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miteruzo
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<?php
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use dokuwiki\Extension\SyntaxPlugin;
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/**
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* Easily embed videos from various Video Sharing sites
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*
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* @license GPL 2 (http://www.gnu.org/licenses/gpl.html)
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* @author Andreas Gohr <andi@splitbrain.org>
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*/
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class syntax_plugin_vshare_video extends SyntaxPlugin
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{
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protected $sites;
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protected $sizes = [
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'small' => [255, 143],
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'medium' => [425, 239],
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'large' => [520, 293],
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'full' => ['100%', ''],
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'half' => ['50%', ''],
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];
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protected $alignments = [
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0 => 'none',
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1 => 'right',
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2 => 'left',
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3 => 'center',
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];
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/**
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* Constructor.
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* Intitalizes the supported video sites
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*/
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public function __construct()
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{
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$this->sites = helper_plugin_vshare::loadSites();
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}
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/** @inheritdoc */
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public function getType()
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{
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return 'substition';
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}
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/** @inheritdoc */
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public function getPType()
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{
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return 'block';
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}
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/** @inheritdoc */
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public function getSort()
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{
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return 159;
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}
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/** @inheritdoc */
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public function connectTo($mode)
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{
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$pattern = implode('|', array_keys($this->sites));
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$this->Lexer->addSpecialPattern('\{\{\s?(?:' . $pattern . ')>[^}]*\}\}', $mode, 'plugin_vshare_video');
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}
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/** @inheritdoc */
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public function handle($match, $state, $pos, Doku_Handler $handler)
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{
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$command = substr($match, 2, -2);
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// title
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[$command, $title] = sexplode('|', $command, 2, '');
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$title = trim($title);
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// alignment
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$align = 0;
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if (substr($command, 0, 1) == ' ') ++$align;
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if (substr($command, -1) == ' ') $align += 2;
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$command = trim($command);
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// get site and video
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[$site, $vid] = explode('>', $command);
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if (!$this->sites[$site]) return null; // unknown site
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if (!$vid) return null; // no video!?
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// what size?
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[$vid, $pstr] = sexplode('?', $vid, 2, '');
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parse_str($pstr, $userparams);
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[$width, $height] = $this->parseSize($userparams);
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// get URL
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$url = $this->insertPlaceholders($this->sites[$site]['url'], $vid, $width, $height);
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[$url, $urlpstr] = sexplode('?', $url, 2, '');
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parse_str($urlpstr, $urlparams);
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// merge parameters
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$params = array_merge($urlparams, $userparams);
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$url = $url . '?' . buildURLparams($params, '&');
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return [
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'site' => $site,
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'domain' => parse_url($url, PHP_URL_HOST),
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'video' => $vid,
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'url' => $url,
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'align' => $this->alignments[$align],
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'width' => $width,
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'height' => $height,
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'title' => $title
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];
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}
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/** @inheritdoc */
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public function render($mode, Doku_Renderer $R, $data)
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{
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if ($mode != 'xhtml') return false;
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if (is_null($data)) return false;
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if (is_a($R, 'renderer_plugin_dw2pdf')) {
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$R->doc .= $this->pdf($data);
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} else {
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$R->doc .= $this->iframe($data, $this->getConf('gdpr') ? 'div' : 'iframe');
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}
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return true;
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}
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/**
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* Prepare the HTML for output of the embed iframe
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* @param array $data
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* @param string $element Can be used to not directly embed the iframe
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* @return string
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*/
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public function iframe($data, $element = 'iframe')
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{
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$attributes = [
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'src' => $data['url'],
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'width' => $data['width'],
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'height' => $data['height'],
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'style' => $this->sizeToStyle($data['width'], $data['height']),
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'class' => 'vshare vshare__' . $data['align'],
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'allowfullscreen' => '',
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'frameborder' => 0,
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'scrolling' => 'no',
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'data-domain' => $data['domain'],
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'loading' => 'lazy',
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];
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if ($this->getConf('extrahard')) {
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$attributes = array_merge($attributes, $this->hardenedIframeAttributes());
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}
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return "<$element "
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. buildAttributes($attributes)
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. '><h3>' . hsc($data['title']) . "</h3></$element>";
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}
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/**
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* Create a style attribute for the given size
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*
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* @param int|string $width
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* @param int|string $height
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* @return string
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*/
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public function sizeToStyle($width, $height)
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{
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// no unit? use px
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if ($width && $width == (int)$width) {
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$width .= 'px';
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}
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// no unit? use px
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if ($height && $height == (int)$height) {
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$height .= 'px';
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}
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$style = '';
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if ($width) $style .= 'width:' . $width . ';';
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if ($height) $style .= 'height:' . $height . ';';
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return $style;
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}
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/**
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* Prepare the HTML for output in PDF exports
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*
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* @param array $data
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* @return string
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*/
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public function pdf($data)
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{
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$html = '<div class="vshare vshare__' . $data['align'] . '"
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width="' . $data['width'] . '"
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height="' . $data['height'] . '">';
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$html .= '<a href="' . $data['url'] . '" class="vshare">';
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$html .= '<img src="' . DOKU_BASE . 'lib/plugins/vshare/video.png" />';
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$html .= '</a>';
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$html .= '<br />';
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$html .= '<a href="' . $data['url'] . '" class="vshare">';
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$html .= ($data['title'] ? hsc($data['title']) : 'Video');
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$html .= '</a>';
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$html .= '</div>';
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return $html;
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}
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/**
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* Fill the placeholders in the given URL
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*
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* @param string $url
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* @param string $vid
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* @param int|string $width
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* @param int|string $height
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* @return string
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*/
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public function insertPlaceholders($url, $vid, $width, $height)
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{
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global $INPUT;
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$url = str_replace('@VIDEO@', rawurlencode($vid), $url);
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$url = str_replace('@DOMAIN@', rawurlencode($INPUT->server->str('HTTP_HOST')), $url);
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$url = str_replace('@WIDTH@', $width, $url);
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$url = str_replace('@HEIGHT@', $height, $url);
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return $url;
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}
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/**
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* Extract the wanted size from the parameter list
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*
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* @param array $params
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* @return int[]
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*/
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public function parseSize(&$params)
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{
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$known = implode('|', array_keys($this->sizes));
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foreach (array_keys($params) as $key) {
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if (preg_match("/^((\d+)x(\d+))|($known)\$/i", $key, $m)) {
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unset($params[$key]);
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if (isset($m[4])) {
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return $this->sizes[strtolower($m[4])];
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} else {
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return [$m[2], $m[3]];
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}
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}
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}
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// default
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return $this->sizes['medium'];
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}
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/**
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* Get additional attributes to set on the iframe to harden
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*
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* @link https://dustri.org/b/youtube-video-embedding-harm-reduction.html
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* @return array
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*/
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protected function hardenedIframeAttributes()
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{
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$disallow = [
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'accelerometer',
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'ambient-light-sensor',
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'autoplay',
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'battery',
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'browsing-topics',
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'camera',
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'display-capture',
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'domain-agent',
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'document-domain',
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'encrypted-media',
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'execution-while-not-rendered',
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'execution-while-out-of-viewport',
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'gamepad',
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'geolocation',
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'gyroscope',
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'hid',
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'identity-credentials-get',
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'idle-detection',
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'local-fonts',
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'magnetometer',
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'microphone',
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'midi',
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'otp-credentials',
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'payment',
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'picture-in-picture',
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'publickey-credentials-create',
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'publickey-credentials-get',
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'screen-wake-lock',
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'serial',
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'speaker-selection',
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'usb',
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'window-management',
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'xr-spatial-tracking',
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];
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$disallow = implode('; ', array_map(static fn($v) => "$v 'none'", $disallow));
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return [
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'credentialless' => '',
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'sandbox' => 'allow-scripts allow-same-origin',
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'allow' => $disallow,
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'csp' => 'sandbox allow-scripts allow-same-origin',
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'referrerpolicy' => 'no-referrer',
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];
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}
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}
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