+if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
+
+require_once INSTALLDIR.'/lib/omb.php';
+require_once INSTALLDIR.'/extlib/libomb/service_provider.php';
+require_once INSTALLDIR.'/extlib/libomb/profile.php';
+define('TIMESTAMP_THRESHOLD', 300);
+
+class UserauthorizationAction extends Action
+{
+ var $error;
+ var $params;
+
+ function handle($args)
+ {
+ parent::handle($args);
+
+ if ($_SERVER['REQUEST_METHOD'] == 'POST') {
+ /* Use a session token for CSRF protection. */
+ $token = $this->trimmed('token');
+ if (!$token || $token != common_session_token()) {
+ $srv = $this->getStoredParams();
+ $this->showForm($srv->getRemoteUser(), _('There was a problem ' .
+ 'with your session token. Try again, ' .
+ 'please.'));
+ return;
+ }
+ /* We've shown the form, now post user's choice. */
+ $this->sendAuthorization();
+ } else {
+ if (!common_logged_in()) {
+ /* Go log in, and then come back. */
+ common_set_returnto($_SERVER['REQUEST_URI']);
+
+ common_redirect(common_local_url('login'));
+ return;
+ }
+
+ $user = common_current_user();
+ $profile = $user->getProfile();
+ if (!$profile) {
+ common_log_db_error($user, 'SELECT', __FILE__);
+ $this->serverError(_('User without matching profile'));
+ return;
+ }
+
+ /* TODO: If no token is passed the user should get a prompt to enter
+ it according to OAuth Core 1.0. */
+ try {
+ $this->validateOmb();
+ $srv = new OMB_Service_Provider(
+ profile_to_omb_profile($user->uri, $profile),
+ omb_oauth_datastore());
+
+ $remote_user = $srv->handleUserAuth();
+ } catch (Exception $e) {
+ $this->clearParams();
+ $this->clientError($e->getMessage());
+ return;
+ }
+
+ $this->storeParams($srv);
+ $this->showForm($remote_user);
+ }
+ }
+
+ function showForm($params, $error=null)
+ {
+ $this->params = $params;
+ $this->error = $error;
+ $this->showPage();
+ }
+
+ function title()
+ {
+ return _('Authorize subscription');
+ }
+
+ function showPageNotice()
+ {
+ $this->element('p', null, _('Please check these details to make sure '.
+ 'that you want to subscribe to this ' .
+ 'user’s notices. If you didn’t just ask ' .
+ 'to subscribe to someone’s notices, '.
+ 'click “Reject”.'));
+ }
+
+ function showContent()
+ {
+ $params = $this->params;
+
+ $nickname = $params->getNickname();
+ $profile = $params->getProfileURL();
+ $license = $params->getLicenseURL();
+ $fullname = $params->getFullname();
+ $homepage = $params->getHomepage();
+ $bio = $params->getBio();
+ $location = $params->getLocation();
+ $avatar = $params->getAvatarURL();
+
+ $this->elementStart('div', 'entity_profile vcard');
+ $this->elementStart('dl', 'entity_depiction');
+ $this->element('dt', null, _('Photo'));
+ $this->elementStart('dd');
+ if ($avatar) {
+ $this->element('img', array('src' => $avatar,
+ 'class' => 'photo avatar',
+ 'width' => AVATAR_PROFILE_SIZE,
+ 'height' => AVATAR_PROFILE_SIZE,
+ 'alt' => $nickname));
+ }
+ $this->elementEnd('dd');
+ $this->elementEnd('dl');
+
+ $this->elementStart('dl', 'entity_nickname');
+ $this->element('dt', null, _('Nickname'));
+ $this->elementStart('dd');
+ $hasFN = ($fullname !== '') ? 'nickname' : 'fn nickname';
+ $this->elementStart('a', array('href' => $profile,
+ 'class' => 'url '.$hasFN));
+ $this->raw($nickname);
+ $this->elementEnd('a');
+ $this->elementEnd('dd');
+ $this->elementEnd('dl');
+
+ if (!is_null($fullname)) {
+ $this->elementStart('dl', 'entity_fn');
+ $this->elementStart('dd');
+ $this->elementStart('span', 'fn');
+ $this->raw($fullname);
+ $this->elementEnd('span');
+ $this->elementEnd('dd');
+ $this->elementEnd('dl');
+ }
+ if (!is_null($location)) {
+ $this->elementStart('dl', 'entity_location');
+ $this->element('dt', null, _('Location'));
+ $this->elementStart('dd', 'label');
+ $this->raw($location);
+ $this->elementEnd('dd');
+ $this->elementEnd('dl');
+ }
+
+ if (!is_null($homepage)) {
+ $this->elementStart('dl', 'entity_url');
+ $this->element('dt', null, _('URL'));
+ $this->elementStart('dd');
+ $this->elementStart('a', array('href' => $homepage,
+ 'class' => 'url'));
+ $this->raw($homepage);
+ $this->elementEnd('a');
+ $this->elementEnd('dd');
+ $this->elementEnd('dl');
+ }
+
+ if (!is_null($bio)) {
+ $this->elementStart('dl', 'entity_note');
+ $this->element('dt', null, _('Note'));
+ $this->elementStart('dd', 'note');
+ $this->raw($bio);
+ $this->elementEnd('dd');
+ $this->elementEnd('dl');
+ }
+
+ if (!is_null($license)) {
+ $this->elementStart('dl', 'entity_license');
+ $this->element('dt', null, _('License'));
+ $this->elementStart('dd', 'license');
+ $this->element('a', array('href' => $license,
+ 'class' => 'license'),
+ $license);
+ $this->elementEnd('dd');
+ $this->elementEnd('dl');
+ }
+ $this->elementEnd('div');
+
+ $this->elementStart('div', 'entity_actions');
+ $this->elementStart('ul');
+ $this->elementStart('li', 'entity_subscribe');
+ $this->elementStart('form', array('method' => 'post',
+ 'id' => 'userauthorization',
+ 'class' => 'form_user_authorization',
+ 'name' => 'userauthorization',
+ 'action' => common_local_url(
+ 'userauthorization')));
+ $this->hidden('token', common_session_token());
+
+ $this->submit('accept', _('Accept'), 'submit accept', null,
+ _('Subscribe to this user'));
+ $this->submit('reject', _('Reject'), 'submit reject', null,
+ _('Reject this subscription'));
+ $this->elementEnd('form');
+ $this->elementEnd('li');
+ $this->elementEnd('ul');
+ $this->elementEnd('div');
+ }
+
+ function sendAuthorization()
+ {
+ $srv = $this->getStoredParams();
+
+ if (is_null($srv)) {
+ $this->clientError(_('No authorization request!'));
+ return;
+ }
+
+ $accepted = $this->arg('accept');
+ try {
+ list($val, $token) = $srv->continueUserAuth($accepted);
+ } catch (Exception $e) {
+ $this->clientError($e->getMessage());
+ return;
+ }
+ if ($val !== false) {
+ common_redirect($val, 303);
+ } elseif ($accepted) {
+ $this->showAcceptMessage($token);
+ } else {
+ $this->showRejectMessage();
+ }
+ }
+
+ function showAcceptMessage($tok)
+ {
+ common_show_header(_('Subscription authorized'));
+ $this->element('p', null,
+ _('The subscription has been authorized, but no '.
+ 'callback URL was passed. Check with the site’s ' .
+ 'instructions for details on how to authorize the ' .
+ 'subscription. Your subscription token is:'));
+ $this->element('blockquote', 'token', $tok);
+ common_show_footer();
+ }
+
+ function showRejectMessage()
+ {
+ common_show_header(_('Subscription rejected'));
+ $this->element('p', null,
+ _('The subscription has been rejected, but no '.
+ 'callback URL was passed. Check with the site’s ' .
+ 'instructions for details on how to fully reject ' .
+ 'the subscription.'));
+ common_show_footer();
+ }
+
+ function storeParams($params)
+ {
+ common_ensure_session();
+ $_SESSION['userauthorizationparams'] = serialize($params);
+ }
+
+ function clearParams()
+ {
+ common_ensure_session();
+ unset($_SESSION['userauthorizationparams']);
+ }
+
+ function getStoredParams()
+ {
+ common_ensure_session();
+ $params = unserialize($_SESSION['userauthorizationparams']);
+ return $params;
+ }
+
+ function validateOmb()
+ {
+ $listener = $_GET['omb_listener'];
+ $listenee = $_GET['omb_listenee'];
+ $nickname = $_GET['omb_listenee_nickname'];
+ $profile = $_GET['omb_listenee_profile'];
+
+ $user = User::staticGet('uri', $listener);
+ if (!$user) {
+ throw new Exception(sprintf(_('Listener URI ‘%s’ not found here.'),
+ $listener));
+ }
+
+ if (strlen($listenee) > 255) {
+ throw new Exception(sprintf(_('Listenee URI ‘%s’ is too long.'),
+ $listenee));
+ }
+
+ $other = User::staticGet('uri', $listenee);
+ if ($other) {
+ throw new Exception(sprintf(_('Listenee URI ‘%s’ is a local user.'),
+ $listenee));
+ }
+
+ $remote = Remote_profile::staticGet('uri', $listenee);
+ if ($remote) {
+ $sub = new Subscription();
+ $sub->subscriber = $user->id;
+ $sub->subscribed = $remote->id;
+ if ($sub->find(true)) {
+ throw new Exception('You are already subscribed to this user.');
+ }
+ }
+
+ if ($profile == common_profile_url($nickname)) {
+ throw new Exception(sprintf(_('Profile URL ‘%s’ is for a local user.'),
+ $profile));
+
+ }
+
+ $license = $_GET['omb_listenee_license'];
+ $site_license = common_config('license', 'url');
+ if (!common_compatible_license($license, $site_license)) {
+ throw new Exception(sprintf(_('Listenee stream license ‘%1$s’ is not ' .
+ 'compatible with site license ‘%2$s’.'),
+ $license, $site_license));
+ }
+
+ $avatar = $_GET['omb_listenee_avatar'];
+ if ($avatar) {
+ if (!common_valid_http_url($avatar) || strlen($avatar) > 255) {
+ throw new Exception(sprintf(_('Avatar URL ‘%s’ is not valid.'),
+ $avatar));
+ }
+ $size = @getimagesize($avatar);
+ if (!$size) {
+ throw new Exception(sprintf(_('Can’t read avatar URL ‘%s’.'),
+ $avatar));
+ }
+ if (!in_array($size[2], array(IMAGETYPE_GIF, IMAGETYPE_JPEG,
+ IMAGETYPE_PNG))) {
+ throw new Exception(sprintf(_('Wrong image type for avatar URL '.
+ '‘%s’.'), $avatar));
+ }
+ }
+ }