272 lines
10 KiB
PHP
272 lines
10 KiB
PHP
<?php
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/**
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* StatusNet, the distributed open-source microblogging tool
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*
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* widget for displaying a list of notice attachments
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*
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* PHP version 5
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*
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* LICENCE: This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero 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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* This program 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 Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* @category UI
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* @package StatusNet
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* @author Evan Prodromou <evan@status.net>
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* @author Sarven Capadisli <csarven@status.net>
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* @copyright 2008 StatusNet, Inc.
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link http://status.net/
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*/
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if (!defined('GNUSOCIAL')) { exit(1); }
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/**
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* widget for displaying a single notice
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*
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* This widget has the core smarts for showing a single notice: what to display,
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* where, and under which circumstances. Its key method is show(); this is a recipe
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* that calls all the other show*() methods to build up a single notice. The
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* ProfileNoticeListItem subclass, for example, overrides showAuthor() to skip
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* author info (since that's implicit by the data in the page).
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*
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* @category UI
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* @package StatusNet
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* @author Evan Prodromou <evan@status.net>
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link http://status.net/
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* @see NoticeList
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* @see ProfileNoticeListItem
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*/
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class AttachmentListItem extends Widget
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{
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/** The attachment this item will show. */
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var $attachment = null;
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/**
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* @param File $attachment the attachment we will display
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*/
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function __construct(File $attachment, $out=null)
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{
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parent::__construct($out);
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$this->attachment = $attachment;
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}
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function title() {
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return $this->attachment->getTitle() ?: _('Untitled attachment');
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}
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function linkTitle() {
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return $this->title();
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}
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/**
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* recipe function for displaying a single notice.
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*
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* This uses all the other methods to correctly display a notice. Override
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* it or one of the others to fine-tune the output.
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*
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* @return void
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*/
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function show()
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{
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$this->showStart();
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try {
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$this->showNoticeAttachment();
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} catch (Exception $e) {
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$this->element('div', ['class'=>'error'], $e->getMessage());
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common_debug($e->getMessage());
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}
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$this->showEnd();
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}
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function linkAttr() {
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return array(
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'class' => 'u-url',
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'href' => $this->attachment->getAttachmentUrl(),
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'title' => $this->linkTitle());
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}
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function showNoticeAttachment()
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{
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$this->showRepresentation();
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}
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function showRepresentation() {
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$enclosure = $this->attachment->getEnclosure();
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if (Event::handle('StartShowAttachmentRepresentation', array($this->out, $this->attachment))) {
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$this->out->elementStart('label');
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$this->out->element('a', $this->linkAttr(), $this->title());
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$this->out->elementEnd('label');
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if (!empty($enclosure->mimetype)) {
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// First, prepare a thumbnail if it exists.
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$thumb = null;
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try {
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// Tell getThumbnail that we can show an animated image if it has one (4th arg, "force_still")
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$thumb = $this->attachment->getThumbnail(null, null, false, false);
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} catch (UseFileAsThumbnailException $e) {
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$thumb = null;
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} catch (UnsupportedMediaException $e) {
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// FIXME: Show a good representation of unsupported/unshowable images
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$thumb = null;
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}
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// Then get the kind of mediatype we're dealing with
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$mediatype = common_get_mime_media($enclosure->mimetype);
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// FIXME: Get proper mime recognition of Ogg files! If system has 'mediainfo', this should do it:
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// $ mediainfo --inform='General;%InternetMediaType%'
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if ($this->attachment->mimetype === 'application/ogg') {
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$mediatype = 'video'; // because this element can handle Ogg/Vorbis etc. on its own
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}
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// Ugly hack to show text/html links which have a thumbnail (such as from oEmbed/OpenGraph image URLs)
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if (!in_array($mediatype, ['image','audio','video']) && $thumb instanceof File_thumbnail) {
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$mediatype = 'image';
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}
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switch ($mediatype) {
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// Anything we understand as an image, if we need special treatment, do it in StartShowAttachmentRepresentation
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case 'image':
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if ($thumb instanceof File_thumbnail) {
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$this->out->element('img', $thumb->getHtmlAttrs(['class'=>'u-photo', 'alt' => '']));
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} else {
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try {
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// getUrl(true) because we don't want to hotlink, could be made configurable
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$this->out->element('img', ['class'=>'u-photo', 'src'=>$this->attachment->getUrl(true), 'alt' => $this->attachment->getTitle()]);
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} catch (FileNotStoredLocallyException $e) {
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$url = $e->file->getUrl(false);
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$this->out->element('a', ['href'=>$url, 'rel'=>'external'], $url);
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}
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}
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unset($thumb); // there's no need carrying this along after this
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break;
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// HTML5 media elements
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case 'audio':
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case 'video':
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if ($thumb instanceof File_thumbnail) {
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$poster = $thumb->getUrl();
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unset($thumb); // there's no need carrying this along after this
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} else {
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$poster = null;
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}
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$this->out->elementStart($mediatype,
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array('class'=>"attachment_player u-{$mediatype}",
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'poster'=>$poster,
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'controls'=>'controls'));
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$this->out->element('source',
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array('src'=>$this->attachment->getUrl(),
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'type'=>$this->attachment->mimetype));
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$this->out->elementEnd($mediatype);
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break;
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default:
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unset($thumb); // there's no need carrying this along
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switch (common_bare_mime($this->attachment->mimetype)) {
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case 'text/plain':
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$this->element('div', ['class'=>'e-content plaintext'], file_get_contents($this->attachment->getPath()));
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break;
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case 'text/html':
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if (!empty($this->attachment->filename)
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&& (GNUsocial::isAjax() || common_config('attachments', 'show_html'))) {
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// Locally-uploaded HTML. Scrub and display inline.
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$this->showHtmlFile($this->attachment);
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break;
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}
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// Fall through to default if it wasn't a _local_ text/html File object
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default:
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Event::handle('ShowUnsupportedAttachmentRepresentation', array($this->out, $this->attachment));
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}
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}
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} else {
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Event::handle('ShowUnsupportedAttachmentRepresentation', array($this->out, $this->attachment));
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}
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}
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Event::handle('EndShowAttachmentRepresentation', array($this->out, $this->attachment));
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}
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protected function showHtmlFile(File $attachment)
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{
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$body = $this->scrubHtmlFile($attachment);
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if ($body) {
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$this->out->raw($body);
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}
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}
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/**
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* @return mixed false on failure, HTML fragment string on success
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*/
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protected function scrubHtmlFile(File $attachment)
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{
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$path = $attachment->getPath();
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$raw = file_get_contents($path);
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// Normalize...
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$dom = new DOMDocument();
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if(!$dom->loadHTML($raw)) {
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common_log(LOG_ERR, "Bad HTML in local HTML attachment $path");
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return false;
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}
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// Remove <script>s or htmlawed will dump their contents into output!
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// Note: removing child nodes while iterating seems to mess things up,
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// hence the double loop.
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$scripts = array();
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foreach ($dom->getElementsByTagName('script') as $script) {
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$scripts[] = $script;
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}
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foreach ($scripts as $script) {
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common_log(LOG_DEBUG, $script->textContent);
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$script->parentNode->removeChild($script);
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}
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// Trim out everything outside the body...
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$body = $dom->saveHTML();
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$body = preg_replace('/^.*<body[^>]*>/is', '', $body);
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$body = preg_replace('/<\/body[^>]*>.*$/is', '', $body);
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require_once INSTALLDIR.'/extlib/HTMLPurifier/HTMLPurifier.auto.php';
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$purifier = new HTMLPurifier();
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return $purifier->purify($body);
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}
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/**
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* start a single notice.
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*
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* @return void
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*/
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function showStart()
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{
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// XXX: RDFa
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// TODO: add notice_type class e.g., notice_video, notice_image
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$this->out->elementStart('li');
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}
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/**
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* finish the notice
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*
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* Close the last elements in the notice list item
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*
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* @return void
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*/
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function showEnd()
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{
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$this->out->elementEnd('li');
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}
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}
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