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<?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 fetches legacy course files in dataroot directory, it is enabled
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* only if course->legacyfiles == 2. DO not link to this file in new code.
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*
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* Syntax: file.php/courseid/dir/dir/dir/filename.ext
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* file.php/courseid/dir/dir/dir/filename.ext?forcedownload=1 (download instead of inline)
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* file.php/courseid/dir (returns index.html from dir)
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* Workaround: file.php?file=/courseid/dir/dir/dir/filename.ext
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*
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* @package core
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* @subpackage file
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* @copyright 1999 onwards Martin Dougiamas (http://dougiamas.com)
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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 '/', because of backup/restore!!!
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if (!$relativepath) {
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throw new \moodle_exception('invalidargorconf');
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} else if ($relativepath[0] != '/') {
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throw new \moodle_exception('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($args) == 0) { // always at least courseid, may search for index.html in course root
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throw new \moodle_exception('invalidarguments');
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}
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$courseid = (int)array_shift($args);
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$relativepath = implode('/', $args);
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// security: limit access to existing course subdirectories
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$course = $DB->get_record('course', array('id'=>$courseid), '*', MUST_EXIST);
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if ($course->legacyfiles != 2) {
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// course files disabled
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send_file_not_found();
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}
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if ($course->id != SITEID) {
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require_login($course, true, null, false);
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} else if ($CFG->forcelogin) {
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if (empty($CFG->sitepolicyhandler) and !empty($CFG->sitepolicy)
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and ($CFG->sitepolicy == $CFG->wwwroot.'/file.php/'.$relativepath
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or $CFG->sitepolicy == $CFG->wwwroot.'/file.php?file=/'.$relativepath)) {
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//do not require login for policy file
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} else {
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require_login(0, true, null, false);
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}
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}
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$context = context_course::instance($course->id);
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$fs = get_file_storage();
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$fullpath = "/$context->id/course/legacy/0/$relativepath";
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if (!$file = $fs->get_file_by_hash(sha1($fullpath))) {
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if (strrpos($fullpath, '/') !== strlen($fullpath) -1 ) {
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$fullpath .= '/';
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}
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// Try to fallback to the directory named as the supposed file.
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if (!$file = $fs->get_file_by_hash(sha1($fullpath.'.'))) {
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send_file_not_found();
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}
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}
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// do not serve dirs
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if ($file->get_filename() == '.') {
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if (!$file = $fs->get_file_by_hash(sha1($fullpath.'index.html'))) {
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if (!$file = $fs->get_file_by_hash(sha1($fullpath.'index.htm'))) {
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if (!$file = $fs->get_file_by_hash(sha1($fullpath.'Default.htm'))) {
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send_file_not_found();
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}
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}
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}
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}
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// ========================================
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// finally send the file
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// ========================================
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\core\session\manager::write_close(); // Unlock session during file serving.
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send_stored_file($file, null, $CFG->filteruploadedfiles, $forcedownload);
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