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-rw-r--r--plugins/OStatus/classes/Feedinfo.php390
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diff --git a/plugins/OStatus/classes/Feedinfo.php b/plugins/OStatus/classes/Feedinfo.php
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-<?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,
- 'group_id' => DB_DATAOBJECT_INT,
- '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, true),
- new ColumnDef('group_id', 'integer',
- null, true),
- 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
- * @param boolean $isGroup is this a group record?
- * @return Feedinfo
- */
- public static function ensureProfile($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 = $profile->id;
- if ($feedinfo->isGroup()) {
- $group = new User_group();
- $group->nickname = $profile->nickname . '@remote'; // @fixme
- $group->fullname = $profile->fullname;
- $group->homepage = $profile->homepage;
- $group->location = $profile->location;
- $group->created = $profile->created;
- $group->insert();
-
- if ($avatar) {
- $group->setOriginal($filename);
- }
-
- $feedinfo->group_id = $group->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 $feedinfo;
- }
-
- /**
- * Damn dirty hack!
- */
- function isGroup()
- {
- return (strpos($this->feeduri, '/groups/') !== false);
- }
-
- /**
- * Send a subscription request to the hub for this feed.
- * The hub will later send us a confirmation POST to /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)) {
- // @fixme we might have to do individual and group delivery separately!
- 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));
- }
- common_log(LOG_INFO, __METHOD__ . ": saved notice {$notice->id} for entry $index of update to \"{$this->feeduri}\"");
-
- 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");
- }
- }
-}