gnu-social/lib/xrdaction.php

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<?php
/*
* StatusNet - the distributed open-source microblogging tool
* Copyright (C) 2010, StatusNet, Inc.
*
* 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/>.
*/
/**
* @package OStatusPlugin
* @maintainer James Walker <james@status.net>
*/
if (!defined('STATUSNET')) {
exit(1);
}
class XrdAction extends Action
{
const PROFILEPAGE = 'http://webfinger.net/rel/profile-page';
const UPDATESFROM = 'http://schemas.google.com/g/2010#updates-from';
const HCARD = 'http://microformats.org/profile/hcard';
public $uri;
public $user;
public $xrd;
function handle()
{
$nick = $this->user->nickname;
$profile = $this->user->getProfile();
if (empty($this->xrd)) {
$xrd = new XRD();
} else {
$xrd = $this->xrd;
}
if (empty($xrd->subject)) {
$xrd->subject = self::normalize($this->uri);
}
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if (Event::handle('StartXrdActionAliases', array(&$xrd, $this->user))) {
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// Possible aliases for the user
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$uris = array($this->user->uri, $profile->profileurl);
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// FIXME: Webfinger generation code should live somewhere on its own
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$path = common_config('site', 'path');
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if (empty($path)) {
$uris[] = sprintf('acct:%s@%s', $nick, common_config('site', 'server'));
}
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foreach ($uris as $uri) {
if ($uri != $xrd->subject) {
$xrd->alias[] = $uri;
}
}
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Event::handle('EndXrdActionAliases', array(&$xrd, $this->user));
}
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if (Event::handle('StartXrdActionLinks', array(&$xrd, $this->user))) {
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$xrd->links[] = array('rel' => self::PROFILEPAGE,
'type' => 'text/html',
'href' => $profile->profileurl);
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// hCard
$xrd->links[] = array('rel' => self::HCARD,
'type' => 'text/html',
'href' => common_local_url('hcard', array('nickname' => $nick)));
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// XFN
$xrd->links[] = array('rel' => 'http://gmpg.org/xfn/11',
'type' => 'text/html',
'href' => $profile->profileurl);
// FOAF
$xrd->links[] = array('rel' => 'describedby',
'type' => 'application/rdf+xml',
'href' => common_local_url('foaf',
array('nickname' => $nick)));
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Event::handle('EndXrdActionLinks', array(&$xrd, $this->user));
}
header('Content-type: application/xrd+xml');
print $xrd->toXML();
}
/**
* Given a "user id" make sure it's normalized to either a webfinger
* acct: uri or a profile HTTP URL.
*/
public static function normalize($user_id)
{
if (substr($user_id, 0, 5) == 'http:' ||
substr($user_id, 0, 6) == 'https:' ||
substr($user_id, 0, 5) == 'acct:') {
return $user_id;
}
if (strpos($user_id, '@') !== FALSE) {
return 'acct:' . $user_id;
}
return 'http://' . $user_id;
}
public static function isWebfinger($user_id)
{
$uri = self::normalize($user_id);
return (substr($uri, 0, 5) == 'acct:');
}
}