diff --git a/plugins/OStatus/OStatusPlugin.php b/plugins/OStatus/OStatusPlugin.php index e548a151c7..4ebe4551ec 100644 --- a/plugins/OStatus/OStatusPlugin.php +++ b/plugins/OStatus/OStatusPlugin.php @@ -1,17 +1,7 @@ -Author URI: http://status.net/ -*/ - /* * StatusNet - the distributed open-source microblogging tool - * Copyright (C) 2009, StatusNet, Inc. + * 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 @@ -28,17 +18,12 @@ Author URI: http://status.net/ */ /** - * @package FeedSubPlugin + * @package OStatusPlugin * @maintainer Brion Vibber */ 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 { } @@ -258,24 +243,6 @@ class OStatusPlugin extends Plugin } } - /** - * Notify remote server when one of our users subscribes. - * @fixme Check and restart the PuSH subscription if needed - * - * @param User $user - * @param Profile $other - * @return hook return value - */ - function onEndSubscribe($user, $other) - { - $oprofile = Ostatus_profile::staticGet('profile_id', $other->id); - if ($oprofile) { - // Notify the remote server of the unsub, if supported. - $oprofile->notify($user->getProfile(), ActivityVerb::FOLLOW, $oprofile); - } - return true; - } - /** * Notify remote server and garbage collect unused feeds on unsubscribe. * @fixme send these operations to background queues @@ -309,6 +276,7 @@ class OStatusPlugin extends Plugin function onCheckSchema() { $schema = Schema::get(); $schema->ensureTable('ostatus_profile', Ostatus_profile::schemaDef()); + $schema->ensureTable('feedsub', FeedSub::schemaDef()); $schema->ensureTable('hubsub', HubSub::schemaDef()); return true; } @@ -345,4 +313,19 @@ class OStatusPlugin extends Plugin return false; } } + + /** + * Send incoming PuSH feeds for OStatus endpoints in for processing. + * + * @param FeedSub $feedsub + * @param DOMDocument $feed + * @return mixed hook return code + */ + function onStartFeedSubReceive($feedsub, $feed) + { + $oprofile = Ostatus_profile::staticGet('feeduri', $feedsub->uri); + if ($oprofile) { + $oprofile->processFeed($feed); + } + } } diff --git a/plugins/OStatus/actions/feedsubsettings.php b/plugins/OStatus/actions/feedsubsettings.php index 6933c9bf21..3e1d0aa823 100644 --- a/plugins/OStatus/actions/feedsubsettings.php +++ b/plugins/OStatus/actions/feedsubsettings.php @@ -26,7 +26,7 @@ if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); } class FeedSubSettingsAction extends ConnectSettingsAction { - protected $feedurl; + protected $profile_uri; protected $preview; protected $munger; @@ -88,7 +88,10 @@ class FeedSubSettingsAction extends ConnectSettingsAction $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->input('profile_uri', + _m('Feed URL'), + $this->profile_uri, + _m('Enter the profile URL of a PubSubHubbub-enabled feed')); $this->elementEnd('li'); $this->elementEnd('ul'); @@ -145,79 +148,55 @@ class FeedSubSettingsAction extends ConnectSettingsAction */ function validateFeed() { - $feedurl = trim($this->arg('feedurl')); + $profile_uri = trim($this->arg('profile_uri')); - if ($feedurl == '') { - $this->showForm(_m('Empty feed URL!')); + if ($profile_uri == '') { + $this->showForm(_m('Empty remote profile URL!')); return; } - $this->feedurl = $feedurl; + $this->profile_uri = $profile_uri; - // Get the canonical feed URI and check it + // @fixme validate, normalize bla bla try { - $discover = new FeedDiscovery(); - $uri = $discover->discoverFromURL($feedurl); + $oprofile = Ostatus_profile::ensureProfile($this->profile_uri); + $this->oprofile = $oprofile; + return true; } catch (FeedSubBadURLException $e) { - $this->showForm(_m('Invalid URL or could not reach server.')); - return false; + $err = _m('Invalid URL or could not reach server.'); } catch (FeedSubBadResponseException $e) { - $this->showForm(_m('Cannot read feed; server returned error.')); - return false; + $err = _m('Cannot read feed; server returned error.'); } catch (FeedSubEmptyException $e) { - $this->showForm(_m('Cannot read feed; server returned an empty page.')); - return false; + $err = _m('Cannot read feed; server returned an empty page.'); } catch (FeedSubBadHTMLException $e) { - $this->showForm(_m('Bad HTML, could not find feed link.')); - return false; + $err = _m('Bad HTML, could not find feed link.'); } catch (FeedSubNoFeedException $e) { - $this->showForm(_m('Could not find a feed linked from this URL.')); - return false; + $err = _m('Could not find a feed linked from this URL.'); } catch (FeedSubUnrecognizedTypeException $e) { - $this->showForm(_m('Not a recognized feed type.')); - return false; + $err = _m('Not a recognized feed type.'); } catch (FeedSubException $e) { // Any new ones we forgot about - $this->showForm(_m('Bad feed URL.')); - return false; + $err = sprintf(_m('Bad feed URL: %s %s'), get_class($e), $e->getMessage()); } - - $this->munger = $discover->feedMunger(); - $this->profile = $this->munger->ostatusProfile(); - if ($this->profile->huburi == '' && !common_config('feedsub', 'nohub')) { - $this->showForm(_m('Feed is not PuSH-enabled; cannot subscribe.')); - return false; - } - - return true; + $this->showForm($err); + return false; } function saveFeed() { if ($this->validateFeed()) { $this->preview = true; - $this->profile = Ostatus_profile::ensureProfile($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->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 $user = common_current_user(); - if ($this->profile->isGroup()) { - $group = $this->profile->localGroup(); + if (!$this->oprofile->subscribe()) { + $this->showForm(_m("Failed to set up server-to-server subscription.")); + return; + } + + if ($this->oprofile->isGroup()) { + $group = $this->oprofile->localGroup(); if ($user->isMember($group)) { $this->showForm(_m('Already a member!')); } elseif (Group_member::join($this->profile->group_id, $user->id)) { @@ -226,13 +205,13 @@ class FeedSubSettingsAction extends ConnectSettingsAction $this->showForm(_m('Remote group join failed!')); } } else { - $local = $this->profile->localProfile(); + $local = $this->oprofile->localProfile(); if ($user->isSubscribed($local)) { $this->showForm(_m('Already subscribed!')); - } elseif ($user->subscribeTo($local)) { - $this->showForm(_m('Feed subscribed!')); + } elseif ($this->oprofile->subscribeLocalToRemote($user)) { + $this->showForm(_m('Remote user subscribed!')); } else { - $this->showForm(_m('Feed subscription failed!')); + $this->showForm(_m('Remote subscription failed!')); } } } @@ -248,17 +227,7 @@ class FeedSubSettingsAction extends ConnectSettingsAction 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.'); - } + $this->text('Profile preview should go here'); } function showScripts() diff --git a/plugins/OStatus/actions/pushcallback.php b/plugins/OStatus/actions/pushcallback.php index ed859a32f8..7e1227a66a 100644 --- a/plugins/OStatus/actions/pushcallback.php +++ b/plugins/OStatus/actions/pushcallback.php @@ -48,9 +48,9 @@ class PushCallbackAction extends Action throw new ServerException('Empty or invalid feed id', 400); } - $profile = Ostatus_profile::staticGet('id', $feedid); - if (!$profile) { - throw new ServerException('Unknown OStatus/PuSH feed id ' . $feedid, 400); + $feedsub = FeedSub::staticGet('id', $feedid); + if (!$feedsub) { + throw new ServerException('Unknown PuSH feed id ' . $feedid, 400); } $hmac = ''; @@ -62,7 +62,7 @@ class PushCallbackAction extends Action // @fixme Queue this to a background process; we should return // as quickly as possible from a distribution POST. - $profile->postUpdates($post, $hmac); + $feedsub->receive($post, $hmac); } /** @@ -81,29 +81,29 @@ class PushCallbackAction extends Action throw new ServerException("Bogus hub callback: bad mode", 404); } - $profile = Ostatus_profile::staticGet('feeduri', $topic); - if (!$profile) { + $feedsub = FeedSub::staticGet('uri', $topic); + if (!$feedsub) { common_log(LOG_WARNING, __METHOD__ . ": bogus hub callback for unknown feed $topic"); throw new ServerException("Bogus hub callback: unknown feed", 404); } - if ($profile->verify_token !== $verify_token) { + if ($feedsub->verify_token !== $verify_token) { common_log(LOG_WARNING, __METHOD__ . ": bogus hub callback with bad token \"$verify_token\" for feed $topic"); throw new ServerException("Bogus hub callback: bad token", 404); } - if ($mode != $profile->sub_state) { - common_log(LOG_WARNING, __METHOD__ . ": bogus hub callback with bad mode \"$mode\" for feed $topic in state \"{$profile->sub_state}\""); + if ($mode != $feedsub->sub_state) { + common_log(LOG_WARNING, __METHOD__ . ": bogus hub callback with bad mode \"$mode\" for feed $topic in state \"{$feedsub->sub_state}\""); throw new ServerException("Bogus hub callback: mode doesn't match subscription state.", 404); } // OK! if ($mode == 'subscribe') { common_log(LOG_INFO, __METHOD__ . ': sub confirmed'); - $profile->confirmSubscribe($lease_seconds); + $feedsub->confirmSubscribe($lease_seconds); } else { common_log(LOG_INFO, __METHOD__ . ": unsub confirmed; deleting sub record for $topic"); - $profile->confirmUnsubscribe(); + $feedsub->confirmUnsubscribe(); } print $challenge; } diff --git a/plugins/OStatus/actions/salmon.php b/plugins/OStatus/actions/salmon.php index 224134cd7c..ea5b8e4ea8 100644 --- a/plugins/OStatus/actions/salmon.php +++ b/plugins/OStatus/actions/salmon.php @@ -68,6 +68,9 @@ class SalmonAction extends Action return true; } + /** + * @fixme probably call Ostatus_profile::processFeed + */ function handle($args) { common_log(LOG_INFO, 'Salmon: incoming post for user '. $this->user->id); @@ -95,6 +98,9 @@ class SalmonAction extends Action } } + /** + * @fixme probably call Ostatus_profile::processFeed + */ function handlePost() { switch ($this->act->object->type) { @@ -111,14 +117,23 @@ class SalmonAction extends Action $profile = $this->ensureProfile(); } + /** + * @fixme probably call Ostatus_profile::processFeed + */ function handleFollow() { } + /** + * @fixme probably call Ostatus_profile::processFeed + */ function handleFavorite() { } + /** + * @fixme probably call Ostatus_profile::processFeed + */ function handleShare() { } @@ -131,17 +146,13 @@ class SalmonAction extends Action throw new Exception("Received a salmon slap from unidentified actor."); } - $ostatusProfile = Ostatus_profile::staticGet('homeuri', $actor->id); - - if (empty($ostatusProfile)) { - return $this->createProfile(); - } else { - // XXX: can we receive a salmon slap from a group...? - assert(!empty($ostatusProfile->profile_id)); - return Profile::staticGet($ostatusProfile->profile_id); - } + $ostatusProfile = Ostatus_profile::ensureActorProfile($this->act); + return $oprofile->localProfile(); } + /** + * @fixme anything new in here probably should be merged into Ostatus_profile::ensureActorProfile and friends + */ function createProfile() { $actor = $this->act->actor; @@ -186,6 +197,9 @@ class SalmonAction extends Action return $profile; } + /** + * @fixme should be merged into Ostatus_profile + */ function nicknameFromURI($uri) { preg_match('/(\w+):/', $uri, $matches); diff --git a/plugins/OStatus/classes/FeedSub.php b/plugins/OStatus/classes/FeedSub.php new file mode 100644 index 0000000000..dc2c0b710b --- /dev/null +++ b/plugins/OStatus/classes/FeedSub.php @@ -0,0 +1,443 @@ +. + */ + +/** + * @package OStatusPlugin + * @maintainer Brion Vibber + */ + +/* +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; + } +} + +/** + * FeedSub handles low-level PubHubSubbub (PuSH) subscriptions. + * Higher-level behavior building OStatus stuff on top is handled + * under Ostatus_profile. + */ +class FeedSub extends Memcached_DataObject +{ + public $__table = 'feedsub'; + + public $id; + public $feeduri; + + // PuSH subscription data + public $huburi; + public $secret; + public $verify_token; + public $sub_state; // subscribe, active, unsubscribe, inactive + public $sub_start; + public $sub_end; + public $last_update; + + public $created; + public $modified; + + public /*static*/ function staticGet($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, + 'uri' => DB_DATAOBJECT_STR + DB_DATAOBJECT_NOTNULL, + 'huburi' => DB_DATAOBJECT_STR, + 'secret' => DB_DATAOBJECT_STR, + 'verify_token' => DB_DATAOBJECT_STR, + 'sub_state' => DB_DATAOBJECT_STR + DB_DATAOBJECT_NOTNULL, + 'sub_start' => DB_DATAOBJECT_STR + DB_DATAOBJECT_DATE + DB_DATAOBJECT_TIME, + 'sub_end' => DB_DATAOBJECT_STR + DB_DATAOBJECT_DATE + DB_DATAOBJECT_TIME, + 'last_update' => DB_DATAOBJECT_STR + DB_DATAOBJECT_DATE + DB_DATAOBJECT_TIME + DB_DATAOBJECT_NOTNULL, + 'created' => DB_DATAOBJECT_STR + DB_DATAOBJECT_DATE + DB_DATAOBJECT_TIME + DB_DATAOBJECT_NOTNULL, + 'modified' => 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('uri', 'varchar', + 255, false, 'UNI'), + new ColumnDef('huburi', 'text', + null, true), + new ColumnDef('verify_token', 'text', + null, true), + new ColumnDef('secret', 'text', + null, true), + new ColumnDef('sub_state', "enum('subscribe','active','unsubscribe','inactive')", + null, false), + new ColumnDef('sub_start', 'datetime', + null, true), + new ColumnDef('sub_end', 'datetime', + null, true), + new ColumnDef('last_update', 'datetime', + null, false), + new ColumnDef('created', 'datetime', + null, false), + new ColumnDef('modified', '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', 'uri' => '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 string $feeduri + * @return FeedSub + * @throws FeedSubException if feed is invalid or lacks PuSH setup + */ + public static function ensureFeed($feeduri) + { + $current = self::staticGet('uri', $feeduri); + if ($current) { + return $current; + } + + $discover = new FeedDiscovery(); + $discover->discoverFromFeedURL($feeduri); + + $huburi = $discover->getAtomLink('hub'); + if (!$huburi) { + throw new FeedSubNoHubException(); + } + + $feedsub = new FeedSub(); + $feedsub->uri = $feeduri; + $feedsub->huburi = $huburi; + $feedsub->sub_state = 'inactive'; + + $feedsub->created = common_sql_now(); + $feedsub->modified = common_sql_now(); + + $result = $feedsub->insert(); + if (empty($result)) { + throw new FeedDBException($feedsub); + } + + return $feedsub; + } + + /** + * Send a subscription request to the hub for this feed. + * The hub will later send us a confirmation POST to /main/push/callback. + * + * @return bool true on success, false on failure + * @throws ServerException if feed state is not valid + */ + public function subscribe($mode='subscribe') + { + if ($this->sub_state && $this->sub_state != 'inactive') { + throw new ServerException("Attempting to start PuSH subscription to feed in state $this->sub_state"); + } + if (empty($this->huburi)) { + if (common_config('feedsub', 'nohub')) { + // Fake it! We're just testing remote feeds w/o hubs. + return true; + } else { + throw new ServerException("Attempting to start PuSH subscription for feed with no hub"); + } + } + + return $this->doSubscribe('subscribe'); + } + + /** + * Send a PuSH unsubscription request to the hub for this feed. + * The hub will later send us a confirmation POST to /main/push/callback. + * + * @return bool true on success, false on failure + * @throws ServerException if feed state is not valid + */ + public function unsubscribe() { + if ($this->sub_state != 'active') { + throw new ServerException("Attempting to end PuSH subscription to feed in state $this->sub_state"); + } + if (empty($this->huburi)) { + if (common_config('feedsub', 'nohub')) { + // Fake it! We're just testing remote feeds w/o hubs. + return true; + } else { + throw new ServerException("Attempting to end PuSH subscription for feed with no hub"); + } + } + + return $this->doSubscribe('unsubscribe'); + } + + protected function doSubscribe($mode) + { + $orig = clone($this); + $this->verify_token = common_good_rand(16); + if ($mode == 'subscribe') { + $this->secret = common_good_rand(32); + } + $this->sub_state = $mode; + $this->update($orig); + unset($orig); + + 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->uri); + $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->uri"); + + $orig = clone($this); + $this->verify_token = null; + $this->sub_state = null; + $this->update($orig); + unset($orig); + + 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_now(); + + return $this->update($original); + } + + /** + * Save PuSH unsubscription confirmation. + * Wipes active PuSH sub info and resets state. + */ + public function confirmUnsubscribe() + { + $original = clone($this); + + // @fixme these should all be null, but DB_DataObject doesn't save null values...????? + $this->verify_token = ''; + $this->secret = ''; + $this->sub_state = ''; + $this->sub_start = ''; + $this->sub_end = ''; + $this->lastupdate = common_sql_now(); + + return $this->update($original); + } + + /** + * Accept updates from a PuSH feed. If validated, this object and the + * feed (as a DOMDocument) will be passed to the StartFeedSubHandleFeed + * and EndFeedSubHandleFeed events for processing. + * + * @param string $post source of Atom or RSS feed + * @param string $hmac X-Hub-Signature header, if present + */ + public function receive($post, $hmac) + { + common_log(LOG_INFO, __METHOD__ . ": packet for \"$this->uri\"! $hmac $post"); + + if ($this->sub_state != 'active') { + common_log(LOG_ERR, __METHOD__ . ": ignoring PuSH for inactive feed $this->uri (in state '$this->sub_state')"); + return; + } + + if ($post === '') { + common_log(LOG_ERR, __METHOD__ . ": ignoring empty post"); + return; + } + + if (!$this->validatePushSig($post, $hmac)) { + // Per spec we silently drop input with a bad sig, + // while reporting receipt to the server. + return; + } + + $feed = new DOMDocument(); + if (!$feed->loadXML($post)) { + // @fixme might help to include the err message + common_log(LOG_ERR, __METHOD__ . ": ignoring invalid XML"); + return; + } + + Event::handle('StartFeedSubReceive', array($this, $feed)); + Event::handle('EndFeedSubReceive', array($this, $feed)); + } + + /** + * Validate the given Atom chunk and HMAC signature against our + * shared secret that was set up at subscription time. + * + * If we don't have a shared secret, there should be no signature. + * If we we do, our the calculated HMAC should match theirs. + * + * @param string $post raw XML source as POSTed to us + * @param string $hmac X-Hub-Signature HTTP header value, or empty + * @return boolean true for a match + */ + protected function validatePushSig($post, $hmac) + { + if ($this->secret) { + if (preg_match('/^sha1=([0-9a-fA-F]{40})$/', $hmac, $matches)) { + $their_hmac = strtolower($matches[1]); + $our_hmac = hash_hmac('sha1', $post, $this->secret); + if ($their_hmac === $our_hmac) { + return true; + } + common_log(LOG_ERR, __METHOD__ . ": ignoring PuSH with bad SHA-1 HMAC: got $their_hmac, expected $our_hmac"); + } else { + common_log(LOG_ERR, __METHOD__ . ": ignoring PuSH with bogus HMAC '$hmac'"); + } + } else { + if (empty($hmac)) { + return true; + } else { + common_log(LOG_ERR, __METHOD__ . ": ignoring PuSH with unexpected HMAC '$hmac'"); + } + } + return false; + } + +} diff --git a/plugins/OStatus/classes/Ostatus_profile.php b/plugins/OStatus/classes/Ostatus_profile.php index 486417617c..1ce8ac4917 100644 --- a/plugins/OStatus/classes/Ostatus_profile.php +++ b/plugins/OStatus/classes/Ostatus_profile.php @@ -18,62 +18,24 @@ */ /** - * @package FeedSubPlugin + * @package OStatusPlugin * @maintainer Brion Vibber */ -/* -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 $uri; + 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 $modified; public /*static*/ function staticGet($k, $v=null) { @@ -91,56 +53,30 @@ class Ostatus_profile extends Memcached_DataObject function table() { - return array('id' => DB_DATAOBJECT_INT + DB_DATAOBJECT_NOTNULL, + return array('uri' => DB_DATAOBJECT_STR + 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); + 'modified' => 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), + return array(new ColumnDef('uri', 'varchar', + 255, false, 'PRI'), 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', + new ColumnDef('modified', 'datetime', null, false)); } @@ -169,12 +105,12 @@ class Ostatus_profile extends Memcached_DataObject function keyTypes() { - return array('id' => 'K', 'profile_id' => 'U', 'group_id' => 'U', 'feeduri' => 'U'); + return array('uri' => 'K', 'profile_id' => 'U', 'group_id' => 'U', 'feeduri' => 'U'); } function sequenceKey() { - return array('id', true, false); + return array(false, false, false); } /** @@ -201,101 +137,6 @@ class Ostatus_profile extends Memcached_DataObject 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'); - - try { - $local = $munger->profile(); - - if ($profile->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 = common_sql_now(); - $profile->lastupdate = common_sql_now(); - $result = $profile->insert(); - if (empty($result)) { - throw new FeedDBException($profile); - } - - $profile->query('COMMIT'); - } catch (FeedDBException $e) { - common_log_db_error($e->obj, 'INSERT', __FILE__); - $profile->query('ROLLBACK'); - return false; - } - - $avatar = $munger->getAvatar(); - if ($avatar) { - try { - $profile->updateAvatar($avatar); - } catch (Exception $e) { - common_log(LOG_ERR, "Exception setting OStatus avatar: " . - $e->getMessage()); - } - } - - return $profile; - } - - /** - * 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); - - // @fixme should we be using different ids? - $imagefile = new ImageFile($this->id, $temp_filename); - $filename = Avatar::filename($this->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. @@ -345,7 +186,7 @@ class Ostatus_profile extends Memcached_DataObject $xs->element( 'id', null, - $this->homeuri); // ? + $this->uri); // ? $xs->element('title', null, $self->getBestName()); $xs->element( @@ -369,6 +210,61 @@ class Ostatus_profile extends Memcached_DataObject return (strpos($this->feeduri, '/groups/') !== false); } + /** + * Subscribe a local user to this remote user. + * PuSH subscription will be started if necessary, and we'll + * send a Salmon notification to the remote server if available + * notifying them of the sub. + * + * @param User $user + * @return boolean success + * @throws FeedException + */ + public function subscribeLocalToRemote(User $user) + { + if ($this->isGroup()) { + throw new ServerException("Can't subscribe to a remote group"); + } + + if ($this->subscribe()) { + if ($user->subscribeTo($this->localProfile())) { + $this->notify($user->getProfile(), ActivityVerb::FOLLOW, $this); + return true; + } + } + return false; + } + + /** + * Mark this remote profile as subscribing to the given local user, + * and send appropriate notifications to the user. + * + * This will generally be in response to a subscription notification + * from a foreign site to our local Salmon response channel. + * + * @param User $user + * @return boolean success + */ + public function subscribeRemoteToLocal(User $user) + { + if ($this->isGroup()) { + throw new ServerException("Remote groups can't subscribe to local users"); + } + + // @fixme use regular channels for subbing, once they accept remote profiles + $sub = new Subscription(); + $sub->subscriber = $this->profile_id; + $sub->subscribed = $user->id; + $sub->created = common_sql_now(); // current time + + if ($sub->insert()) { + // @fixme use subs_notify() if refactored to take profiles? + mail_subscribe_notify_profile($user, $this->localProfile()); + return true; + } + return false; + } + /** * Send a subscription request to the hub for this feed. * The hub will later send us a confirmation POST to /main/push/callback. @@ -378,19 +274,14 @@ class Ostatus_profile extends Memcached_DataObject */ public function subscribe($mode='subscribe') { - if ($this->sub_state != '') { - throw new ServerException("Attempting to start PuSH subscription to feed in state $this->sub_state"); + $feedsub = FeedSub::ensureFeed($this->feeduri); + if ($feedsub->sub_state == 'active' || $feedsub->sub_state == 'subscribe') { + return true; + } else if ($feedsub->sub_state == '' || $feedsub->sub_state == 'inactive') { + return $feedsub->subscribe(); + } else if ('unsubscribe') { + throw new FeedSubException("Unsub is pending, can't subscribe..."); } - if (empty($this->huburi)) { - if (common_config('feedsub', 'nohub')) { - // Fake it! We're just testing remote feeds w/o hubs. - return true; - } else { - throw new ServerException("Attempting to start PuSH subscription for feed with no hub"); - } - } - - return $this->doSubscribe('subscribe'); } /** @@ -401,111 +292,14 @@ class Ostatus_profile extends Memcached_DataObject * @throws ServerException if feed state is not valid */ public function unsubscribe() { - if ($this->sub_state != 'active') { - throw new ServerException("Attempting to end PuSH subscription to feed in state $this->sub_state"); + $feedsub = FeedSub::staticGet('uri', $this->feeduri); + if ($feedsub->sub_state == 'active') { + return $feedsub->unsubscribe(); + } else if ($feedsub->sub_state == '' || $feedsub->sub_state == 'inactive' || $feedsub->sub_state == 'unsubscribe') { + return true; + } else if ($feedsub->sub_state == 'subscribe') { + throw new FeedSubException("Feed is awaiting subscription, can't unsub..."); } - if (empty($this->huburi)) { - if (common_config('feedsub', 'nohub')) { - // Fake it! We're just testing remote feeds w/o hubs. - return true; - } else { - throw new ServerException("Attempting to end PuSH subscription for feed with no hub"); - } - } - - return $this->doSubscribe('unsubscribe'); - } - - protected function doSubscribe($mode) - { - $orig = clone($this); - $this->verify_token = common_good_rand(16); - if ($mode == 'subscribe') { - $this->secret = common_good_rand(32); - } - $this->sub_state = $mode; - $this->update($orig); - unset($orig); - - 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"); - - $orig = clone($this); - $this->verify_token = null; - $this->sub_state = null; - $this->update($orig); - unset($orig); - - 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_now(); - - return $this->update($original); - } - - /** - * Save PuSH unsubscription confirmation. - * Wipes active PuSH sub info and resets state. - */ - public function confirmUnsubscribe() - { - $original = clone($this); - - // @fixme these should all be null, but DB_DataObject doesn't save null values...????? - $this->verify_token = ''; - $this->secret = ''; - $this->sub_state = ''; - $this->sub_start = ''; - $this->sub_end = ''; - $this->lastupdate = common_sql_now(); - - return $this->update($original); } /** @@ -543,10 +337,7 @@ class Ostatus_profile extends Memcached_DataObject $entry->elementEnd('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"); @@ -600,36 +391,10 @@ class Ostatus_profile extends Memcached_DataObject * Currently assumes that all items in the feed are new, * coming from a PuSH hub. * - * @param string $post source of Atom or RSS feed - * @param string $hmac X-Hub-Signature header, if present + * @param DOMDocument $feed */ - public function postUpdates($post, $hmac) + public function processFeed($feed) { - common_log(LOG_INFO, __METHOD__ . ": packet for \"$this->feeduri\"! $hmac $post"); - - if ($this->sub_state != 'active') { - common_log(LOG_ERR, __METHOD__ . ": ignoring PuSH for inactive feed $this->feeduri (in state '$this->sub_state')"); - return; - } - - if ($post === '') { - common_log(LOG_ERR, __METHOD__ . ": ignoring empty post"); - return; - } - - if (!$this->validatePushSig($post, $hmac)) { - // Per spec we silently drop input with a bad sig, - // while reporting receipt to the server. - return; - } - - $feed = new DOMDocument(); - if (!$feed->loadXML($post)) { - // @fixme might help to include the err message - common_log(LOG_ERR, __METHOD__ . ": ignoring invalid XML"); - return; - } - $entries = $feed->getElementsByTagNameNS(Activity::ATOM, 'entry'); if ($entries->length == 0) { common_log(LOG_ERR, __METHOD__ . ": no entries in feed update, ignoring"); @@ -642,40 +407,6 @@ class Ostatus_profile extends Memcached_DataObject } } - /** - * Validate the given Atom chunk and HMAC signature against our - * shared secret that was set up at subscription time. - * - * If we don't have a shared secret, there should be no signature. - * If we we do, our the calculated HMAC should match theirs. - * - * @param string $post raw XML source as POSTed to us - * @param string $hmac X-Hub-Signature HTTP header value, or empty - * @return boolean true for a match - */ - protected function validatePushSig($post, $hmac) - { - if ($this->secret) { - if (preg_match('/^sha1=([0-9a-fA-F]{40})$/', $hmac, $matches)) { - $their_hmac = strtolower($matches[1]); - $our_hmac = hash_hmac('sha1', $post, $this->secret); - if ($their_hmac === $our_hmac) { - return true; - } - common_log(LOG_ERR, __METHOD__ . ": ignoring PuSH with bad SHA-1 HMAC: got $their_hmac, expected $our_hmac"); - } else { - common_log(LOG_ERR, __METHOD__ . ": ignoring PuSH with bogus HMAC '$hmac'"); - } - } else { - if (empty($hmac)) { - return true; - } else { - common_log(LOG_ERR, __METHOD__ . ": ignoring PuSH with unexpected HMAC '$hmac'"); - } - } - return false; - } - /** * Process a posted entry from this feed source. * @@ -704,14 +435,14 @@ class Ostatus_profile extends Memcached_DataObject { if ($this->isGroup()) { // @fixme validate these profiles in some way! - $oprofile = $this->ensureActorProfile($activity); + $oprofile = self::ensureActorProfile($activity); } else { - $actorUri = $this->getActorProfileURI($activity); - if ($actorUri == $this->homeuri) { + $actorUri = self::getActorProfileURI($activity); + if ($actorUri == $this->uri) { // @fixme check if profile info has changed and update it } else { // @fixme drop or reject the messages once we've got the canonical profile URI recorded sanely - common_log(LOG_INFO, "OStatus: Warning: non-group post with unexpected author: $actorUri expected $this->homeuri"); + common_log(LOG_INFO, "OStatus: Warning: non-group post with unexpected author: $actorUri expected $this->uri"); //return; } $oprofile = $this; @@ -787,6 +518,65 @@ class Ostatus_profile extends Memcached_DataObject return false; } + /** + * @param string $profile_url + * @return Ostatus_profile + * @throws FeedSubException + */ + public static function ensureProfile($profile_uri) + { + // Get the canonical feed URI and check it + $discover = new FeedDiscovery(); + $feeduri = $discover->discoverFromURL($profile_uri); + + $feedsub = FeedSub::ensureFeed($feeduri, $discover->feed); + $huburi = $discover->getAtomLink('hub'); + $salmonuri = $discover->getAtomLink('salmon'); + + if (!$huburi) { + // We can only deal with folks with a PuSH hub + throw new FeedSubNoHubException(); + } + + // Ok this is going to be a terrible hack! + // Won't be suitable for groups, empty feeds, or getting + // info that's only available on the profile page. + $entries = $discover->feed->getElementsByTagNameNS(Activity::ATOM, 'entry'); + if (!$entries || $entries->length == 0) { + throw new FeedSubException('empty feed'); + } + $first = new Activity($entries->item(0), $discover->feed); + return self::ensureActorProfile($first, $feeduri); + } + + /** + * Download and update given avatar image + * @param string $url + * @throws Exception in various failure cases + */ + protected function updateAvatar($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); + + // @fixme should we be using different ids? + $imagefile = new ImageFile($this->id, $temp_filename); + $filename = Avatar::filename($this->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); + } + } + /** * Get an appropriate avatar image source URL, if available. * @@ -794,7 +584,7 @@ class Ostatus_profile extends Memcached_DataObject * @param DOMElement $feed * @return string */ - function getAvatar($actor, $feed) + protected static function getAvatar($actor, $feed) { $url = ''; $icon = ''; @@ -833,13 +623,18 @@ class Ostatus_profile extends Memcached_DataObject } /** - * @fixme move off of ostatus_profile or static? + * Fetch, or build if necessary, an Ostatus_profile for the actor + * in a given Activity Streams activity. + * + * @param Activity $activity + * @param string $feeduri if we already know the canonical feed URI! + * @return Ostatus_profile */ - function ensureActorProfile($activity) + public static function ensureActorProfile($activity, $feeduri=null) { - $profile = $this->getActorProfile($activity); + $profile = self::getActorProfile($activity); if (!$profile) { - $profile = $this->createActorProfile($activity); + $profile = self::createActorProfile($activity, $feeduri); } return $profile; } @@ -848,10 +643,10 @@ class Ostatus_profile extends Memcached_DataObject * @param Activity $activity * @return mixed matching Ostatus_profile or false if none known */ - function getActorProfile($activity) + protected static function getActorProfile($activity) { - $homeuri = $this->getActorProfileURI($activity); - return Ostatus_profile::staticGet('homeuri', $homeuri); + $homeuri = self::getActorProfileURI($activity); + return self::staticGet('uri', $homeuri); } /** @@ -859,7 +654,7 @@ class Ostatus_profile extends Memcached_DataObject * @return string * @throws ServerException */ - function getActorProfileURI($activity) + protected static function getActorProfileURI($activity) { $opts = array('allowed_schemes' => array('http', 'https')); $actor = $activity->actor; @@ -873,14 +668,19 @@ class Ostatus_profile extends Memcached_DataObject } /** - * + * @fixme validate stuff somewhere */ - function createActorProfile($activity) + protected static function createActorProfile($activity, $feeduri=null) { - $actor = $activity->actor(); - $homeuri = $this->getActivityProfileURI($activity); - $nickname = $this->getAuthorNick($activity); - $avatar = $this->getAvatar($actor, $feed); + $actor = $activity->actor; + $homeuri = self::getActorProfileURI($activity); + $nickname = self::getAuthorNick($activity); + $avatar = self::getAvatar($actor, $feed); + + if (!$homeuri) { + common_log(LOG_DEBUG, __METHOD__ . " empty actor profile URI: " . var_export($activity, true)); + throw new ServerException("No profile URI"); + } $profile = new Profile(); $profile->nickname = $nickname; @@ -894,9 +694,7 @@ class Ostatus_profile extends Memcached_DataObject // @todo lat/lon/location? $ok = $profile->insert(); - if ($ok) { - $this->updateAvatar($profile, $avatar); - } else { + if (!$ok) { throw new ServerException("Can't save local profile"); } @@ -904,11 +702,15 @@ class Ostatus_profile extends Memcached_DataObject // or need to split out some of the feed stuff // so we can leave it empty until later. $oprofile = new Ostatus_profile(); - $oprofile->homeuri = $homeuri; + $oprofile->uri = $homeuri; + if ($feeduri) { + $oprofile->feeduri = $feeduri; + } $oprofile->profile_id = $profile->id; $ok = $oprofile->insert(); if ($ok) { + $oprofile->updateAvatar($avatar); return $oprofile; } else { throw new ServerException("Can't save OStatus profile"); @@ -920,13 +722,13 @@ class Ostatus_profile extends Memcached_DataObject * @param Activity $activity * @return string */ - function getAuthorNick($activity) + protected static function getAuthorNick($activity) { // @fixme not technically part of the actor? foreach (array($activity->entry, $activity->feed) as $source) { - $author = ActivityUtil::child($source, 'author', Activity::ATOM); + $author = ActivityUtils::child($source, 'author', Activity::ATOM); if ($author) { - $name = ActivityUtil::child($author, 'name', Activity::ATOM); + $name = ActivityUtils::child($author, 'name', Activity::ATOM); if ($name) { return trim($name->textContent); } diff --git a/plugins/OStatus/lib/feeddiscovery.php b/plugins/OStatus/lib/feeddiscovery.php index 39985fc902..7afb71bdc1 100644 --- a/plugins/OStatus/lib/feeddiscovery.php +++ b/plugins/OStatus/lib/feeddiscovery.php @@ -48,6 +48,14 @@ class FeedSubNoFeedException extends FeedSubException { } +class FeedSubBadXmlException extends FeedSubException +{ +} + +class FeedSubNoHubException extends FeedSubException +{ +} + /** * Given a web page or feed URL, discover the final location of the feed * and return its current contents. @@ -57,21 +65,25 @@ class FeedSubNoFeedException extends FeedSubException * if ($feed->discoverFromURL($url)) { * print $feed->uri; * print $feed->type; - * processFeed($feed->body); + * processFeed($feed->feed); // DOMDocument * } */ class FeedDiscovery { public $uri; public $type; - public $body; + public $feed; - - public function feedMunger() + /** Post-initialize query helper... */ + public function getLink($rel, $type=null) { - require_once 'XML/Feed/Parser.php'; - $feed = new XML_Feed_Parser($this->body, false, false, true); // @fixme - return new FeedMunger($feed, $this->uri); + // @fixme check for non-Atom links in RSS2 feeds as well + return self::getAtomLink($rel, $type); + } + + public function getAtomLink($rel, $type=null) + { + return ActivityUtils::getLink($this->feed->documentElement, $rel, $type); } /** @@ -90,6 +102,7 @@ class FeedDiscovery $client = new HTTPClient(); $response = $client->get($url); } catch (HTTP_Request2_Exception $e) { + common_log(LOG_ERR, __METHOD__ . " Failure for $url - " . $e->getMessage()); throw new FeedSubBadURLException($e); } @@ -107,7 +120,12 @@ class FeedDiscovery return $this->initFromResponse($response); } - + + function discoverFromFeedURL($url) + { + return $this->discoverFromURL($url, false); + } + function initFromResponse($response) { if (!$response->isOk()) { @@ -122,16 +140,26 @@ class FeedDiscovery $type = $response->getHeader('Content-Type'); if (preg_match('!^(text/xml|application/xml|application/(rss|atom)\+xml)!i', $type)) { - $this->uri = $sourceurl; - $this->type = $type; - $this->body = $body; - return true; + return $this->init($sourceurl, $type, $body); } else { common_log(LOG_WARNING, "Unrecognized feed type $type for $sourceurl"); throw new FeedSubUnrecognizedTypeException($type); } } + function init($sourceurl, $type, $body) + { + $feed = new DOMDocument(); + if ($feed->loadXML($body)) { + $this->uri = $sourceurl; + $this->type = $type; + $this->feed = $feed; + return $this->uri; + } else { + throw new FeedSubBadXmlException($url); + } + } + /** * @param string $url source URL, used to resolve relative links * @param string $body HTML body text diff --git a/plugins/OStatus/lib/feedmunger.php b/plugins/OStatus/lib/feedmunger.php deleted file mode 100644 index e8c46de90e..0000000000 --- a/plugins/OStatus/lib/feedmunger.php +++ /dev/null @@ -1,350 +0,0 @@ -. - */ - -/** - * @package FeedSubPlugin - * @maintainer Brion Vibber - */ - -if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); } - -class FeedSubPreviewNotice extends Notice -{ - protected $fetched = true; - - function __construct($profile) - { - $this->profile = $profile; - $this->profile_id = 0; - } - - function getProfile() - { - return $this->profile; - } - - function find() - { - return true; - } - - function fetch() - { - $got = $this->fetched; - $this->fetched = false; - return $got; - } -} - -class FeedSubPreviewProfile extends Profile -{ - function getAvatar($width, $height=null) - { - return new FeedSubPreviewAvatar($width, $height, $this->avatar); - } -} - -class FeedSubPreviewAvatar extends Avatar -{ - function __construct($width, $height, $remote) - { - $this->remoteImage = $remote; - } - - function displayUrl() { - return $this->remoteImage; - } -} - -class FeedMunger -{ - /** - * @param XML_Feed_Parser $feed - */ - function __construct($feed, $url=null) - { - $this->feed = $feed; - $this->url = $url; - } - - function ostatusProfile() - { - $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()) - { - // XML_Feed_Parser gets confused by multiple elements. - $dom = $item->model; - - // Note that RSS feeds would embed an so this should work for both. - /// http://code.google.com/p/pubsubhubbub/wiki/RssFeeds - // - $links = $dom->getElementsByTagNameNS('http://www.w3.org/2005/Atom', 'link'); - for ($i = 0; $i < $links->length; $i++) { - $node = $links->item($i); - if ($node->hasAttributes()) { - $href = $node->attributes->getNamedItem('href'); - if ($href) { - $matches = 0; - foreach ($attribs as $name => $val) { - $attrib = $node->attributes->getNamedItem($name); - if ($attrib && $attrib->value == $val) { - $matches++; - } - } - if ($matches == count($attribs)) { - return $href->value; - } - } - } - } - return false; - } - - function getRssLink($item) - { - // XML_Feed_Parser gets confused by multiple elements. - $dom = $item->model; - - // Note that RSS feeds would embed an so this should work for both. - /// http://code.google.com/p/pubsubhubbub/wiki/RssFeeds - // - $links = $dom->getElementsByTagName('link'); - for ($i = 0; $i < $links->length; $i++) { - $node = $links->item($i); - if (!$node->hasAttributes()) { - return $node->textContent; - } - } - return false; - } - - function getAltLink($item) - { - // Check for an atom link... - $link = $this->getAtomLink($item, array('rel' => 'alternate', 'type' => 'text/html')); - if (!$link) { - $link = $this->getRssLink($item); - } - return $link; - } - - function getHubLink() - { - 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) { - $profile = new FeedSubPreviewProfile(); - } else { - $profile = new Profile(); - } - - // @todo validate/normalize nick? - $profile->nickname = $this->feed->title; - $profile->fullname = $this->feed->title; - $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? - - return $profile; - } - - function notice($index=1, $preview=false) - { - $entry = $this->feed->getEntryByOffset($index); - 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); // @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... - $feeduri = $this->getSelfLink(); - $remote = Ostatus_profile::staticGet('feeduri', $feeduri); - if ($remote) { - return $remote->profile_id; - } else { - throw new Exception("Can't find feed profile for $feeduri"); - } - } - - /** - * 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 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. - - $title = $entry->title; - $link = $this->getAltLink($entry); - 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, $link); - - // Trim link if needed... - if (mb_strlen($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; - } -}