Proyectos de Subversion Moodle

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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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 * Standard plugin entry points of the HTML question export format.
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 *
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 * @package   qformat_xhtml
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 * @copyright 2013 The Open University
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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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defined('MOODLE_INTERNAL') || die();
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/**
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 * Serve question files when they are displayed in this export format.
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 *
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 * @param context $previewcontext the quiz context
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 * @param int $questionid the question id.
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 * @param context $filecontext the file (question) context
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 * @param string $filecomponent the component the file belongs to.
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 * @param string $filearea the file area.
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 * @param array $args remaining file args.
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 * @param bool $forcedownload.
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 * @param array $options additional options affecting the file serving.
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 */
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function qformat_xhtml_question_preview_pluginfile($previewcontext, $questionid,
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        $filecontext, $filecomponent, $filearea, $args, $forcedownload, $options = array()) {
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    global $CFG;
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    list($context, $course, $cm) = get_context_info_array($previewcontext->id);
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    require_login($course, false, $cm);
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    question_require_capability_on($questionid, 'view');
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    $fs = get_file_storage();
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    $relativepath = implode('/', $args);
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    $fullpath = "/{$filecontext->id}/{$filecomponent}/{$filearea}/{$relativepath}";
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    if (!$file = $fs->get_file_by_hash(sha1($fullpath)) or $file->is_directory()) {
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        send_file_not_found();
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    }
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    send_stored_file($file, 0, 0, $forcedownload, $options);
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}