mirror of
https://github.com/moodle/moodle.git
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124 lines
3.5 KiB
PHP
124 lines
3.5 KiB
PHP
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* This script serves user's private files
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*
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* @package moodlecore
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* @subpackage file
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* @copyright 2008 Petr Skoda (http://skodak.org)
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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// disable moodle specific debug messages and any errors in output
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define('NO_DEBUG_DISPLAY', true);
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require_once('config.php');
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require_once('lib/filelib.php');
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$relativepath = get_file_argument();
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$forcedownload = optional_param('forcedownload', 0, PARAM_BOOL);
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// relative path must start with '/'
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if (!$relativepath) {
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print_error('invalidargorconf');
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} else if ($relativepath{0} != '/') {
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print_error('pathdoesnotstartslash');
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}
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// extract relative path components
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$args = explode('/', ltrim($relativepath, '/'));
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if (count($args) == 0) { // always at least user id
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print_error('invalidarguments');
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}
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$contextid = (int)array_shift($args);
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$filearea = array_shift($args);
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$context = get_context_instance_by_id($contextid);
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if ($context->contextlevel != CONTEXT_USER) {
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print_error('invalidarguments');
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}
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$userid = $context->instanceid;
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switch ($filearea) {
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case 'user_profile':
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require_login();
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if (isguestuser()) {
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print_error('noguest');
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}
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// access controll here must match user edit forms
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if ($userid == $USER->id) {
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if (!has_capability('moodle/user:editownprofile', get_context_instance(CONTEXT_SYSTEM))) {
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send_file_not_found();
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}
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} else {
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if (!has_capability('moodle/user:editprofile', $context) and !has_capability('moodle/user:update', $context)) {
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send_file_not_found();
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}
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}
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$itemid = 0;
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$forcedownload = true;
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break;
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case 'user_private':
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require_login();
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if (isguestuser()) {
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send_file_not_found();
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}
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if ($USER->id != $userid) {
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send_file_not_found();
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}
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$itemid = 0;
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$forcedownload = true;
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break;
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case 'user_backup':
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require_login();
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if (isguestuser()) {
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send_file_not_found();
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}
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if ($USER->id != $userid) {
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send_file_not_found();
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}
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$itemid = (int)array_shift($args);
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$forcedownload = true;
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break;
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default:
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send_file_not_found();
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}
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$relativepath = '/'.implode('/', $args);
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$fs = get_file_storage();
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$fullpath = $context->id.$filearea.$itemid.$relativepath;
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if (!$file = $fs->get_file_by_hash(sha1($fullpath)) or $file->get_filename() == '.') {
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send_file_not_found();
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}
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// ========================================
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// finally send the file
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// ========================================
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session_get_instance()->write_close(); // unlock session during fileserving
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send_stored_file($file, 0, false, $forcedownload);
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