if (!defined('LACONICA')) { exit(1); }
require_once(INSTALLDIR.'/lib/omb.php');
-require_once('Auth/Yadis/Yadis.php');
class RemotesubscribeAction extends Action {
-
+
function handle($args) {
-
+
parent::handle($args);
if (common_logged_in()) {
- common_user_error(_t('You can use the local subscription!'));
+ common_user_error(_('You can use the local subscription!'));
return;
}
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
+
+ # CSRF protection
+ $token = $this->trimmed('token');
+ if (!$token || $token != common_session_token()) {
+ $this->show_form(_('There was a problem with your session token. Try again, please.'));
+ return;
+ }
+
$this->remote_subscription();
} else {
$this->show_form();
}
}
- function show_form($err=NULL) {
- $nickname = $this->trimmed('nickname');
- common_show_header(_t('Remote subscribe'));
+ function get_instructions() {
+ return _('To subscribe, you can [login](%%action.login%%),' .
+ ' or [register](%%action.register%%) a new ' .
+ ' account. If you already have an account ' .
+ ' on a [compatible microblogging site](%%doc.openmublog%%), ' .
+ ' enter your profile URL below.');
+ }
+
+ function show_top($err=NULL) {
if ($err) {
common_element('div', 'error', $err);
+ } else {
+ $instructions = $this->get_instructions();
+ $output = common_markup_to_html($instructions);
+ common_element_start('div', 'instructions');
+ common_raw($output);
+ common_element_end('p');
}
- common_element_start('form', array('id' => 'remotesubscribe', 'method' => 'POST',
+ }
+
+ function show_form($err=NULL) {
+ $nickname = $this->trimmed('nickname');
+ $profile = $this->trimmed('profile_url');
+ common_show_header(_('Remote subscribe'), NULL, $err,
+ array($this, 'show_top'));
+ # id = remotesubscribe conflicts with the
+ # button on profile page
+ common_element_start('form', array('id' => 'remsub', 'method' => 'post',
'action' => common_local_url('remotesubscribe')));
- common_input('nickname', _t('User nickname'), $nickname);
- common_input('profile', _t('Profile URL'));
- common_submit('submit', _t('Subscribe'));
+ common_hidden('token', common_session_token());
+ common_input('nickname', _('User nickname'), $nickname,
+ _('Nickname of the user you want to follow'));
+ common_input('profile_url', _('Profile URL'), $profile,
+ _('URL of your profile on another compatible microblogging service'));
+ common_submit('submit', _('Subscribe'));
common_element_end('form');
common_show_footer();
}
-
+
function remote_subscription() {
$user = $this->get_user();
-
+
if (!$user) {
- $this->show_form(_t('No such user!'));
+ $this->show_form(_('No such user.'));
return;
}
-
- $profile = $this->trimmed('profile');
-
+
+ $profile = $this->trimmed('profile_url');
+
if (!$profile) {
- $this->show_form(_t('No such user!'));
+ $this->show_form(_('No such user.'));
return;
}
-
+
if (!Validate::uri($profile, array('allowed_schemes' => array('http', 'https')))) {
- $this->show_form(_t('Invalid profile URL (bad format)'));
+ $this->show_form(_('Invalid profile URL (bad format)'));
return;
}
-
+
$fetcher = Auth_Yadis_Yadis::getHTTPFetcher();
$yadis = Auth_Yadis_Yadis::discover($profile, $fetcher);
-
- if (!$yadis) {
- $this->show_form(_t('Not a valid profile URL (no YADIS document).'));
+
+ if (!$yadis || $yadis->failed) {
+ $this->show_form(_('Not a valid profile URL (no YADIS document).'));
return;
}
- $omb = $this->getOmb($yadis);
+ # 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->show_form(_('Not a valid profile URL (no XRDS defined).'));
+ return;
+ }
+
+ $omb = $this->getOmb($xrds);
+
if (!$omb) {
- $this->show_form(_t('Not a valid profile URL (incorrect services).'));
+ $this->show_form(_('Not a valid profile URL (incorrect services).'));
+ return;
+ }
+
+ if (omb_service_uri($omb[OAUTH_ENDPOINT_REQUEST]) ==
+ common_local_url('requesttoken'))
+ {
+ $this->show_form(_('That\'s a local profile! Login to subscribe.'));
+ return;
+ }
+
+ if (User::staticGet('uri', omb_local_id($omb[OAUTH_ENDPOINT_REQUEST]))) {
+ $this->show_form(_('That\'s a local profile! Login to subscribe.'));
return;
}
list($token, $secret) = $this->request_token($omb);
-
+
if (!$token || !$secret) {
- $this->show_form(_t('Couldn\'t get a request token.'));
+ $this->show_form(_('Couldn\'t get a request token.'));
return;
}
-
+
$this->request_authorization($user, $omb, $token, $secret);
}
-
+
function get_user() {
$user = NULL;
$nickname = $this->trimmed('nickname');
return $user;
}
- function getOmb($yadis) {
- static $endpoints = array(OMB_ENDPOINT_UPDATEPROFILE, OMB_ENDPOINT_POSTNOTICE,
- OAUTH_ENDPOINT_REQUEST, OAUTH_ENDPOINT_AUTHORIZE,
- OAUTH_ENDPOINT_ACCESS);
+ function getOmb($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();
- $services = $yadis->services(); # ordered by priority
- if (!$services) {
+
+ # XXX: the following code could probably be refactored to eliminate dupes
+
+ $oauth_services = omb_get_services($xrds, OAUTH_DISCOVERY);
+
+ if (!$oauth_services) {
return NULL;
}
-
- foreach ($services as $service) {
- $types = $service->matchTypes($endpoints);
- foreach ($types as $type) {
- # We take the first one, since it's the highest priority
- if (!array_key_exists($type, $omb)) {
- # URIs is an array, priority-ordered
- $omb[$type] = $service->getURIs();
- # Special handling for request
- if ($type == OAUTH_ENDPOINT_REQUEST) {
- $nodes = $service->getElements('LocalID');
- if (!$nodes) {
- # error
- return NULL;
- }
- $omb['listener'] = $service->parser->content($nodes[0]);
- }
- }
- }
+
+ $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, $omb)) {
+ return NULL;
}
- foreach ($endpoints as $ep) {
- if (!array_key_exists($ep, $omb)) {
+
+ # XXX: check that we got all the services we needed
+
+ foreach (array_merge($omb_endpoints, $oauth_endpoints) as $type) {
+ if (!array_key_exists($type, $omb) || !$omb[$type]) {
return NULL;
}
}
- if (!array_key_exists('listener', $omb)) {
+
+ if (!omb_local_id($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[OAUTH_ENDPOINT_REQUEST][0];
-
+ $url = omb_service_uri($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);
-
- $req->set_parameter('omb_listener', $omb['listener']);
+
+ $listener = omb_local_id($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(),
$req->to_postdata());
-
+
if ($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[OAUTH_ENDPOINT_AUTHORIZE][0];
-
+
+ $url = omb_service_uri($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['listener']);
+ $req->set_parameter('omb_listener', omb_local_id($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']);
+
$profile = $user->getProfile();
+ if (!$profile) {
+ common_log_db_error($user, 'SELECT', __FILE__);
+ $this->server_error(_('User without matching profile'));
+ return;
+ }
+
if ($profile->fullname) {
$req->set_parameter('omb_listenee_fullname', $profile->fullname);
}
$req->set_parameter('omb_listenee_avatar', $avatar->url);
}
- $nonce = $this->make_nonce();
-
- $req->set_parameter('oauth_callback', common_local_url('finishremotesubscribe',
- array('nonce' => $nonce)));
-
+ # 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]);
+
+ common_ensure_session();
- $_SESSION[$nonce] = $omb;
-
+ $_SESSION['oauth_authorization_request'] = $omb;
+
# Redirect to authorization service
-
+
common_redirect($req->to_url());
return;
}
-}
\ No newline at end of file
+
+ function make_nonce() {
+ return common_good_rand(16);
+ }
+}
projects / quix0rs-gnu-social.git / blobdiff