diff options
Diffstat (limited to 'actions/remotesubscribe.php')
| -rw-r--r-- | actions/remotesubscribe.php | 340 |
1 files changed, 67 insertions, 273 deletions
diff --git a/actions/remotesubscribe.php b/actions/remotesubscribe.php index 7323103fc..353717beb 100644 --- a/actions/remotesubscribe.php +++ b/actions/remotesubscribe.php @@ -1,5 +1,16 @@ <?php -/* +/** + * Handler for remote subscription + * + * PHP version 5 + * + * @category Action + * @package Laconica + * @author Evan Prodromou <evan@controlyourself.ca> + * @author Robin Millette <millette@controlyourself.ca> + * @license http://www.fsf.org/licensing/licenses/agpl.html AGPLv3 + * @link http://laconi.ca/ + * * Laconica - a distributed open-source microblogging tool * Copyright (C) 2008, 2009, Control Yourself, Inc. * @@ -15,11 +26,26 @@ * * 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('LACONICA')) { exit(1); } +if (!defined('LACONICA')) { + exit(1); +} + +require_once INSTALLDIR.'/lib/omb.php'; +require_once INSTALLDIR.'/extlib/libomb/service_consumer.php'; +require_once INSTALLDIR.'/extlib/libomb/profile.php'; -require_once(INSTALLDIR.'/lib/omb.php'); +/** + * Handler for remote subscription + * + * @category Action + * @package Laconica + * @author Evan Prodromou <evan@controlyourself.ca> + * @author Robin Millette <millette@controlyourself.ca> + * @license http://www.fsf.org/licensing/licenses/agpl.html AGPLv3 + * @link http://laconi.ca/ + */ class RemotesubscribeAction extends Action { @@ -36,7 +62,7 @@ class RemotesubscribeAction extends Action return false; } - $this->nickname = $this->trimmed('nickname'); + $this->nickname = $this->trimmed('nickname'); $this->profile_url = $this->trimmed('profile_url'); return true; @@ -47,7 +73,7 @@ class RemotesubscribeAction extends Action parent::handle($args); if ($_SERVER['REQUEST_METHOD'] == 'POST') { - # CSRF protection + /* Use a session token for CSRF protection. */ $token = $this->trimmed('token'); if (!$token || $token != common_session_token()) { $this->showForm(_('There was a problem with your session token. '. @@ -71,13 +97,11 @@ class RemotesubscribeAction extends Action if ($this->err) { $this->element('div', 'error', $this->err); } else { - $inst = sprintf(_('To subscribe, you can [login](%%%%action.%s%%%%),' . - ' or [register](%%%%action.%s%%%%) a new ' . - ' account. If you already have an account ' . - ' on a [compatible microblogging site](%%doc.openmublog%%), ' . - ' enter your profile URL below.'), - (!common_config('site','openidonly')) ? 'login' : 'openidlogin', - (!common_config('site','openidonly')) ? 'register' : 'openidlogin'); + $inst = _('To subscribe, you can [login](%%action.login%%),' . + ' or [register](%%action.register%%) a new ' . + ' account. If you already have an account ' . + ' on a [compatible microblogging site](%%doc.openmublog%%), ' . + ' enter your profile URL below.'); $output = common_markup_to_html($inst); $this->elementStart('div', 'instructions'); $this->raw($output); @@ -92,8 +116,8 @@ class RemotesubscribeAction extends Action function showContent() { - # id = remotesubscribe conflicts with the - # button on profile page + /* The id 'remotesubscribe' conflicts with the + button on profile page. */ $this->elementStart('form', array('id' => 'form_remote_subscribe', 'method' => 'post', 'class' => 'form_settings', @@ -119,247 +143,50 @@ class RemotesubscribeAction extends Action function remoteSubscription() { - $user = $this->getUser(); - - if (!$user) { + if (!$this->nickname) { $this->showForm(_('No such user.')); return; } + $user = User::staticGet('nickname', $this->nickname); + $this->profile_url = $this->trimmed('profile_url'); if (!$this->profile_url) { - $this->showForm(_('No such user.')); + $this->showForm(_('No such user')); return; } - if (!Validate::uri($this->profile_url, array('allowed_schemes' => array('http', 'https')))) { + if (!common_valid_http_url($this->profile_url)) { $this->showForm(_('Invalid profile URL (bad format)')); return; } - $fetcher = Auth_Yadis_Yadis::getHTTPFetcher(); - $yadis = Auth_Yadis_Yadis::discover($this->profile_url, $fetcher); - - if (!$yadis || $yadis->failed) { - $this->showForm(_('Not a valid profile URL (no YADIS document).')); - return; - } - - # XXX: a little liberal for sites that accidentally put whitespace before the xml declaration - - $xrds =& Auth_Yadis_XRDS::parseXRDS(trim($yadis->response_text)); - - if (!$xrds) { - $this->showForm(_('Not a valid profile URL (no XRDS defined).')); - return; - } - - $omb = $this->getOmb($xrds); - - if (!$omb) { - $this->showForm(_('Not a valid profile URL (incorrect services).')); - return; - } - - if (omb_service_uri($omb[OAUTH_ENDPOINT_REQUEST]) == - common_local_url('requesttoken')) - { - $this->showForm(_('That\'s a local profile! Login to subscribe.')); + try { + $service = new OMB_Service_Consumer($this->profile_url, + common_root_url(), + omb_oauth_datastore()); + } catch (OMB_InvalidYadisException $e) { + $this->showForm(_('Not a valid profile URL (no YADIS document or ' . + 'no or invalid XRDS defined).')); return; } - if (User::staticGet('uri', omb_local_id($omb[OAUTH_ENDPOINT_REQUEST]))) { - $this->showForm(_('That\'s a local profile! Login to subscribe.')); + if ($service->getServiceURI(OAUTH_ENDPOINT_REQUEST) == + common_local_url('requesttoken') || + User::staticGet('uri', $service->getRemoteUserURI())) { + $this->showForm(_('That’s a local profile! Login to subscribe.')); return; } - list($token, $secret) = $this->requestToken($omb); - - if (!$token || !$secret) { - $this->showForm(_('Couldn\'t get a request token.')); + try { + $service->requestToken(); + } catch (OMB_RemoteServiceException $e) { + $this->showForm(_('Couldn’t get a request token.')); return; } - $this->requestAuthorization($user, $omb, $token, $secret); - } - - function getUser() - { - $user = null; - if ($this->nickname) { - $user = User::staticGet('nickname', $this->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] = $matches[0]; - } else { - # no match for type - return false; - } - } - return true; - } - - function requestToken($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'], $return['oauth_token_secret']); - } - - function requestAuthorization($user, $omb, $token, $secret) - { - $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', common_config('license', 'url')); - + /* Create an OMB_Profile from $user. */ $profile = $user->getProfile(); if (!$profile) { common_log_db_error($user, 'SELECT', __FILE__); @@ -367,49 +194,16 @@ class RemotesubscribeAction extends Action return; } - if (!is_null($profile->fullname)) { - $req->set_parameter('omb_listenee_fullname', $profile->fullname); - } - if (!is_null($profile->homepage)) { - $req->set_parameter('omb_listenee_homepage', $profile->homepage); - } - if (!is_null($profile->bio)) { - $req->set_parameter('omb_listenee_bio', $profile->bio); - } - if (!is_null($profile->location)) { - $req->set_parameter('omb_listenee_location', $profile->location); - } - $avatar = $profile->getAvatar(AVATAR_PROFILE_SIZE); - if ($avatar) { - $req->set_parameter('omb_listenee_avatar', $avatar->url); - } - - # XXX: add a nonce to prevent replay attacks - - $req->set_parameter('oauth_callback', common_local_url('finishremotesubscribe')); - - # XXX: test to see if endpoint accepts this signature method - - $req->sign_request(omb_hmac_sha1(), $con, $tok); - - # store all our info here - - $omb['listenee'] = $user->nickname; - $omb['listener'] = omb_local_id($omb[OAUTH_ENDPOINT_REQUEST]); - $omb['token'] = $token; - $omb['secret'] = $secret; - # call doesn't work after bounce back so we cache; maybe serialization issue...? - $omb['access_token_url'] = omb_service_uri($omb[OAUTH_ENDPOINT_ACCESS]); - $omb['post_notice_url'] = omb_service_uri($omb[OMB_ENDPOINT_POSTNOTICE]); - $omb['update_profile_url'] = omb_service_uri($omb[OMB_ENDPOINT_UPDATEPROFILE]); + $target_url = $service->requestAuthorization( + profile_to_omb_profile($user->uri, $profile), + common_local_url('finishremotesubscribe')); common_ensure_session(); - $_SESSION['oauth_authorization_request'] = $omb; - - # Redirect to authorization service + $_SESSION['oauth_authorization_request'] = serialize($service); - common_redirect($req->to_url(), 303); - return; + /* Redirect to the remote service for authorization. */ + common_redirect($target_url, 303); } } +?> |