1 |
efrain |
1 |
<?php
|
|
|
2 |
|
|
|
3 |
// This file is part of Moodle - http://moodle.org/
|
|
|
4 |
//
|
|
|
5 |
// Moodle is free software: you can redistribute it and/or modify
|
|
|
6 |
// it under the terms of the GNU General Public License as published by
|
|
|
7 |
// the Free Software Foundation, either version 3 of the License, or
|
|
|
8 |
// (at your option) any later version.
|
|
|
9 |
//
|
|
|
10 |
// Moodle is distributed in the hope that it will be useful,
|
|
|
11 |
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
12 |
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
13 |
// GNU General Public License for more details.
|
|
|
14 |
//
|
|
|
15 |
// You should have received a copy of the GNU General Public License
|
|
|
16 |
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
|
|
|
17 |
|
|
|
18 |
/**
|
|
|
19 |
* @package moodlecore
|
|
|
20 |
* @subpackage backup-helper
|
|
|
21 |
* @copyright 2010 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
|
|
|
22 |
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
|
|
|
23 |
*/
|
|
|
24 |
|
|
|
25 |
/**
|
|
|
26 |
* Collection of helper functions to handle files
|
|
|
27 |
*
|
|
|
28 |
* This class implements various functions related with moodle storage
|
|
|
29 |
* handling (get file from storage, put it there...) and some others
|
|
|
30 |
* to use the zip/unzip facilities.
|
|
|
31 |
*
|
|
|
32 |
* Note: It's supposed that, some day, files implementation will offer
|
|
|
33 |
* those functions without needeing to know storage internals at all.
|
|
|
34 |
* That day, we'll move related functions here to proper file api ones.
|
|
|
35 |
*
|
|
|
36 |
* TODO: Finish phpdocs
|
|
|
37 |
*/
|
|
|
38 |
class backup_file_manager {
|
|
|
39 |
|
|
|
40 |
/**
|
|
|
41 |
* Returns the full path to backup storage base dir
|
|
|
42 |
*/
|
|
|
43 |
public static function get_backup_storage_base_dir($backupid) {
|
|
|
44 |
global $CFG;
|
|
|
45 |
|
|
|
46 |
$backupiddir = make_backup_temp_directory($backupid);
|
|
|
47 |
return $backupiddir . '/files';
|
|
|
48 |
}
|
|
|
49 |
|
|
|
50 |
/**
|
|
|
51 |
* Given one file content hash, returns the path (relative to filedir)
|
|
|
52 |
* to the file.
|
|
|
53 |
*/
|
|
|
54 |
public static function get_backup_content_file_location($contenthash) {
|
|
|
55 |
$l1 = $contenthash[0].$contenthash[1];
|
|
|
56 |
return "$l1/$contenthash";
|
|
|
57 |
}
|
|
|
58 |
|
|
|
59 |
/**
|
|
|
60 |
* Copy one file from moodle storage to backup storage
|
|
|
61 |
*/
|
|
|
62 |
public static function copy_file_moodle2backup($backupid, $filerecorid) {
|
|
|
63 |
global $DB;
|
|
|
64 |
|
|
|
65 |
if (!backup_controller_dbops::backup_includes_files($backupid)) {
|
|
|
66 |
// Only include the files if required by the controller.
|
|
|
67 |
return;
|
|
|
68 |
}
|
|
|
69 |
|
|
|
70 |
// Normalise param
|
|
|
71 |
if (!is_object($filerecorid)) {
|
|
|
72 |
$filerecorid = $DB->get_record('files', array('id' => $filerecorid));
|
|
|
73 |
}
|
|
|
74 |
|
|
|
75 |
// Directory, nothing to do
|
|
|
76 |
if ($filerecorid->filename === '.') {
|
|
|
77 |
return;
|
|
|
78 |
}
|
|
|
79 |
|
|
|
80 |
$fs = get_file_storage();
|
|
|
81 |
$file = $fs->get_file_instance($filerecorid);
|
|
|
82 |
// If the file is external file, skip copying.
|
|
|
83 |
if ($file->is_external_file()) {
|
|
|
84 |
return;
|
|
|
85 |
}
|
|
|
86 |
|
|
|
87 |
// Calculate source and target paths (use same subdirs strategy for both)
|
|
|
88 |
$targetfilepath = self::get_backup_storage_base_dir($backupid) . '/' .
|
|
|
89 |
self::get_backup_content_file_location($filerecorid->contenthash);
|
|
|
90 |
|
|
|
91 |
// Create target dir if necessary
|
|
|
92 |
if (!file_exists(dirname($targetfilepath))) {
|
|
|
93 |
if (!check_dir_exists(dirname($targetfilepath), true, true)) {
|
|
|
94 |
throw new backup_helper_exception('cannot_create_directory', dirname($targetfilepath));
|
|
|
95 |
}
|
|
|
96 |
}
|
|
|
97 |
|
|
|
98 |
// And copy the file (if doesn't exist already)
|
|
|
99 |
if (!file_exists($targetfilepath)) {
|
|
|
100 |
$file->copy_content_to($targetfilepath);
|
|
|
101 |
}
|
|
|
102 |
}
|
|
|
103 |
}
|