. */ /** * Implements WebFinger for GNU Social, as well as support for the * '.well-known/host-meta' resource. * * Depends on: LRDD plugin * * @package GNUsocial * @author Mikael Nordfeldth */ if (!defined('GNUSOCIAL')) { exit(1); } class WebFingerPlugin extends Plugin { const OAUTH_ACCESS_TOKEN_REL = 'http://apinamespace.org/oauth/access_token'; const OAUTH_REQUEST_TOKEN_REL = 'http://apinamespace.org/oauth/request_token'; const OAUTH_AUTHORIZE_REL = 'http://apinamespace.org/oauth/authorize'; public $http_alias = false; public $fancyurlfix = true; // adds + interprets some extra aliases related to 'index.php/' URLs public function initialize() { common_config_set('webfinger', 'http_alias', $this->http_alias); common_config_set('webfinger', 'fancyurlfix', $this->fancyurlfix); } public function onRouterInitialized($m) { $m->connect('.well-known/host-meta', array('action' => 'hostmeta')); $m->connect('.well-known/host-meta.:format', array('action' => 'hostmeta', 'format' => '(xml|json)')); // the resource GET parameter can be anywhere, so don't mention it here $m->connect('.well-known/webfinger', array('action' => 'webfinger')); $m->connect('.well-known/webfinger.:format', array('action' => 'webfinger', 'format' => '(xml|json)')); $m->connect('main/ownerxrd', array('action' => 'ownerxrd')); return true; } public function onLoginAction($action, &$login) { switch ($action) { case 'hostmeta': case 'webfinger': $login = true; return false; } return true; } public function onStartGetProfileAcctUri(Profile $profile, &$acct) { $wfr = new WebFingerResource_Profile($profile); try { $acct = $wfr->reconstructAcct(); } catch (Exception $e) { return true; } return false; } public function onEndGetWebFingerResource($resource, WebFingerResource &$target=null, array $args=array()) { $profile = null; if (Discovery::isAcct($resource)) { $parts = explode('@', substr(urldecode($resource), 5)); // 5 is strlen of 'acct:' 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)); } $profile = $user->getProfile(); } else { throw new Exception(_('Remote profiles not supported via WebFinger yet.')); } } } else { try { $user = User::getByUri($resource); $profile = $user->getProfile(); } catch (NoResultException $e) { if (common_config('webfinger', 'fancyurlfix')) { try { try { // if it's a /index.php/ url // common_fake_local_fancy_url can throw an exception $alt_url = common_fake_local_fancy_url($resource); } catch (Exception $e) { // let's try to create a fake local /index.php/ url // this too if it can't do anything about the URL $alt_url = common_fake_local_nonfancy_url($resource); } // and this will throw a NoResultException if not found $user = User::getByUri($alt_url); $profile = $user->getProfile(); } catch (Exception $e) { // apparently we didn't get any matches with that, so continue... } } } } // if we still haven't found a match... if (!$profile instanceof Profile) { // if our rewrite hack didn't work, try to get something by profile URL $profile = Profile::getKV('profileurl', $resource); } if ($profile instanceof Profile) { $target = new WebFingerResource_Profile($profile); return false; // We got our target, stop handler execution } $notice = Notice::getKV('uri', $resource); if ($notice instanceof Notice) { $target = new WebFingerResource_Notice($notice); return false; } return true; } public function onStartHostMetaLinks(array &$links) { foreach (Discovery::supportedMimeTypes() as $type) { $links[] = new XML_XRD_Element_Link(Discovery::LRDD_REL, common_local_url('webfinger') . '?resource={uri}', $type, true); // isTemplate } // OAuth connections $links[] = new XML_XRD_Element_link(self::OAUTH_ACCESS_TOKEN_REL, common_local_url('ApiOAuthAccessToken')); $links[] = new XML_XRD_Element_link(self::OAUTH_REQUEST_TOKEN_REL, common_local_url('ApiOAuthRequestToken')); $links[] = new XML_XRD_Element_link(self::OAUTH_AUTHORIZE_REL, common_local_url('ApiOAuthAuthorize')); } /** * Add a link header for LRDD Discovery */ public function onStartShowHTML($action) { if ($action instanceof ShowstreamAction) { $resource = $action->getTarget()->getUri(); $url = common_local_url('webfinger') . '?resource='.urlencode($resource); foreach (array(Discovery::JRD_MIMETYPE, Discovery::XRD_MIMETYPE) as $type) { header('Link: <'.$url.'>; rel="'. Discovery::LRDD_REL.'"; type="'.$type.'"', false); } } } public function onPluginVersion(array &$versions) { $versions[] = array('name' => 'WebFinger', 'version' => GNUSOCIAL_VERSION, 'author' => 'Mikael Nordfeldth', 'homepage' => 'http://www.gnu.org/software/social/', // TRANS: Plugin description. 'rawdescription' => _m('Adds WebFinger lookup to GNU Social')); return true; } }