diff options
Diffstat (limited to 'plugins/OStatus/classes/Feedinfo.php')
| -rw-r--r-- | plugins/OStatus/classes/Feedinfo.php | 345 |
1 files changed, 345 insertions, 0 deletions
diff --git a/plugins/OStatus/classes/Feedinfo.php b/plugins/OStatus/classes/Feedinfo.php new file mode 100644 index 000000000..107faf012 --- /dev/null +++ b/plugins/OStatus/classes/Feedinfo.php @@ -0,0 +1,345 @@ +<?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: + + $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 $secret; + 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, + 'secret' => DB_DATAOBJECT_STR, + '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('secret', 'varchar', + 64, 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_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'); // @fixme we'll need a profile_id key at least + } + + function sequenceKey() + { + return array('id', true, false); + } + + /** + * 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'); + + // Awful hack! Awful hack! + $feedinfo->verify = common_good_rand(16); + $feedinfo->secret = common_good_rand(32); + + try { + $profile = $munger->profile(); + $result = $profile->insert(); + if (empty($result)) { + throw new FeedDBException($profile); + } + + $avatar = $munger->getAvatar(); + if ($avatar) { + // @fixme this should be better encapsulated + // ripped from oauthstore.php (for old OMB client) + $temp_filename = tempnam(sys_get_temp_dir(), 'listener_avatar'); + copy($avatar, $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)); + $profile->setOriginal($filename); + } + + $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 $feedinfo; + } + + /** + * Send a subscription request to the hub for this feed. + * The hub will later send us a confirmation POST to /feedsub/callback. + * + * @return bool true on success, false on failure + */ + public function subscribe() + { + if (common_config('feedsub', 'nohub')) { + // Fake it! We're just testing remote feeds w/o hubs. + return true; + } + // @fixme use the verification token + #$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' => 'subscribe', + '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; + } + } + + /** + * 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]); + $our_hmac = sha1($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); + $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 = $notice->uri; + if ($dupe->find(true)) { + 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"); + } + } +} |