Proyectos de Subversion Moodle

<?php

// This file is part of Moodle - http://moodle.org/

//

// Moodle is free software: you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// (at your option) any later version.

//

// Moodle is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

//

// You should have received a copy of the GNU General Public License

// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**

 * Open a given resource in Amanote.

 *

 * If the user doesn't have access to the resource, it will search if there is another

 * corresponding resource in an other course (from backup/restore, for instance) in

 * which the current user is enrolled in.

 *

 * @package     filter_amanote

 * @copyright   2021 Amaplex Software

 * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

require_once('../../config.php');

require_once('../../lib/externallib.php');

require_once('./amanote.php');

// Verify that the current user is logged in.

require_login();

// Initialize params.

$annotatableid = isset($_GET['annotatableId']) ? $_GET['annotatableId'] : null;

if ($annotatableid == null) {

    // Backward compatibility.

    $annotatableid = isset($_GET['amaResourceId']) ? $_GET['amaResourceId'] : null;

}

$pagenumber = isset($_GET['pageNumber']) ? $_GET['pageNumber'] : null;

$file = null;

if (!validate_annotatableid($annotatableid)) {

    echo 'Invalid resource id.';

    exit();

}

$explodedid = explode('.', $annotatableid);

// Get the file corresponding to the given id in a course in which the user is enrolled.

if (count($explodedid) >= 3) {

    $courseid = $explodedid[0];

    $modid = $explodedid[1];

    $fileid = $explodedid[2];

    $sql = "SELECT

            {files}.id AS id,

            {files}.contextid,

            {files}.component,

            {files}.filearea,

            {files}.filename,

            {files}.filepath,

            {files}.mimetype,

            {course_modules}.instance AS modid,

            {course_modules}.course AS courseid

            FROM {files}

            INNER JOIN {context} ON {context}.id = {files}.contextid

            INNER JOIN {course_modules} ON {course_modules}.id = {context}.instanceid

            WHERE (contenthash, timecreated)=

                (SELECT contenthash,timecreated FROM {files}

                WHERE {files}.id=:fileid)

            AND {course_modules}.course IN

                (SELECT courseId FROM {enrol}

                INNER JOIN {user_enrolments} ON {enrol}.id = {user_enrolments}.enrolid

                WHERE {user_enrolments}.userid=:userid)

            ORDER BY ABS({files}.id - :fileid2) ASC";

    $result = $DB->get_records_sql($sql, ['fileid' => $fileid, 'userid' => $USER->id, 'fileid2' => $fileid]);

    if (!$result || count($result) <= 0) {

        echo 'You don\'t have access to this resource.';

        exit();

    }

    $files = array_values($result);

    $file = array_shift($files);

    $annotatableid = $file->courseid . '.' . $file->modid . '.' . $file->id;

}

// Generate the Amanote's URL.

$url = generate_amanote_url($annotatableid, $file, $pagenumber);

// Redirect to Amanote.

echo "If you are not redirected please <a href=\"$url\">click here</a>

<script language='JavaScript'>

window.location.href='$url';

</script>";