]> git.mxchange.org Git - quix0rs-gnu-social.git/blobdiff - plugins/OStatus/OStatusPlugin.php
Merge remote-tracking branch 'mainline/1.0.x' into people_tags_rebase
[quix0rs-gnu-social.git] / plugins / OStatus / OStatusPlugin.php
index b472ae24207e35f4b558aba616c070787497c355..39a1619104d3b7c8653e55282807e38c92054e20 100644 (file)
  * @maintainer Brion Vibber <brion@status.net>
  */
 
-if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
+if (!defined('STATUSNET')) {
+    exit(1);
+}
 
 set_include_path(get_include_path() . PATH_SEPARATOR . dirname(__FILE__) . '/extlib/');
 
 class FeedSubException extends Exception
 {
+    function __construct($msg=null)
+    {
+        $type = get_class($this);
+        if ($msg) {
+            parent::__construct("$type: $msg");
+        } else {
+            parent::__construct($type);
+        }
+    }
 }
 
 class OStatusPlugin extends Plugin
@@ -41,22 +52,29 @@ class OStatusPlugin extends Plugin
     function onRouterInitialized($m)
     {
         // Discovery actions
-        $m->connect('.well-known/host-meta',
-                    array('action' => 'hostmeta'));
-        $m->connect('main/xrd',
-                    array('action' => 'userxrd'));
         $m->connect('main/ownerxrd',
                     array('action' => 'ownerxrd'));
         $m->connect('main/ostatus',
                     array('action' => 'ostatusinit'));
+        $m->connect('main/ostatustag',
+                    array('action' => 'ostatustag'));
+        $m->connect('main/ostatustag?nickname=:nickname',
+                    array('action' => 'ostatustag'), array('nickname' => '[A-Za-z0-9_-]+'));
         $m->connect('main/ostatus?nickname=:nickname',
                   array('action' => 'ostatusinit'), array('nickname' => '[A-Za-z0-9_-]+'));
         $m->connect('main/ostatus?group=:group',
                   array('action' => 'ostatusinit'), array('group' => '[A-Za-z0-9_-]+'));
+        $m->connect('main/ostatus?peopletag=:peopletag&tagger=:tagger',
+                  array('action' => 'ostatusinit'), array('tagger' => '[A-Za-z0-9_-]+',
+                                                          'peopletag' => '[A-Za-z0-9_-]+'));
+
+        // Remote subscription actions
         $m->connect('main/ostatussub',
                     array('action' => 'ostatussub'));
         $m->connect('main/ostatusgroup',
                     array('action' => 'ostatusgroup'));
+        $m->connect('main/ostatuspeopletag',
+                    array('action' => 'ostatuspeopletag'));
 
         // PuSH actions
         $m->connect('main/push/hub', array('action' => 'pushhub'));
@@ -72,6 +90,9 @@ class OStatusPlugin extends Plugin
         $m->connect('main/salmon/group/:id',
                     array('action' => 'groupsalmon'),
                     array('id' => '[0-9]+'));
+        $m->connect('main/salmon/peopletag/:id',
+                    array('action' => 'peopletagsalmon'),
+                    array('id' => '[0-9]+'));
         return true;
     }
 
@@ -87,6 +108,8 @@ class OStatusPlugin extends Plugin
 
         // Outgoing from our internal PuSH hub
         $qm->connect('hubconf', 'HubConfQueueHandler');
+        $qm->connect('hubprep', 'HubPrepQueueHandler');
+
         $qm->connect('hubout', 'HubOutQueueHandler');
 
         // Outgoing Salmon replies (when we don't need a return value)
@@ -102,7 +125,10 @@ class OStatusPlugin extends Plugin
      */
     function onStartEnqueueNotice($notice, &$transports)
     {
-        $transports[] = 'ostatus';
+        if ($notice->isLocal()) {
+            // put our transport first, in case there's any conflict (like OMB)
+            array_unshift($transports, 'ostatus');
+        }
         return true;
     }
 
@@ -133,12 +159,14 @@ class OStatusPlugin extends Plugin
             $user = $feed->getUser();
             $id   = $user->id;
             $profile = $user->getProfile();
-            $feed->setActivitySubject($profile->asActivityNoun('subject'));
         } else if ($feed instanceof AtomGroupNoticeFeed) {
             $salmonAction = 'groupsalmon';
             $group = $feed->getGroup();
             $id = $group->id;
-            $feed->setActivitySubject($group->asActivitySubject());
+        } else if ($feed instanceof AtomListNoticeFeed) {
+            $salmonAction = 'peopletagsalmon';
+            $peopletag = $feed->getList();
+            $id = $peopletag->id;
         } else {
             return true;
         }
@@ -153,6 +181,9 @@ class OStatusPlugin extends Plugin
 
             // Also, we'll add in the salmon link
             $salmon = common_local_url($salmonAction, array('id' => $id));
+            $feed->addLink($salmon, array('rel' => Salmon::REL_SALMON));
+
+            // XXX: these are deprecated
             $feed->addLink($salmon, array('rel' => Salmon::NS_REPLIES));
             $feed->addLink($salmon, array('rel' => Salmon::NS_MENTIONS));
         }
@@ -196,49 +227,135 @@ class OStatusPlugin extends Plugin
      * Add in an OStatus subscribe button
      */
     function onStartProfileRemoteSubscribe($output, $profile)
+    {
+        $this->onStartProfileListItemActionElements($output, $profile);
+        return false;
+    }
+
+    function onStartGroupSubscribe($widget, $group)
     {
         $cur = common_current_user();
 
         if (empty($cur)) {
-            // Add an OStatus subscribe
             $output->elementStart('li', 'entity_subscribe');
+            $profile = $peopletag->getTagger();
             $url = common_local_url('ostatusinit',
-                                    array('nickname' => $profile->nickname));
-            $output->element('a', array('href' => $url,
+                                    array('group' => $group->nickname));
+            $widget->out->element('a', array('href' => $url,
                                         'class' => 'entity_remote_subscribe'),
                                 _m('Subscribe'));
 
             $output->elementEnd('li');
+            return false;
         }
 
-        return false;
+        return true;
     }
 
-    function onStartGroupSubscribe($output, $group)
+    function onStartSubscribePeopletagForm($output, $peopletag)
     {
         $cur = common_current_user();
 
         if (empty($cur)) {
-            // Add an OStatus subscribe
+            $output->elementStart('li', 'entity_subscribe');
+            $profile = $peopletag->getTagger();
             $url = common_local_url('ostatusinit',
-                                    array('group' => $group->nickname));
+                                    array('tagger' => $profile->nickname, 'peopletag' => $peopletag->tag));
             $output->element('a', array('href' => $url,
                                         'class' => 'entity_remote_subscribe'),
-                                _m('Join'));
+                                _m('Subscribe'));
+
+            $output->elementEnd('li');
+            return false;
         }
 
         return true;
     }
 
-    /**
-     * Check if we've got remote replies to send via Salmon.
-     *
-     * @fixme push webfinger lookup & sending to a background queue
-     * @fixme also detect short-form name for remote subscribees where not ambiguous
-     */
+    function onStartShowTagProfileForm($action, $profile)
+    {
+        $action->elementStart('form', array('method' => 'post',
+                                           'id' => 'form_tag_user',
+                                           'class' => 'form_settings',
+                                           'name' => 'tagprofile',
+                                           'action' => common_local_url('tagprofile', array('id' => @$profile->id))));
 
-    function onEndNoticeSave($notice)
+        $action->elementStart('fieldset');
+        $action->element('legend', null, _('Tag remote profile'));
+        $action->hidden('token', common_session_token());
+
+        $user = common_current_user();
+
+        $action->elementStart('ul', 'form_data');
+        $action->elementStart('li');
+
+        $action->input('uri', _('Remote profile'), $action->trimmed('uri'),
+                     _('OStatus user\'s address, like nickname@example.com or http://example.net/nickname'));
+        $action->elementEnd('li');
+        $action->elementEnd('ul');
+        $action->submit('fetch', _('Fetch'));
+        $action->elementEnd('fieldset');
+        $action->elementEnd('form');
+    }
+
+    function onStartTagProfileAction($action, $profile)
     {
+        $err = null;
+        $uri = $action->trimmed('uri');
+
+        if (!$profile && $uri) {
+            try {
+                if (Validate::email($uri)) {
+                    $oprofile = Ostatus_profile::ensureWebfinger($uri);
+                } else if (Validate::uri($uri)) {
+                    $oprofile = Ostatus_profile::ensureProfileURL($uri);
+                } else {
+                    throw new Exception('Invalid URI');
+                }
+
+                // redirect to the new profile.
+                common_redirect(common_local_url('tagprofile', array('id' => $oprofile->profile_id)), 303);
+                return false;
+
+            } catch (Exception $e) {
+                $err = _m("Sorry, we could not reach that address. Please make sure that the OStatus address is like nickname@example.com or http://example.net/nickname");
+            }
+
+            $action->showForm($err);
+            return false;
+        }
+        return true;
+    }
+
+    /*
+     * If the field being looked for is URI look for the profile
+     */
+    function onStartProfileCompletionSearch($action, $profile, $search_engine) {
+        if ($action->field == 'uri') {
+            $user = new User();
+            $profile->joinAdd($user);
+            $profile->whereAdd('uri LIKE "%' . $profile->escape($q) . '%"');
+            $profile->query();
+
+            if ($profile->N == 0) {
+                try {
+                    if (Validate::email($q)) {
+                        $oprofile = Ostatus_profile::ensureWebfinger($q);
+                    } else if (Validate::uri($q)) {
+                        $oprofile = Ostatus_profile::ensureProfileURL($q);
+                    } else {
+                        throw new Exception('Invalid URI');
+                    }
+                    return $this->filter(array($oprofile->localProfile()));
+
+                } catch (Exception $e) {
+                    $this->msg = _m("Sorry, we could not reach that address. Please make sure that the OStatus address is like nickname@example.com or http://example.net/nickname");
+                    return array();
+                }
+            }
+            return false;
+        }
+        return true;
     }
 
     /**
@@ -256,7 +373,7 @@ class OStatusPlugin extends Plugin
         $matches = array();
 
         // Webfinger matches: @user@example.com
-        if (preg_match_all('!(?:^|\s+)@((?:\w+\.)*\w+@(?:\w+\.)*\w+(?:\w+\-\w+)*\.\w+)!',
+        if (preg_match_all('!(?:^|\s+)@((?:\w+\.)*\w+@(?:\w+\-?\w+\.)*\w+(?:\w+\-\w+)*\.\w+)!',
                        $text,
                        $wmatches,
                        PREG_OFFSET_CAPTURE)) {
@@ -290,7 +407,7 @@ class OStatusPlugin extends Plugin
                     $url = "$scheme://$target";
                     $this->log(LOG_INFO, "Checking profile address '$url'");
                     try {
-                        $oprofile = Ostatus_profile::ensureProfile($url);
+                        $oprofile = Ostatus_profile::ensureProfileURL($url);
                         if ($oprofile && !$oprofile->isGroup()) {
                             $profile = $oprofile->localProfile();
                             $matches[$pos] = array('mentioned' => array($profile),
@@ -392,7 +509,7 @@ class OStatusPlugin extends Plugin
 
         foreach ($urls as $url) {
             try {
-                return Ostatus_profile::ensureProfile($url);
+                return Ostatus_profile::ensureProfileURL($url);
             } catch (Exception $e) {
                 common_log(LOG_ERR, 'Profile lookup failed for ' .
                                     $arg . ': ' . $e->getMessage());
@@ -415,12 +532,12 @@ class OStatusPlugin extends Plugin
     }
 
     function onEndShowStatusNetStyles($action) {
-        $action->cssLink('plugins/OStatus/theme/base/css/ostatus.css');
+        $action->cssLink($this->path('theme/base/css/ostatus.css'));
         return true;
     }
 
     function onEndShowStatusNetScripts($action) {
-        $action->script('plugins/OStatus/js/ostatus.js');
+        $action->script($this->path('js/ostatus.js'));
         return true;
     }
 
@@ -447,10 +564,12 @@ class OStatusPlugin extends Plugin
                 }
 
                 $url = $notice->url;
+                // TRANSLATE: %s is a domain.
                 $title = sprintf(_m("Sent from %s via OStatus"), $domain);
                 return false;
             }
         }
+       return true;
     }
 
     /**
@@ -470,6 +589,24 @@ class OStatusPlugin extends Plugin
         }
     }
 
+    /**
+     * Tell the FeedSub infrastructure whether we have any active OStatus
+     * usage for the feed; if not it'll be able to garbage-collect the
+     * feed subscription.
+     *
+     * @param FeedSub $feedsub
+     * @param integer $count in/out
+     * @return mixed hook return code
+     */
+    function onFeedSubSubscriberCount($feedsub, &$count)
+    {
+        $oprofile = Ostatus_profile::staticGet('feeduri', $feedsub->uri);
+        if ($oprofile) {
+            $count += $oprofile->subscriberCount();
+        }
+        return true;
+    }
+
     /**
      * When about to subscribe to a remote user, start a server-to-server
      * PuSH subscription if needed. If we can't establish that, abort.
@@ -499,6 +636,7 @@ class OStatusPlugin extends Plugin
         }
 
         if (!$oprofile->subscribe()) {
+            // TRANS: Exception.
             throw new Exception(_m('Could not set up remote subscription.'));
         }
     }
@@ -528,23 +666,10 @@ class OStatusPlugin extends Plugin
             return true;
         }
 
-        $act = new Activity();
+        $sub = Subscription::pkeyGet(array('subscriber' => $subscriber->id,
+                                           'subscribed' => $other->id));
 
-        $act->verb = ActivityVerb::FOLLOW;
-
-        $act->id   = TagURI::mint('follow:%d:%d:%s',
-                                  $subscriber->id,
-                                  $other->id,
-                                  common_date_iso8601(time()));
-
-        $act->time    = time();
-        $act->title   = _("Follow");
-        $act->content = sprintf(_("%s is now following %s."),
-                               $subscriber->getBestName(),
-                               $other->getBestName());
-
-        $act->actor   = ActivityObject::fromProfile($subscriber);
-        $act->object  = ActivityObject::fromProfile($other);
+        $act = $sub->asActivity();
 
         $oprofile->notifyActivity($act, $subscriber);
 
@@ -586,8 +711,10 @@ class OStatusPlugin extends Plugin
                                   common_date_iso8601(time()));
 
         $act->time    = time();
-        $act->title   = _("Unfollow");
-        $act->content = sprintf(_("%s stopped following %s."),
+        $act->title   = _m('Unfollow');
+        // TRANS: Success message for unsubscribe from user attempt through OStatus.
+        // TRANS: %1$s is the unsubscriber's name, %2$s is the unsubscribed user's name.
+        $act->content = sprintf(_m('%1$s stopped following %2$s.'),
                                $profile->getBestName(),
                                $other->getBestName());
 
@@ -618,6 +745,9 @@ class OStatusPlugin extends Plugin
                 throw new Exception(_m('Could not set up remote group membership.'));
             }
 
+            // NOTE: we don't use Group_member::asActivity() since that record
+            // has not yet been created.
+
             $member = Profile::staticGet($user->id);
 
             $act = new Activity();
@@ -632,7 +762,9 @@ class OStatusPlugin extends Plugin
 
             $act->time = time();
             $act->title = _m("Join");
-            $act->content = sprintf(_m("%s has joined group %s."),
+            // TRANS: Success message for subscribe to group attempt through OStatus.
+            // TRANS: %1$s is the member name, %2$s is the subscribed group's name.
+            $act->content = sprintf(_m('%1$s has joined group %2$s.'),
                                     $member->getBestName(),
                                     $oprofile->getBestName());
 
@@ -640,6 +772,7 @@ class OStatusPlugin extends Plugin
                 return true;
             } else {
                 $oprofile->garbageCollect();
+                // TRANS: Exception.
                 throw new Exception(_m("Failed joining remote group."));
             }
         }
@@ -655,7 +788,7 @@ class OStatusPlugin extends Plugin
      * it'll be left with a stray membership record.
      *
      * @param User_group $group
-     * @param User $user
+     * @param Profile $user
      *
      * @return mixed hook return value
      */
@@ -681,7 +814,9 @@ class OStatusPlugin extends Plugin
 
             $act->time = time();
             $act->title = _m("Leave");
-            $act->content = sprintf(_m("%s has left group %s."),
+            // TRANS: Success message for unsubscribe from group attempt through OStatus.
+            // TRANS: %1$s is the member name, %2$s is the unsubscribed group's name.
+            $act->content = sprintf(_m('%1$s has left group %2$s.'),
                                     $member->getBestName(),
                                     $oprofile->getBestName());
 
@@ -689,6 +824,95 @@ class OStatusPlugin extends Plugin
         }
     }
 
+    /**
+     * When one of our local users tries to subscribe to a remote peopletag,
+     * notify the remote server. If the notification is rejected,
+     * deny the subscription.
+     *
+     * @param Profile_list $peopletag
+     * @param User         $user
+     *
+     * @return mixed hook return value
+     */
+
+    function onStartSubscribePeopletag($peopletag, $user)
+    {
+        $oprofile = Ostatus_profile::staticGet('peopletag_id', $peopletag->id);
+        if ($oprofile) {
+            if (!$oprofile->subscribe()) {
+                throw new Exception(_m('Could not set up remote peopletag subscription.'));
+            }
+
+            $sub = $user->getProfile();
+            $tagger = Profile::staticGet($peopletag->tagger);
+
+            $act = new Activity();
+            $act->id = TagURI::mint('subscribe_peopletag:%d:%d:%s',
+                                    $sub->id,
+                                    $peopletag->id,
+                                    common_date_iso8601(time()));
+
+            $act->actor = ActivityObject::fromProfile($sub);
+            $act->verb = ActivityVerb::FOLLOW;
+            $act->object = $oprofile->asActivityObject();
+
+            $act->time = time();
+            $act->title = _m("Follow list");
+            $act->content = sprintf(_m("%s is now following people tagged %s by %s."),
+                                    $sub->getBestName(),
+                                    $oprofile->getBestName(),
+                                    $tagger->getBestName());
+
+            if ($oprofile->notifyActivity($act, $sub)) {
+                return true;
+            } else {
+                $oprofile->garbageCollect();
+                throw new Exception(_m("Failed subscribing to remote peopletag."));
+            }
+        }
+    }
+
+    /**
+     * When one of our local users unsubscribes to a remote peopletag, notify the remote
+     * server.
+     *
+     * @param Profile_list $peopletag
+     * @param User         $user
+     *
+     * @return mixed hook return value
+     */
+
+    function onEndUnsubscribePeopletag($peopletag, $user)
+    {
+        $oprofile = Ostatus_profile::staticGet('peopletag_id', $peopletag->id);
+        if ($oprofile) {
+            // Drop the PuSH subscription if there are no other subscribers.
+            $oprofile->garbageCollect();
+
+            $sub = Profile::staticGet($user->id);
+            $tagger = Profile::staticGet($peopletag->tagger);
+
+            $act = new Activity();
+            $act->id = TagURI::mint('unsubscribe_peopletag:%d:%d:%s',
+                                    $sub->id,
+                                    $peopletag->id,
+                                    common_date_iso8601(time()));
+
+            $act->actor = ActivityObject::fromProfile($member);
+            $act->verb = ActivityVerb::UNFOLLOW;
+            $act->object = $oprofile->asActivityObject();
+
+            $act->time = time();
+            $act->title = _m("Unfollow peopletag");
+            $act->content = sprintf(_m("%s stopped following the list %s by %s."),
+                                    $sub->getBestName(),
+                                    $oprofile->getBestName(),
+                                    $tagger->getBestName());
+
+            $oprofile->notifyActivity($act, $user);
+        }
+    }
+
     /**
      * Notify remote users when their notices get favorited.
      *
@@ -696,7 +920,6 @@ class OStatusPlugin extends Plugin
      * @param Notice $notice being favored
      * @return hook return value
      */
-
     function onEndFavorNotice(Profile $profile, Notice $notice)
     {
         $user = User::staticGet('id', $profile->id);
@@ -711,24 +934,102 @@ class OStatusPlugin extends Plugin
             return true;
         }
 
+        $fav = Fave::pkeyGet(array('user_id' => $user->id,
+                                   'notice_id' => $notice->id));
+
+        if (empty($fav)) {
+            // That's weird.
+            return true;
+        }
+
+        $act = $fav->asActivity();
+
+        $oprofile->notifyActivity($act, $profile);
+
+        return true;
+    }
+
+    function onEndTagProfile($ptag)
+    {
+        $oprofile = Ostatus_profile::staticGet('profile_id', $ptag->tagged);
+
+        if (empty($oprofile)) {
+            return true;
+        }
+
+        $plist = $ptag->getMeta();
+        if ($plist->private) {
+            return true;
+        }
+
         $act = new Activity();
 
-        $act->verb = ActivityVerb::FAVORITE;
-        $act->id   = TagURI::mint('favor:%d:%d:%s',
-                                  $profile->id,
-                                  $notice->id,
+        $tagger = $plist->getTagger();
+        $tagged = Profile::staticGet('id', $ptag->tagged);
+
+        $act->verb = ActivityVerb::TAG;
+        $act->id   = TagURI::mint('tag_profile:%d:%d:%s',
+                                  $plist->tagger, $plist->id,
                                   common_date_iso8601(time()));
+        $act->time = time();
+        $act->title = _("Tag");
+        $act->content = sprintf(_("%s tagged %s in the list %s"),
+                                $tagger->getBestName(),
+                                $tagged->getBestName(),
+                                $plist->getBestName());
 
-        $act->time    = time();
-        $act->title   = _("Favor");
-        $act->content = sprintf(_("%s marked notice %s as a favorite."),
-                               $profile->getBestName(),
-                               $notice->uri);
+        $act->actor  = ActivityObject::fromProfile($tagger);
+        $act->objects = array(ActivityObject::fromProfile($tagged));
+        $act->target = ActivityObject::fromPeopletag($plist);
 
-        $act->actor   = ActivityObject::fromProfile($profile);
-        $act->object  = ActivityObject::fromNotice($notice);
+        $oprofile->notifyActivity($act, $tagger);
 
-        $oprofile->notifyActivity($act, $profile);
+        // initiate a PuSH subscription for the person being tagged
+        if (!$oprofile->subscribe()) {
+            throw new Exception(sprintf(_('Could not complete subscription to remote '.
+                                          'profile\'s feed. Tag %s could not be saved.'), $ptag->tag));
+            return false;
+        }
+        return true;
+    }
+
+    function onEndUntagProfile($ptag)
+    {
+        $oprofile = Ostatus_profile::staticGet('profile_id', $ptag->tagged);
+
+        if (empty($oprofile)) {
+            return true;
+        }
+
+        $plist = $ptag->getMeta();
+        if ($plist->private) {
+            return true;
+        }
+
+        $act = new Activity();
+
+        $tagger = $plist->getTagger();
+        $tagged = Profile::staticGet('id', $ptag->tagged);
+
+        $act->verb = ActivityVerb::UNTAG;
+        $act->id   = TagURI::mint('untag_profile:%d:%d:%s',
+                                  $plist->tagger, $plist->id,
+                                  common_date_iso8601(time()));
+        $act->time = time();
+        $act->title = _("Untag");
+        $act->content = sprintf(_("%s untagged %s from the list %s"),
+                                $tagger->getBestName(),
+                                $tagged->getBestName(),
+                                $plist->getBestName());
+
+        $act->actor  = ActivityObject::fromProfile($tagger);
+        $act->objects = array(ActivityObject::fromProfile($tagged));
+        $act->target = ActivityObject::fromPeopletag($plist);
+
+        $oprofile->notifyActivity($act, $tagger);
+
+        // unsubscribe to PuSH feed if no more required
+        $oprofile->garbageCollect();
 
         return true;
     }
@@ -764,8 +1065,10 @@ class OStatusPlugin extends Plugin
                                   $notice->id,
                                   common_date_iso8601(time()));
         $act->time    = time();
-        $act->title   = _("Disfavor");
-        $act->content = sprintf(_("%s marked notice %s as no longer a favorite."),
+        $act->title   = _m('Disfavor');
+        // TRANS: Success message for remove a favorite notice through OStatus.
+        // TRANS: %1$s is the unfavoring user's name, %2$s is URI to the no longer favored notice.
+        $act->content = sprintf(_m('%1$s marked notice %2$s as no longer a favorite.'),
                                $profile->getBestName(),
                                $notice->uri);
 
@@ -839,8 +1142,9 @@ class OStatusPlugin extends Plugin
             $action->elementStart('p', array('id' => 'entity_remote_subscribe',
                                              'class' => 'entity_subscribe'));
             $action->element('a', array('href' => common_local_url($target),
-                                        'class' => 'entity_remote_subscribe')
-                                , _m('Remote'));
+                                        'class' => 'entity_remote_subscribe'),
+                                // TRANS: Link text for link to remote subscribe.
+                                _m('Remote'));
             $action->elementEnd('p');
             $action->elementEnd('div');
         }
@@ -879,7 +1183,10 @@ class OStatusPlugin extends Plugin
                                   $profile->id,
                                   common_date_iso8601(time()));
         $act->time    = time();
+        // TRANS: Title for activity.
         $act->title   = _m("Profile update");
+        // TRANS: Ping text for remote profile update through OStatus.
+        // TRANS: %s is user that updated their profile.
         $act->content = sprintf(_m("%s has updated their profile page."),
                                $profile->getBestName());
 
@@ -893,7 +1200,7 @@ class OStatusPlugin extends Plugin
         return true;
     }
 
-    function onStartProfileListItemActionElements($item)
+    function onStartProfileListItemActionElements($item, $profile=null)
     {
         if (!common_logged_in()) {
 
@@ -901,7 +1208,12 @@ class OStatusPlugin extends Plugin
 
             if (!empty($profileUser)) {
 
-                $output = $item->out;
+                if ($item instanceof Action) {
+                    $output = $item;
+                    $profile = $item->profile;
+                } else {
+                    $output = $item->out;
+                }
 
                 // Add an OStatus subscribe
                 $output->elementStart('li', 'entity_subscribe');
@@ -909,8 +1221,17 @@ class OStatusPlugin extends Plugin
                                         array('nickname' => $profileUser->nickname));
                 $output->element('a', array('href' => $url,
                                             'class' => 'entity_remote_subscribe'),
+                                  // TRANS: Link text for a user to subscribe to an OStatus user.
                                  _m('Subscribe'));
                 $output->elementEnd('li');
+
+                $output->elementStart('li', 'entity_tag');
+                $url = common_local_url('ostatustag',
+                                        array('nickname' => $profileUser->nickname));
+                $output->element('a', array('href' => $url,
+                                            'class' => 'entity_remote_tag'),
+                                 _m('Tag'));
+                $output->elementEnd('li');
             }
         }
 
@@ -923,15 +1244,15 @@ class OStatusPlugin extends Plugin
                             'version' => STATUSNET_VERSION,
                             'author' => 'Evan Prodromou, James Walker, Brion Vibber, Zach Copley',
                             'homepage' => 'http://status.net/wiki/Plugin:OStatus',
-                            'rawdescription' =>
-                            _m('Follow people across social networks that implement '.
+                            // TRANS: Plugin description.
+                            'rawdescription' => _m('Follow people across social networks that implement '.
                                '<a href="http://ostatus.org/">OStatus</a>.'));
 
         return true;
     }
 
     /**
-     * Utility function to check if the given URL is a canonical group profile
+     * Utility function to check if the given URI is a canonical group profile
      * page, and if so return the ID number.
      *
      * @param string $url
@@ -939,31 +1260,101 @@ class OStatusPlugin extends Plugin
      */
     public static function localGroupFromUrl($url)
     {
-        $template = common_local_url('groupbyid', array('id' => '31337'));
-        $template = preg_quote($template, '/');
-        $template = str_replace('31337', '(\d+)', $template);
-        if (preg_match("/$template/", $url, $matches)) {
-            return intval($matches[1]);
+        $group = User_group::staticGet('uri', $url);
+        if ($group) {
+            $local = Local_group::staticGet('group_id', $group->id);
+            if ($local) {
+                return $group->id;
+            }
+        } else {
+            // To find local groups which haven't had their uri fields filled out...
+            // If the domain has changed since a subscriber got the URI, it'll
+            // be broken.
+            $template = common_local_url('groupbyid', array('id' => '31337'));
+            $template = preg_quote($template, '/');
+            $template = str_replace('31337', '(\d+)', $template);
+            if (preg_match("/$template/", $url, $matches)) {
+                return intval($matches[1]);
+            }
         }
         return false;
     }
 
-    /**
-     * Utility function to check if the given URL is a canonical user profile
-     * page, and if so return the ID number.
-     *
-     * @param string $url
-     * @return mixed int or false
-     */
-    public static function localProfileFromUrl($url)
+    public function onStartProfileGetAtomFeed($profile, &$feed)
     {
-        $template = common_local_url('userbyid', array('id' => '31337'));
-        $template = preg_quote($template, '/');
-        $template = str_replace('31337', '(\d+)', $template);
-        if (preg_match("/$template/", $url, $matches)) {
-            return intval($matches[1]);
+        $oprofile = Ostatus_profile::staticGet('profile_id', $profile->id);
+
+        if (empty($oprofile)) {
+            return true;
         }
+
+        $feed = $oprofile->feeduri;
         return false;
     }
 
+    function onStartGetProfileFromURI($uri, &$profile)
+    {
+        // Don't want to do Web-based discovery on our own server,
+        // so we check locally first.
+
+        $user = User::staticGet('uri', $uri);
+        
+        if (!empty($user)) {
+            $profile = $user->getProfile();
+            return false;
+        }
+
+        // Now, check remotely
+
+        $oprofile = Ostatus_profile::ensureProfileURI($uri);
+
+        if (!empty($oprofile)) {
+            $profile = $oprofile->localProfile();
+            return false;
+        }
+
+        // Still not a hit, so give up.
+
+        return true;
+    }
+
+    function onEndXrdActionLinks(&$xrd, $user)
+    {
+       $xrd->links[] = array('rel' => Discovery::UPDATESFROM,
+                             'href' => common_local_url('ApiTimelineUser',
+                                                        array('id' => $user->id,
+                                                              'format' => 'atom')),
+                             'type' => 'application/atom+xml');
+       
+                   // Salmon
+        $salmon_url = common_local_url('usersalmon',
+                                       array('id' => $user->id));
+
+        $xrd->links[] = array('rel' => Salmon::REL_SALMON,
+                              'href' => $salmon_url);
+        // XXX : Deprecated - to be removed.
+        $xrd->links[] = array('rel' => Salmon::NS_REPLIES,
+                              'href' => $salmon_url);
+
+        $xrd->links[] = array('rel' => Salmon::NS_MENTIONS,
+                              'href' => $salmon_url);
+
+        // Get this user's keypair
+        $magickey = Magicsig::staticGet('user_id', $user->id);
+        if (!$magickey) {
+            // No keypair yet, let's generate one.
+            $magickey = new Magicsig();
+            $magickey->generate($user->id);
+        }
+
+        $xrd->links[] = array('rel' => Magicsig::PUBLICKEYREL,
+                              'href' => 'data:application/magic-public-key,'. $magickey->toString(false));
+
+        // TODO - finalize where the redirect should go on the publisher
+        $url = common_local_url('ostatussub') . '?profile={uri}';
+        $xrd->links[] = array('rel' => 'http://ostatus.org/schema/1.0/subscribe',
+                              'template' => $url );
+       
+       return true;
+    }
 }