require_once('Auth/Yadis/Yadis.php');
class RemotesubscribeAction extends Action {
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function handle($args) {
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parent::handle($args);
if (common_logged_in()) {
common_element_end('form');
common_show_footer();
}
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function remote_subscription() {
$user = $this->get_user();
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if (!$user) {
$this->show_form(_t('No such user!'));
return;
}
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$profile = $this->trimmed('profile');
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if (!$profile) {
$this->show_form(_t('No such user!'));
return;
}
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if (!Validate::uri($profile, array('allowed_schemes' => array('http', 'https')))) {
$this->show_form(_t('Invalid profile URL (bad format)'));
return;
}
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$fetcher = Auth_Yadis_Yadis::getHTTPFetcher();
$yadis = Auth_Yadis_Yadis::discover($profile, $fetcher);
common_debug('remotesubscribe.php: XRDS discovery failure? "'.$yadis->failed.'"');
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if (!$yadis || $yadis->failed) {
$this->show_form(_t('Not a valid profile URL (no YADIS document).'));
return;
$this->show_form(_t('Not a valid profile URL (no XRDS defined).'));
return;
}
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common_debug('remotesubscribe.php: XRDS is "'.print_r($xrds,TRUE).'"');
$omb = $this->getOmb($xrds);
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if (!$omb) {
$this->show_form(_t('Not a valid profile URL (incorrect services).'));
return;
}
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list($token, $secret) = $this->request_token($omb);
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if (!$token || !$secret) {
$this->show_form(_t('Couldn\'t get a request token.'));
return;
}
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$this->request_authorization($user, $omb, $token, $secret);
}
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function get_user() {
$user = NULL;
$nickname = $this->trimmed('nickname');
}
function getOmb($xrds) {
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static $omb_endpoints = array(OMB_ENDPOINT_UPDATEPROFILE, OMB_ENDPOINT_POSTNOTICE);
static $oauth_endpoints = array(OAUTH_ENDPOINT_REQUEST, OAUTH_ENDPOINT_AUTHORIZE,
OAUTH_ENDPOINT_ACCESS);
$omb = array();
# XXX: the following code could probably be refactored to eliminate dupes
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common_debug('remotesubscribe.php - looking for oauth discovery service');
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$oauth_services = $xrds->services(omb_service_filter(OAUTH_DISCOVERY));
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if (!$oauth_services) {
common_debug('remotesubscribe.php - failed to find oauth discovery service');
return NULL;
}
$oauth_service = $oauth_services[0];
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common_debug('remotesubscribe.php - looking for oauth discovery XRD');
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$xrd = $this->getXRD($oauth_service, $xrds);
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if (!$xrd) {
common_debug('remotesubscribe.php - failed to find oauth discovery XRD');
return NULL;
}
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common_debug('remotesubscribe.php - adding OAuth services from XRD');
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if (!$this->addServices($xrd, $oauth_endpoints, $omb)) {
common_debug('remotesubscribe.php - failed to add OAuth services');
return NULL;
}
common_debug('remotesubscribe.php - looking for OMB discovery service');
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$omb_services = $xrds->services(omb_service_filter(OMB_NAMESPACE));
if (!$omb_services) {
}
$omb_service = $omb_services[0];
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common_debug('remotesubscribe.php - looking for OMB discovery XRD');
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$xrd = $this->getXRD($omb_service, $xrds);
if (!$xrd) {
common_debug('remotesubscribe.php - failed to find OMB discovery XRD');
return NULL;
}
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common_debug('remotesubscribe.php - adding OMB services from XRD');
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if (!$this->addServices($xrd, $omb_endpoints, $omb)) {
common_debug('remotesubscribe.php - failed to add OMB services');
return NULL;
}
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# XXX: check that we got all the services we needed
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foreach (array_merge($omb_endpoints, $oauth_endpoints) as $type) {
if (!array_key_exists($type, $omb)) {
return NULL;
}
}
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if (!omb_local_id($omb[OAUTH_ENDPOINT_REQUEST])) {
return NULL;
}
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return $omb;
}
}
return true;
}
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function request_token($omb) {
$con = omb_oauth_consumer();
$url = omb_service_uri($omb[OAUTH_ENDPOINT_REQUEST]);
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# XXX: Is this the right thing to do? Strip off GET params and make them
# POST params? Seems wrong to me.
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$parsed = parse_url($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]);
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if (!$listener) {
return NULL;
}
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$req->set_parameter('omb_listener', $listener);
$req->set_parameter('omb_version', OMB_VERSION_01);
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# XXX: test to see if endpoint accepts this signature method
$req->sign_request(omb_hmac_sha1(), $con, NULL);
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# We re-use this tool's fetcher, since it's pretty good
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$fetcher = Auth_Yadis_Yadis::getHTTPFetcher();
$result = $fetcher->post($req->get_normalized_http_url(),
$req->to_postdata());
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if ($result->status != 200) {
return NULL;
}
parse_str($result->body, $return);
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return array($return['oauth_token'], $return['oauth_token_secret']);
}
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function request_authorization($user, $omb, $token, $secret) {
global $config; # for license URL
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$con = omb_oauth_consumer();
$tok = new OAuthToken($token, $secret);
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$url = omb_service_uri($omb[OAUTH_ENDPOINT_AUTHORIZE]);
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# XXX: Is this the right thing to do? Strip off GET params and make them
# POST params? Seems wrong to me.
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$parsed = parse_url($url);
$params = array();
parse_str($parsed['query'], $params);
$req = OAuthRequest::from_consumer_and_token($con, $tok, 'GET', $url, $params);
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# We send over a ton of information. This lets the other
# server store info about our user, and it lets the current
# user decide if they really want to authorize the subscription.
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$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);
}
$nonce = $this->make_nonce();
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$req->set_parameter('oauth_callback', common_local_url('finishremotesubscribe',
array('nonce' => $nonce)));
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# XXX: test to see if endpoint accepts this signature method
$req->sign_request(omb_hmac_sha1(), $con, $tok);
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# store all our info here
$omb['listenee'] = $user->nickname;
$omb['token'] = $token;
$omb['secret'] = $secret;
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$_SESSION[$nonce] = $omb;
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# Redirect to authorization service
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common_redirect($req->to_url());
return;
}
projects / quix0rs-gnu-social.git / commitdiff