70 files changed, 2933 insertions, 475 deletions

diff --git a/plugins/FeedSub/FeedSubPlugin.php b/plugins/FeedSub/FeedSubPlugin.php
deleted file mode 100644
index e49e2a648..000000000
--- a/plugins/FeedSub/FeedSubPlugin.php
+++ /dev/null
@@ -1,115 +0,0 @@
-<?php
-/*
-StatusNet Plugin: 0.9
-Plugin Name: FeedSub
-Plugin URI: http://status.net/wiki/Feed_subscription
-Description: FeedSub allows subscribing to real-time updates from external feeds supporting PubHubSubbub protocol.
-Version: 0.1
-Author: Brion Vibber <brion@status.net>
-Author URI: http://status.net/
-*/
-
-/*
- * StatusNet - the distributed open-source microblogging tool
- * Copyright (C) 2009, StatusNet, Inc.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * 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/>.
- */
-
-/**
- * @package FeedSubPlugin
- * @maintainer Brion Vibber <brion@status.net>
- */
-
-if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
-
-define('FEEDSUB_SERVICE', 100); // fixme -- avoid hardcoding these?
-
-// We bundle the XML_Parse_Feed library...
-set_include_path(get_include_path() . PATH_SEPARATOR . dirname(__FILE__) . '/extlib');
-
-class FeedSubException extends Exception
-{
-}
-
-class FeedSubPlugin extends Plugin
-{
-    /**
-     * Hook for RouterInitialized event.
-     *
-     * @param Net_URL_Mapper $m path-to-action mapper
-     * @return boolean hook return
-     */
-    function onRouterInitialized($m)
-    {
-        $m->connect('feedsub/callback/:feed',
-                    array('action' => 'feedsubcallback'),
-                    array('feed' => '[0-9]+'));
-        $m->connect('settings/feedsub',
-                    array('action' => 'feedsubsettings'));
-        return true;
-    }
-
-    /**
-     * Add the feed settings page to the Connect Settings menu
-     *
-     * @param Action &$action The calling page
-     *
-     * @return boolean hook return
-     */
-    function onEndConnectSettingsNav(&$action)
-    {
-        $action_name = $action->trimmed('action');
-
-        $action->menuItem(common_local_url('feedsubsettings'),
-                          _m('Feeds'),
-                          _m('Feed subscription options'),
-                          $action_name === 'feedsubsettings');
-
-        return true;
-    }
-
-    /**
-     * Automatically load the actions and libraries used by the plugin
-     *
-     * @param Class $cls the class
-     *
-     * @return boolean hook return
-     *
-     */
-    function onAutoload($cls)
-    {
-        $base = dirname(__FILE__);
-        $lower = strtolower($cls);
-        $files = array("$base/$lower.php");
-        if (substr($lower, -6) == 'action') {
-            $files[] = "$base/actions/" . substr($lower, 0, -6) . ".php";
-        }
-        foreach ($files as $file) {
-            if (file_exists($file)) {
-                include_once $file;
-                return false;
-            }
-        }
-        return true;
-    }
-
-    function onCheckSchema() {
-        // warning: the autoincrement doesn't seem to set.
-        // alter table feedinfo change column id id int(11) not null  auto_increment;
-        $schema = Schema::get();
-        $schema->ensureTable('feedinfo', Feedinfo::schemaDef());
-        return true;
-    }
-}
diff --git a/plugins/FeedSub/feedinfo.php b/plugins/FeedSub/feedinfo.php
deleted file mode 100644
index b166bd6e1..000000000
--- a/plugins/FeedSub/feedinfo.php
+++ /dev/null
@@ -1,268 +0,0 @@
-<?php
-
-/*
-
-Subscription flow:
-
-    $feedinfo->subscribe()
-        generate random verification token
-            save to verify_token
-        sends a sub request to the hub...
-    
-    feedsub/callback
-        hub sends confirmation back to us via GET
-        We verify the request, then echo back the challenge.
-        On our end, we save the time we subscribed and the lease expiration
-    
-    feedsub/callback
-        hub sends us updates via POST
-        ?
-    
-*/
-
-class FeedDBException extends FeedSubException
-{
-    public $obj;
-
-    function __construct($obj)
-    {
-        parent::__construct('Database insert failure');
-        $this->obj = $obj;
-    }
-}
-
-class Feedinfo extends Memcached_DataObject
-{
-    public $__table = 'feedinfo';
-
-    public $id;
-    public $profile_id;
-
-    public $feeduri;
-    public $homeuri;
-    public $huburi;
-
-    // PuSH subscription data
-    public $verify_token;
-    public $sub_start;
-    public $sub_end;
-
-    public $created;
-    public $lastupdate;
-
-
-    public /*static*/ function staticGet($k, $v=null)
-    {
-        return parent::staticGet(__CLASS__, $k, $v);
-    }
-
-    /**
-     * return table definition for DB_DataObject
-     *
-     * DB_DataObject needs to know something about the table to manipulate
-     * instances. This method provides all the DB_DataObject needs to know.
-     *
-     * @return array array of column definitions
-     */
-
-    function table()
-    {
-        return array('id' => DB_DATAOBJECT_INT + DB_DATAOBJECT_NOTNULL,
-                     'profile_id' => DB_DATAOBJECT_INT + DB_DATAOBJECT_NOTNULL,
-                     'feeduri' => DB_DATAOBJECT_STR + DB_DATAOBJECT_NOTNULL,
-                     'homeuri' => DB_DATAOBJECT_STR + DB_DATAOBJECT_NOTNULL,
-                     'huburi' =>  DB_DATAOBJECT_STR + DB_DATAOBJECT_NOTNULL,
-                     'verify_token' => DB_DATAOBJECT_STR,
-                     'sub_start' => DB_DATAOBJECT_STR + DB_DATAOBJECT_DATE + DB_DATAOBJECT_TIME,
-                     'sub_end' => DB_DATAOBJECT_STR + DB_DATAOBJECT_DATE + DB_DATAOBJECT_TIME,
-                     'created' => DB_DATAOBJECT_STR + DB_DATAOBJECT_DATE + DB_DATAOBJECT_TIME + DB_DATAOBJECT_NOTNULL,
-                     'lastupdate' => DB_DATAOBJECT_STR + DB_DATAOBJECT_DATE + DB_DATAOBJECT_TIME + DB_DATAOBJECT_NOTNULL);
-    }
-    
-    static function schemaDef()
-    {
-        return array(new ColumnDef('id', 'integer',
-                                   /*size*/ null,
-                                   /*nullable*/ false,
-                                   /*key*/ 'PRI',
-                                   /*default*/ '0',
-                                   /*extra*/ null,
-                                   /*auto_increment*/ true),
-                     new ColumnDef('profile_id', 'integer',
-                                   null, false),
-                     new ColumnDef('feeduri', 'varchar',
-                                   255, false, 'UNI'),
-                     new ColumnDef('homeuri', 'varchar',
-                                   255, false),
-                     new ColumnDef('huburi', 'varchar',
-                                   255, false),
-                     new ColumnDef('verify_token', 'varchar',
-                                   32, true),
-                     new ColumnDef('sub_start', 'datetime',
-                                   null, true),
-                     new ColumnDef('sub_end', 'datetime',
-                                   null, true),
-                     new ColumnDef('created', 'datetime',
-                                   null, false),
-                     new ColumnDef('lastupdate', 'datetime',
-                                   null, false));
-    }
-
-    /**
-     * return key definitions for DB_DataObject
-     *
-     * DB_DataObject needs to know about keys that the table has; this function
-     * defines them.
-     *
-     * @return array key definitions
-     */
-
-    function keys()
-    {
-        return array('id' => 'P'); //?
-    }
-
-    /**
-     * return key definitions for Memcached_DataObject
-     *
-     * Our caching system uses the same key definitions, but uses a different
-     * method to get them.
-     *
-     * @return array key definitions
-     */
-
-    function keyTypes()
-    {
-        return $this->keys();
-    }
-
-    /**
-     * Fetch the StatusNet-side profile for this feed
-     * @return Profile
-     */
-    public function getProfile()
-    {
-        return Profile::staticGet('id', $this->profile_id);
-    }
-
-    /**
-     * @param FeedMunger $munger
-     * @return Feedinfo
-     */
-    public static function ensureProfile($munger)
-    {
-        $feedinfo = $munger->feedinfo();
-
-        $current = self::staticGet('feeduri', $feedinfo->feeduri);
-        if ($current) {
-            // @fixme we should probably update info as necessary
-            return $current;
-        }
-
-        $feedinfo->query('BEGIN');
-
-        try {
-            $profile = $munger->profile();
-            $result = $profile->insert();
-            if (empty($result)) {
-                throw new FeedDBException($profile);
-            }
-
-            $feedinfo->profile_id = $profile->id;
-            $result = $feedinfo->insert();
-            if (empty($result)) {
-                throw new FeedDBException($feedinfo);
-            }
-
-            $feedinfo->query('COMMIT');
-        } catch (FeedDBException $e) {
-            common_log_db_error($e->obj, 'INSERT', __FILE__);
-            $feedinfo->query('ROLLBACK');
-            return false;
-        }
-        return $feedinfo;
-    }
-
-    /**
-     * Send a subscription request to the hub for this feed.
-     * The hub will later send us a confirmation POST to /feedsub/callback.
-     *
-     * @return bool true on success, false on failure
-     */
-    public function subscribe()
-    {
-        // @fixme use the verification token
-        #$token = md5(mt_rand() . ':' . $this->feeduri);
-        #$this->verify_token = $token;
-        #$this->update(); // @fixme
-        
-        try {
-            $callback = common_local_url('feedsubcallback', array('feed' => $this->id));
-            $headers = array('Content-Type: application/x-www-form-urlencoded');
-            $post = array('hub.mode' => 'subscribe',
-                          'hub.callback' => $callback,
-                          'hub.verify' => 'async',
-                          //'hub.verify_token' => $token,
-                          //'hub.lease_seconds' => 0,
-                          'hub.topic' => $this->feeduri);
-            $client = new HTTPClient();
-            $response = $client->post($this->huburi, $headers, $post);
-            if ($response->getStatus() >= 200 && $response->getStatus() < 300) {
-                common_log(LOG_INFO, __METHOD__ . ': sub req ok');
-                return true;
-            } else {
-                common_log(LOG_INFO, __METHOD__ . ': sub req failed');
-                return false;
-            }
-        } catch (Exception $e) {
-            // wtf!
-            common_log(LOG_ERR, __METHOD__ . ": error \"{$e->getMessage()}\" hitting hub $this->huburi subscribing to $this->feeduri");
-            return false;
-        }
-    }
-
-    /**
-     * Read and post notices for updates from the feed.
-     * Currently assumes that all items in the feed are new,
-     * coming from a PuSH hub.
-     *
-     * @param string $xml source of Atom or RSS feed
-     */
-    public function postUpdates($xml)
-    {
-        common_log(LOG_INFO, __METHOD__ . ": packet for \"$this->feeduri\"! $xml");
-        require_once "XML/Feed/Parser.php";
-        $feed = new XML_Feed_Parser($xml, false, false, true);
-        $munger = new FeedMunger($feed);
-        
-        $hits = 0;
-        foreach ($feed as $index => $entry) {
-            // @fixme this might sort in wrong order if we get multiple updates
-            
-            $notice = $munger->notice($index);
-            $notice->profile_id = $this->profile_id;
-            
-            // Double-check for oldies
-            // @fixme this could explode horribly for multiple feeds on a blog. sigh
-            $dupe = new Notice();
-            $dupe->uri = $notice->uri;
-            $dupe->find();
-            if ($dupe->fetch()) {
-                common_log(LOG_WARNING, __METHOD__ . ": tried to save dupe notice for entry {$notice->uri} of feed {$this->feeduri}");
-                continue;
-            }
-            
-            if (Event::handle('StartNoticeSave', array(&$notice))) {
-                $id = $notice->insert();
-                Event::handle('EndNoticeSave', array($notice));
-            }
-            $notice->addToInboxes();
-
-            common_log(LOG_INFO, __METHOD__ . ": saved notice {$notice->id} for entry $index of update to \"{$this->feeduri}\"");
-            $hits++;
-        }
-        if ($hits == 0) {
-            common_log(LOG_INFO, __METHOD__ . ": no updates in packet for \"$this->feeduri\"! $xml");
-        }
-    }
-}
diff --git a/plugins/FeedSub/feedinfo.sql b/plugins/FeedSub/feedinfo.sql
deleted file mode 100644
index e9b53d26e..000000000
--- a/plugins/FeedSub/feedinfo.sql
+++ /dev/null
@@ -1,14 +0,0 @@
-CREATE TABLE `feedinfo` (
-  `id` int(11) NOT NULL auto_increment,
-  `profile_id` int(11) NOT NULL,
-  `feeduri` varchar(255) NOT NULL,
-  `homeuri` varchar(255) NOT NULL,
-  `huburi` varchar(255) NOT NULL,
-  `verify_token` varchar(32) default NULL,
-  `sub_start` datetime default NULL,
-  `sub_end` datetime default NULL,
-  `created` datetime NOT NULL,
-  `lastupdate` datetime NOT NULL,
-  PRIMARY KEY  (`id`),
-  UNIQUE KEY `feedinfo_feeduri_idx` (`feeduri`)
-) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;
diff --git a/plugins/MemcachePlugin.php b/plugins/MemcachePlugin.php
index 2bc4b892b..c5e74fb41 100644
--- a/plugins/MemcachePlugin.php
+++ b/plugins/MemcachePlugin.php
@@ -102,7 +102,7 @@ class MemcachePlugin extends Plugin
      *
      * @param string  &$key     in; Key to use for lookups
      * @param mixed   &$value   in; Value to associate
-     * @param integer &$flag    in; Flag (passed through to Memcache)
+     * @param integer &$flag    in; Flag empty or Cache::COMPRESSED
      * @param integer &$expiry  in; Expiry (passed through to Memcache)
      * @param boolean &$success out; Whether the set was successful
      *
@@ -115,7 +115,7 @@ class MemcachePlugin extends Plugin
         if ($expiry === null) {
             $expiry = $this->defaultExpiry;
         }
-        $success = $this->_conn->set($key, $value, $flag, $expiry);
+        $success = $this->_conn->set($key, $value, $this->flag(intval($flag)), $expiry);
         Event::handle('EndCacheSet', array($key, $value, $flag,
                                            $expiry));
         return false;
@@ -197,6 +197,20 @@ class MemcachePlugin extends Plugin
         }
     }
 
+    /**
+     * Translate general flags to Memcached-specific flags
+     * @param int $flag
+     * @return int
+     */
+    protected function flag($flag)
+    {
+        $out = 0;
+        if ($flag & Cache::COMPRESSED == Cache::COMPRESSED) {
+            $out |= MEMCACHE_COMPRESSED;
+        }
+        return $out;
+    }
+
     function onPluginVersion(&$versions)
     {
         $versions[] = array('name' => 'Memcache',
diff --git a/plugins/OStatus/OStatusPlugin.php b/plugins/OStatus/OStatusPlugin.php
new file mode 100644
index 000000000..8444c3d73
--- /dev/null
+++ b/plugins/OStatus/OStatusPlugin.php
@@ -0,0 +1,276 @@
+<?php
+/*
+StatusNet Plugin: 0.9
+Plugin Name: FeedSub
+Plugin URI: http://status.net/wiki/Feed_subscription
+Description: FeedSub allows subscribing to real-time updates from external feeds supporting PubHubSubbub protocol.
+Version: 0.1
+Author: Brion Vibber <brion@status.net>
+Author URI: http://status.net/
+*/
+
+/*
+ * StatusNet - the distributed open-source microblogging tool
+ * Copyright (C) 2009, StatusNet, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * 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/>.
+ */
+
+/**
+ * @package FeedSubPlugin
+ * @maintainer Brion Vibber <brion@status.net>
+ */
+
+if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
+
+define('FEEDSUB_SERVICE', 100); // fixme -- avoid hardcoding these?
+
+// We bundle the XML_Parse_Feed library...
+set_include_path(get_include_path() . PATH_SEPARATOR . dirname(__FILE__) . '/extlib');
+
+class FeedSubException extends Exception
+{
+}
+
+class OStatusPlugin extends Plugin
+{
+    /**
+     * Hook for RouterInitialized event.
+     *
+     * @param Net_URL_Mapper $m path-to-action mapper
+     * @return boolean hook return
+     */
+    function onRouterInitialized($m)
+    {
+        // Discovery actions
+        $m->connect('.well-known/host-meta',
+                    array('action' => 'hostmeta'));
+        $m->connect('main/webfinger',
+                    array('action' => 'webfinger'));
+        $m->connect('main/ostatus',
+                    array('action' => 'ostatusinit'));
+        $m->connect('main/ostatus?nickname=:nickname',
+                  array('action' => 'ostatusinit'), array('nickname' => '[A-Za-z0-9_-]+'));
+        $m->connect('main/ostatussub',
+                    array('action' => 'ostatussub'));          
+        $m->connect('main/ostatussub',
+                    array('action' => 'ostatussub'), array('feed' => '[A-Za-z0-9\.\/\:]+'));          
+
+        // PuSH actions
+        $m->connect('main/push/hub', array('action' => 'pushhub'));
+
+        $m->connect('main/push/callback/:feed',
+                    array('action' => 'pushcallback'),
+                    array('feed' => '[0-9]+'));
+        $m->connect('settings/feedsub',
+                    array('action' => 'feedsubsettings'));
+
+        // Salmon endpoint
+        $m->connect('main/salmon/user/:id',
+                    array('action' => 'salmon'),
+                    array('id' => '[0-9]+'));
+        $m->connect('main/salmon/group/:id',
+                    array('action' => 'salmongroup'),
+                    array('id' => '[0-9]+'));
+        return true;
+    }
+
+    /**
+     * Set up queue handlers for outgoing hub pushes
+     * @param QueueManager $qm
+     * @return boolean hook return
+     */
+    function onEndInitializeQueueManager(QueueManager $qm)
+    {
+        $qm->connect('hubverify', 'HubVerifyQueueHandler');
+        $qm->connect('hubdistrib', 'HubDistribQueueHandler');
+        $qm->connect('hubout', 'HubOutQueueHandler');
+        return true;
+    }
+
+    /**
+     * Put saved notices into the queue for pubsub distribution.
+     */
+    function onStartEnqueueNotice($notice, &$transports)
+    {
+        $transports[] = 'hubdistrib';
+        return true;
+    }
+
+    /**
+     * Set up a PuSH hub link to our internal link for canonical timeline
+     * Atom feeds for users and groups.
+     */
+    function onStartApiAtom(Action $action)
+    {
+        if ($action instanceof ApiTimelineUserAction) {
+            $salmonAction = 'salmon';
+        } else if ($action instanceof ApiTimelineGroupAction) {
+            $salmonAction = 'salmongroup';
+        } else {
+            return;
+        }
+
+        $id = $action->arg('id');
+        if (strval(intval($id)) === strval($id)) {
+            // Canonical form of id in URL? These are used for OStatus syndication.
+
+            $hub = common_config('ostatus', 'hub');
+            if (empty($hub)) {
+                // Updates will be handled through our internal PuSH hub.
+                $hub = common_local_url('pushhub');
+            }
+            $action->element('link', array('rel' => 'hub',
+                                           'href' => $hub));
+
+            // Also, we'll add in the salmon link
+            $salmon = common_local_url($salmonAction, array('id' => $id));
+            $action->element('link', array('rel' => 'salmon',
+                                           'href' => $salmon));
+        }
+    }
+    
+    /**
+     * Add the feed settings page to the Connect Settings menu
+     *
+     * @param Action &$action The calling page
+     *
+     * @return boolean hook return
+     */
+    function onEndConnectSettingsNav(&$action)
+    {
+        $action_name = $action->trimmed('action');
+
+        $action->menuItem(common_local_url('feedsubsettings'),
+                          _m('Feeds'),
+                          _m('Feed subscription options'),
+                          $action_name === 'feedsubsettings');
+
+        return true;
+    }
+
+    /**
+     * Automatically load the actions and libraries used by the plugin
+     *
+     * @param Class $cls the class
+     *
+     * @return boolean hook return
+     *
+     */
+    function onAutoload($cls)
+    {
+        $base = dirname(__FILE__);
+        $lower = strtolower($cls);
+        $files = array("$base/classes/$cls.php",
+                       "$base/lib/$lower.php");
+        if (substr($lower, -6) == 'action') {
+            $files[] = "$base/actions/" . substr($lower, 0, -6) . ".php";
+        }
+        foreach ($files as $file) {
+            if (file_exists($file)) {
+                include_once $file;
+                return false;
+            }
+        }
+        return true;
+    }
+
+    /**
+     * Add in an OStatus subscribe button
+     */
+    function onStartProfilePageActionsElements($output, $profile)
+    {
+        $cur = common_current_user();
+
+        if (empty($cur)) {
+            // Add an OStatus subscribe
+            $output->elementStart('li', 'entity_subscribe');
+            $url = common_local_url('ostatusinit',
+                                    array('nickname' => $profile->nickname));
+            $output->element('a', array('href' => $url,
+                                        'class' => 'entity_remote_subscribe'),
+                                _m('OStatus'));
+            
+            $output->elementEnd('li');
+        }
+    }
+
+    /**
+     * Check if we've got remote replies to send via Salmon.
+     *
+     * @fixme push webfinger lookup & sending to a background queue
+     * @fixme also detect short-form name for remote subscribees where not ambiguous
+     */
+    function onEndNoticeSave($notice)
+    {
+        $count = preg_match_all('/(\w+\.)*\w+@(\w+\.)*\w+(\w+\-\w+)*\.\w+/', $notice->content, $matches);
+        if ($count) {
+            foreach ($matches[0] as $webfinger) {
+                // Check to see if we've got an actual webfinger
+                $w = new Webfinger;
+
+                $endpoint_uri = '';
+                
+                $result = $w->lookup($webfinger);
+                if (empty($result)) {
+                    continue;
+                }
+                
+                foreach ($result->links as $link) {
+                    if ($link['rel'] == 'salmon') {
+                        $endpoint_uri = $link['href'];
+                    }
+                }
+                
+                if (empty($endpoint_uri)) {
+                    continue;
+                }
+
+                $xml = '<?xml version="1.0" encoding="UTF-8" ?>';
+                $xml .= $notice->asAtomEntry();
+               
+                $salmon = new Salmon();
+                $salmon->post($endpoint_uri, $xml);
+            }
+        }
+    }
+
+    /**
+     * Garbage collect unused feeds on unsubscribe
+     */
+    function onEndUnsubscribe($user, $other)
+    {
+        $profile = Ostatus_profile::staticGet('profile_id', $other->id);
+        if ($feed) {
+            $sub = new Subscription();
+            $sub->subscribed = $other->id;
+            $sub->limit(1);
+            if (!$sub->find(true)) {
+                common_log(LOG_INFO, "Unsubscribing from now-unused feed $feed->feeduri on hub $feed->huburi");
+                $profile->unsubscribe();
+            }
+        }
+        return true;
+    }
+
+    /**
+     * Make sure necessary tables are filled out.
+     */
+    function onCheckSchema() {
+        $schema = Schema::get();
+        $schema->ensureTable('ostatus_profile', Ostatus_profile::schemaDef());
+        $schema->ensureTable('hubsub', HubSub::schemaDef());
+        return true;
+    }
+}
diff --git a/plugins/FeedSub/README b/plugins/OStatus/README
index cbf3adbb9..cbf3adbb9 100644
--- a/plugins/FeedSub/README
+++ b/plugins/OStatus/README
diff --git a/plugins/FeedSub/actions/feedsubsettings.php b/plugins/OStatus/actions/feedsubsettings.php
index 0fba20a39..6933c9bf2 100644
--- a/plugins/FeedSub/actions/feedsubsettings.php
+++ b/plugins/OStatus/actions/feedsubsettings.php
@@ -182,9 +182,9 @@ class FeedSubSettingsAction extends ConnectSettingsAction
         }
         
         $this->munger = $discover->feedMunger();
-        $this->feedinfo = $this->munger->feedInfo();
+        $this->profile = $this->munger->ostatusProfile();
 
-        if ($this->feedinfo->huburi == '') {
+        if ($this->profile->huburi == '' && !common_config('feedsub', 'nohub')) {
             $this->showForm(_m('Feed is not PuSH-enabled; cannot subscribe.'));
             return false;
         }
@@ -196,30 +196,44 @@ class FeedSubSettingsAction extends ConnectSettingsAction
     {
         if ($this->validateFeed()) {
             $this->preview = true;
-            $this->feedinfo = Feedinfo::ensureProfile($this->munger);
+            $this->profile = Ostatus_profile::ensureProfile($this->munger);
+            if (!$this->profile) {
+                throw new ServerException("Feed profile was not saved properly.");
+            }
 
             // If not already in use, subscribe to updates via the hub
-            if ($this->feedinfo->sub_start) {
-                common_log(LOG_INFO, __METHOD__ . ": double the fun! new sub for {$this->feedinfo->feeduri} last subbed {$this->feedinfo->sub_start}");
+            if ($this->profile->sub_start) {
+                common_log(LOG_INFO, __METHOD__ . ": double the fun! new sub for {$this->profile->feeduri} last subbed {$this->profile->sub_start}");
             } else {
-                $ok = $this->feedinfo->subscribe();
+                $ok = $this->profile->subscribe();
                 common_log(LOG_INFO, __METHOD__ . ": sub was $ok");
                 if (!$ok) {
                     $this->showForm(_m('Feed subscription failed! Bad response from hub.'));
                     return;
                 }
             }
-            
+
             // And subscribe the current user to the local profile
             $user = common_current_user();
-            $profile = $this->feedinfo->getProfile();
-            
-            if ($user->isSubscribed($profile)) {
-                $this->showForm(_m('Already subscribed!'));
-            } elseif ($user->subscribeTo($profile)) {
-                $this->showForm(_m('Feed subscribed!'));
+
+            if ($this->profile->isGroup()) {
+                $group = $this->profile->localGroup();
+                if ($user->isMember($group)) {
+                    $this->showForm(_m('Already a member!'));
+                } elseif (Group_member::join($this->profile->group_id, $user->id)) {
+                    $this->showForm(_m('Joined remote group!'));
+                } else {
+                    $this->showForm(_m('Remote group join failed!'));
+                }
             } else {
-                $this->showForm(_m('Feed subscription failed!'));
+                $local = $this->profile->localProfile();
+                if ($user->isSubscribed($local)) {
+                    $this->showForm(_m('Already subscribed!'));
+                } elseif ($user->subscribeTo($local)) {
+                    $this->showForm(_m('Feed subscribed!'));
+                } else {
+                    $this->showForm(_m('Feed subscription failed!'));
+                }
             }
         }
     }
@@ -234,7 +248,7 @@ class FeedSubSettingsAction extends ConnectSettingsAction
 
     function previewFeed()
     {
-        $feedinfo = $this->munger->feedinfo();
+        $profile = $this->munger->ostatusProfile();
         $notice = $this->munger->notice(0, true); // preview
 
         if ($notice) {
diff --git a/plugins/OStatus/actions/hostmeta.php b/plugins/OStatus/actions/hostmeta.php
new file mode 100644
index 000000000..850b8a0fe
--- /dev/null
+++ b/plugins/OStatus/actions/hostmeta.php
@@ -0,0 +1,42 @@
+<?php
+/*
+ * StatusNet - the distributed open-source microblogging tool
+ * Copyright (C) 2010, StatusNet, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * 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/>.
+ */
+
+/**
+ * @package OStatusPlugin
+ * @maintainer James Walker <james@status.net>
+ */
+
+if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
+
+class HostMetaAction extends Action
+{
+
+    function handle()
+    {
+        parent::handle();
+
+        $w = new Webfinger();
+
+
+        $domain = common_config('site', 'server');
+        $url = common_local_url('webfinger');
+        $url.= '?uri={uri}';
+        print $w->getHostMeta($domain, $url);
+    }
+}
diff --git a/plugins/OStatus/actions/ostatusinit.php b/plugins/OStatus/actions/ostatusinit.php
new file mode 100644
index 000000000..bac2c4d43
--- /dev/null
+++ b/plugins/OStatus/actions/ostatusinit.php
@@ -0,0 +1,128 @@
+<?php
+/*
+ * StatusNet - the distributed open-source microblogging tool
+ * Copyright (C) 2010, StatusNet, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * 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/>.
+ */
+
+/**
+ * @package OStatusPlugin
+ * @maintainer James Walker <james@status.net>
+ */
+
+if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
+
+
+class OStatusInitAction extends Action
+{
+
+    var $nickname;
+    var $acct;
+    var $err;
+
+    function prepare($args)
+    {
+        parent::prepare($args);
+
+        if (common_logged_in()) {
+            $this->clientError(_('You can use the local subscription!'));
+            return false;
+        }
+
+        $this->nickname    = $this->trimmed('nickname');
+        $this->acct = $this->trimmed('acct');
+
+        return true;
+    }
+    
+    function handle($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()) {
+                $this->showForm(_('There was a problem with your session token. '.
+                                  'Try again, please.'));
+                return;
+            }
+            $this->ostatusConnect();
+        } else {
+            $this->showForm();
+        }
+    }
+    
+    function showForm($err = null)
+    {
+      $this->err = $err;
+      $this->showPage();
+
+    }
+
+    function showContent()
+    {
+        $this->elementStart('form', array('id' => 'form_ostatus_connect',
+                                          'method' => 'post',
+                                          'class' => 'form_settings',
+                                          'action' => common_local_url('ostatusinit')));
+        $this->elementStart('fieldset');
+        $this->element('legend', _('Subscribe to a remote user'));
+        $this->hidden('token', common_session_token());
+
+        $this->elementStart('ul', 'form_data');
+        $this->elementStart('li');
+        $this->input('nickname', _('User nickname'), $this->nickname,
+                     _('Nickname of the user you want to follow'));
+        $this->elementEnd('li');
+        $this->elementStart('li');
+        $this->input('acct', _('Profile Account'), $this->acct,
+                     _('Your account id (i.e. user@identi.ca)'));
+        $this->elementEnd('li');
+        $this->elementEnd('ul');
+        $this->submit('submit', _('Subscribe'));
+        $this->elementEnd('fieldset');
+        $this->elementEnd('form');
+    }        
+
+    function ostatusConnect()
+    {
+      $w = new Webfinger;
+
+      $result = $w->lookup($this->acct);
+      foreach ($result->links as $link) {
+          if ($link['rel'] == 'http://ostatus.org/schema/1.0/subscribe') {
+              // We found a URL - let's redirect!
+
+              $user = User::staticGet('nickname', $this->nickname);
+
+              $feed_url = common_local_url('ApiTimelineUser',
+                                           array('id' => $user->id,
+                                                 'format' => 'atom'));
+              $url = $w->applyTemplate($link['template'], $feed_url);
+
+              common_redirect($url, 303);
+          }
+
+      }
+      
+    }
+    
+    function title()
+    {
+      return _('OStatus Connect');  
+    }
+  
+}
\ No newline at end of file
diff --git a/plugins/OStatus/actions/ostatussub.php b/plugins/OStatus/actions/ostatussub.php
new file mode 100644
index 000000000..9774286fd
--- /dev/null
+++ b/plugins/OStatus/actions/ostatussub.php
@@ -0,0 +1,226 @@
+<?php
+/*
+ * StatusNet - the distributed open-source microblogging tool
+ * Copyright (C) 2010, StatusNet, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * 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/>.
+ */
+
+/**
+ * @package OStatusPlugin
+ * @maintainer James Walker <james@status.net>
+ */
+
+if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
+
+class OStatusSubAction extends Action
+{
+
+    protected $feedurl;
+    
+    function title()
+    {
+        return _m("OStatus Subscribe");
+    }
+
+    function handle($args)
+    {
+        if ($this->validateFeed()) {
+            $this->showForm();
+        }
+
+        return true;
+
+    }
+
+    function showForm($err = null)
+    {
+        $this->err = $err;
+        $this->showPage();
+    }
+
+
+    function showContent()
+    {
+        $user = common_current_user();
+
+        $profile = $user->getProfile();
+
+        $fuser = null;
+
+        $flink = Foreign_link::getByUserID($user->id, FEEDSUB_SERVICE);
+
+        if (!empty($flink)) {
+            $fuser = $flink->getForeignUser();
+        }
+
+        $this->elementStart('form', array('method' => 'post',
+                                          'id' => 'form_settings_feedsub',
+                                          'class' => 'form_settings',
+                                          'action' =>
+                                          common_local_url('feedsubsettings')));
+
+        $this->hidden('token', common_session_token());
+
+        $this->elementStart('fieldset', array('id' => 'settings_feeds'));
+
+        $this->elementStart('ul', 'form_data');
+        $this->elementStart('li', array('id' => 'settings_twitter_login_button'));
+        $this->input('feedurl', _('Feed URL'), $this->feedurl, _('Enter the URL of a PubSubHubbub-enabled feed'));
+        $this->elementEnd('li');
+        $this->elementEnd('ul');
+
+        $this->submit('subscribe', _m('Subscribe'));
+
+        $this->elementEnd('fieldset');
+
+        $this->elementEnd('form');
+
+        $this->previewFeed();
+    }
+
+    /**
+     * Handle posts to this form
+     *
+     * Based on the button that was pressed, muxes out to other functions
+     * to do the actual task requested.
+     *
+     * All sub-functions reload the form with a message -- success or failure.
+     *
+     * @return void
+     */
+
+    function handlePost()
+    {
+        // CSRF protection
+        $token = $this->trimmed('token');
+        if (!$token || $token != common_session_token()) {
+            $this->showForm(_('There was a problem with your session token. '.
+                              'Try again, please.'));
+            return;
+        }
+
+        if ($this->arg('subscribe')) {
+            $this->saveFeed();
+        } else {
+            $this->showForm(_('Unexpected form submission.'));
+        }
+    }
+
+    
+    /**
+     * Set up and add a feed
+     *
+     * @return boolean true if feed successfully read
+     * Sends you back to input form if not.
+     */
+    function validateFeed()
+    {
+        $feedurl = $this->trimmed('feed');
+        
+        if ($feedurl == '') {
+            $this->showForm(_m('Empty feed URL!'));
+            return;
+        }
+        $this->feedurl = $feedurl;
+        
+        // Get the canonical feed URI and check it
+        try {
+            $discover = new FeedDiscovery();
+            $uri = $discover->discoverFromURL($feedurl);
+        } catch (FeedSubBadURLException $e) {
+            $this->showForm(_m('Invalid URL or could not reach server.'));
+            return false;
+        } catch (FeedSubBadResponseException $e) {
+            $this->showForm(_m('Cannot read feed; server returned error.'));
+            return false;
+        } catch (FeedSubEmptyException $e) {
+            $this->showForm(_m('Cannot read feed; server returned an empty page.'));
+            return false;
+        } catch (FeedSubBadHTMLException $e) {
+            $this->showForm(_m('Bad HTML, could not find feed link.'));
+            return false;
+        } catch (FeedSubNoFeedException $e) {
+            $this->showForm(_m('Could not find a feed linked from this URL.'));
+            return false;
+        } catch (FeedSubUnrecognizedTypeException $e) {
+            $this->showForm(_m('Not a recognized feed type.'));
+            return false;
+        } catch (FeedSubException $e) {
+            // Any new ones we forgot about
+            $this->showForm(_m('Bad feed URL.'));
+            return false;
+        }
+        
+        $this->munger = $discover->feedMunger();
+        $this->profile = $this->munger->ostatusProfile();
+
+        if ($this->profile->huburi == '') {
+            $this->showForm(_m('Feed is not PuSH-enabled; cannot subscribe.'));
+            return false;
+        }
+        
+        return true;
+    }
+
+    function saveFeed()
+    {
+        if ($this->validateFeed()) {
+            $this->preview = true;
+            $this->profile = Ostatus_profile::ensureProfile($this->munger);
+
+            // If not already in use, subscribe to updates via the hub
+            if ($this->profile->sub_start) {
+                common_log(LOG_INFO, __METHOD__ . ": double the fun! new sub for {$this->profile->feeduri} last subbed {$this->profile->sub_start}");
+            } else {
+                $ok = $this->profile->subscribe();
+                common_log(LOG_INFO, __METHOD__ . ": sub was $ok");
+                if (!$ok) {
+                    $this->showForm(_m('Feed subscription failed! Bad response from hub.'));
+                    return;
+                }
+            }
+            
+            // And subscribe the current user to the local profile
+            $user = common_current_user();
+            $profile = $this->profile->getProfile();
+            
+            if ($user->isSubscribed($profile)) {
+                $this->showForm(_m('Already subscribed!'));
+            } elseif ($user->subscribeTo($profile)) {
+                $this->showForm(_m('Feed subscribed!'));
+            } else {
+                $this->showForm(_m('Feed subscription failed!'));
+            }
+        }
+    }
+
+    
+    function previewFeed()
+    {
+        $profile = $this->munger->ostatusProfile();
+        $notice = $this->munger->notice(0, true); // preview
+
+        if ($notice) {
+            $this->element('b', null, 'Preview of latest post from this feed:');
+
+            $item = new NoticeList($notice, $this);
+            $item->show();
+        } else {
+            $this->element('b', null, 'No posts in this feed yet.');
+        }
+    }
+
+
+}
\ No newline at end of file
diff --git a/plugins/FeedSub/actions/feedsubcallback.php b/plugins/OStatus/actions/pushcallback.php
index 0c4280c1f..2601a377a 100644
--- a/plugins/FeedSub/actions/feedsubcallback.php
+++ b/plugins/OStatus/actions/pushcallback.php
@@ -25,7 +25,7 @@
 if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
 
 
-class FeedSubCallbackAction extends Action
+class PushCallbackAction extends Action
 {
     function handle()
     {
@@ -48,13 +48,18 @@ class FeedSubCallbackAction extends Action
             throw new ServerException('Empty or invalid feed id', 400);
         }
 
-        $feedinfo = Feedinfo::staticGet('id', $feedid);
-        if (!$feedinfo) {
-            throw new ServerException('Unknown feed id ' . $feedid, 400);
+        $profile = Ostatus_profile::staticGet('id', $feedid);
+        if (!$profile) {
+            throw new ServerException('Unknown OStatus/PuSH feed id ' . $feedid, 400);
         }
-        
+
+        $hmac = '';
+        if (isset($_SERVER['HTTP_X_HUB_SIGNATURE'])) {
+            $hmac = $_SERVER['HTTP_X_HUB_SIGNATURE'];
+        }
+
         $post = file_get_contents('php://input');
-        $feedinfo->postUpdates($post);
+        $profile->postUpdates($post, $hmac);
     }
     
     /**
@@ -73,28 +78,30 @@ class FeedSubCallbackAction extends Action
             throw new ServerException("Bogus hub callback: bad mode", 404);
         }
         
-        $feedinfo = Feedinfo::staticGet('feeduri', $topic);
-        if (!$feedinfo) {
+        $profile = Ostatus_profile::staticGet('feeduri', $topic);
+        if (!$profile) {
             common_log(LOG_WARNING, __METHOD__ . ": bogus hub callback for unknown feed $topic");
             throw new ServerException("Bogus hub callback: unknown feed", 404);
         }
 
-        # Can't currently set the token in our sub api
-        #if ($feedinfo->verify_token !== $verify_token) {
-        #    common_log(LOG_WARNING, __METHOD__ . ": bogus hub callback with bad token \"$verify_token\" for feed $topic");
-        #    throw new ServerError("Bogus hub callback: bad token", 404);
-        #}
-        
+        if ($profile->verify_token !== $verify_token) {
+            common_log(LOG_WARNING, __METHOD__ . ": bogus hub callback with bad token \"$verify_token\" for feed $topic");
+            throw new ServerError("Bogus hub callback: bad token", 404);
+        }
+
+        if ($mode != $profile->sub_state) {
+            common_log(LOG_WARNING, __METHOD__ . ": bogus hub callback with bad mode \"$mode\" for feed $topic in state \"{$profile->sub_state}\"");
+            throw new ServerException("Bogus hub callback: mode doesn't match subscription state.", 404);
+        }
+
         // OK!
-        common_log(LOG_INFO, __METHOD__ . ': sub confirmed');
-        $feedinfo->sub_start = common_sql_date(time());
-        if ($lease_seconds > 0) {
-            $feedinfo->sub_end = common_sql_date(time() + $lease_seconds);
+        if ($mode == 'subscribe') {
+            common_log(LOG_INFO, __METHOD__ . ': sub confirmed');
+            $profile->confirmSubscribe($lease_seconds);
         } else {
-            $feedinfo->sub_end = null;
+            common_log(LOG_INFO, __METHOD__ . ": unsub confirmed; deleting sub record for $topic");
+            $profile->confirmUnsubscribe();
         }
-        $feedinfo->update();
-        
         print $challenge;
     }
 }
diff --git a/plugins/OStatus/actions/pushhub.php b/plugins/OStatus/actions/pushhub.php
new file mode 100644
index 000000000..901c18f70
--- /dev/null
+++ b/plugins/OStatus/actions/pushhub.php
@@ -0,0 +1,176 @@
+<?php
+/*
+ * StatusNet - the distributed open-source microblogging tool
+ * Copyright (C) 2010, StatusNet, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * Integrated PuSH hub; lets us only ping them what need it.
+ * @package Hub
+ * @maintainer Brion Vibber <brion@status.net>
+ */
+
+/**
+
+
+Things to consider...
+* should we purge incomplete subscriptions that never get a verification pingback?
+* when can we send subscription renewal checks?
+    - at next send time probably ok
+* when can we handle trimming of subscriptions?
+    - at next send time probably ok
+* should we keep a fail count?
+
+*/
+
+
+class PushHubAction extends Action
+{
+    function arg($arg, $def=null)
+    {
+        // PHP converts '.'s in incoming var names to '_'s.
+        // It also merges multiple values, which'll break hub.verify and hub.topic for publishing
+        // @fixme handle multiple args
+        $arg = str_replace('.', '_', $arg);
+        return parent::arg($arg, $def);
+    }
+
+    function prepare($args)
+    {
+        StatusNet::setApi(true); // reduce exception reports to aid in debugging
+        return parent::prepare($args);
+    }
+
+    function handle()
+    {
+        $mode = $this->trimmed('hub.mode');
+        switch ($mode) {
+        case "subscribe":
+            $this->subscribe();
+            break;
+        case "unsubscribe":
+            $this->unsubscribe();
+            break;
+        case "publish":
+            throw new ServerException("Publishing outside feeds not supported.", 400);
+        default:
+            throw new ServerException("Unrecognized mode '$mode'.", 400);
+        }
+    }
+
+    /**
+     * Process a PuSH feed subscription request.
+     *
+     * HTTP return codes:
+     *   202 Accepted - request saved and awaiting verification
+     *   204 No Content - already subscribed
+     *   403 Forbidden - rejecting this (not specifically spec'd)
+     */
+    function subscribe()
+    {
+        $feed = $this->argUrl('hub.topic');
+        $callback = $this->argUrl('hub.callback');
+
+        common_log(LOG_DEBUG, __METHOD__ . ": checking sub'd to $feed $callback");
+        if ($this->getSub($feed, $callback)) {
+            // Already subscribed; return 204 per spec.
+            header('HTTP/1.1 204 No Content');
+            common_log(LOG_DEBUG, __METHOD__ . ': already subscribed');
+            return;
+        }
+
+        common_log(LOG_DEBUG, __METHOD__ . ': setting up');
+        $sub = new HubSub();
+        $sub->topic = $feed;
+        $sub->callback = $callback;
+        $sub->secret = $this->arg('hub.secret', null);
+        $sub->setLease(intval($this->arg('hub.lease_seconds')));
+
+        // @fixme check for feeds we don't manage
+        // @fixme check the verification mode, might want a return immediately?
+
+        common_log(LOG_DEBUG, __METHOD__ . ': inserting');
+        $ok = $sub->insert();
+        
+        if (!$ok) {
+            throw new ServerException("Failed to save subscription record", 500);
+        }
+
+        // @fixme check errors ;)
+
+        $data = array('sub' => $sub, 'mode' => 'subscribe');
+        $qm = QueueManager::get();
+        $qm->enqueue($data, 'hubverify');
+        
+        header('HTTP/1.1 202 Accepted');
+        common_log(LOG_DEBUG, __METHOD__ . ': done');
+    }
+
+    /**
+     * Process a PuSH feed unsubscription request.
+     *
+     * HTTP return codes:
+     *   202 Accepted - request saved and awaiting verification
+     *   204 No Content - already subscribed
+     *   400 Bad Request - invalid params or rejected feed
+     */
+    function unsubscribe()
+    {
+        $feed = $this->argUrl('hub.topic');
+        $callback = $this->argUrl('hub.callback');
+        $sub = $this->getSub($feed, $callback);
+        
+        if ($sub) {
+            if ($sub->verify('unsubscribe')) {
+                $sub->delete();
+                common_log(LOG_INFO, "PuSH unsubscribed $feed for $callback");
+            } else {
+                throw new ServerException("Failed PuSH unsubscription: verification failed! $feed for $callback");
+            }
+        } else {
+            throw new ServerException("Failed PuSH unsubscription: not subscribed! $feed for $callback");
+        }
+    }
+
+    /**
+     * Grab and validate a URL from POST parameters.
+     * @throws ServerException for malformed or non-http/https URLs
+     */
+    protected function argUrl($arg)
+    {
+        $url = $this->arg($arg);
+        $params = array('domain_check' => false, // otherwise breaks my local tests :P
+                        'allowed_schemes' => array('http', 'https'));
+        if (Validate::uri($url, $params)) {
+            return $url;
+        } else {
+            throw new ServerException("Invalid URL passed for $arg: '$url'", 400);
+        }
+    }
+
+    /**
+     * Get HubSub subscription record for a given feed & subscriber.
+     *
+     * @param string $feed
+     * @param string $callback
+     * @return mixed HubSub or false
+     */
+    protected function getSub($feed, $callback)
+    {
+        return HubSub::staticGet($feed, $callback);
+    }
+}
+
diff --git a/plugins/OStatus/actions/salmon.php b/plugins/OStatus/actions/salmon.php
new file mode 100644
index 000000000..b616027a9
--- /dev/null
+++ b/plugins/OStatus/actions/salmon.php
@@ -0,0 +1,81 @@
+<?php
+/*
+ * StatusNet - the distributed open-source microblogging tool
+ * Copyright (C) 2010, StatusNet, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * 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/>.
+ */
+
+/**
+ * @package OStatusPlugin
+ * @author James Walker <james@status.net>
+ */
+
+if (!defined('STATUSNET')) {
+    exit(1);
+}
+
+class SalmonAction extends Action
+{
+    var $user     = null;
+    var $xml      = null;
+    var $activity = null;
+
+    function prepare($args)
+    {
+        if ($_SERVER['REQUEST_METHOD'] != 'POST') {
+            $this->clientError(_('This method requires a POST.'));
+        }
+
+        if ($_SERVER['CONTENT_TYPE'] != 'application/atom+xml') {
+            $this->clientError(_('Salmon requires application/atom+xml'));
+        }
+
+        $id = $this->trimmed('id');
+
+        if (!$id) {
+            $this->clientError(_('No ID.'));
+        }
+
+        $this->user = User::staticGet($id);
+
+        if (empty($this->user)) {
+            $this->clientError(_('No such user.'));
+        }
+
+        $xml = file_get_contents('php://input');
+
+        $dom = DOMDocument::loadXML($xml);
+
+        // XXX: check that document element is Atom entry
+        // XXX: check the signature
+
+        $this->act = Activity::fromAtomEntry($dom->documentElement);
+    }
+
+    function handle($args)
+    {
+        common_log(LOG_DEBUG, 'Salmon: incoming post for user: '. $user_id);
+
+        // TODO : Insert new $xml -> notice code
+
+        switch ($this->act->verb)
+        {
+        case Activity::POST:
+        case Activity::SHARE:
+        case Activity::FAVORITE:
+        case Activity::FOLLOW:
+        }
+    }
+}
diff --git a/plugins/OStatus/actions/webfinger.php b/plugins/OStatus/actions/webfinger.php
new file mode 100644
index 000000000..75ba16638
--- /dev/null
+++ b/plugins/OStatus/actions/webfinger.php
@@ -0,0 +1,77 @@
+<?php
+/*
+ * StatusNet - the distributed open-source microblogging tool
+ * Copyright (C) 2010, StatusNet, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * 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/>.
+ */
+
+/**
+ * @package OStatusPlugin
+ * @maintainer James Walker <james@status.net>
+ */
+
+if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
+
+class WebfingerAction extends Action
+{
+
+    public $uri;
+
+    function prepare($args)
+    {
+        parent::prepare($args);
+
+        $this->uri = $this->trimmed('uri');
+
+        return true;
+    }
+        
+    function handle()
+    {
+        $acct = Webfinger::normalize($this->uri);
+
+        $xrd = new XRD();
+
+        list($nick, $domain) = explode('@', urldecode($acct));
+        $nick = common_canonical_nickname($nick);
+
+        $this->user = User::staticGet('nickname', $nick);
+        if (!$this->user) {
+            $this->clientError(_('No such user.'), 404);
+            return false;
+        }
+
+        $xrd->subject = $this->uri;
+        $xrd->alias[] = common_profile_url($nick);
+        $xrd->links[] = array('rel' => 'http://webfinger.net/rel/profile-page',
+                              'type' => 'text/html',
+                              'href' => common_profile_url($nick));
+
+        $salmon_url = common_local_url('salmon',
+                                       array('id' => $this->user->id));
+
+        $xrd->links[] = array('rel' => 'salmon',
+                              'href' => $salmon_url);
+        
+        // TODO - finalize where the redirect should go on the publisher
+        $url = common_local_url('ostatussub') . '?feed={uri}';
+        $xrd->links[] = array('rel' => 'http://ostatus.org/schema/1.0/subscribe',
+                              'template' => $url );
+
+        header('Content-type: text/xml');
+        print $xrd->toXML();
+    }
+
+}
diff --git a/plugins/OStatus/classes/HubSub.php b/plugins/OStatus/classes/HubSub.php
new file mode 100644
index 000000000..7071ee5b4
--- /dev/null
+++ b/plugins/OStatus/classes/HubSub.php
@@ -0,0 +1,272 @@
+<?php
+/*
+ * StatusNet - the distributed open-source microblogging tool
+ * Copyright (C) 2010, StatusNet, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * 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/>.
+ */
+
+/**
+ * PuSH feed subscription record
+ * @package Hub
+ * @author Brion Vibber <brion@status.net>
+ */
+class HubSub extends Memcached_DataObject
+{
+    public $__table = 'hubsub';
+
+    public $hashkey; // sha1(topic . '|' . $callback); (topic, callback) key is too long for myisam in utf8
+    public $topic;
+    public $callback;
+    public $secret;
+    public $verify_token;
+    public $challenge;
+    public $lease;
+    public $sub_start;
+    public $sub_end;
+    public $created;
+
+    public /*static*/ function staticGet($topic, $callback)
+    {
+        return parent::staticGet(__CLASS__, 'hashkey', self::hashkey($topic, $callback));
+    }
+
+    protected static function hashkey($topic, $callback)
+    {
+        return sha1($topic . '|' . $callback);
+    }
+
+    /**
+     * return table definition for DB_DataObject
+     *
+     * DB_DataObject needs to know something about the table to manipulate
+     * instances. This method provides all the DB_DataObject needs to know.
+     *
+     * @return array array of column definitions
+     */
+
+    function table()
+    {
+        return array('hashkey' => DB_DATAOBJECT_STR + DB_DATAOBJECT_NOTNULL,
+                     'topic' => DB_DATAOBJECT_STR + DB_DATAOBJECT_NOTNULL,
+                     'callback' => DB_DATAOBJECT_STR + DB_DATAOBJECT_NOTNULL,
+                     'secret' => DB_DATAOBJECT_STR,
+                     'verify_token' => DB_DATAOBJECT_STR,
+                     'challenge' => DB_DATAOBJECT_STR,
+                     'lease' =>  DB_DATAOBJECT_INT,
+                     'sub_start' => DB_DATAOBJECT_STR + DB_DATAOBJECT_DATE + DB_DATAOBJECT_TIME,
+                     'sub_end' => DB_DATAOBJECT_STR + DB_DATAOBJECT_DATE + DB_DATAOBJECT_TIME,
+                     'created' => DB_DATAOBJECT_STR + DB_DATAOBJECT_DATE + DB_DATAOBJECT_TIME + DB_DATAOBJECT_NOTNULL);
+    }
+
+    static function schemaDef()
+    {
+        return array(new ColumnDef('hashkey', 'char',
+                                   /*size*/40,
+                                   /*nullable*/false,
+                                   /*key*/'PRI'),
+                     new ColumnDef('topic', 'varchar',
+                                   /*size*/255,
+                                   /*nullable*/false,
+                                   /*key*/'KEY'),
+                     new ColumnDef('callback', 'varchar',
+                                   255, false),
+                     new ColumnDef('secret', 'text',
+                                   null, true),
+                     new ColumnDef('verify_token', 'text',
+                                   null, true),
+                     new ColumnDef('challenge', 'varchar',
+                                   32, true),
+                     new ColumnDef('lease', 'int',
+                                   null, true),
+                     new ColumnDef('sub_start', 'datetime',
+                                   null, true),
+                     new ColumnDef('sub_end', 'datetime',
+                                   null, true),
+                     new ColumnDef('created', 'datetime',
+                                   null, false));
+    }
+
+    function keys()
+    {
+        return array_keys($this->keyTypes());
+    }
+
+    function sequenceKeys()
+    {
+        return array(false, false, false);
+    }
+
+    /**
+     * return key definitions for DB_DataObject
+     *
+     * DB_DataObject needs to know about keys that the table has; this function
+     * defines them.
+     *
+     * @return array key definitions
+     */
+
+    function keyTypes()
+    {
+        return array('hashkey' => 'K');
+    }
+
+    /**
+     * Validates a requested lease length, sets length plus
+     * subscription start & end dates.
+     *
+     * Does not save to database -- use before insert() or update().
+     *
+     * @param int $length in seconds
+     */
+    function setLease($length)
+    {
+        assert(is_int($length));
+
+        $min = 86400;
+        $max = 86400 * 30;
+
+        if ($length == 0) {
+            // We want to garbage collect dead subscriptions!
+            $length = $max;
+        } elseif( $length < $min) {
+            $length = $min;
+        } else if ($length > $max) {
+            $length = $max;
+        }
+
+        $this->lease = $length;
+        $this->start_sub = common_sql_now();
+        $this->end_sub = common_sql_date(time() + $length);
+    }
+
+    /**
+     * Send a verification ping to subscriber
+     * @param string $mode 'subscribe' or 'unsubscribe'
+     */
+    function verify($mode)
+    {
+        assert($mode == 'subscribe' || $mode == 'unsubscribe');
+
+        // Is this needed? data object fun...
+        $clone = clone($this);
+        $clone->challenge = common_good_rand(16);
+        $clone->update($this);
+        $this->challenge = $clone->challenge;
+        unset($clone);
+
+        $params = array('hub.mode' => $mode,
+                        'hub.topic' => $this->topic,
+                        'hub.challenge' => $this->challenge);
+        if ($mode == 'subscribe') {
+            $params['hub.lease_seconds'] = $this->lease;
+        }
+        if ($this->verify_token) {
+            $params['hub.verify_token'] = $this->verify_token;
+        }
+        $url = $this->callback . '?' . http_build_query($params, '', '&'); // @fixme ugly urls
+
+        try {
+            $request = new HTTPClient();
+            $response = $request->get($url);
+            $status = $response->getStatus();
+
+            if ($status >= 200 && $status < 300) {
+                $fail = false;
+            } else {
+                // @fixme how can we schedule a second attempt?
+                // Or should we?
+                $fail = "Returned HTTP $status";
+            }
+        } catch (Exception $e) {
+            $fail = $e->getMessage();
+        }
+        if ($fail) {
+            // @fixme how can we schedule a second attempt?
+            // or save a fail count?
+            // Or should we?
+            common_log(LOG_ERR, "Failed to verify $mode for $this->topic at $this->callback: $fail");
+            return false;
+        } else {
+            if ($mode == 'subscribe') {
+                // Establish or renew the subscription!
+                // This seems unnecessary... dataobject fun!
+                $clone = clone($this);
+                $clone->challenge = null;
+                $clone->setLease($this->lease);
+                $clone->update($this);
+                unset($clone);
+
+                $this->challenge = null;
+                $this->setLease($this->lease);
+                common_log(LOG_ERR, "Verified $mode of $this->callback:$this->topic for $this->lease seconds");
+            } else if ($mode == 'unsubscribe') {
+                common_log(LOG_ERR, "Verified $mode of $this->callback:$this->topic");
+                $this->delete();
+            }
+            return true;
+        }
+    }
+
+    /**
+     * Insert wrapper; transparently set the hash key from topic and callback columns.
+     * @return boolean success
+     */
+    function insert()
+    {
+        $this->hashkey = self::hashkey($this->topic, $this->callback);
+        return parent::insert();
+    }
+
+    /**
+     * Send a 'fat ping' to the subscriber's callback endpoint
+     * containing the given Atom feed chunk.
+     *
+     * Determination of which items to send should be done at
+     * a higher level; don't just shove in a complete feed!
+     *
+     * @param string $atom well-formed Atom feed
+     */
+    function push($atom)
+    {
+        $headers = array('Content-Type: application/atom+xml');
+        if ($this->secret) {
+            $hmac = hash_hmac('sha1', $atom, $this->secret);
+            $headers[] = "X-Hub-Signature: sha1=$hmac";
+        } else {
+            $hmac = '(none)';
+        }
+        common_log(LOG_INFO, "About to push feed to $this->callback for $this->topic, HMAC $hmac");
+        try {
+            $request = new HTTPClient();
+            $request->setBody($atom);
+            $response = $request->post($this->callback, $headers);
+
+            if ($response->isOk()) {
+                return true;
+            }
+            common_log(LOG_ERR, "Error sending PuSH content " .
+                                "to $this->callback for $this->topic: " .
+                                $response->getStatus());
+            return false;
+
+        } catch (Exception $e) {
+            common_log(LOG_ERR, "Error sending PuSH content " .
+                                "to $this->callback for $this->topic: " .
+                                $e->getMessage());
+            return false;
+        }
+    }
+}
+
diff --git a/plugins/OStatus/classes/Ostatus_profile.php b/plugins/OStatus/classes/Ostatus_profile.php
new file mode 100644
index 000000000..733d8843b
--- /dev/null
+++ b/plugins/OStatus/classes/Ostatus_profile.php
@@ -0,0 +1,644 @@
+<?php
+/*
+ * StatusNet - the distributed open-source microblogging tool
+ * Copyright (C) 2009-2010, StatusNet, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * 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/>.
+ */
+
+/**
+ * @package FeedSubPlugin
+ * @maintainer Brion Vibber <brion@status.net>
+ */
+
+/*
+PuSH subscription flow:
+
+    $profile->subscribe()
+        generate random verification token
+            save to verify_token
+        sends a sub request to the hub...
+    
+    main/push/callback
+        hub sends confirmation back to us via GET
+        We verify the request, then echo back the challenge.
+        On our end, we save the time we subscribed and the lease expiration
+    
+    main/push/callback
+        hub sends us updates via POST
+    
+*/
+
+class FeedDBException extends FeedSubException
+{
+    public $obj;
+
+    function __construct($obj)
+    {
+        parent::__construct('Database insert failure');
+        $this->obj = $obj;
+    }
+}
+
+class Ostatus_profile extends Memcached_DataObject
+{
+    public $__table = 'ostatus_profile';
+
+    public $id;
+    public $profile_id;
+    public $group_id;
+
+    public $feeduri;
+    public $homeuri;
+
+    // PuSH subscription data
+    public $huburi;
+    public $secret;
+    public $verify_token;
+    public $sub_state; // subscribe, active, unsubscribe
+    public $sub_start;
+    public $sub_end;
+
+    public $salmonuri;
+
+    public $created;
+    public $lastupdate;
+
+
+    public /*static*/ function staticGet($k, $v=null)
+    {
+        return parent::staticGet(__CLASS__, $k, $v);
+    }
+
+    /**
+     * return table definition for DB_DataObject
+     *
+     * DB_DataObject needs to know something about the table to manipulate
+     * instances. This method provides all the DB_DataObject needs to know.
+     *
+     * @return array array of column definitions
+     */
+
+    function table()
+    {
+        return array('id' => DB_DATAOBJECT_INT + DB_DATAOBJECT_NOTNULL,
+                     'profile_id' => DB_DATAOBJECT_INT,
+                     'group_id' => DB_DATAOBJECT_INT,
+                     'feeduri' => DB_DATAOBJECT_STR + DB_DATAOBJECT_NOTNULL,
+                     'homeuri' => DB_DATAOBJECT_STR + DB_DATAOBJECT_NOTNULL,
+                     'huburi' =>  DB_DATAOBJECT_STR,
+                     'secret' => DB_DATAOBJECT_STR,
+                     'verify_token' => DB_DATAOBJECT_STR,
+                     'sub_state' => DB_DATAOBJECT_STR,
+                     'sub_start' => DB_DATAOBJECT_STR + DB_DATAOBJECT_DATE + DB_DATAOBJECT_TIME,
+                     'sub_end' => DB_DATAOBJECT_STR + DB_DATAOBJECT_DATE + DB_DATAOBJECT_TIME,
+                     'salmonuri' =>  DB_DATAOBJECT_STR,
+                     'created' => DB_DATAOBJECT_STR + DB_DATAOBJECT_DATE + DB_DATAOBJECT_TIME + DB_DATAOBJECT_NOTNULL,
+                     'lastupdate' => DB_DATAOBJECT_STR + DB_DATAOBJECT_DATE + DB_DATAOBJECT_TIME + DB_DATAOBJECT_NOTNULL);
+    }
+    
+    static function schemaDef()
+    {
+        return array(new ColumnDef('id', 'integer',
+                                   /*size*/ null,
+                                   /*nullable*/ false,
+                                   /*key*/ 'PRI',
+                                   /*default*/ '0',
+                                   /*extra*/ null,
+                                   /*auto_increment*/ true),
+                     new ColumnDef('profile_id', 'integer',
+                                   null, true, 'UNI'),
+                     new ColumnDef('group_id', 'integer',
+                                   null, true, 'UNI'),
+                     new ColumnDef('feeduri', 'varchar',
+                                   255, false, 'UNI'),
+                     new ColumnDef('homeuri', 'varchar',
+                                   255, false),
+                     new ColumnDef('huburi', 'text',
+                                   null, true),
+                     new ColumnDef('verify_token', 'varchar',
+                                   32, true),
+                     new ColumnDef('secret', 'varchar',
+                                   64, true),
+                     new ColumnDef('sub_state', "enum('subscribe','active','unsubscribe')",
+                                   null, true),
+                     new ColumnDef('sub_start', 'datetime',
+                                   null, true),
+                     new ColumnDef('sub_end', 'datetime',
+                                   null, true),
+                     new ColumnDef('salmonuri', 'text',
+                                   null, true),
+                     new ColumnDef('created', 'datetime',
+                                   null, false),
+                     new ColumnDef('lastupdate', 'datetime',
+                                   null, false));
+    }
+
+    /**
+     * return key definitions for DB_DataObject
+     *
+     * DB_DataObject needs to know about keys that the table has; this function
+     * defines them.
+     *
+     * @return array key definitions
+     */
+
+    function keys()
+    {
+        return array_keys($this->keyTypes());
+    }
+
+    /**
+     * return key definitions for Memcached_DataObject
+     *
+     * Our caching system uses the same key definitions, but uses a different
+     * method to get them.
+     *
+     * @return array key definitions
+     */
+
+    function keyTypes()
+    {
+        return array('id' => 'K', 'profile_id' => 'U', 'group_id' => 'U', 'feeduri' => 'U');
+    }
+
+    function sequenceKey()
+    {
+        return array('id', true, false);
+    }
+
+    /**
+     * Fetch the StatusNet-side profile for this feed
+     * @return Profile
+     */
+    public function localProfile()
+    {
+        if ($this->profile_id) {
+            return Profile::staticGet('id', $this->profile_id);
+        }
+        return null;
+    }
+
+    /**
+     * Fetch the StatusNet-side profile for this feed
+     * @return Profile
+     */
+    public function localGroup()
+    {
+        if ($this->group_id) {
+            return User_group::staticGet('id', $this->group_id);
+        }
+        return null;
+    }
+
+    /**
+     * @param FeedMunger $munger
+     * @param boolean $isGroup is this a group record?
+     * @return Ostatus_profile
+     */
+    public static function ensureProfile($munger)
+    {
+        $profile = $munger->ostatusProfile();
+
+        $current = self::staticGet('feeduri', $profile->feeduri);
+        if ($current) {
+            // @fixme we should probably update info as necessary
+            return $current;
+        }
+
+        $profile->query('BEGIN');
+
+        // Awful hack! Awful hack!
+        $profile->verify = common_good_rand(16);
+        $profile->secret = common_good_rand(32);
+
+        try {
+            $local = $munger->profile();
+
+            if ($entity->isGroup()) {
+                $group = new User_group();
+                $group->nickname = $local->nickname . '@remote'; // @fixme
+                $group->fullname = $local->fullname;
+                $group->homepage = $local->homepage;
+                $group->location = $local->location;
+                $group->created = $local->created;
+                $group->insert();
+                if (empty($result)) {
+                    throw new FeedDBException($group);
+                }
+                $profile->group_id = $group->id;
+            } else {
+                $result = $local->insert();
+                if (empty($result)) {
+                    throw new FeedDBException($local);
+                }
+                $profile->profile_id = $local->id;
+            }
+
+            $profile->created = sql_common_date();
+            $profile->lastupdate = sql_common_date();
+            $result = $profile->insert();
+            if (empty($result)) {
+                throw new FeedDBException($profile);
+            }
+
+            $entity->query('COMMIT');
+        } catch (FeedDBException $e) {
+            common_log_db_error($e->obj, 'INSERT', __FILE__);
+            $entity->query('ROLLBACK');
+            return false;
+        }
+
+        $avatar = $munger->getAvatar();
+        if ($avatar) {
+            try {
+                $this->updateAvatar($avatar);
+            } catch (Exception $e) {
+                common_log(LOG_ERR, "Exception setting OStatus avatar: " .
+                                    $e->getMessage());
+            }
+        }
+
+        return $entity;
+    }
+
+    /**
+     * Download and update given avatar image
+     * @param string $url
+     * @throws Exception in various failure cases
+     */
+    public function updateAvatar($url)
+    {
+        // @fixme this should be better encapsulated
+        // ripped from oauthstore.php (for old OMB client)
+        $temp_filename = tempnam(sys_get_temp_dir(), 'listener_avatar');
+        copy($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($filename));
+        if ($this->isGroup()) {
+            $group = $this->localGroup();
+            $group->setOriginal($filename);
+        } else {
+            $profile = $this->localProfile();
+            $profile->setOriginal($filename);
+        }
+    }
+
+    /**
+     * Returns an XML string fragment with profile information as an
+     * Activity Streams noun object with the given element type.
+     *
+     * Assumes that 'activity' namespace has been previously defined.
+     *
+     * @param string $element one of 'actor', 'subject', 'object', 'target'
+     * @return string
+     */
+    function asActivityNoun($element)
+    {
+        $xs = new XMLStringer(true);
+
+        $avatarHref = Avatar::defaultImage(AVATAR_PROFILE_SIZE);
+        $avatarType = 'image/png';
+        if ($this->isGroup()) {
+            $type = 'http://activitystrea.ms/schema/1.0/group';
+            $self = $this->localGroup();
+
+            // @fixme put a standard getAvatar() interface on groups too
+            if ($self->homepage_logo) {
+                $avatarHref = $self->homepage_logo;
+                $map = array('png' => 'image/png',
+                             'jpg' => 'image/jpeg',
+                             'jpeg' => 'image/jpeg',
+                             'gif' => 'image/gif');
+                $extension = pathinfo(parse_url($avatarHref, PHP_URL_PATH), PATHINFO_EXTENSION);
+                if (isset($map[$extension])) {
+                    $avatarType = $map[$extension];
+                }
+            }
+        } else {
+            $type = 'http://activitystrea.ms/schema/1.0/person';
+            $self = $this->localProfile();
+            $avatar = $self->getAvatar(AVATAR_PROFILE_SIZE);
+            if ($avatar) {
+                $avatarHref = $avatar->
+                $avatarType = $avatar->mediatype;
+            }
+        }
+        $xs->elementStart('activity:' . $element);
+        $xs->element(
+            'activity:object-type',
+            null,
+            $type
+        );
+        $xs->element(
+            'id',
+            null,
+            $this->homeuri); // ?
+        $xs->element('title', null, $self->getBestName());
+
+        $xs->element(
+            'link', array(
+                'type' => $avatarType,
+                'href' => $avatarHref
+            ),
+            ''
+        );
+
+        $xs->elementEnd('activity:' . $element);
+
+        return $xs->getString();
+    }
+
+    /**
+     * Damn dirty hack!
+     */
+    function isGroup()
+    {
+        return (strpos($this->feeduri, '/groups/') !== false);
+    }
+
+    /**
+     * Send a subscription request to the hub for this feed.
+     * The hub will later send us a confirmation POST to /main/push/callback.
+     *
+     * @return bool true on success, false on failure
+     */
+    public function subscribe($mode='subscribe')
+    {
+        if (common_config('feedsub', 'nohub')) {
+            // Fake it! We're just testing remote feeds w/o hubs.
+            return true;
+        }
+        // @fixme use the verification token
+        #$token = md5(mt_rand() . ':' . $this->feeduri);
+        #$this->verify_token = $token;
+        #$this->update(); // @fixme
+        try {
+            $callback = common_local_url('pushcallback', array('feed' => $this->id));
+            $headers = array('Content-Type: application/x-www-form-urlencoded');
+            $post = array('hub.mode' => $mode,
+                          'hub.callback' => $callback,
+                          'hub.verify' => 'async',
+                          'hub.verify_token' => $this->verify_token,
+                          'hub.secret' => $this->secret,
+                          //'hub.lease_seconds' => 0,
+                          'hub.topic' => $this->feeduri);
+            $client = new HTTPClient();
+            $response = $client->post($this->huburi, $headers, $post);
+            $status = $response->getStatus();
+            if ($status == 202) {
+                common_log(LOG_INFO, __METHOD__ . ': sub req ok, awaiting verification callback');
+                return true;
+            } else if ($status == 204) {
+                common_log(LOG_INFO, __METHOD__ . ': sub req ok and verified');
+                return true;
+            } else if ($status >= 200 && $status < 300) {
+                common_log(LOG_ERR, __METHOD__ . ": sub req returned unexpected HTTP $status: " . $response->getBody());
+                return false;
+            } else {
+                common_log(LOG_ERR, __METHOD__ . ": sub req failed with HTTP $status: " . $response->getBody());
+                return false;
+            }
+        } catch (Exception $e) {
+            // wtf!
+            common_log(LOG_ERR, __METHOD__ . ": error \"{$e->getMessage()}\" hitting hub $this->huburi subscribing to $this->feeduri");
+            return false;
+        }
+    }
+
+    /**
+     * Save PuSH subscription confirmation.
+     * Sets approximate lease start and end times and finalizes state.
+     *
+     * @param int $lease_seconds provided hub.lease_seconds parameter, if given
+     */
+    public function confirmSubscribe($lease_seconds=0)
+    {
+        $original = clone($this);
+
+        $this->sub_state = 'active';
+        $this->sub_start = common_sql_date(time());
+        if ($lease_seconds > 0) {
+            $this->sub_end = common_sql_date(time() + $lease_seconds);
+        } else {
+            $this->sub_end = null;
+        }
+        $this->lastupdate = common_sql_date();
+
+        return $this->update($original);
+    }
+
+    /**
+     * Save PuSH unsubscription confirmation.
+     * Wipes active PuSH sub info and resets state.
+     */
+    public function confirmUnsubscribe()
+    {
+        $original = clone($this);
+
+        $this->verify_token = null;
+        $this->secret = null;
+        $this->sub_state = null;
+        $this->sub_start = null;
+        $this->sub_end = null;
+        $this->lastupdate = common_sql_date();
+
+        return $this->update($original);
+    }
+
+    /**
+     * Send a PuSH unsubscription request to the hub for this feed.
+     * The hub will later send us a confirmation POST to /main/push/callback.
+     *
+     * @return bool true on success, false on failure
+     */
+    public function unsubscribe() {
+        return $this->subscribe('unsubscribe');
+    }
+
+    /**
+     * Send an Activity Streams notification to the remote Salmon endpoint,
+     * if so configured.
+     *
+     * @param Profile $actor
+     * @param $verb eg Activity::SUBSCRIBE or Activity::JOIN
+     * @param $object object of the action; if null, the remote entity itself is assumed
+     */
+    public function notify(Profile $actor, $verb, $object=null)
+    {
+        if ($object == null) {
+            $object = $this;
+        }
+        if ($this->salmonuri) {
+            $text = 'update'; // @fixme
+            $id = 'tag:' . common_config('site', 'server') . 
+                ':' . $verb .
+                ':' . $actor->id .
+                ':' . time(); // @fixme
+
+            $entry = new Atom10Entry();
+            $entry->elementStart('entry');
+            $entry->element('id', null, $id);
+            $entry->element('title', null, $text);
+            $entry->element('summary', null, $text);
+            $entry->element('published', null, common_date_w3dtf());
+
+            $entry->element('activity:verb', null, $verb);
+            $entry->raw($profile->asAtomAuthor());
+            $entry->raw($profile->asActivityActor());
+            $entry->raw($object->asActivityNoun('object'));
+            $entry->elmentEnd('entry');
+
+            $feed = $this->atomFeed($actor);
+            $feed->initFeed();
+            $feed->addEntry($entry);
+            $feed->renderEntries();
+            $feed->endFeed();
+
+            $xml = $feed->getString();
+            common_log(LOG_INFO, "Posting to Salmon endpoint $salmon: $xml");
+
+            $salmon = new Salmon(); // ?
+            $salmon->post($this->salmonuri, $xml);
+        }
+    }
+
+    function getBestName()
+    {
+        if ($this->isGroup()) {
+            return $this->localGroup()->getBestName();
+        } else {
+            return $this->localProfile()->getBestName();
+        }
+    }
+
+    function atomFeed($actor)
+    {
+        $feed = new Atom10Feed();
+        // @fixme should these be set up somewhere else?
+        $feed->addNamespace('activity', 'http://activitystrea.ms/spec/1.0/');
+        $feed->addNamesapce('thr', 'http://purl.org/syndication/thread/1.0');
+        $feed->addNamespace('georss', 'http://www.georss.org/georss');
+        $feed->addNamespace('ostatus', 'http://ostatus.org/schema/1.0');
+
+        $taguribase = common_config('integration', 'taguri');
+        $feed->setId("tag:{$taguribase}:UserTimeline:{$actor->id}"); // ???
+
+        $feed->setTitle($actor->getBestName() . ' timeline'); // @fixme
+        $feed->setUpdated(time());
+        $feed->setPublished(time());
+
+        $feed->addLink(common_url('ApiTimelineUser',
+                                  array('id' => $actor->id,
+                                        'type' => 'atom')),
+                       array('rel' => 'self',
+                             'type' => 'application/atom+xml'));
+
+        $feed->addLink(common_url('userbyid',
+                                  array('id' => $actor->id)),
+                       array('rel' => 'alternate',
+                             'type' => 'text/html'));
+
+        return $feed;
+    }
+
+    /**
+     * Read and post notices for updates from the feed.
+     * Currently assumes that all items in the feed are new,
+     * coming from a PuSH hub.
+     *
+     * @param string $xml source of Atom or RSS feed
+     * @param string $hmac X-Hub-Signature header, if present
+     */
+    public function postUpdates($xml, $hmac)
+    {
+        common_log(LOG_INFO, __METHOD__ . ": packet for \"$this->feeduri\"! $hmac $xml");
+
+        if ($this->secret) {
+            if (preg_match('/^sha1=([0-9a-fA-F]{40})$/', $hmac, $matches)) {
+                $their_hmac = strtolower($matches[1]);
+                $our_hmac = hash_hmac('sha1', $xml, $this->secret);
+                if ($their_hmac !== $our_hmac) {
+                    common_log(LOG_ERR, __METHOD__ . ": ignoring PuSH with bad SHA-1 HMAC: got $their_hmac, expected $our_hmac");
+                    return;
+                }
+            } else {
+                common_log(LOG_ERR, __METHOD__ . ": ignoring PuSH with bogus HMAC '$hmac'");
+                return;
+            }
+        } else if ($hmac) {
+            common_log(LOG_ERR, __METHOD__ . ": ignoring PuSH with unexpected HMAC '$hmac'");
+            return;
+        }
+
+        require_once "XML/Feed/Parser.php";
+        $feed = new XML_Feed_Parser($xml, false, false, true);
+        $munger = new FeedMunger($feed);
+        
+        $hits = 0;
+        foreach ($feed as $index => $entry) {
+            // @fixme this might sort in wrong order if we get multiple updates
+
+            $notice = $munger->notice($index);
+
+            // Double-check for oldies
+            // @fixme this could explode horribly for multiple feeds on a blog. sigh
+            $dupe = new Notice();
+            $dupe->uri = $notice->uri;
+            if ($dupe->find(true)) {
+                common_log(LOG_WARNING, __METHOD__ . ": tried to save dupe notice for entry {$notice->uri} of feed {$this->feeduri}");
+                continue;
+            }
+
+            // @fixme need to ensure that groups get handled correctly
+            $saved = Notice::saveNew($notice->profile_id,
+                                     $notice->content,
+                                     'ostatus',
+                                     array('is_local' => Notice::REMOTE_OMB,
+                                           'uri' => $notice->uri,
+                                           'lat' => $notice->lat,
+                                           'lon' => $notice->lon,
+                                           'location_ns' => $notice->location_ns,
+                                           'location_id' => $notice->location_id));
+
+            /*
+            common_log(LOG_DEBUG, "going to check group delivery...");
+            if ($this->group_id) {
+                $group = User_group::staticGet($this->group_id);
+                if ($group) {
+                    common_log(LOG_INFO, __METHOD__ . ": saving to local shadow group $group->id $group->nickname");
+                    $groups = array($group);
+                } else {
+                    common_log(LOG_INFO, __METHOD__ . ": lost the local shadow group?");
+                }
+            } else {
+                common_log(LOG_INFO, __METHOD__ . ": no local shadow groups");
+                $groups = array();
+            }
+            common_log(LOG_DEBUG, "going to add to inboxes...");
+            $notice->addToInboxes($groups, array());
+            common_log(LOG_DEBUG, "added to inboxes.");
+            */
+
+            $hits++;
+        }
+        if ($hits == 0) {
+            common_log(LOG_INFO, __METHOD__ . ": no updates in packet for \"$this->feeduri\"! $xml");
+        }
+    }
+}
diff --git a/plugins/FeedSub/extlib/README b/plugins/OStatus/extlib/README
index 799b40c47..799b40c47 100644
--- a/plugins/FeedSub/extlib/README
+++ b/plugins/OStatus/extlib/README
diff --git a/plugins/FeedSub/extlib/XML/Feed/Parser.php b/plugins/OStatus/extlib/XML/Feed/Parser.php
index ffe8220a5..ffe8220a5 100755
--- a/plugins/FeedSub/extlib/XML/Feed/Parser.php
+++ b/plugins/OStatus/extlib/XML/Feed/Parser.php
diff --git a/plugins/FeedSub/extlib/XML/Feed/Parser/Atom.php b/plugins/OStatus/extlib/XML/Feed/Parser/Atom.php
index c7e218a1e..c7e218a1e 100644
--- a/plugins/FeedSub/extlib/XML/Feed/Parser/Atom.php
+++ b/plugins/OStatus/extlib/XML/Feed/Parser/Atom.php
diff --git a/plugins/FeedSub/extlib/XML/Feed/Parser/AtomElement.php b/plugins/OStatus/extlib/XML/Feed/Parser/AtomElement.php
index 063ecb617..063ecb617 100755
--- a/plugins/FeedSub/extlib/XML/Feed/Parser/AtomElement.php
+++ b/plugins/OStatus/extlib/XML/Feed/Parser/AtomElement.php
diff --git a/plugins/FeedSub/extlib/XML/Feed/Parser/Exception.php b/plugins/OStatus/extlib/XML/Feed/Parser/Exception.php
index 1e76e3f85..1e76e3f85 100755
--- a/plugins/FeedSub/extlib/XML/Feed/Parser/Exception.php
+++ b/plugins/OStatus/extlib/XML/Feed/Parser/Exception.php
diff --git a/plugins/FeedSub/extlib/XML/Feed/Parser/RSS09.php b/plugins/OStatus/extlib/XML/Feed/Parser/RSS09.php
index 07f38f911..07f38f911 100755
--- a/plugins/FeedSub/extlib/XML/Feed/Parser/RSS09.php
+++ b/plugins/OStatus/extlib/XML/Feed/Parser/RSS09.php
diff --git a/plugins/FeedSub/extlib/XML/Feed/Parser/RSS09Element.php b/plugins/OStatus/extlib/XML/Feed/Parser/RSS09Element.php
index d41f36e8d..d41f36e8d 100755
--- a/plugins/FeedSub/extlib/XML/Feed/Parser/RSS09Element.php
+++ b/plugins/OStatus/extlib/XML/Feed/Parser/RSS09Element.php
diff --git a/plugins/FeedSub/extlib/XML/Feed/Parser/RSS1.php b/plugins/OStatus/extlib/XML/Feed/Parser/RSS1.php
index 60c9938ba..60c9938ba 100755
--- a/plugins/FeedSub/extlib/XML/Feed/Parser/RSS1.php
+++ b/plugins/OStatus/extlib/XML/Feed/Parser/RSS1.php
diff --git a/plugins/FeedSub/extlib/XML/Feed/Parser/RSS11.php b/plugins/OStatus/extlib/XML/Feed/Parser/RSS11.php
index 3cd1ef15d..3cd1ef15d 100755
--- a/plugins/FeedSub/extlib/XML/Feed/Parser/RSS11.php
+++ b/plugins/OStatus/extlib/XML/Feed/Parser/RSS11.php
diff --git a/plugins/FeedSub/extlib/XML/Feed/Parser/RSS11Element.php b/plugins/OStatus/extlib/XML/Feed/Parser/RSS11Element.php
index 75918beda..75918beda 100755
--- a/plugins/FeedSub/extlib/XML/Feed/Parser/RSS11Element.php
+++ b/plugins/OStatus/extlib/XML/Feed/Parser/RSS11Element.php
diff --git a/plugins/FeedSub/extlib/XML/Feed/Parser/RSS1Element.php b/plugins/OStatus/extlib/XML/Feed/Parser/RSS1Element.php
index 8e36d5a9b..8e36d5a9b 100755
--- a/plugins/FeedSub/extlib/XML/Feed/Parser/RSS1Element.php
+++ b/plugins/OStatus/extlib/XML/Feed/Parser/RSS1Element.php
diff --git a/plugins/FeedSub/extlib/XML/Feed/Parser/RSS2.php b/plugins/OStatus/extlib/XML/Feed/Parser/RSS2.php
index 0936bd2f5..0936bd2f5 100644
--- a/plugins/FeedSub/extlib/XML/Feed/Parser/RSS2.php
+++ b/plugins/OStatus/extlib/XML/Feed/Parser/RSS2.php
diff --git a/plugins/FeedSub/extlib/XML/Feed/Parser/RSS2Element.php b/plugins/OStatus/extlib/XML/Feed/Parser/RSS2Element.php
index 6edf910dc..6edf910dc 100755
--- a/plugins/FeedSub/extlib/XML/Feed/Parser/RSS2Element.php
+++ b/plugins/OStatus/extlib/XML/Feed/Parser/RSS2Element.php
diff --git a/plugins/FeedSub/extlib/XML/Feed/Parser/Type.php b/plugins/OStatus/extlib/XML/Feed/Parser/Type.php
index 75052619b..75052619b 100644
--- a/plugins/FeedSub/extlib/XML/Feed/Parser/Type.php
+++ b/plugins/OStatus/extlib/XML/Feed/Parser/Type.php
diff --git a/plugins/FeedSub/extlib/XML/Feed/samples/atom10-entryonly.xml b/plugins/OStatus/extlib/XML/Feed/samples/atom10-entryonly.xml
index 02e1c5800..02e1c5800 100755
--- a/plugins/FeedSub/extlib/XML/Feed/samples/atom10-entryonly.xml
+++ b/plugins/OStatus/extlib/XML/Feed/samples/atom10-entryonly.xml
diff --git a/plugins/FeedSub/extlib/XML/Feed/samples/atom10-example1.xml b/plugins/OStatus/extlib/XML/Feed/samples/atom10-example1.xml
index d181d2b6f..d181d2b6f 100755
--- a/plugins/FeedSub/extlib/XML/Feed/samples/atom10-example1.xml
+++ b/plugins/OStatus/extlib/XML/Feed/samples/atom10-example1.xml
diff --git a/plugins/FeedSub/extlib/XML/Feed/samples/atom10-example2.xml b/plugins/OStatus/extlib/XML/Feed/samples/atom10-example2.xml
index 98abf9d54..98abf9d54 100755
--- a/plugins/FeedSub/extlib/XML/Feed/samples/atom10-example2.xml
+++ b/plugins/OStatus/extlib/XML/Feed/samples/atom10-example2.xml
diff --git a/plugins/FeedSub/extlib/XML/Feed/samples/delicious.feed b/plugins/OStatus/extlib/XML/Feed/samples/delicious.feed
index 32f9fa493..32f9fa493 100755
--- a/plugins/FeedSub/extlib/XML/Feed/samples/delicious.feed
+++ b/plugins/OStatus/extlib/XML/Feed/samples/delicious.feed
diff --git a/plugins/FeedSub/extlib/XML/Feed/samples/flickr.feed b/plugins/OStatus/extlib/XML/Feed/samples/flickr.feed
index 57e83af57..57e83af57 100755
--- a/plugins/FeedSub/extlib/XML/Feed/samples/flickr.feed
+++ b/plugins/OStatus/extlib/XML/Feed/samples/flickr.feed
diff --git a/plugins/FeedSub/extlib/XML/Feed/samples/grwifi-atom.xml b/plugins/OStatus/extlib/XML/Feed/samples/grwifi-atom.xml
index c351d3c16..c351d3c16 100755
--- a/plugins/FeedSub/extlib/XML/Feed/samples/grwifi-atom.xml
+++ b/plugins/OStatus/extlib/XML/Feed/samples/grwifi-atom.xml
diff --git a/plugins/FeedSub/extlib/XML/Feed/samples/hoder.xml b/plugins/OStatus/extlib/XML/Feed/samples/hoder.xml
index 099463570..099463570 100755
--- a/plugins/FeedSub/extlib/XML/Feed/samples/hoder.xml
+++ b/plugins/OStatus/extlib/XML/Feed/samples/hoder.xml
diff --git a/plugins/FeedSub/extlib/XML/Feed/samples/illformed_atom10.xml b/plugins/OStatus/extlib/XML/Feed/samples/illformed_atom10.xml
index 612186897..612186897 100755
--- a/plugins/FeedSub/extlib/XML/Feed/samples/illformed_atom10.xml
+++ b/plugins/OStatus/extlib/XML/Feed/samples/illformed_atom10.xml
diff --git a/plugins/FeedSub/extlib/XML/Feed/samples/rss091-complete.xml b/plugins/OStatus/extlib/XML/Feed/samples/rss091-complete.xml
index b0a1fee2d..b0a1fee2d 100755
--- a/plugins/FeedSub/extlib/XML/Feed/samples/rss091-complete.xml
+++ b/plugins/OStatus/extlib/XML/Feed/samples/rss091-complete.xml
diff --git a/plugins/FeedSub/extlib/XML/Feed/samples/rss091-international.xml b/plugins/OStatus/extlib/XML/Feed/samples/rss091-international.xml
index cfe91691f..cfe91691f 100755
--- a/plugins/FeedSub/extlib/XML/Feed/samples/rss091-international.xml
+++ b/plugins/OStatus/extlib/XML/Feed/samples/rss091-international.xml
diff --git a/plugins/FeedSub/extlib/XML/Feed/samples/rss091-simple.xml b/plugins/OStatus/extlib/XML/Feed/samples/rss091-simple.xml
index f0964a227..f0964a227 100755
--- a/plugins/FeedSub/extlib/XML/Feed/samples/rss091-simple.xml
+++ b/plugins/OStatus/extlib/XML/Feed/samples/rss091-simple.xml
diff --git a/plugins/FeedSub/extlib/XML/Feed/samples/rss092-sample.xml b/plugins/OStatus/extlib/XML/Feed/samples/rss092-sample.xml
index 5d75c352b..5d75c352b 100755
--- a/plugins/FeedSub/extlib/XML/Feed/samples/rss092-sample.xml
+++ b/plugins/OStatus/extlib/XML/Feed/samples/rss092-sample.xml
diff --git a/plugins/FeedSub/extlib/XML/Feed/samples/rss10-example1.xml b/plugins/OStatus/extlib/XML/Feed/samples/rss10-example1.xml
index 0edecf58e..0edecf58e 100755
--- a/plugins/FeedSub/extlib/XML/Feed/samples/rss10-example1.xml
+++ b/plugins/OStatus/extlib/XML/Feed/samples/rss10-example1.xml
diff --git a/plugins/FeedSub/extlib/XML/Feed/samples/rss10-example2.xml b/plugins/OStatus/extlib/XML/Feed/samples/rss10-example2.xml
index 26235f78f..26235f78f 100755
--- a/plugins/FeedSub/extlib/XML/Feed/samples/rss10-example2.xml
+++ b/plugins/OStatus/extlib/XML/Feed/samples/rss10-example2.xml
diff --git a/plugins/FeedSub/extlib/XML/Feed/samples/rss2sample.xml b/plugins/OStatus/extlib/XML/Feed/samples/rss2sample.xml
index 53483cc51..53483cc51 100755
--- a/plugins/FeedSub/extlib/XML/Feed/samples/rss2sample.xml
+++ b/plugins/OStatus/extlib/XML/Feed/samples/rss2sample.xml
diff --git a/plugins/FeedSub/extlib/XML/Feed/samples/sixapart-jp.xml b/plugins/OStatus/extlib/XML/Feed/samples/sixapart-jp.xml
index f8a04bba5..f8a04bba5 100755
--- a/plugins/FeedSub/extlib/XML/Feed/samples/sixapart-jp.xml
+++ b/plugins/OStatus/extlib/XML/Feed/samples/sixapart-jp.xml
diff --git a/plugins/FeedSub/extlib/XML/Feed/samples/technorati.feed b/plugins/OStatus/extlib/XML/Feed/samples/technorati.feed
index 6274a32cd..6274a32cd 100755
--- a/plugins/FeedSub/extlib/XML/Feed/samples/technorati.feed
+++ b/plugins/OStatus/extlib/XML/Feed/samples/technorati.feed
diff --git a/plugins/FeedSub/extlib/XML/Feed/schemas/atom.rnc b/plugins/OStatus/extlib/XML/Feed/schemas/atom.rnc
index e662d2626..e662d2626 100755
--- a/plugins/FeedSub/extlib/XML/Feed/schemas/atom.rnc
+++ b/plugins/OStatus/extlib/XML/Feed/schemas/atom.rnc
diff --git a/plugins/FeedSub/extlib/XML/Feed/schemas/rss10.rnc b/plugins/OStatus/extlib/XML/Feed/schemas/rss10.rnc
index 725094788..725094788 100755
--- a/plugins/FeedSub/extlib/XML/Feed/schemas/rss10.rnc
+++ b/plugins/OStatus/extlib/XML/Feed/schemas/rss10.rnc
diff --git a/plugins/FeedSub/extlib/XML/Feed/schemas/rss11.rnc b/plugins/OStatus/extlib/XML/Feed/schemas/rss11.rnc
index c8633766f..c8633766f 100755
--- a/plugins/FeedSub/extlib/XML/Feed/schemas/rss11.rnc
+++ b/plugins/OStatus/extlib/XML/Feed/schemas/rss11.rnc
diff --git a/plugins/FeedSub/extlib/xml-feed-parser-bug-16416.patch b/plugins/OStatus/extlib/xml-feed-parser-bug-16416.patch
index c53bd9737..c53bd9737 100644
--- a/plugins/FeedSub/extlib/xml-feed-parser-bug-16416.patch
+++ b/plugins/OStatus/extlib/xml-feed-parser-bug-16416.patch
diff --git a/plugins/FeedSub/images/24px-Feed-icon.svg.png b/plugins/OStatus/images/24px-Feed-icon.svg.png
index 317225814..317225814 100644
--- a/plugins/FeedSub/images/24px-Feed-icon.svg.png
+++ b/plugins/OStatus/images/24px-Feed-icon.svg.png
diff --git a/plugins/FeedSub/images/48px-Feed-icon.svg.png b/plugins/OStatus/images/48px-Feed-icon.svg.png
index bd1da4f91..bd1da4f91 100644
--- a/plugins/FeedSub/images/48px-Feed-icon.svg.png
+++ b/plugins/OStatus/images/48px-Feed-icon.svg.png
diff --git a/plugins/FeedSub/images/96px-Feed-icon.svg.png b/plugins/OStatus/images/96px-Feed-icon.svg.png
index bf16571ec..bf16571ec 100644
--- a/plugins/FeedSub/images/96px-Feed-icon.svg.png
+++ b/plugins/OStatus/images/96px-Feed-icon.svg.png
diff --git a/plugins/FeedSub/images/README b/plugins/OStatus/images/README
index d9379c23e..d9379c23e 100644
--- a/plugins/FeedSub/images/README
+++ b/plugins/OStatus/images/README
diff --git a/plugins/OStatus/lib/activity.php b/plugins/OStatus/lib/activity.php
new file mode 100644
index 000000000..36e227913
--- /dev/null
+++ b/plugins/OStatus/lib/activity.php
@@ -0,0 +1,85 @@
+<?php
+/**
+ * StatusNet, the distributed open-source microblogging tool
+ *
+ * An activity
+ *
+ * PHP version 5
+ *
+ * LICENCE: This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * 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/>.
+ *
+ * @category  OStatus
+ * @package   StatusNet
+ * @author    Evan Prodromou <evan@status.net>
+ * @copyright 2010 StatusNet, Inc.
+ * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPLv3
+ * @link      http://status.net/
+ */
+
+if (!defined('STATUSNET')) {
+    exit(1);
+}
+
+class ActivityNoun
+{
+    const ARTICLE   = 'http://activitystrea.ms/schema/1.0/article';
+    const BLOGENTRY = 'http://activitystrea.ms/schema/1.0/blog-entry';
+    const NOTE      = 'http://activitystrea.ms/schema/1.0/note';
+    const STATUS    = 'http://activitystrea.ms/schema/1.0/status';
+    const FILE      = 'http://activitystrea.ms/schema/1.0/file';
+    const PHOTO     = 'http://activitystrea.ms/schema/1.0/photo';
+    const ALBUM     = 'http://activitystrea.ms/schema/1.0/photo-album';
+    const PLAYLIST  = 'http://activitystrea.ms/schema/1.0/playlist';
+    const VIDEO     = 'http://activitystrea.ms/schema/1.0/video';
+    const AUDIO     = 'http://activitystrea.ms/schema/1.0/audio';
+    const BOOKMARK  = 'http://activitystrea.ms/schema/1.0/bookmark';
+    const PERSON    = 'http://activitystrea.ms/schema/1.0/person';
+    const GROUP     = 'http://activitystrea.ms/schema/1.0/group';
+    const PLACE     = 'http://activitystrea.ms/schema/1.0/place';
+    const COMMENT   = 'http://activitystrea.ms/schema/1.0/comment'; // tea
+
+    public $type;
+    public $id;
+    public $title;
+    public $summary;
+    public $content;
+}
+
+class Activity
+{
+    const NAMESPACE = 'http://activitystrea.ms/schema/1.0/';
+
+    const POST     = 'http://activitystrea.ms/schema/1.0/post';
+    const SHARE    = 'http://activitystrea.ms/schema/1.0/share';
+    const SAVE     = 'http://activitystrea.ms/schema/1.0/save';
+    const FAVORITE = 'http://activitystrea.ms/schema/1.0/favorite';
+    const PLAY     = 'http://activitystrea.ms/schema/1.0/play';
+    const FOLLOW   = 'http://activitystrea.ms/schema/1.0/follow';
+    const FRIEND   = 'http://activitystrea.ms/schema/1.0/make-friend';
+    const JOIN     = 'http://activitystrea.ms/schema/1.0/join';
+    const TAG      = 'http://activitystrea.ms/schema/1.0/tag';
+
+    public $actor; // an ActivityNoun
+    public $verb;  // a string (the URL)
+    public $object; // an ActivityNoun
+    public $target; // an ActivityNoun
+
+    static function fromAtomEntry($domEntry)
+    {
+    }
+
+    function toAtomEntry()
+    {
+    }
+}
diff --git a/plugins/FeedSub/feeddiscovery.php b/plugins/OStatus/lib/feeddiscovery.php
index 35edaca33..39985fc90 100644
--- a/plugins/FeedSub/feeddiscovery.php
+++ b/plugins/OStatus/lib/feeddiscovery.php
@@ -48,6 +48,18 @@ class FeedSubNoFeedException extends FeedSubException
 {
 }
 
+/**
+ * Given a web page or feed URL, discover the final location of the feed
+ * and return its current contents.
+ *
+ * @example
+ *   $feed = new FeedDiscovery();
+ *   if ($feed->discoverFromURL($url)) {
+ *     print $feed->uri;
+ *     print $feed->type;
+ *     processFeed($feed->body);
+ *   }
+ */
 class FeedDiscovery
 {
     public $uri;
@@ -64,7 +76,7 @@ class FeedDiscovery
 
     /**
      * @param string $url
-     * @param bool $htmlOk
+     * @param bool $htmlOk pass false here if you don't want to follow web pages.
      * @return string with validated URL
      * @throws FeedSubBadURLException
      * @throws FeedSubBadHtmlException
@@ -156,7 +168,13 @@ class FeedDiscovery
         }
 
         // Ok... now on to the links!
+        // Types listed in order of priority -- we'll prefer Atom if available.
         // @fixme merge with the munger link checks
+        $feeds = array(
+            'application/atom+xml' => false,
+            'application/rss+xml' => false,
+        );
+        
         $nodes = $dom->getElementsByTagName('link');
         for ($i = 0; $i < $nodes->length; $i++) {
             $node = $nodes->item($i);
@@ -169,17 +187,21 @@ class FeedDiscovery
                     $type = trim($type->value);
                     $href = trim($href->value);
 
-                    $feedTypes = array(
-                        'application/rss+xml',
-                        'application/atom+xml',
-                    );
-                    if (trim($rel) == 'alternate' && in_array($type, $feedTypes)) {
-                        return $this->resolveURI($href, $base);
+                    if (trim($rel) == 'alternate' && array_key_exists($type, $feeds) && empty($feeds[$type])) {
+                        // Save the first feed found of each type...
+                        $feeds[$type] = $this->resolveURI($href, $base);
                     }
                 }
             }
         }
 
+        // Return the highest-priority feed found
+        foreach ($feeds as $type => $url) {
+            if ($url) {
+                return $url;
+            }
+        }
+
         return false;
     }
 
diff --git a/plugins/FeedSub/feedmunger.php b/plugins/OStatus/lib/feedmunger.php
index f3618b8eb..c895b6ce2 100644
--- a/plugins/FeedSub/feedmunger.php
+++ b/plugins/OStatus/lib/feedmunger.php
@@ -30,8 +30,8 @@ class FeedSubPreviewNotice extends Notice
 
     function __construct($profile)
     {
-        //parent::__construct(); // uhhh?
         $this->profile = $profile;
+        $this->profile_id = 0;
     }
     
     function getProfile()
@@ -56,14 +56,19 @@ class FeedSubPreviewProfile extends Profile
 {
     function getAvatar($width, $height=null)
     {
-        return new FeedSubPreviewAvatar($width, $height);
+        return new FeedSubPreviewAvatar($width, $height, $this->avatar);
     }
 }
 
 class FeedSubPreviewAvatar extends Avatar
 {
+    function __construct($width, $height, $remote)
+    {
+        $this->remoteImage = $remote;
+    }
+
     function displayUrl() {
-        return common_path('plugins/FeedSub/images/48px-Feed-icon.svg.png');
+        return $this->remoteImage;
     }
 }
 
@@ -78,13 +83,17 @@ class FeedMunger
         $this->url = $url;
     }
     
-    function feedinfo()
+    function ostatusProfile()
     {
-        $feedinfo = new Feedinfo();
-        $feedinfo->feeduri = $this->url;
-        $feedinfo->homeuri = $this->feed->link;
-        $feedinfo->huburi = $this->getHubLink();
-        return $feedinfo;
+        $profile = new Ostatus_profile();
+        $profile->feeduri = $this->url;
+        $profile->homeuri = $this->feed->link;
+        $profile->huburi = $this->getHubLink();
+        $salmon = $this->getSalmonLink();
+        if ($salmon) {
+            $profile->salmonuri = $salmon;
+        }
+        return $profile;
     }
 
     function getAtomLink($item, $attribs=array())
@@ -150,6 +159,33 @@ class FeedMunger
         return $this->getAtomLink($this->feed, array('rel' => 'hub'));
     }
 
+    function getSalmonLink()
+    {
+        return $this->getAtomLink($this->feed, array('rel' => 'salmon'));
+    }
+
+    function getSelfLink()
+    {
+        return $this->getAtomLink($this->feed, array('rel' => 'self'));
+    }
+
+    /**
+     * Get an appropriate avatar image source URL, if available.
+     * @return mixed string or false
+     */
+    function getAvatar()
+    {
+        $logo = $this->feed->logo;
+        if ($logo) {
+            return $logo;
+        }
+        $icon = $this->feed->icon;
+        if ($icon) {
+            return $icon;
+        }
+        return common_path('plugins/OStatus/images/48px-Feed-icon.svg.png');
+    }
+
     function profile($preview=false)
     {
         if ($preview) {
@@ -164,6 +200,10 @@ class FeedMunger
         $profile->homepage   = $this->getAltLink($this->feed);
         $profile->bio        = $this->feed->description;
         $profile->profileurl = $this->getAltLink($this->feed);
+
+        if ($preview) {
+            $profile->avatar = $this->getAvatar();
+        }
         
         // @todo tags from categories
         // @todo lat/lon/location?
@@ -177,60 +217,131 @@ class FeedMunger
         if (!$entry) {
             return null;
         }
-        
+
         if ($preview) {
             $notice = new FeedSubPreviewNotice($this->profile(true));
             $notice->id = -1;
         } else {
             $notice = new Notice();
+            $notice->profile_id = $this->profileIdForEntry($index);
         }
 
         $link = $this->getAltLink($entry);
+        if (empty($link)) {
+            if (preg_match('!^https?://!', $entry->id)) {
+                $link = $entry->id;
+                common_log(LOG_DEBUG, "No link on entry, using URL from id: $link");
+            }
+        }
         $notice->uri = $link;
         $notice->url = $link;
         $notice->content = $this->noticeFromEntry($entry);
-        $notice->rendered = common_render_content($notice->content, $notice);
+        $notice->rendered = common_render_content($notice->content, $notice); // @fixme this is failing on group posts
         $notice->created = common_sql_date($entry->updated); // @fixme
         $notice->is_local = Notice::GATEWAY;
         $notice->source = 'feed';
-        
+
+        $location = $this->getLocation($entry);
+        if ($location) {
+            if ($location->location_id) {
+                $notice->location_ns = $location->location_ns;
+                $notice->location_id = $location->location_id;
+            }
+            $notice->lat = $location->lat;
+            $notice->lon = $location->lon;
+        }
+
         return $notice;
     }
 
+    function profileIdForEntry($index=1)
+    {
+        // hack hack hack
+        // should get profile for this entry's author...
+        $remote = Ostatus_profile::staticGet('feeduri', $this->getSelfLink());
+        if ($feed) {
+            return $feed->profile_id;
+        } else {
+            throw new Exception("Can't find feed profile");
+        }
+    }
+
+    /**
+     * Parse location given as a GeoRSS-simple point, if provided.
+     * http://www.georss.org/simple
+     *
+     * @param feed item $entry
+     * @return mixed Location or false
+     */
+    function getLocation($entry)
+    {
+        $dom = $entry->model;
+        $points = $dom->getElementsByTagNameNS('http://www.georss.org/georss', 'point');
+        
+        for ($i = 0; $i < $points->length; $i++) {
+            $point = $points->item(0)->textContent;
+            $point = str_replace(',', ' ', $point); // per spec "treat commas as whitespace"
+            $point = preg_replace('/\s+/', ' ', $point);
+            $point = trim($point);
+            $coords = explode(' ', $point);
+            if (count($coords) == 2) {
+                list($lat, $lon) = $coords;
+                if (is_numeric($lat) && is_numeric($lon)) {
+                    common_log(LOG_INFO, "Looking up location for $lat $lon from georss");
+                    return Location::fromLatLon($lat, $lon);
+                }
+            }
+            common_log(LOG_ERR, "Ignoring bogus georss:point value $point");
+        }
+
+        return false;
+    }
+
     /**
      * @param XML_Feed_Type $entry
      * @return string notice text, within post size limit
      */
     function noticeFromEntry($entry)
     {
+        $max = Notice::maxContent();
+        $ellipsis = "\xe2\x80\xa6"; // U+2026 HORIZONTAL ELLIPSIS
         $title = $entry->title;
         $link = $entry->link;
-        
+
         // @todo We can get <category> entries like this:
         // $cats = $entry->getCategory('category', array(0, true));
         // but it feels like an awful hack. If it's accessible cleanly,
         // try adding #hashtags from the categories/tags on a post.
-        
-        // @todo Should we force a language here?
-        $format = _m('New post: "%1$s" %2$s');
+
         $title = $entry->title;
         $link = $this->getAltLink($entry);
-        $out = sprintf($format, $title, $link);
-        
-        // Trim link if needed...
-        $max = Notice::maxContent();
-        if (mb_strlen($out) > $max) {
-            $link = common_shorten_url($link);
+        if ($link) {
+            // Blog post or such...
+            // @todo Should we force a language here?
+            $format = _m('New post: "%1$s" %2$s');
             $out = sprintf($format, $title, $link);
-        }
 
-        // Trim title if needed...
-        if (mb_strlen($out) > $max) {
-            $ellipsis = "\xe2\x80\xa6"; // U+2026 HORIZONTAL ELLIPSIS
-            $used = mb_strlen($out) - mb_strlen($title);
-            $available = $max - $used - mb_strlen($ellipsis);
-            $title = mb_substr($title, 0, $available) . $ellipsis;
-            $out = sprintf($format, $title, $link);
+            // Trim link if needed...
+            if (mb_strlen($out) > $max) {
+                $link = common_shorten_url($link);
+                $out = sprintf($format, $title, $link);
+            }
+
+            // Trim title if needed...
+            if (mb_strlen($out) > $max) {
+                $used = mb_strlen($out) - mb_strlen($title);
+                $available = $max - $used - mb_strlen($ellipsis);
+                $title = mb_substr($title, 0, $available) . $ellipsis;
+                $out = sprintf($format, $title, $link);
+            }
+        } else {
+            // No link? Consider a bare status update.
+            if (mb_strlen($title) > $max) {
+                $available = $max - mb_strlen($ellipsis);
+                $out = mb_substr($title, 0, $available) . $ellipsis;
+            } else {
+                $out = $title;
+            }
         }
         
         return $out;
diff --git a/plugins/OStatus/lib/hubdistribqueuehandler.php b/plugins/OStatus/lib/hubdistribqueuehandler.php
new file mode 100644
index 000000000..245a57f72
--- /dev/null
+++ b/plugins/OStatus/lib/hubdistribqueuehandler.php
@@ -0,0 +1,185 @@
+<?php
+/*
+ * StatusNet - the distributed open-source microblogging tool
+ * Copyright (C) 2010, StatusNet, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * Send a PuSH subscription verification from our internal hub.
+ * Queue up final distribution for 
+ * @package Hub
+ * @author Brion Vibber <brion@status.net>
+ */
+class HubDistribQueueHandler extends QueueHandler
+{
+    function transport()
+    {
+        return 'hubdistrib';
+    }
+
+    function handle($notice)
+    {
+        assert($notice instanceof Notice);
+
+        $this->pushUser($notice);
+        foreach ($notice->getGroups() as $group) {
+            $this->pushGroup($notice, $group->group_id);
+        }
+        return true;
+    }
+    
+    function pushUser($notice)
+    {
+        // See if there's any PuSH subscriptions, including OStatus clients.
+        // @fixme handle group subscriptions as well
+        // http://identi.ca/api/statuses/user_timeline/1.atom
+        $feed = common_local_url('ApiTimelineUser',
+                                 array('id' => $notice->profile_id,
+                                       'format' => 'atom'));
+        $this->pushFeed($feed, array($this, 'userFeedForNotice'), $notice);
+    }
+
+    function pushGroup($notice, $group_id)
+    {
+        $feed = common_local_url('ApiTimelineGroup',
+                                 array('id' => $group_id,
+                                       'format' => 'atom'));
+        $this->pushFeed($feed, array($this, 'groupFeedForNotice'), $group_id, $notice);
+    }
+
+    /**
+     * @param string $feed URI to the feed
+     * @param callable $callback function to generate Atom feed update if needed
+     *        any additional params are passed to the callback.
+     */
+    function pushFeed($feed, $callback)
+    {
+        $hub = common_config('ostatus', 'hub');
+        if ($hub) {
+            $this->pushFeedExternal($feed, $hub);
+        }
+
+        $sub = new HubSub();
+        $sub->topic = $feed;
+        if ($sub->find()) {
+            $args = array_slice(func_get_args(), 2);
+            $atom = call_user_func_array($callback, $args);
+            $this->pushFeedInternal($atom, $sub);
+        } else {
+            common_log(LOG_INFO, "No PuSH subscribers for $feed");
+        }
+        return true;
+    }
+
+    /**
+     * Ping external hub about this update.
+     * The hub will pull the feed and check for new items later.
+     * Not guaranteed safe in an environment with database replication.
+     *
+     * @param string $feed feed topic URI
+     * @param string $hub PuSH hub URI
+     * @fixme can consolidate pings for user & group posts
+     */
+    function pushFeedExternal($feed, $hub)
+    {
+        $client = new HTTPClient();
+        try {
+            $data = array('hub.mode' => 'publish',
+                          'hub.url' => $feed);
+            $response = $client->post($hub, array(), $data);
+            if ($response->getStatus() == 204) {
+                common_log(LOG_INFO, "PuSH ping to hub $hub for $feed ok");
+                return true;
+            } else {
+                common_log(LOG_ERR, "PuSH ping to hub $hub for $feed failed with HTTP " .
+                                    $response->getStatus() . ': ' .
+                                    $response->getBody());
+            }
+        } catch (Exception $e) {
+            common_log(LOG_ERR, "PuSH ping to hub $hub for $feed failed: " . $e->getMessage());
+            return false;
+        }
+    }
+
+    /**
+     * Queue up direct feed update pushes to subscribers on our internal hub.
+     * @param string $atom update feed, containing only new/changed items
+     * @param HubSub $sub open query of subscribers
+     */
+    function pushFeedInternal($atom, $sub)
+    {
+        common_log(LOG_INFO, "Preparing $sub->N PuSH distribution(s) for $sub->topic");
+        $qm = QueueManager::get();
+        while ($sub->fetch()) {
+            common_log(LOG_INFO, "Prepping PuSH distribution to $sub->callback for $sub->topic");
+            $data = array('sub' => clone($sub),
+                          'atom' => $atom);
+            $qm->enqueue($data, 'hubout');
+        }
+    }
+
+    /**
+     * Build a single-item version of the sending user's Atom feed.
+     * @param Notice $notice
+     * @return string
+     */
+    function userFeedForNotice($notice)
+    {
+        // @fixme this feels VERY hacky...
+        // should probably be a cleaner way to do it
+
+        ob_start();
+        $api = new ApiTimelineUserAction();
+        $api->prepare(array('id' => $notice->profile_id,
+                            'format' => 'atom',
+                            'max_id' => $notice->id,
+                            'since_id' => $notice->id - 1));
+        $api->showTimeline();
+        $feed = ob_get_clean();
+        
+        // ...and override the content-type back to something normal... eww!
+        // hope there's no other headers that got set while we weren't looking.
+        header('Content-Type: text/html; charset=utf-8');
+
+        common_log(LOG_DEBUG, $feed);
+        return $feed;
+    }
+
+    function groupFeedForNotice($group_id, $notice)
+    {
+        // @fixme this feels VERY hacky...
+        // should probably be a cleaner way to do it
+
+        ob_start();
+        $api = new ApiTimelineGroupAction();
+        $args = array('id' => $group_id,
+                      'format' => 'atom',
+                      'max_id' => $notice->id,
+                      'since_id' => $notice->id - 1);
+        $api->prepare($args);
+        $api->handle($args);
+        $feed = ob_get_clean();
+        
+        // ...and override the content-type back to something normal... eww!
+        // hope there's no other headers that got set while we weren't looking.
+        header('Content-Type: text/html; charset=utf-8');
+
+        common_log(LOG_DEBUG, $feed);
+        return $feed;
+    }
+
+}
+
diff --git a/plugins/OStatus/lib/huboutqueuehandler.php b/plugins/OStatus/lib/huboutqueuehandler.php
new file mode 100644
index 000000000..0791c7e5d
--- /dev/null
+++ b/plugins/OStatus/lib/huboutqueuehandler.php
@@ -0,0 +1,52 @@
+<?php
+/*
+ * StatusNet - the distributed open-source microblogging tool
+ * Copyright (C) 2010, StatusNet, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * Send a raw PuSH atom update from our internal hub.
+ * @package Hub
+ * @author Brion Vibber <brion@status.net>
+ */
+class HubOutQueueHandler extends QueueHandler
+{
+    function transport()
+    {
+        return 'hubout';
+    }
+
+    function handle($data)
+    {
+        $sub = $data['sub'];
+        $atom = $data['atom'];
+
+        assert($sub instanceof HubSub);
+        assert(is_string($atom));
+
+        try {
+            $sub->push($atom);
+        } catch (Exception $e) {
+            common_log(LOG_ERR, "Failed PuSH to $sub->callback for $sub->topic: " .
+                                $e->getMessage());
+            // @fixme Reschedule a later delivery?
+            return true;
+        }
+
+        return true;
+    }
+}
+
diff --git a/plugins/OStatus/lib/hubverifyqueuehandler.php b/plugins/OStatus/lib/hubverifyqueuehandler.php
new file mode 100644
index 000000000..125d13a77
--- /dev/null
+++ b/plugins/OStatus/lib/hubverifyqueuehandler.php
@@ -0,0 +1,53 @@
+<?php
+/*
+ * StatusNet - the distributed open-source microblogging tool
+ * Copyright (C) 2010, StatusNet, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * Send a PuSH subscription verification from our internal hub.
+ * @package Hub
+ * @author Brion Vibber <brion@status.net>
+ */
+class HubVerifyQueueHandler extends QueueHandler
+{
+    function transport()
+    {
+        return 'hubverify';
+    }
+
+    function handle($data)
+    {
+        $sub = $data['sub'];
+        $mode = $data['mode'];
+
+        assert($sub instanceof HubSub);
+        assert($mode === 'subscribe' || $mode === 'unsubscribe');
+
+        common_log(LOG_INFO, __METHOD__ . ": $mode $sub->callback $sub->topic");
+        try {
+            $sub->verify($mode);
+        } catch (Exception $e) {
+            common_log(LOG_ERR, "Failed PuSH $mode verify to $sub->callback for $sub->topic: " .
+                                $e->getMessage());
+            // @fixme schedule retry?
+            // @fixme just kill it?
+        }
+
+        return true;
+    }
+}
+
diff --git a/plugins/OStatus/lib/salmon.php b/plugins/OStatus/lib/salmon.php
new file mode 100644
index 000000000..8c77222a6
--- /dev/null
+++ b/plugins/OStatus/lib/salmon.php
@@ -0,0 +1,64 @@
+<?php
+/**
+ * StatusNet - the distributed open-source microblogging tool
+ * Copyright (C) 2010, StatusNet, Inc.
+ *
+ * A sample module to show best practices for StatusNet plugins
+ *
+ * PHP version 5
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * @package   StatusNet
+ * @author    James Walker <james@status.net>
+ * @copyright 2010 StatusNet, Inc.
+ * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
+ * @link      http://status.net/
+ */
+class Salmon
+{
+    public function post($endpoint_uri, $xml)
+    {
+        if (empty($endpoint_uri)) {
+            return FALSE;
+        }
+
+        $headers = array('Content-type: application/atom+xml');
+
+        try {
+            $client = new HTTPClient();
+            $client->setBody($xml);
+            $response = $client->post($endpoint_uri, $headers);
+        } catch (HTTP_Request2_Exception $e) {
+            return false;
+        }
+        if ($response->getStatus() != 200) {
+            return false;
+        }
+
+    }
+
+    public function createMagicEnv($text, $userid)
+    {
+
+
+    }
+
+
+    public function verifyMagicEnv($env)
+    {
+
+
+    }
+}
diff --git a/plugins/OStatus/lib/webfinger.php b/plugins/OStatus/lib/webfinger.php
new file mode 100644
index 000000000..417d54904
--- /dev/null
+++ b/plugins/OStatus/lib/webfinger.php
@@ -0,0 +1,143 @@
+<?php
+/**
+ * StatusNet - the distributed open-source microblogging tool
+ * Copyright (C) 2010, StatusNet, Inc.
+ *
+ * A sample module to show best practices for StatusNet plugins
+ *
+ * PHP version 5
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * 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/>.
+ *
+ * @package   StatusNet
+ * @author    James Walker <james@status.net>
+ * @copyright 2010 StatusNet, Inc.
+ * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
+ * @link      http://status.net/
+ */
+
+define('WEBFINGER_SERVICE_REL_VALUE', 'lrdd');
+
+/**
+ * Implement the webfinger protocol.
+ */
+class Webfinger
+{
+    /**
+     * Perform a webfinger lookup given an account.
+     */ 
+    public function lookup($id)
+    {
+        $id = $this->normalize($id);
+        list($name, $domain) = explode('@', $id);
+
+        $links = $this->getServiceLinks($domain);
+        if (!$links) {
+            return false;
+        }
+        
+        $services = array();
+        foreach ($links as $link) {
+            if ($link['template']) {
+                return $this->getServiceDescription($link['template'], $id);
+            }
+            if ($link['href']) {
+                return $this->getServiceDescription($link['href'], $id);
+            }
+        }
+    }
+
+    /**
+     * Normalize an account ID
+     */
+    function normalize($id)
+    {
+        if (substr($id, 0, 7) == 'acct://') {
+            return substr($id, 7); 
+        } else if (substr($id, 0, 5) == 'acct:') {
+            return substr($id, 5);
+        }
+
+        return $id;
+    }
+
+    function getServiceLinks($domain)
+    {
+        $url = 'http://'. $domain .'/.well-known/host-meta';
+        $content = $this->fetchURL($url);
+        if (empty($content)) {
+            common_log(LOG_DEBUG, 'Error fetching host-meta');
+            return false;
+        }
+        $result = XRD::parse($content);
+
+        // Ensure that the host == domain (spec may include signing later)
+        if ($result->host != $domain) {
+            return false;
+        }
+        
+        $links = array();
+        foreach ($result->links as $link) {
+            if ($link['rel'] == WEBFINGER_SERVICE_REL_VALUE) {
+                $links[] = $link;
+            }
+
+        }
+        return $links;
+    }
+
+    function getServiceDescription($template, $id)
+    {
+        $url = $this->applyTemplate($template, 'acct:' . $id);
+
+        $content = $this->fetchURL($url);
+
+        return XRD::parse($content);
+    }
+
+    function fetchURL($url)
+    {
+        try {
+            $client = new HTTPClient();
+            $response = $client->get($url);
+        } catch (HTTP_Request2_Exception $e) {
+            return false;
+        }
+
+        if ($response->getStatus() != 200) {
+            return false;
+        }
+
+        return $response->getBody();
+    }
+
+    function applyTemplate($template, $id)
+    {
+        $template = str_replace('{uri}', urlencode($id), $template);
+
+        return $template;
+    }
+
+    function getHostMeta($domain, $template) {
+        $xrd = new XRD();
+        $xrd->host = $domain;
+        $xrd->links[] = array('rel' => 'lrdd',
+                              'template' => $template,
+                              'title' => array('Resource Descriptor'));
+
+        return $xrd->toXML();
+    }
+}
+
+
diff --git a/plugins/OStatus/lib/xrd.php b/plugins/OStatus/lib/xrd.php
new file mode 100644
index 000000000..16d27f8eb
--- /dev/null
+++ b/plugins/OStatus/lib/xrd.php
@@ -0,0 +1,183 @@
+<?php
+/**
+ * StatusNet - the distributed open-source microblogging tool
+ * Copyright (C) 2010, StatusNet, Inc.
+ *
+ * A sample module to show best practices for StatusNet plugins
+ *
+ * PHP version 5
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * 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/>.
+ *
+ * @package   StatusNet
+ * @author    James Walker <james@status.net>
+ * @copyright 2010 StatusNet, Inc.
+ * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
+ * @link      http://status.net/
+ */
+
+
+class XRD
+{
+    const XML_NS = 'http://www.w3.org/2000/xmlns/';
+    
+    const XRD_NS = 'http://docs.oasis-open.org/ns/xri/xrd-1.0';
+
+    const HOST_META_NS = 'http://host-meta.net/xrd/1.0';
+    
+    public $expires;
+
+    public $subject;
+
+    public $host;
+
+    public $alias = array();
+    
+    public $types = array();
+    
+    public $links = array();
+    
+    public static function parse($xml)
+    {
+        $xrd = new XRD();
+
+        $dom = new DOMDocument();
+        $dom->loadXML($xml);
+        $xrd_element = $dom->getElementsByTagName('XRD')->item(0);
+
+        // Check for host-meta host
+        $host = $xrd_element->getElementsByTagName('Host')->item(0)->nodeValue;
+        if ($host) {
+            $xrd->host = $host;
+        }
+
+        // Loop through other elements
+        foreach ($xrd_element->childNodes as $node) {
+            switch ($node->tagName) {
+            case 'Expires':
+                $xrd->expires = $node->nodeValue;
+                break;
+            case 'Subject':
+                $xrd->subject = $node->nodeValue;
+                break;
+                
+            case 'Alias':
+                $xrd->alias[] = $node->nodeValue;
+                break;
+
+            case 'Link':
+                $xrd->links[] = $xrd->parseLink($node);
+                break;
+
+            case 'Type':
+                $xrd->types[] = $xrd->parseType($node);
+                break;
+
+            }
+        }
+        return $xrd;
+    }
+
+    public function toXML()
+    {
+        $dom = new DOMDocument('1.0', 'UTF-8');
+        $dom->formatOutput = true;
+        
+        $xrd_dom = $dom->createElementNS(XRD::XRD_NS, 'XRD');
+        $dom->appendChild($xrd_dom);
+
+        if ($this->host) {
+            $host_dom = $dom->createElement('hm:Host', $this->host);
+            $xrd_dom->setAttributeNS(XRD::XML_NS, 'xmlns:hm', XRD::HOST_META_NS);
+            $xrd_dom->appendChild($host_dom);
+        }
+        
+		if ($this->expires) {
+			$expires_dom = $dom->createElement('Expires', $this->expires);
+			$xrd_dom->appendChild($expires_dom);
+		}
+
+		if ($this->subject) {
+			$subject_dom = $dom->createElement('Subject', $this->subject);
+			$xrd_dom->appendChild($subject_dom);
+		}
+
+		foreach ($this->alias as $alias) {
+			$alias_dom = $dom->createElement('Alias', $alias);
+			$xrd_dom->appendChild($alias_dom);
+		}
+
+		foreach ($this->types as $type) {
+			$type_dom = $dom->createElement('Type', $type);
+			$xrd_dom->appendChild($type_dom);
+		}
+
+		foreach ($this->links as $link) {
+			$link_dom = $this->saveLink($dom, $link);
+			$xrd_dom->appendChild($link_dom);
+		}
+
+        return $dom->saveXML();
+    }
+
+    function parseType($element)
+    {
+        return array();
+    }
+    
+    function parseLink($element)
+    {
+        $link = array();
+        $link['rel'] = $element->getAttribute('rel');
+        $link['type'] = $element->getAttribute('type');
+        $link['href'] = $element->getAttribute('href');
+        $link['template'] = $element->getAttribute('template');
+        foreach ($element->childNodes as $node) {
+            switch($node->tagName) {
+            case 'Title':
+                $link['title'][] = $node->nodeValue;
+            }
+        }
+
+        return $link;
+    }
+
+    function saveLink($doc, $link)
+    {
+        $link_element = $doc->createElement('Link');
+        if ($link['rel']) {
+            $link_element->setAttribute('rel', $link['rel']);
+        }
+        if ($link['type']) {
+            $link_element->setAttribute('type', $link['type']);
+        }
+        if ($link['href']) {
+            $link_element->setAttribute('href', $link['href']);
+        }
+        if ($link['template']) {
+            $link_element->setAttribute('template', $link['template']);
+        }
+
+        if (is_array($link['title'])) {
+            foreach($link['title'] as $title) {
+                $title = $doc->createElement('Title', $title);
+                $link_element->appendChild($title);
+            }
+        }
+
+        
+        return $link_element;
+    }
+}
+
diff --git a/plugins/FeedSub/locale/FeedSub.po b/plugins/OStatus/locale/OStatus.po
index dedc018e3..dedc018e3 100644
--- a/plugins/FeedSub/locale/FeedSub.po
+++ b/plugins/OStatus/locale/OStatus.po
diff --git a/plugins/FeedSub/locale/fr/LC_MESSAGES/FeedSub.po b/plugins/OStatus/locale/fr/LC_MESSAGES/OStatus.po
index f17dfa50a..f17dfa50a 100644
--- a/plugins/FeedSub/locale/fr/LC_MESSAGES/FeedSub.po
+++ b/plugins/OStatus/locale/fr/LC_MESSAGES/OStatus.po
diff --git a/plugins/FeedSub/tests/FeedDiscoveryTest.php b/plugins/OStatus/tests/FeedDiscoveryTest.php
index 1c5249701..1c5249701 100644
--- a/plugins/FeedSub/tests/FeedDiscoveryTest.php
+++ b/plugins/OStatus/tests/FeedDiscoveryTest.php
diff --git a/plugins/FeedSub/tests/FeedMungerTest.php b/plugins/OStatus/tests/FeedMungerTest.php
index 0ce24c9fb..0ce24c9fb 100644
--- a/plugins/FeedSub/tests/FeedMungerTest.php
+++ b/plugins/OStatus/tests/FeedMungerTest.php
diff --git a/plugins/FeedSub/tests/gettext-speedtest.php b/plugins/OStatus/tests/gettext-speedtest.php
index 8bbdf5e89..8bbdf5e89 100644
--- a/plugins/FeedSub/tests/gettext-speedtest.php
+++ b/plugins/OStatus/tests/gettext-speedtest.php
diff --git a/plugins/Realtime/realtimeupdate.js b/plugins/Realtime/realtimeupdate.js
index ab548958a..0f7a680d7 100644
--- a/plugins/Realtime/realtimeupdate.js
+++ b/plugins/Realtime/realtimeupdate.js
@@ -209,10 +209,10 @@ console.log(data);
           var rf;
           rf = "<form id=\"repeat-"+id+"\" class=\"form_repeat\" method=\"post\" action=\""+RealtimeUpdate._repeaturl+"\">"+
                "<fieldset>"+
-               "<legend>Favor this notice</legend>"+
+               "<legend>Repeat this notice?</legend>"+
                "<input name=\"token-"+id+"\" type=\"hidden\" id=\"token-"+id+"\" value=\""+session_key+"\"/>"+
-               "<input name=\"notice\" type=\"hidden\" id=\"notice-n"+id+"\" value=\""+id+"\"/>"+
-               "<input type=\"submit\" id=\"repeat-submit-"+id+"\" name=\"repeat-submit-"+id+"\" class=\"submit\" value=\"Favor\" title=\"Repeat this notice\"/>"+
+               "<input name=\"notice\" type=\"hidden\" id=\"notice-"+id+"\" value=\""+id+"\"/>"+
+               "<input type=\"submit\" id=\"repeat-submit-"+id+"\" name=\"repeat-submit-"+id+"\" class=\"submit\" value=\"Yes\" title=\"Repeat this notice\"/>"+
                "</fieldset>"+
                "</form>";