gnu-social/actions/attachment.php

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<?php
/**
* StatusNet, the distributed open-source microblogging tool
*
* Show notice attachments
*
* PHP version 5
*
* LICENCE: This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category Personal
* @package StatusNet
* @author Evan Prodromou <evan@status.net>
* @copyright 2008-2009 StatusNet, Inc.
* @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/
*/
if (!defined('STATUSNET') && !defined('LACONICA')) {
exit(1);
}
require_once INSTALLDIR.'/lib/attachmentlist.php';
/**
* Show notice attachments
*
* @category Personal
* @package StatusNet
* @author Evan Prodromou <evan@status.net>
* @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/
*/
class AttachmentAction extends Action
{
/**
* Attachment object to show
*/
var $attachment = null;
/**
* Load attributes based on database arguments
*
* Loads all the DB stuff
*
* @param array $args $_REQUEST array
*
* @return success flag
*/
function prepare($args)
{
parent::prepare($args);
if ($id = $this->trimmed('attachment')) {
$this->attachment = File::getKV($id);
}
if (empty($this->attachment)) {
// TRANS: Client error displayed trying to get a non-existing attachment.
$this->clientError(_('No such attachment.'), 404);
return false;
}
return true;
}
/**
* Is this action read-only?
*
* @return boolean true
*/
function isReadOnly($args)
{
return true;
}
/**
* Title of the page
*
* @return string title of the page
*/
function title()
{
$a = new Attachment($this->attachment);
return $a->title();
}
function extraHead()
{
$this->element('link',array('rel'=>'alternate',
'type'=>'application/json+oembed',
'href'=>common_local_url(
'oembed',
array(),
array('format'=>'json', 'url'=>
common_local_url('attachment',
array('attachment' => $this->attachment->id)))),
'title'=>'oEmbed'),null);
$this->element('link',array('rel'=>'alternate',
'type'=>'text/xml+oembed',
'href'=>common_local_url(
'oembed',
array(),
array('format'=>'xml','url'=>
common_local_url('attachment',
array('attachment' => $this->attachment->id)))),
'title'=>'oEmbed'),null);
/* Twitter card support. See https://dev.twitter.com/docs/cards */
/* @fixme: should we display twitter cards only for attachments posted
* by local users ? Seems mandatory to display twitter:creator
*/
switch ($this->attachment->mimetype) {
case 'image/pjpeg':
case 'image/jpeg':
case 'image/jpg':
case 'image/png':
case 'image/gif':
$this->element('meta', array('name' => 'twitter:card',
'content' => 'photo'),
null);
$this->element('meta', array('name' => 'twitter:url',
'content' => common_local_url('attachment',
array('attachment' => $this->attachment->id))),
null );
$this->element('meta', array('name' => 'twitter:image',
'content' => $this->attachment->url));
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$this->element('meta', array('name' => 'twitter:title',
'content' => $this->attachment->title));
$ns = new AttachmentNoticeSection($this);
$notices = $ns->getNotices();
$noticeArray = $notices->fetchAll();
// Should not have more than 1 notice for this attachment.
if( count($noticeArray) != 1 ) { break; }
$post = $noticeArray[0];
$flink = Foreign_link::getByUserID($post->profile_id, TWITTER_SERVICE);
if( $flink ) { // Our local user has registered Twitter Gateway
$fuser = Foreign_user::getForeignUser($flink->foreign_id, TWITTER_SERVICE);
if( $fuser ) { // Got nickname for local user's Twitter account
$this->element('meta', array('name' => 'twitter:creator',
'content' => '@'.$fuser->nickname));
}
}
break;
default: break;
}
}
/**
* Handle input
*
* Only handles get, so just show the page.
*
* @param array $args $_REQUEST data (unused)
*
* @return void
*/
function handle($args)
{
parent::handle($args);
if (empty($this->attachment->filename)) {
// if it's not a local file, gtfo
common_redirect($this->attachment->url, 303);
} else {
$this->showPage();
}
}
/**
* Fill the content area of the page
*
* Shows a single notice list item.
*
* @return void
*/
function showContent()
{
$ali = new Attachment($this->attachment, $this);
$cnt = $ali->show();
}
/**
* Don't show page notice
*
* @return void
*/
function showPageNoticeBlock()
{
}
/**
* Show aside: this attachments appears in what notices
*
* @return void
*/
function showSections() {
$ns = new AttachmentNoticeSection($this);
$ns->show();
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if (!common_config('performance', 'high')) {
$atcs = new AttachmentTagCloudSection($this);
$atcs->show();
}
}
}