MDL-40266 improve emulate_bound_params() for mysqli
[moodle.git] / draftfile.php
CommitLineData
d92e7c4d 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/**
19a2b80f 19 * This script serves draft files of current user
d92e7c4d 20 *
64f93798 21 * @package core
d92e7c4d 22 * @subpackage file
23 * @copyright 2008 Petr Skoda (http://skodak.org)
24 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
25 */
26
2e9b772f
PS
27// disable moodle specific debug messages and any errors in output
28define('NO_DEBUG_DISPLAY', true);
29
d92e7c4d 30require_once('config.php');
31require_once('lib/filelib.php');
32
33require_login();
34if (isguestuser()) {
35 print_error('noguest');
36}
37
d92e7c4d 38$relativepath = get_file_argument();
9d197772 39$preview = optional_param('preview', null, PARAM_ALPHANUM);
d92e7c4d 40
41// relative path must start with '/'
42if (!$relativepath) {
43 print_error('invalidargorconf');
44} else if ($relativepath{0} != '/') {
45 print_error('pathdoesnotstartslash');
46}
47
48// extract relative path components
49$args = explode('/', ltrim($relativepath, '/'));
50
51if (count($args) == 0) { // always at least user id
52 print_error('invalidarguments');
53}
54
55$contextid = (int)array_shift($args);
64f93798
PS
56$component = array_shift($args);
57$filearea = array_shift($args);
58$draftid = (int)array_shift($args);
59
60if ($component !== 'user' or $filearea !== 'draft') {
61 send_file_not_found();
62}
d92e7c4d 63
64$context = get_context_instance_by_id($contextid);
65if ($context->contextlevel != CONTEXT_USER) {
64f93798 66 send_file_not_found();
d92e7c4d 67}
68
69$userid = $context->instanceid;
70if ($USER->id != $userid) {
71 print_error('invaliduserid');
72}
73
4149edbd 74
d92e7c4d 75$fs = get_file_storage();
7070268e 76
64f93798
PS
77$relativepath = implode('/', $args);
78$fullpath = "/$context->id/user/draft/$draftid/$relativepath";
7070268e 79
d92e7c4d 80if (!$file = $fs->get_file_by_hash(sha1($fullpath)) or $file->get_filename() == '.') {
81 send_file_not_found();
82}
7070268e 83
d92e7c4d 84// ========================================
85// finally send the file
86// ========================================
87session_get_instance()->write_close(); // unlock session during fileserving
9d197772 88send_stored_file($file, 0, false, true, array('preview' => $preview)); // force download - security first!