141 lines
3.9 KiB
PHP
141 lines
3.9 KiB
PHP
<?php
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/**
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* Copyright (c) 2013 Robin Appelman <icewind@owncloud.com>
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* This file is licensed under the Affero General Public License version 3 or
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* later.
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* See the COPYING-README file.
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*/
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namespace OC\Files\Utils;
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use OC\Files\View;
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use OC\Files\Cache\ChangePropagator;
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use OC\Files\Filesystem;
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use OC\ForbiddenException;
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use OC\Hooks\PublicEmitter;
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/**
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* Class Scanner
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*
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* Hooks available in scope \OC\Utils\Scanner
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* - scanFile(string $absolutePath)
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* - scanFolder(string $absolutePath)
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*
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* @package OC\Files\Utils
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*/
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class Scanner extends PublicEmitter {
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/**
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* @var string $user
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*/
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private $user;
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/**
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* @var \OC\Files\Cache\ChangePropagator
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*/
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protected $propagator;
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/**
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* @var \OCP\IDBConnection
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*/
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protected $db;
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/**
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* @param string $user
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* @param \OCP\IDBConnection $db
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*/
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public function __construct($user, $db) {
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$this->user = $user;
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$this->propagator = new ChangePropagator(new View(''));
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$this->db = $db;
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}
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/**
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* get all storages for $dir
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*
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* @param string $dir
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* @return \OC\Files\Mount\MountPoint[]
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*/
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protected function getMounts($dir) {
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//TODO: move to the node based fileapi once that's done
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\OC_Util::tearDownFS();
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\OC_Util::setupFS($this->user);
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$absolutePath = Filesystem::getView()->getAbsolutePath($dir);
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$mountManager = Filesystem::getMountManager();
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$mounts = $mountManager->findIn($absolutePath);
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$mounts[] = $mountManager->find($absolutePath);
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$mounts = array_reverse($mounts); //start with the mount of $dir
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return $mounts;
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}
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/**
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* attach listeners to the scanner
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*
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* @param \OC\Files\Mount\MountPoint $mount
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*/
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protected function attachListener($mount) {
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$scanner = $mount->getStorage()->getScanner();
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$emitter = $this;
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$scanner->listen('\OC\Files\Cache\Scanner', 'scanFile', function ($path) use ($mount, $emitter) {
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$emitter->emit('\OC\Files\Utils\Scanner', 'scanFile', array($mount->getMountPoint() . $path));
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});
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$scanner->listen('\OC\Files\Cache\Scanner', 'scanFolder', function ($path) use ($mount, $emitter) {
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$emitter->emit('\OC\Files\Utils\Scanner', 'scanFolder', array($mount->getMountPoint() . $path));
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});
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// propagate etag and mtimes when files are changed or removed
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$propagator = $this->propagator;
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$propagatorListener = function ($path) use ($mount, $propagator) {
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$fullPath = Filesystem::normalizePath($mount->getMountPoint() . $path);
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$propagator->addChange($fullPath);
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};
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$scanner->listen('\OC\Files\Cache\Scanner', 'addToCache', $propagatorListener);
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$scanner->listen('\OC\Files\Cache\Scanner', 'removeFromCache', $propagatorListener);
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}
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/**
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* @param string $dir
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*/
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public function backgroundScan($dir) {
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$mounts = $this->getMounts($dir);
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foreach ($mounts as $mount) {
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if (is_null($mount->getStorage())) {
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continue;
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}
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$scanner = $mount->getStorage()->getScanner();
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$this->attachListener($mount);
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$scanner->backgroundScan();
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}
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$this->propagator->propagateChanges(time());
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}
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/**
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* @param string $dir
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* @throws \OC\ForbiddenException
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*/
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public function scan($dir = '') {
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$mounts = $this->getMounts($dir);
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foreach ($mounts as $mount) {
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if (is_null($mount->getStorage())) {
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continue;
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}
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$storage = $mount->getStorage();
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// if the home storage isn't writable then the scanner is run as the wrong user
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if ($storage->instanceOfStorage('\OC\Files\Storage\Home') and
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(!$storage->isCreatable('') or !$storage->isCreatable('files'))
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) {
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throw new ForbiddenException();
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}
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$relativePath = $mount->getInternalPath($dir);
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$scanner = $storage->getScanner();
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$scanner->setUseTransactions(false);
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$this->attachListener($mount);
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$this->db->beginTransaction();
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$scanner->scan($relativePath, \OC\Files\Cache\Scanner::SCAN_RECURSIVE, \OC\Files\Cache\Scanner::REUSE_ETAG | \OC\Files\Cache\Scanner::REUSE_SIZE);
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$this->db->commit();
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}
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$this->propagator->propagateChanges(time());
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}
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}
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