1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
<?php
/**
* Copyright (c) 2013 Robin Appelman <icewind@owncloud.com>
* This file is licensed under the Affero General Public License version 3 or
* later.
* See the COPYING-README file.
*/
namespace OC\Files\Utils;
use OC\Files\View;
use OC\Files\Cache\ChangePropagator;
use OC\Files\Filesystem;
use OC\ForbiddenException;
use OC\Hooks\PublicEmitter;
/**
* Class Scanner
*
* Hooks available in scope \OC\Utils\Scanner
* - scanFile(string $absolutePath)
* - scanFolder(string $absolutePath)
*
* @package OC\Files\Utils
*/
class Scanner extends PublicEmitter {
/**
* @var string $user
*/
private $user;
/**
* @var \OC\Files\Cache\ChangePropagator
*/
protected $propagator;
/**
* @var \OCP\IDBConnection
*/
protected $db;
/**
* @param string $user
* @param \OCP\IDBConnection $db
*/
public function __construct($user, $db) {
$this->user = $user;
$this->propagator = new ChangePropagator(new View(''));
$this->db = $db;
}
/**
* get all storages for $dir
*
* @param string $dir
* @return \OC\Files\Mount\MountPoint[]
*/
protected function getMounts($dir) {
//TODO: move to the node based fileapi once that's done
\OC_Util::tearDownFS();
\OC_Util::setupFS($this->user);
$absolutePath = Filesystem::getView()->getAbsolutePath($dir);
$mountManager = Filesystem::getMountManager();
$mounts = $mountManager->findIn($absolutePath);
$mounts[] = $mountManager->find($absolutePath);
$mounts = array_reverse($mounts); //start with the mount of $dir
return $mounts;
}
/**
* attach listeners to the scanner
*
* @param \OC\Files\Mount\MountPoint $mount
*/
protected function attachListener($mount) {
$scanner = $mount->getStorage()->getScanner();
$emitter = $this;
$scanner->listen('\OC\Files\Cache\Scanner', 'scanFile', function ($path) use ($mount, $emitter) {
$emitter->emit('\OC\Files\Utils\Scanner', 'scanFile', array($mount->getMountPoint() . $path));
});
$scanner->listen('\OC\Files\Cache\Scanner', 'scanFolder', function ($path) use ($mount, $emitter) {
$emitter->emit('\OC\Files\Utils\Scanner', 'scanFolder', array($mount->getMountPoint() . $path));
});
// propagate etag and mtimes when files are changed or removed
$propagator = $this->propagator;
$propagatorListener = function ($path) use ($mount, $propagator) {
$fullPath = Filesystem::normalizePath($mount->getMountPoint() . $path);
$propagator->addChange($fullPath);
};
$scanner->listen('\OC\Files\Cache\Scanner', 'addToCache', $propagatorListener);
$scanner->listen('\OC\Files\Cache\Scanner', 'removeFromCache', $propagatorListener);
}
/**
* @param string $dir
*/
public function backgroundScan($dir) {
$mounts = $this->getMounts($dir);
foreach ($mounts as $mount) {
if (is_null($mount->getStorage())) {
continue;
}
$scanner = $mount->getStorage()->getScanner();
$this->attachListener($mount);
$scanner->backgroundScan();
}
$this->propagator->propagateChanges(time());
}
/**
* @param string $dir
* @throws \OC\ForbiddenException
*/
public function scan($dir = '') {
if (!Filesystem::isValidPath($dir)) {
throw new \InvalidArgumentException('Invalid path to scan');
}
$mounts = $this->getMounts($dir);
foreach ($mounts as $mount) {
if (is_null($mount->getStorage())) {
continue;
}
$storage = $mount->getStorage();
// if the home storage isn't writable then the scanner is run as the wrong user
if ($storage->instanceOfStorage('\OC\Files\Storage\Home') and
(!$storage->isCreatable('') or !$storage->isCreatable('files'))
) {
throw new ForbiddenException();
}
$relativePath = $mount->getInternalPath($dir);
$scanner = $storage->getScanner();
$scanner->setUseTransactions(false);
$this->attachListener($mount);
$this->db->beginTransaction();
$scanner->scan($relativePath, \OC\Files\Cache\Scanner::SCAN_RECURSIVE, \OC\Files\Cache\Scanner::REUSE_ETAG | \OC\Files\Cache\Scanner::REUSE_SIZE);
$this->db->commit();
}
$this->propagator->propagateChanges(time());
}
}
|
