gnu-social/plugins/WebFinger/actions/webfinger.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/>.
*/
if (!defined('GNUSOCIAL')) { exit(1); }
/**
* @package WebFingerPlugin
* @author James Walker <james@status.net>
* @author Mikael Nordfeldth <mmn@hethane.se>
*/
class WebfingerAction extends XrdAction
{
protected function prepare(array $args=array())
{
parent::prepare($args);
// throws exception if resource is empty
$this->resource = Discovery::normalize($this->trimmed('resource'));
if (Discovery::isAcct($this->resource)) {
$parts = explode('@', substr(urldecode($this->resource), 5));
if (count($parts) == 2) {
list($nick, $domain) = $parts;
if ($domain === common_config('site', 'server')) {
$nick = common_canonical_nickname($nick);
$user = User::getKV('nickname', $nick);
if (!($user instanceof User)) {
throw new NoSuchUserException(array('nickname'=>$nick));
}
$this->target = $user->getProfile();
} else {
throw new Exception(_('Remote profiles not supported via WebFinger yet.'));
}
}
} else {
$user = User::getKV('uri', $this->resource);
if ($user instanceof User) {
$this->target = $user->getProfile();
} else {
// try and get it by profile url
$this->target = Profile::getKV('profileurl', $this->resource);
}
}
if (!($this->target instanceof Profile)) {
// TRANS: Client error displayed when user not found for an action.
$this->clientError(_('No such user: ') . var_export($this->resource,true), 404);
}
return true;
}
protected function setXRD()
{
if (empty($this->target)) {
throw new Exception(_('Target not set for resource descriptor'));
}
// $this->target set in a _child_ class prepare()
$nick = $this->target->nickname;
$this->xrd->subject = $this->resource;
if (Event::handle('StartXrdActionAliases', array($this->xrd, $this->target))) {
$uris = WebFinger::getIdentities($this->target);
foreach ($uris as $uri) {
if ($uri != $this->xrd->subject && !in_array($uri, $this->xrd->aliases)) {
$this->xrd->aliases[] = $uri;
}
}
Event::handle('EndXrdActionAliases', array($this->xrd, $this->target));
}
if (Event::handle('StartXrdActionLinks', array($this->xrd, $this->target))) {
$this->xrd->links[] = new XML_XRD_Element_Link(WebFinger::PROFILEPAGE,
$this->target->getUrl(), 'text/html');
// XFN
$this->xrd->links[] = new XML_XRD_Element_Link('http://gmpg.org/xfn/11',
$this->target->getUrl(), 'text/html');
// FOAF
$this->xrd->links[] = new XML_XRD_Element_Link('describedby',
common_local_url('foaf', array('nickname' => $nick)),
'application/rdf+xml');
$link = new XML_XRD_Element_Link('http://apinamespace.org/atom',
common_local_url('ApiAtomService', array('id' => $nick)),
'application/atomsvc+xml');
// XML_XRD must implement changing properties first $link['http://apinamespace.org/atom/username'] = $nick;
$this->xrd->links[] = clone $link;
if (common_config('site', 'fancy')) {
$apiRoot = common_path('api/', true);
} else {
$apiRoot = common_path('index.php/api/', true);
}
$link = new XML_XRD_Element_Link('http://apinamespace.org/twitter', $apiRoot);
// XML_XRD must implement changing properties first $link['http://apinamespace.org/twitter/username'] = $nick;
$this->xrd->links[] = clone $link;
Event::handle('EndXrdActionLinks', array($this->xrd, $this->target));
}
}
}