262 lines
9.7 KiB
PHP
262 lines
9.7 KiB
PHP
<?php
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// This file is part of GNU social - https://www.gnu.org/software/social
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//
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// GNU social 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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// GNU social 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 GNU social. If not, see <http://www.gnu.org/licenses/>.
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/**
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* OembedPlugin implementation for GNU social
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*
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* @package GNUsocial
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* @author Craig Andrews <candrews@integralblue.com>
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* @author Mikael Nordfeldth <mmn@hethane.se>
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* @author hannes
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* @author Diogo Cordeiro <diogo@fc.up.pt>
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* @copyright 2019 Free Software Foundation, Inc http://www.fsf.org
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* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
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*/
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defined('GNUSOCIAL') || die();
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/**
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* Oembed provider implementation
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*
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* This class handles all /main/oembed(.xml|.json)/ requests.
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*
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* @copyright 2019 Free Software Foundation, Inc http://www.fsf.org
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* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
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*/
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class OEmbedAction extends Action
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{
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protected function handle()
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{
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parent::handle();
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$url = $this->trimmed('url');
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$tls = parse_url($url, PHP_URL_SCHEME) == 'https';
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$root_url = common_root_url($tls);
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if (substr(strtolower($url), 0, mb_strlen($root_url)) !== strtolower($root_url)) {
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// TRANS: Error message displaying attachments. %s is the site's base URL.
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throw new ClientException(sprintf(_('Embed data will only be provided for %s URLs.'), $root_url));
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}
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$path = substr($url, strlen($root_url));
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$r = Router::get();
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// $r->map will throw ClientException 404 if it fails to find a mapping
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$proxy_args = $r->map($path);
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$oembed=array();
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$oembed['version']='1.0';
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$oembed['provider_name']=common_config('site', 'name');
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$oembed['provider_url']=common_root_url();
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switch ($proxy_args['action']) {
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case 'shownotice':
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$oembed['type']='link';
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try {
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$notice = Notice::getByID($proxy_args['notice']);
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} catch (NoResultException $e) {
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throw new ClientException($e->getMessage(), 404);
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}
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$profile = $notice->getProfile();
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$authorname = $profile->getFancyName();
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// TRANS: oEmbed title. %1$s is the author name, %2$s is the creation date.
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$oembed['title'] = sprintf(
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_('%1$s\'s status on %2$s'),
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$authorname,
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common_exact_date($notice->created)
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);
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$oembed['author_name']=$authorname;
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$oembed['author_url']=$profile->profileurl;
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$oembed['url']=$notice->getUrl();
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$oembed['html']=$notice->getRendered();
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// maybe add thumbnail
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foreach ($notice->attachments() as $attachment) {
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if (!$attachment instanceof File) {
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common_debug('ATTACHMENTS array entry from notice id=='._ve($notice->getID()).
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' is something else than a File dataobject: '._ve($attachment));
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continue;
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}
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try {
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$thumb = $attachment->getThumbnail();
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$thumb_url = File_thumbnail::url($thumb->filename);
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$oembed['thumbnail_url'] = $thumb_url;
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break; // only first one
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} catch (UseFileAsThumbnailException $e) {
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$oembed['thumbnail_url'] = $attachment->getUrl();
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break; // we're happy with that
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} catch (ServerException $e) {
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//
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} catch (ClientException $e) {
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//
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}
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}
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break;
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case 'attachment':
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$id = $proxy_args['attachment'];
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$attachment = File::getKV($id);
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if (empty($attachment)) {
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// TRANS: Client error displayed in oEmbed action when attachment not found.
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// TRANS: %d is an attachment ID.
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$this->clientError(sprintf(_('Attachment %s not found.'), $id), 404);
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}
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if (
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empty($attachment->filename)
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&& !empty($file_oembed = File_oembed::getKV(
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'file_id',
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$attachment->id
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))
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) {
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// Proxy the existing oembed information
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$oembed['type']=$file_oembed->type;
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$oembed['provider']=$file_oembed->provider;
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$oembed['provider_url']=$file_oembed->provider_url;
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$oembed['width']=$file_oembed->width;
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$oembed['height']=$file_oembed->height;
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$oembed['html']=$file_oembed->html;
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$oembed['title']=$file_oembed->title;
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$oembed['author_name']=$file_oembed->author_name;
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$oembed['author_url']=$file_oembed->author_url;
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$oembed['url']=$file_oembed->getUrl();
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} elseif (substr($attachment->mimetype, 0, strlen('image/'))==='image/') {
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$oembed['type']='photo';
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if ($attachment->filename) {
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$filepath = File::path($attachment->filename);
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$gis = @getimagesize($filepath);
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if ($gis) {
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$oembed['width'] = $gis[0];
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$oembed['height'] = $gis[1];
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} else {
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// TODO Either throw an error or find a fallback?
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}
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}
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$oembed['url']=$attachment->getUrl();
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try {
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$thumb = $attachment->getThumbnail();
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$oembed['thumbnail_url'] = $thumb->getUrl();
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$oembed['thumbnail_width'] = $thumb->width;
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$oembed['thumbnail_height'] = $thumb->height;
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unset($thumb);
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} catch (UnsupportedMediaException $e) {
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// No thumbnail data available
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}
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} else {
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$oembed['type']='link';
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$oembed['url']=common_local_url(
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'attachment',
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array('attachment' => $attachment->id)
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);
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}
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if ($attachment->title) {
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$oembed['title']=$attachment->title;
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}
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break;
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default:
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// TRANS: Server error displayed in oEmbed request when a path is not supported.
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// TRANS: %s is a path.
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$this->serverError(sprintf(_('"%s" not supported for oembed requests.'), $path), 501);
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}
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switch ($this->trimmed('format')) {
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case 'xml':
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$this->init_document('xml');
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$this->elementStart('oembed');
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foreach (array(
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'version', 'type', 'provider_name',
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'provider_url', 'title', 'author_name',
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'author_url', 'url', 'html', 'width',
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'height', 'cache_age', 'thumbnail_url',
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'thumbnail_width', 'thumbnail_height',
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) as $key) {
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if (isset($oembed[$key]) && $oembed[$key]!='') {
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$this->element($key, null, $oembed[$key]);
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}
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}
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$this->elementEnd('oembed');
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$this->end_document('xml');
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break;
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case 'json':
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case null:
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$this->init_document('json');
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$this->raw(json_encode($oembed));
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$this->end_document('json');
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break;
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default:
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// TRANS: Error message displaying attachments. %s is a raw MIME type (eg 'image/png')
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$this->serverError(sprintf(_('Content type %s not supported.'), $apidata['content-type']), 501);
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}
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}
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public function init_document($type)
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{
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switch ($type) {
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case 'xml':
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header('Content-Type: application/xml; charset=utf-8');
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$this->startXML();
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break;
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case 'json':
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header('Content-Type: application/json; charset=utf-8');
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// Check for JSONP callback
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$callback = $this->arg('callback');
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if ($callback) {
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print $callback . '(';
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}
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break;
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default:
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// TRANS: Server error displayed in oEmbed action when request specifies an unsupported data format.
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$this->serverError(_('Not a supported data format.'), 501);
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break;
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}
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}
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public function end_document($type)
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{
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switch ($type) {
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case 'xml':
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$this->endXML();
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break;
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case 'json':
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// Check for JSONP callback
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$callback = $this->arg('callback');
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if ($callback) {
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print ')';
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}
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break;
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default:
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// TRANS: Server error displayed in oEmbed action when request specifies an unsupported data format.
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$this->serverError(_('Not a supported data format.'), 501);
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break;
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}
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return;
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}
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/**
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* Is this action read-only?
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*
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* @param array $args other arguments
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*
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* @return boolean is read only action?
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*/
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public function isReadOnly($args)
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{
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return true;
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}
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}
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