- $this->request_authorization($user, $omb, $token, $secret);
- }
-
- function get_user()
- {
- $user = null;
- $nickname = $this->trimmed('nickname');
- if ($nickname) {
- $user = User::staticGet('nickname', $nickname);
- }
- return $user;
- }
-
- function getOmb($xrds)
- {
-
- static $omb_endpoints = array(OMB_ENDPOINT_UPDATEPROFILE, OMB_ENDPOINT_POSTNOTICE);
- static $oauth_endpoints = array(OAUTH_ENDPOINT_REQUEST, OAUTH_ENDPOINT_AUTHORIZE,
- OAUTH_ENDPOINT_ACCESS);
- $omb = array();
-
- # XXX: the following code could probably be refactored to eliminate dupes
-
- $oauth_services = omb_get_services($xrds, OAUTH_DISCOVERY);
-
- if (!$oauth_services) {
- return null;
- }
-
- $oauth_service = $oauth_services[0];
-
- $oauth_xrd = $this->getXRD($oauth_service, $xrds);
-
- if (!$oauth_xrd) {
- return null;
- }
-
- if (!$this->addServices($oauth_xrd, $oauth_endpoints, $omb)) {
- return null;
- }
-
- $omb_services = omb_get_services($xrds, OMB_NAMESPACE);
-
- if (!$omb_services) {
- return null;
- }
-
- $omb_service = $omb_services[0];
-
- $omb_xrd = $this->getXRD($omb_service, $xrds);
-
- if (!$omb_xrd) {
- return null;
- }
-
- if (!$this->addServices($omb_xrd, $omb_endpoints, $omb)) {
- return null;
- }
-
- # XXX: check that we got all the services we needed
-
- foreach (array_merge($omb_endpoints, $oauth_endpoints) as $type) {
- if (!array_key_exists($type, $omb) || !$omb[$type]) {
- return null;
- }
- }
-
- if (!omb_local_id($omb[OAUTH_ENDPOINT_REQUEST])) {
- return null;
- }
-
- return $omb;
- }
-
- function getXRD($main_service, $main_xrds)
- {
- $uri = omb_service_uri($main_service);
- if (strpos($uri, "#") !== 0) {
- # FIXME: more rigorous handling of external service definitions
- return null;
- }
- $id = substr($uri, 1);
- $nodes = $main_xrds->allXrdNodes;
- $parser = $main_xrds->parser;
- foreach ($nodes as $node) {
- $attrs = $parser->attributes($node);
- if (array_key_exists('xml:id', $attrs) &&
- $attrs['xml:id'] == $id) {
- # XXX: trick the constructor into thinking this is the only node
- $bogus_nodes = array($node);
- return new Auth_Yadis_XRDS($parser, $bogus_nodes);
- }
- }
- return null;
- }
-
- function addServices($xrd, $types, &$omb)
- {
- foreach ($types as $type) {
- $matches = omb_get_services($xrd, $type);
- if ($matches) {
- $omb[$type] = $matches[0];
- } else {
- # no match for type
- return false;
- }
- }
- return true;
- }
-
- function request_token($omb)
- {
- $con = omb_oauth_consumer();
-
- $url = omb_service_uri($omb[OAUTH_ENDPOINT_REQUEST]);
-
- # XXX: Is this the right thing to do? Strip off GET params and make them
- # POST params? Seems wrong to me.
-
- $parsed = parse_url($url);
- $params = array();
- parse_str($parsed['query'], $params);
-
- $req = OAuthRequest::from_consumer_and_token($con, null, "POST", $url, $params);
-
- $listener = omb_local_id($omb[OAUTH_ENDPOINT_REQUEST]);
-
- if (!$listener) {
- return null;
- }
-
- $req->set_parameter('omb_listener', $listener);
- $req->set_parameter('omb_version', OMB_VERSION_01);
-
- # XXX: test to see if endpoint accepts this signature method
-
- $req->sign_request(omb_hmac_sha1(), $con, null);
-
- # We re-use this tool's fetcher, since it's pretty good
-
- $fetcher = Auth_Yadis_Yadis::getHTTPFetcher();
-
- $result = $fetcher->post($req->get_normalized_http_url(),
- $req->to_postdata(),
- array('User-Agent' => 'Laconica/' . LACONICA_VERSION));
-
- if ($result->status != 200) {
- return null;
- }
-
- parse_str($result->body, $return);
-
- return array($return['oauth_token'], $return['oauth_token_secret']);
- }
-
- function request_authorization($user, $omb, $token, $secret)
- {
- global $config; # for license URL
-
- $con = omb_oauth_consumer();
- $tok = new OAuthToken($token, $secret);
-
- $url = omb_service_uri($omb[OAUTH_ENDPOINT_AUTHORIZE]);
-
- # XXX: Is this the right thing to do? Strip off GET params and make them
- # POST params? Seems wrong to me.
-
- $parsed = parse_url($url);
- $params = array();
- parse_str($parsed['query'], $params);
-
- $req = OAuthRequest::from_consumer_and_token($con, $tok, 'GET', $url, $params);
-
- # We send over a ton of information. This lets the other
- # server store info about our user, and it lets the current
- # user decide if they really want to authorize the subscription.
-
- $req->set_parameter('omb_version', OMB_VERSION_01);
- $req->set_parameter('omb_listener', omb_local_id($omb[OAUTH_ENDPOINT_REQUEST]));
- $req->set_parameter('omb_listenee', $user->uri);
- $req->set_parameter('omb_listenee_profile', common_profile_url($user->nickname));
- $req->set_parameter('omb_listenee_nickname', $user->nickname);
- $req->set_parameter('omb_listenee_license', $config['license']['url']);
-