nextcloud/apps/files/lib/Command/Scan.php

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<?php
/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
*
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* @author Bart Visscher <bartv@thisnet.nl>
* @author Jörn Friedrich Dreyer <jfd@butonic.de>
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* @author martin.mattel@diemattels.at <martin.mattel@diemattels.at>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Robin Appelman <robin@icewind.nl>
* @author Thomas Müller <thomas.mueller@tmit.eu>
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* @author Vincent Petry <pvince81@owncloud.com>
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*
* @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 OCA\Files\Command;
use Doctrine\DBAL\Connection;
use OC\Core\Command\Base;
use OC\Core\Command\InterruptedException;
use OC\ForbiddenException;
use OCP\Files\NotFoundException;
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use OCP\Files\StorageNotAvailableException;
use OCP\IDBConnection;
use OCP\IUserManager;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;
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use Symfony\Component\Console\Helper\Table;
class Scan extends Base {
/** @var IUserManager $userManager */
private $userManager;
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/** @var float */
protected $execTime = 0;
/** @var int */
protected $foldersCounter = 0;
/** @var int */
protected $filesCounter = 0;
public function __construct(IUserManager $userManager) {
$this->userManager = $userManager;
parent::__construct();
}
protected function configure() {
parent::configure();
$this
->setName('files:scan')
->setDescription('rescan filesystem')
->addArgument(
'user_id',
InputArgument::OPTIONAL | InputArgument::IS_ARRAY,
'will rescan all files of the given user(s)'
)
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->addOption(
'path',
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'p',
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InputArgument::OPTIONAL,
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'limit rescan to this path, eg. --path="/alice/files/Music", the user_id is determined by the path and the user_id parameter and --all are ignored'
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)
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->addOption(
'quiet',
'q',
InputOption::VALUE_NONE,
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'suppress any output'
)
->addOption(
'verbose',
'-v|vv|vvv',
InputOption::VALUE_NONE,
'verbose the output'
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)
->addOption(
'all',
null,
InputOption::VALUE_NONE,
'will rescan all files of all known users'
)->addOption(
'unscanned',
null,
InputOption::VALUE_NONE,
'only scan files which are marked as not fully scanned'
)->addOption(
'shallow',
null,
InputOption::VALUE_NONE,
'do not scan folders recursively'
);
}
public function checkScanWarning($fullPath, OutputInterface $output) {
$normalizedPath = basename(\OC\Files\Filesystem::normalizePath($fullPath));
$path = basename($fullPath);
if ($normalizedPath !== $path) {
$output->writeln("\t<error>Entry \"" . $fullPath . '" will not be accessible due to incompatible encoding</error>');
}
}
protected function scanFiles($user, $path, $verbose, OutputInterface $output, $backgroundScan = false, $recursive = true) {
$connection = $this->reconnectToDatabase($output);
$scanner = new \OC\Files\Utils\Scanner($user, $connection, \OC::$server->getLogger());
# check on each file/folder if there was a user interrupt (ctrl-c) and throw an exception
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# printout and count
if ($verbose) {
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$scanner->listen('\OC\Files\Utils\Scanner', 'scanFile', function ($path) use ($output) {
$output->writeln("\tFile <info>$path</info>");
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$this->filesCounter += 1;
if ($this->hasBeenInterrupted()) {
throw new InterruptedException();
}
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});
$scanner->listen('\OC\Files\Utils\Scanner', 'scanFolder', function ($path) use ($output) {
$output->writeln("\tFolder <info>$path</info>");
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$this->foldersCounter += 1;
if ($this->hasBeenInterrupted()) {
throw new InterruptedException();
}
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});
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$scanner->listen('\OC\Files\Utils\Scanner', 'StorageNotAvailable', function (StorageNotAvailableException $e) use ($output) {
$output->writeln("Error while scanning, storage not available (" . $e->getMessage() . ")");
});
# count only
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} else {
$scanner->listen('\OC\Files\Utils\Scanner', 'scanFile', function () use ($output) {
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$this->filesCounter += 1;
if ($this->hasBeenInterrupted()) {
throw new InterruptedException();
}
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});
$scanner->listen('\OC\Files\Utils\Scanner', 'scanFolder', function () use ($output) {
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$this->foldersCounter += 1;
if ($this->hasBeenInterrupted()) {
throw new InterruptedException();
}
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});
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}
$scanner->listen('\OC\Files\Utils\Scanner', 'scanFile', function ($path) use ($output) {
$this->checkScanWarning($path, $output);
});
$scanner->listen('\OC\Files\Utils\Scanner', 'scanFolder', function ($path) use ($output) {
$this->checkScanWarning($path, $output);
});
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try {
if ($backgroundScan) {
$scanner->backgroundScan($path);
} else {
$scanner->scan($path, $recursive);
}
} catch (ForbiddenException $e) {
$output->writeln("<error>Home storage for user $user not writable</error>");
$output->writeln("Make sure you're running the scan command only as the user the web server runs as");
} catch (InterruptedException $e) {
# exit the function if ctrl-c has been pressed
$output->writeln('Interrupted by user');
} catch (NotFoundException $e) {
$output->writeln('<error>Path not found: ' . $e->getMessage() . '</error>');
} catch (\Exception $e) {
$output->writeln('<error>Exception during scan: ' . $e->getMessage() . '</error>');
$output->writeln('<error>' . $e->getTraceAsString() . '</error>');
}
}
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protected function execute(InputInterface $input, OutputInterface $output) {
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$inputPath = $input->getOption('path');
if ($inputPath) {
$inputPath = '/' . trim($inputPath, '/');
list (, $user,) = explode('/', $inputPath, 3);
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$users = array($user);
} else if ($input->getOption('all')) {
$users = $this->userManager->search('');
} else {
$users = $input->getArgument('user_id');
}
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# no messaging level option means: no full printout but statistics
# $quiet means no print at all
# $verbose means full printout including statistics
# -q -v full stat
# 0 0 no yes
# 0 1 yes yes
# 1 -- no no (quiet overrules verbose)
$verbose = $input->getOption('verbose');
$quiet = $input->getOption('quiet');
# restrict the verbosity level to VERBOSITY_VERBOSE
if ($output->getVerbosity() > OutputInterface::VERBOSITY_VERBOSE) {
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$output->setVerbosity(OutputInterface::VERBOSITY_VERBOSE);
}
if ($quiet) {
$verbose = false;
}
# check quantity of users to be process and show it on the command line
$users_total = count($users);
if ($users_total === 0) {
$output->writeln("<error>Please specify the user id to scan, \"--all\" to scan for all users or \"--path=...\"</error>");
return;
} else {
if ($users_total > 1) {
$output->writeln("\nScanning files for $users_total users");
}
}
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$this->initTools();
$user_count = 0;
foreach ($users as $user) {
if (is_object($user)) {
$user = $user->getUID();
}
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$path = $inputPath ? $inputPath : '/' . $user;
$user_count += 1;
if ($this->userManager->userExists($user)) {
# add an extra line when verbose is set to optical separate users
if ($verbose) {
$output->writeln("");
}
$output->writeln("Starting scan for user $user_count out of $users_total ($user)");
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# full: printout data if $verbose was set
$this->scanFiles($user, $path, $verbose, $output, $input->getOption('unscanned'), ! $input->getOption('shallow'));
} else {
$output->writeln("<error>Unknown user $user_count $user</error>");
}
# check on each user if there was a user interrupt (ctrl-c) and exit foreach
if ($this->hasBeenInterrupted()) {
break;
}
}
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# stat: printout statistics if $quiet was not set
if (!$quiet) {
$this->presentStats($output);
}
}
/**
* Initialises some useful tools for the Command
*/
protected function initTools() {
// Start the timer
$this->execTime = -microtime(true);
// Convert PHP errors to exceptions
set_error_handler([$this, 'exceptionErrorHandler'], E_ALL);
}
/**
* Processes PHP errors as exceptions in order to be able to keep track of problems
*
* @see https://secure.php.net/manual/en/function.set-error-handler.php
*
* @param int $severity the level of the error raised
* @param string $message
* @param string $file the filename that the error was raised in
* @param int $line the line number the error was raised
*
* @throws \ErrorException
*/
public function exceptionErrorHandler($severity, $message, $file, $line) {
if (!(error_reporting() & $severity)) {
// This error code is not included in error_reporting
return;
}
throw new \ErrorException($message, 0, $severity, $file, $line);
}
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/**
* @param OutputInterface $output
*/
protected function presentStats(OutputInterface $output) {
// Stop the timer
$this->execTime += microtime(true);
$output->writeln("");
$headers = [
'Folders', 'Files', 'Elapsed time'
];
$this->showSummary($headers, null, $output);
}
/**
* Shows a summary of operations
*
* @param string[] $headers
* @param string[] $rows
* @param OutputInterface $output
*/
protected function showSummary($headers, $rows, OutputInterface $output) {
$niceDate = $this->formatExecTime();
if (!$rows) {
$rows = [
$this->foldersCounter,
$this->filesCounter,
$niceDate,
];
}
$table = new Table($output);
$table
->setHeaders($headers)
->setRows([$rows]);
$table->render();
}
/**
* Formats microtime into a human readable format
*
* @return string
*/
protected function formatExecTime() {
list($secs, ) = explode('.', sprintf("%.1f", $this->execTime));
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# if you want to have microseconds add this: . '.' . $tens;
return date('H:i:s', $secs);
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}
/**
* @return \OCP\IDBConnection
*/
protected function reconnectToDatabase(OutputInterface $output) {
/** @var Connection | IDBConnection $connection */
$connection = \OC::$server->getDatabaseConnection();
try {
$connection->close();
} catch (\Exception $ex) {
$output->writeln("<info>Error while disconnecting from database: {$ex->getMessage()}</info>");
}
while (!$connection->isConnected()) {
try {
$connection->connect();
} catch (\Exception $ex) {
$output->writeln("<info>Error while re-connecting to database: {$ex->getMessage()}</info>");
sleep(60);
}
}
return $connection;
}
}