gnu-social/plugins/WebFinger/lib/webfingerresource.php

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<?php
/**
* WebFinger resource parent class
*
* @package GNUsocial
* @author Mikael Nordfeldth
* @copyright 2013 Free Software Foundation, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
* @link http://status.net/
*/
abstract class WebFingerResource
{
protected $identities = array();
protected $object = null;
protected $type = null;
public function __construct(Managed_DataObject $object)
{
$this->object = $object;
}
public function getObject()
{
if ($this->object === null) {
throw new ServerException('Object is not set');
}
return $this->object;
}
public function getAliases()
{
$aliases = array();
// Add the URI as an identity, this is _not_ necessarily an HTTP url
$uri = $this->object->getUri();
$aliases[$uri] = true;
if (common_config('webfinger', 'http_alias')
&& strtolower(parse_url($uri, PHP_URL_SCHEME)) === 'https') {
$aliases[preg_replace('/^https:/', 'http:', $uri, 1)] = true;
}
try {
$aliases[$this->object->getUrl()] = true;
} catch (InvalidUrlException $e) {
// getUrl failed because no valid URL could be returned, just ignore it
}
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/**
* Here we add some hacky hotfixes for remote lookups that have been taught the
* (at least now) wrong URI but it's still obviously the same user. Such as:
* - https://site.example/user/1 even if the client requests https://site.example/index.php/user/1
* - https://site.example/user/1 even if the client requests https://site.example//index.php/user/1
* - https://site.example/index.php/user/1 even if the client requests https://site.example/user/1
* - https://site.example/index.php/user/1 even if the client requests https://site.example///index.php/user/1
*/
foreach(array_keys($aliases) as $alias) {
try {
// get a "fancy url" version of the alias, even without index.php/
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$alt_url = common_fake_local_fancy_url($alias);
// store this as well so remote sites can be sure we really are the same profile
$aliases[$alt_url] = true;
} catch (Exception $e) {
// Apparently we couldn't rewrite that, the $alias was as the function wanted it to be
}
try {
// get a non-"fancy url" version of the alias, i.e. add index.php/
$alt_url = common_fake_local_nonfancy_url($alias);
// store this as well so remote sites can be sure we really are the same profile
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$aliases[$alt_url] = true;
} catch (Exception $e) {
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// Apparently we couldn't rewrite that, the $alias was as the function wanted it to be
}
}
// return a unique set of aliases by extracting only the keys
return array_keys($aliases);
}
abstract public function updateXRD(XML_XRD $xrd);
}