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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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* A script to embed vimeo videos via the site (so vimeo privacy restrictions by domain will work in the mobile app).
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*
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* The site is doing a double frame embedding:
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* - First, the media player replaces the vimeo link with an iframe pointing to vimeo.
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* - Second, the app replaces the previous iframe link with a link to this file that includes again the iframe to vimeo.
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* Thanks to these changes, the video is embedded in a page in the site server so the privacy restrictions will work.
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*
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* Note 1: Vimeo privacy restrictions seems to be based on the Referer HTTP header.
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* Note 2: This script works even if the plugin is disabled (some users could be using the vimeo embedding code).
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*
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* @package media_vimeo
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* @copyright 2017 Juan Leyva
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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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define('NO_MOODLE_COOKIES', true);
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require_once(__DIR__ . '/../../../config.php');
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require_once($CFG->dirroot . '/webservice/lib.php');
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global $OUTPUT;
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$token = required_param('token', PARAM_ALPHANUM);
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$video = required_param('video', PARAM_ALPHANUM); // Video ids are numeric, but it's more solid to expect things like 00001.
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$width = optional_param('width', 0, PARAM_INT);
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$height = optional_param('height', 0, PARAM_INT);
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$h = optional_param('h', '', PARAM_ALPHANUM); // Security hash for restricted videos.
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// Authenticate the user.
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$webservicelib = new webservice();
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$webservicelib->authenticate_user($token);
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$params = ['lang' => current_language()];
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if (!empty($h)) {
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$params['h'] = $h;
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}
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// Add do not track parameter.
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if (get_config('media_vimeo', 'donottrack')) {
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$params['dnt'] = 1;
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}
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$embedurl = new moodle_url("https://player.vimeo.com/video/$video", $params);
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$context = ['embedurl' => $embedurl->out(false)]; // Template context.
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if (empty($width) && empty($height)) {
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// Use the full page. The video will keep the ratio.
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$context['style'] = "position:absolute; top:0; left:0; width:100%; height:100%;";
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} else {
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$context['width'] = $width;
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$context['height'] = $height;
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}
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// Output the rendered template.
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echo $OUTPUT->render_from_template('media_vimeo/appembed', $context);
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