS, Activity::PRIORITY_MEDIUM);
         }
     }
     // download selected files
     if (!is_null($files)) {
         // FIXME: The exit is required here because otherwise the AppFramework is trying to add headers as well
         // after dispatching the request which results in a "Cannot modify header information" notice.
         OC_Files::get($originalSharePath, $files_list, $_SERVER['REQUEST_METHOD'] == 'HEAD');
         exit;
     } else {
         // FIXME: The exit is required here because otherwise the AppFramework is trying to add headers as well
         // after dispatching the request which results in a "Cannot modify header information" notice.
         OC_Files::get(dirname($originalSharePath), basename($originalSharePath), $_SERVER['REQUEST_METHOD'] == 'HEAD');
         exit;
     }
 }

 protected function tearDown()
 {
     \OC_Util::tearDownFS();
     \OC_User::setUserId('');
     Filesystem::tearDown();
     $user = \OC::$server->getUserManager()->get($this->user);
     if ($user !== null) {
         $user->delete();
     }
     \OC_User::setIncognitoMode(false);
     \OC::$server->getSession()->set('public_link_authenticated', '');
     // Set old user
     \OC_User::setUserId($this->oldUser);
     \OC_Util::setupFS($this->oldUser);
     parent::tearDown();
 }

//.........这里部分代码省略.........
     stream_wrapper_register('static', 'OC\\Files\\Stream\\StaticStream');
     stream_wrapper_register('close', 'OC\\Files\\Stream\\Close');
     stream_wrapper_register('quota', 'OC\\Files\\Stream\\Quota');
     stream_wrapper_register('oc', 'OC\\Files\\Stream\\OC');
     \OC::$server->getEventLogger()->start('init_session', 'Initialize session');
     OC_App::loadApps(array('session'));
     if (!self::$CLI) {
         self::initSession();
     }
     \OC::$server->getEventLogger()->end('init_session');
     self::checkConfig();
     self::checkInstalled();
     OC_Response::addSecurityHeaders();
     if (self::$server->getRequest()->getServerProtocol() === 'https') {
         ini_set('session.cookie_secure', true);
     }
     if (!defined('OC_CONSOLE')) {
         $errors = OC_Util::checkServer(\OC::$server->getConfig());
         if (count($errors) > 0) {
             if (self::$CLI) {
                 // Convert l10n string into regular string for usage in database
                 $staticErrors = [];
                 foreach ($errors as $error) {
                     echo $error['error'] . "\n";
                     echo $error['hint'] . "\n\n";
                     $staticErrors[] = ['error' => (string) $error['error'], 'hint' => (string) $error['hint']];
                 }
                 try {
                     \OC::$server->getConfig()->setAppValue('core', 'cronErrors', json_encode($staticErrors));
                 } catch (\Exception $e) {
                     echo 'Writing to database failed';
                 }
                 exit(1);
             } else {
                 OC_Response::setStatus(OC_Response::STATUS_SERVICE_UNAVAILABLE);
                 OC_Template::printGuestPage('', 'error', array('errors' => $errors));
                 exit;
             }
         } elseif (self::$CLI && \OC::$server->getConfig()->getSystemValue('installed', false)) {
             \OC::$server->getConfig()->deleteAppValue('core', 'cronErrors');
         }
     }
     //try to set the session lifetime
     $sessionLifeTime = self::getSessionLifeTime();
     @ini_set('gc_maxlifetime', (string) $sessionLifeTime);
     $systemConfig = \OC::$server->getSystemConfig();
     // User and Groups
     if (!$systemConfig->getValue("installed", false)) {
         self::$server->getSession()->set('user_id', '');
     }
     OC_User::useBackend(new \OC\User\Database());
     OC_Group::useBackend(new \OC\Group\Database());
     // Subscribe to the hook
     \OCP\Util::connectHook('\\OCA\\Files_Sharing\\API\\Server2Server', 'preLoginNameUsedAsUserName', '\\OC\\User\\Database', 'preLoginNameUsedAsUserName');
     //setup extra user backends
     if (!self::checkUpgrade(false)) {
         OC_User::setupBackends();
     } else {
         // Run upgrades in incognito mode
         OC_User::setIncognitoMode(true);
     }
     self::registerCacheHooks();
     self::registerFilesystemHooks();
     if ($systemConfig->getValue('enable_previews', true)) {
         self::registerPreviewHooks();
     }
     self::registerShareHooks();
     self::registerLogRotate();
     self::registerEncryptionWrapper();
     self::registerEncryptionHooks();
     //make sure temporary files are cleaned up
     $tmpManager = \OC::$server->getTempManager();
     register_shutdown_function(array($tmpManager, 'clean'));
     $lockProvider = \OC::$server->getLockingProvider();
     register_shutdown_function(array($lockProvider, 'releaseAll'));
     // Check whether the sample configuration has been copied
     if ($systemConfig->getValue('copied_sample_config', false)) {
         $l = \OC::$server->getL10N('lib');
         header('HTTP/1.1 503 Service Temporarily Unavailable');
         header('Status: 503 Service Temporarily Unavailable');
         OC_Template::printErrorPage($l->t('Sample configuration detected'), $l->t('It has been detected that the sample configuration has been copied. This can break your installation and is unsupported. Please read the documentation before performing changes on config.php'));
         return;
     }
     $request = \OC::$server->getRequest();
     $host = $request->getInsecureServerHost();
     /**
      * if the host passed in headers isn't trusted
      * FIXME: Should not be in here at all :see_no_evil:
      */
     if (!OC::$CLI && self::$server->getConfig()->getSystemValue('overwritehost') === '' && !\OC::$server->getTrustedDomainHelper()->isTrustedDomain($host) && self::$server->getConfig()->getSystemValue('installed', false)) {
         header('HTTP/1.1 400 Bad Request');
         header('Status: 400 Bad Request');
         \OC::$server->getLogger()->warning('Trusted domain error. "{remoteAddress}" tried to access using "{host}" as host.', ['app' => 'core', 'remoteAddress' => $request->getRemoteAddress(), 'host' => $host]);
         $tmpl = new OCP\Template('core', 'untrustedDomain', 'guest');
         $tmpl->assign('domain', $host);
         $tmpl->printPage();
         exit;
     }
     \OC::$server->getEventLogger()->end('boot');
 }

 /**
  * @PublicPage
  * @NoCSRFRequired
  *
  * @param string $token
  * @param string $files
  * @param string $path
  * @param string $downloadStartSecret
  * @return void|RedirectResponse
  */
 public function downloadShare($token, $files = null, $path = '', $downloadStartSecret = '')
 {
     \OC_User::setIncognitoMode(true);
     $share = $this->shareManager->getShareByToken($token);
     // Share is password protected - check whether the user is permitted to access the share
     if ($share->getPassword() !== null && !$this->linkShareAuth($share)) {
         return new RedirectResponse($this->urlGenerator->linkToRoute('files_sharing.sharecontroller.authenticate', ['token' => $token]));
     }
     $files_list = null;
     if (!is_null($files)) {
         // download selected files
         $files_list = json_decode($files);
         // in case we get only a single file
         if ($files_list === null) {
             $files_list = [$files];
         }
     }
     $userFolder = $this->rootFolder->getUserFolder($share->getShareOwner()->getUID());
     $originalSharePath = $userFolder->getRelativePath($share->getNode()->getPath());
     // Single file share
     if ($share->getNode() instanceof \OCP\Files\File) {
         // Single file download
         $event = $this->activityManager->generateEvent();
         $event->setApp('files_sharing')->setType(Activity::TYPE_PUBLIC_LINKS)->setSubject(Activity::SUBJECT_PUBLIC_SHARED_FILE_DOWNLOADED, [$userFolder->getRelativePath($share->getNode()->getPath())])->setAffectedUser($share->getShareOwner()->getUID())->setObject('files', $share->getNode()->getId(), $userFolder->getRelativePath($share->getNode()->getPath()));
         $this->activityManager->publish($event);
     } else {
         /** @var \OCP\Files\Folder $node */
         $node = $share->getNode();
         // Try to get the path
         if ($path !== '') {
             try {
                 $node = $node->get($path);
             } catch (NotFoundException $e) {
                 return new NotFoundResponse();
             }
         }
         $originalSharePath = $userFolder->getRelativePath($node->getPath());
         if ($node instanceof \OCP\Files\File) {
             // Single file download
             $event = $this->activityManager->generateEvent();
             $event->setApp('files_sharing')->setType(Activity::TYPE_PUBLIC_LINKS)->setSubject(Activity::SUBJECT_PUBLIC_SHARED_FILE_DOWNLOADED, [$userFolder->getRelativePath($node->getPath())])->setAffectedUser($share->getShareOwner()->getUID())->setObject('files', $node->getId(), $userFolder->getRelativePath($node->getPath()));
             $this->activityManager->publish($event);
         } else {
             if (!empty($files_list)) {
                 /** @var \OCP\Files\Folder $node */
                 // Subset of files is downloaded
                 foreach ($files_list as $file) {
                     $subNode = $node->get($file);
                     $event = $this->activityManager->generateEvent();
                     $event->setApp('files_sharing')->setType(Activity::TYPE_PUBLIC_LINKS)->setAffectedUser($share->getShareOwner()->getUID())->setObject('files', $subNode->getId(), $userFolder->getRelativePath($subNode->getPath()));
                     if ($subNode instanceof \OCP\Files\File) {
                         $event->setSubject(Activity::SUBJECT_PUBLIC_SHARED_FILE_DOWNLOADED, [$userFolder->getRelativePath($subNode->getPath())]);
                     } else {
                         $event->setSubject(Activity::SUBJECT_PUBLIC_SHARED_FOLDER_DOWNLOADED, [$userFolder->getRelativePath($subNode->getPath())]);
                     }
                     $this->activityManager->publish($event);
                 }
             } else {
                 // The folder is downloaded
                 $event = $this->activityManager->generateEvent();
                 $event->setApp('files_sharing')->setType(Activity::TYPE_PUBLIC_LINKS)->setSubject(Activity::SUBJECT_PUBLIC_SHARED_FOLDER_DOWNLOADED, [$userFolder->getRelativePath($node->getPath())])->setAffectedUser($share->getShareOwner()->getUID())->setObject('files', $node->getId(), $userFolder->getRelativePath($node->getPath()));
                 $this->activityManager->publish($event);
             }
         }
     }
     /* FIXME: We should do this all nicely in OCP */
     OC_Util::tearDownFS();
     OC_Util::setupFS($share->getShareOwner()->getUID());
     /**
      * this sets a cookie to be able to recognize the start of the download
      * the content must not be longer than 32 characters and must only contain
      * alphanumeric characters
      */
     if (!empty($downloadStartSecret) && !isset($downloadStartSecret[32]) && preg_match('!^[a-zA-Z0-9]+$!', $downloadStartSecret) === 1) {
         // FIXME: set on the response once we use an actual app framework response
         setcookie('ocDownloadStarted', $downloadStartSecret, time() + 20, '/');
     }
     // download selected files
     if (!is_null($files)) {
         // FIXME: The exit is required here because otherwise the AppFramework is trying to add headers as well
         // after dispatching the request which results in a "Cannot modify header information" notice.
         OC_Files::get($originalSharePath, $files_list, $_SERVER['REQUEST_METHOD'] == 'HEAD');
         exit;
     } else {
         // FIXME: The exit is required here because otherwise the AppFramework is trying to add headers as well
         // after dispatching the request which results in a "Cannot modify header information" notice.
         OC_Files::get(dirname($originalSharePath), basename($originalSharePath), $_SERVER['REQUEST_METHOD'] == 'HEAD');
         exit;
     }
 }

 /**
  * Validates a token to make sure its linked to a valid resource
  *
  * Uses Share 2.0
  *
  * @fixme setIncognitoMode in 8.1 https://github.com/owncloud/core/pull/12912
  *
  * @param string $token
  *
  * @throws CheckException
  * @return IShare
  */
 private function getShare($token)
 {
     // Allows a logged in user to access public links
     \OC_User::setIncognitoMode(true);
     try {
         $share = $this->shareManager->getShareByToken($token);
     } catch (ShareNotFound $e) {
         throw new CheckException($e->getMessage(), Http::STATUS_NOT_FOUND);
     }
     $this->checkShareIsValid($share, $token);
     $this->checkItemType($share);
     return $share;
 }

 /**
  * Validates a token to make sure its linked to a valid resource
  *
  * Logic mostly duplicated from @see \OCA\Files_Sharing\Helper
  *
  * @fixme setIncognitoMode in 8.1 https://github.com/owncloud/core/pull/12912
  *
  * @param string $token
  *
  * @return array
  *
  * @throws CheckException
  */
 private function getLinkItem($token)
 {
     // Allows a logged in user to access public links
     \OC_User::setIncognitoMode(true);
     $linkItem = Share::getShareByToken($token, false);
     $this->checkLinkItemExists($linkItem);
     $this->checkLinkItemIsValid($linkItem, $token);
     $this->checkItemType($linkItem);
     // Checks passed, let's store the linkItem
     return $linkItem;
 }