forked from GNUsocial/gnu-social
264 lines
8.3 KiB
PHP
264 lines
8.3 KiB
PHP
<?php
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/*
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StatusNet Plugin: 0.9
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Plugin Name: FeedSub
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Plugin URI: http://status.net/wiki/Feed_subscription
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Description: FeedSub allows subscribing to real-time updates from external feeds supporting PubHubSubbub protocol.
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Version: 0.1
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Author: Brion Vibber <brion@status.net>
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Author URI: http://status.net/
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*/
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/*
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* StatusNet - the distributed open-source microblogging tool
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* Copyright (C) 2009, StatusNet, Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @package FeedSubPlugin
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* @maintainer Brion Vibber <brion@status.net>
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*/
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if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
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define('FEEDSUB_SERVICE', 100); // fixme -- avoid hardcoding these?
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// We bundle the XML_Parse_Feed library...
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set_include_path(get_include_path() . PATH_SEPARATOR . dirname(__FILE__) . '/extlib');
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class FeedSubException extends Exception
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{
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}
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class OStatusPlugin extends Plugin
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{
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/**
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* Hook for RouterInitialized event.
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*
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* @param Net_URL_Mapper $m path-to-action mapper
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* @return boolean hook return
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*/
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function onRouterInitialized($m)
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{
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// Discovery actions
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$m->connect('.well-known/host-meta',
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array('action' => 'hostmeta'));
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$m->connect('main/webfinger',
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array('action' => 'webfinger'));
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$m->connect('main/ostatus',
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array('action' => 'ostatusinit'));
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$m->connect('main/ostatus?nickname=:nickname',
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array('action' => 'ostatusinit'), array('nickname' => '[A-Za-z0-9_-]+'));
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$m->connect('main/ostatussub',
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array('action' => 'ostatussub'));
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$m->connect('main/ostatussub',
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array('action' => 'ostatussub'), array('feed' => '[A-Za-z0-9\.\/\:]+'));
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// PuSH actions
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$m->connect('main/push/hub', array('action' => 'pushhub'));
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$m->connect('main/push/callback/:feed',
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array('action' => 'pushcallback'),
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array('feed' => '[0-9]+'));
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$m->connect('settings/feedsub',
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array('action' => 'feedsubsettings'));
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// Salmon endpoint
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$m->connect('main/salmon/user/:id',
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array('action' => 'salmon'),
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array('id' => '[0-9]+'));
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return true;
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}
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/**
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* Set up queue handlers for outgoing hub pushes
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* @param QueueManager $qm
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* @return boolean hook return
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*/
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function onEndInitializeQueueManager(QueueManager $qm)
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{
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$qm->connect('hubverify', 'HubVerifyQueueHandler');
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$qm->connect('hubdistrib', 'HubDistribQueueHandler');
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$qm->connect('hubout', 'HubOutQueueHandler');
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return true;
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}
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/**
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* Put saved notices into the queue for pubsub distribution.
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*/
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function onStartEnqueueNotice($notice, &$transports)
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{
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$transports[] = 'hubdistrib';
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return true;
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}
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/**
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* Set up a PuSH hub link to our internal link for canonical timeline
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* Atom feeds for users and groups.
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*/
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function onStartApiAtom(Action $action)
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{
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if ($action instanceof ApiTimelineUserAction || $action instanceof ApiTimelineGroupAction) {
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$id = $action->arg('id');
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if (strval(intval($id)) === strval($id)) {
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// Canonical form of id in URL? These are used for OStatus syndication.
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$hub = common_config('ostatus', 'hub');
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if (empty($hub)) {
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// Updates will be handled through our internal PuSH hub.
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$hub = common_local_url('pushhub');
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}
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$action->element('link', array('rel' => 'hub',
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'href' => $hub));
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// Also, we'll add in the salmon link
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$action->element('link', array('rel' => 'salmon',
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'href' => common_local_url('salmon')));
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}
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}
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return true;
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}
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/**
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* Add the feed settings page to the Connect Settings menu
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*
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* @param Action &$action The calling page
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*
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* @return boolean hook return
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*/
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function onEndConnectSettingsNav(&$action)
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{
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$action_name = $action->trimmed('action');
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$action->menuItem(common_local_url('feedsubsettings'),
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_m('Feeds'),
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_m('Feed subscription options'),
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$action_name === 'feedsubsettings');
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return true;
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}
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/**
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* Automatically load the actions and libraries used by the plugin
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*
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* @param Class $cls the class
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*
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* @return boolean hook return
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*
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*/
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function onAutoload($cls)
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{
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$base = dirname(__FILE__);
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$lower = strtolower($cls);
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$files = array("$base/classes/$cls.php",
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"$base/lib/$lower.php");
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if (substr($lower, -6) == 'action') {
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$files[] = "$base/actions/" . substr($lower, 0, -6) . ".php";
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}
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foreach ($files as $file) {
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if (file_exists($file)) {
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include_once $file;
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return false;
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}
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}
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return true;
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}
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/**
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* Add in an OStatus subscribe button
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*/
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function onStartProfilePageActionsElements($output, $profile)
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{
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$cur = common_current_user();
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if (empty($cur)) {
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// Add an OStatus subscribe
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$output->elementStart('li', 'entity_subscribe');
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$url = common_local_url('ostatusinit',
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array('nickname' => $profile->nickname));
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$output->element('a', array('href' => $url,
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'class' => 'entity_remote_subscribe'),
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_('OStatus'));
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$output->elementEnd('li');
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}
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}
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/**
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* Check if we've got some Salmon stuff to send
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*/
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function onEndNoticeSave($notice)
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{
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$count = preg_match_all('/(\w+\.)*\w+@(\w+\.)*\w+(\w+\-\w+)*\.\w+/', $notice->content, $matches);
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if ($count) {
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foreach ($matches[0] as $webfinger) {
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// Check to see if we've got an actual webfinger
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$w = new Webfinger;
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$endpoint_uri = '';
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$result = $w->lookup($webfinger);
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if (empty($result)) {
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continue;
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}
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foreach ($result->links as $link) {
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if ($link['rel'] == 'salmon') {
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$endpoint_uri = $link['href'];
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}
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}
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if (empty($endpoint_uri)) {
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continue;
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}
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$xml = '<?xml version="1.0" encoding="UTF-8" ?>';
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$xml .= $notice->asAtomEntry();
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$salmon = new Salmon();
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$salmon->post($endpoint_uri, $xml);
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}
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}
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}
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/**
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* Garbage collect unused feeds on unsubscribe
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*/
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function onEndUnsubscribe($user, $other)
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{
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$feed = Feedinfo::staticGet('profile_id', $other->id);
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if ($feed) {
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$sub = new Subscription();
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$sub->subscribed = $other->id;
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$sub->limit(1);
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if (!$sub->find(true)) {
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common_log(LOG_INFO, "Unsubscribing from now-unused feed $feed->feeduri on hub $feed->huburi");
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$feed->unsubscribe();
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}
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}
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return true;
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}
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function onCheckSchema() {
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$schema = Schema::get();
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$schema->ensureTable('feedinfo', Feedinfo::schemaDef());
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$schema->ensureTable('hubsub', HubSub::schemaDef());
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return true;
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}
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}
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