+ if ($token != $omb['token']) {
+ $this->clientError(_('Not authorized.'));
+ return;
+ }
+
+ $version = $req->get_parameter('omb_version');
+
+ if ($version != OMB_VERSION_01) {
+ $this->clientError(_('Unknown version of OMB protocol.'));
+ return;
+ }
+
+ $nickname = $req->get_parameter('omb_listener_nickname');
+
+ if (!$nickname) {
+ $this->clientError(_('No nickname provided by remote server.'));
+ return;
+ }
+
+ $profile_url = $req->get_parameter('omb_listener_profile');
+
+ if (!$profile_url) {
+ $this->clientError(_('No profile URL returned by server.'));
+ return;
+ }
+
+ if (!Validate::uri($profile_url, array('allowed_schemes' => array('http', 'https')))) {
+ $this->clientError(_('Invalid profile URL returned by server.'));
+ return;
+ }
+
+ if ($profile_url == common_local_url('showstream', array('nickname' => $nickname))) {
+ $this->clientError(_('You can use the local subscription!'));
+ return;
+ }
+
+ common_debug('listenee: "'.$omb['listenee'].'"', __FILE__);
+
+ $user = User::staticGet('nickname', $omb['listenee']);
+
+ if (!$user) {
+ $this->clientError(_('User being listened to doesn\'t exist.'));
+ return;
+ }
+
+ $other = User::staticGet('uri', $omb['listener']);
+
+ if ($other) {
+ $this->clientError(_('You can use the local subscription!'));
+ return;
+ }
+
+ $fullname = $req->get_parameter('omb_listener_fullname');
+ $homepage = $req->get_parameter('omb_listener_homepage');
+ $bio = $req->get_parameter('omb_listener_bio');
+ $location = $req->get_parameter('omb_listener_location');
+ $avatar_url = $req->get_parameter('omb_listener_avatar');
+
+ list($newtok, $newsecret) = $this->access_token($omb);
+
+ if (!$newtok || !$newsecret) {
+ $this->clientError(_('Couldn\'t convert request tokens to access tokens.'));
+ return;
+ }
+
+ # XXX: possible attack point; subscribe and return someone else's profile URI
+
+ $remote = Remote_profile::staticGet('uri', $omb['listener']);
+
+ if ($remote) {
+ $exists = true;
+ $profile = Profile::staticGet($remote->id);
+ $orig_remote = clone($remote);
+ $orig_profile = clone($profile);
+ # XXX: compare current postNotice and updateProfile URLs to the ones
+ # stored in the DB to avoid (possibly...) above attack
+ } else {
+ $exists = false;
+ $remote = new Remote_profile();
+ $remote->uri = $omb['listener'];
+ $profile = new Profile();
+ }
+
+ $profile->nickname = $nickname;
+ $profile->profileurl = $profile_url;
+
+ if (!is_null($fullname)) {
+ $profile->fullname = $fullname;
+ }
+ if (!is_null($homepage)) {
+ $profile->homepage = $homepage;
+ }
+ if (!is_null($bio)) {
+ $profile->bio = $bio;
+ }
+ if (!is_null($location)) {
+ $profile->location = $location;
+ }
+
+ if ($exists) {
+ $profile->update($orig_profile);
+ } else {
+ $profile->created = DB_DataObject_Cast::dateTime(); # current time
+ $id = $profile->insert();
+ if (!$id) {
+ $this->serverError(_('Error inserting new profile'));
+ return;
+ }
+ $remote->id = $id;
+ }
+
+ if ($avatar_url) {
+ if (!$this->add_avatar($profile, $avatar_url)) {
+ $this->serverError(_('Error inserting avatar'));
+ return;
+ }
+ }
+
+ $remote->postnoticeurl = $omb['post_notice_url'];
+ $remote->updateprofileurl = $omb['update_profile_url'];
+
+ if ($exists) {
+ if (!$remote->update($orig_remote)) {
+ $this->serverError(_('Error updating remote profile'));
+ return;
+ }
+ } else {
+ $remote->created = DB_DataObject_Cast::dateTime(); # current time
+ if (!$remote->insert()) {
+ $this->serverError(_('Error inserting remote profile'));
+ return;
+ }
+ }
+
+ if ($user->hasBlocked($profile)) {
+ $this->clientError(_('That user has blocked you from subscribing.'));
+ return;
+ }
+
+ $sub = new Subscription();
+
+ $sub->subscriber = $remote->id;
+ $sub->subscribed = $user->id;
+
+ $sub_exists = false;
+
+ if ($sub->find(true)) {
+ $sub_exists = true;
+ $orig_sub = clone($sub);
+ } else {
+ $sub_exists = false;
+ $sub->created = DB_DataObject_Cast::dateTime(); # current time
+ }
+
+ $sub->token = $newtok;
+ $sub->secret = $newsecret;
+
+ if ($sub_exists) {
+ $result = $sub->update($orig_sub);
+ } else {
+ $result = $sub->insert();
+ }
+
+ if (!$result) {
+ common_log_db_error($sub, ($sub_exists) ? 'UPDATE' : 'INSERT', __FILE__);
+ $this->clientError(_('Couldn\'t insert new subscription.'));
+ return;
+ }
+
+ # Notify user, if necessary
+
+ mail_subscribe_notify_profile($user, $profile);
+
+ # Clear the data
+ unset($_SESSION['oauth_authorization_request']);
+
+ # If we show subscriptions in reverse chron order, this should
+ # show up close to the top of the page
+
+ common_redirect(common_local_url('subscribers', array('nickname' =>
+ $user->nickname)),
+ 303);
+ }
+
+ function add_avatar($profile, $url)
+ {
+ $temp_filename = tempnam(sys_get_temp_dir(), 'listener_avatar');
+ copy($url, $temp_filename);
+ $imagefile = new ImageFile($profile->id, $temp_filename);
+ $filename = Avatar::filename($profile->id,
+ image_type_to_extension($imagefile->type),
+ null,
+ common_timestamp());
+ rename($temp_filename, Avatar::path($filename));
+ return $profile->setOriginal($filename);
+ }