gnu-social/plugins/OStatus/OStatusPlugin.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 OStatusPlugin
* @maintainer Brion Vibber <brion@status.net>
*/
if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
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set_include_path(get_include_path() . PATH_SEPARATOR . dirname(__FILE__) . '/extlib/');
class FeedSubException extends Exception
{
}
class OStatusPlugin extends Plugin
{
/**
* Hook for RouterInitialized event.
*
* @param Net_URL_Mapper $m path-to-action mapper
* @return boolean hook return
*/
function onRouterInitialized($m)
{
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// Discovery actions
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$m->connect('.well-known/host-meta',
array('action' => 'hostmeta'));
$m->connect('main/webfinger',
array('action' => 'webfinger'));
$m->connect('main/ostatus',
array('action' => 'ostatusinit'));
$m->connect('main/ostatus?nickname=:nickname',
array('action' => 'ostatusinit'), array('nickname' => '[A-Za-z0-9_-]+'));
$m->connect('main/ostatussub',
array('action' => 'ostatussub'));
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$m->connect('main/ostatussub',
array('action' => 'ostatussub'), array('feed' => '[A-Za-z0-9\.\/\:]+'));
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// PuSH actions
$m->connect('main/push/hub', array('action' => 'pushhub'));
$m->connect('main/push/callback/:feed',
array('action' => 'pushcallback'),
array('feed' => '[0-9]+'));
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// Salmon endpoint
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$m->connect('main/salmon/user/:id',
array('action' => 'usersalmon'),
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array('id' => '[0-9]+'));
$m->connect('main/salmon/group/:id',
array('action' => 'groupsalmon'),
array('id' => '[0-9]+'));
return true;
}
/**
* Set up queue handlers for outgoing hub pushes
* @param QueueManager $qm
* @return boolean hook return
*/
function onEndInitializeQueueManager(QueueManager $qm)
{
// Outgoing from our internal PuSH hub
$qm->connect('hubverify', 'HubVerifyQueueHandler');
$qm->connect('hubdistrib', 'HubDistribQueueHandler');
$qm->connect('hubout', 'HubOutQueueHandler');
// Incoming from a foreign PuSH hub
$qm->connect('pushinput', 'PushInputQueueHandler');
return true;
}
/**
* Put saved notices into the queue for pubsub distribution.
*/
function onStartEnqueueNotice($notice, &$transports)
{
$transports[] = 'hubdistrib';
return true;
}
/**
* Set up a PuSH hub link to our internal link for canonical timeline
* Atom feeds for users and groups.
*/
function onStartApiAtom($feed)
{
$id = null;
if ($feed instanceof AtomUserNoticeFeed) {
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$salmonAction = 'usersalmon';
$user = $feed->getUser();
$id = $user->id;
$profile = $user->getProfile();
$feed->setActivitySubject($profile->asActivityNoun('subject'));
} else if ($feed instanceof AtomGroupNoticeFeed) {
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$salmonAction = 'groupsalmon';
$group = $feed->getGroup();
$id = $group->id;
$feed->setActivitySubject($group->asActivitySubject());
} else {
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return true;
}
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if (!empty($id)) {
$hub = common_config('ostatus', 'hub');
if (empty($hub)) {
// Updates will be handled through our internal PuSH hub.
$hub = common_local_url('pushhub');
}
$feed->addLink($hub, array('rel' => 'hub'));
// Also, we'll add in the salmon link
$salmon = common_local_url($salmonAction, array('id' => $id));
$feed->addLink($salmon, array('rel' => 'salmon'));
}
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return true;
}
/**
* Automatically load the actions and libraries used by the plugin
*
* @param Class $cls the class
*
* @return boolean hook return
*
*/
function onAutoload($cls)
{
$base = dirname(__FILE__);
$lower = strtolower($cls);
$map = array('activityverb' => 'activity',
'activityobject' => 'activity',
'activityutils' => 'activity');
if (isset($map[$lower])) {
$lower = $map[$lower];
}
$files = array("$base/classes/$cls.php",
"$base/lib/$lower.php");
if (substr($lower, -6) == 'action') {
$files[] = "$base/actions/" . substr($lower, 0, -6) . ".php";
}
foreach ($files as $file) {
if (file_exists($file)) {
include_once $file;
return false;
}
}
return true;
}
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/**
* Add in an OStatus subscribe button
*/
function onStartProfileRemoteSubscribe($output, $profile)
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{
$cur = common_current_user();
if (empty($cur)) {
// Add an OStatus subscribe
$output->elementStart('li', 'entity_subscribe');
$url = common_local_url('ostatusinit',
array('nickname' => $profile->nickname));
$output->element('a', array('href' => $url,
'class' => 'entity_remote_subscribe'),
_m('Subscribe'));
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$output->elementEnd('li');
}
return false;
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}
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/**
* Check if we've got remote replies to send via Salmon.
*
* @fixme push webfinger lookup & sending to a background queue
* @fixme also detect short-form name for remote subscribees where not ambiguous
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*/
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function onEndNoticeSave($notice)
{
$mentioned = $notice->getReplies();
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foreach ($mentioned as $profile_id) {
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$oprofile = Ostatus_profile::staticGet('profile_id', $profile_id);
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if (!empty($oprofile) && !empty($oprofile->salmonuri)) {
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common_log(LOG_INFO, "Sending notice '{$notice->uri}' to remote profile '{$oprofile->uri}'.");
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// FIXME: this needs to go out in a queue handler
$xml = '<?xml version="1.0" encoding="UTF-8" ?' . '>';
$xml .= $notice->asAtomEntry(true, true);
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$salmon = new Salmon();
$salmon->post($oprofile->salmonuri, $xml);
}
}
}
/**
*
*/
function onEndFindMentions($sender, $text, &$mentions)
{
preg_match_all('/(?:^|\s+)@((?:\w+\.)*\w+@(?:\w+\.)*\w+(?:\w+\-\w+)*\.\w+)/',
$text,
$wmatches,
PREG_OFFSET_CAPTURE);
foreach ($wmatches[1] as $wmatch) {
$webfinger = $wmatch[0];
$oprofile = Ostatus_profile::ensureWebfinger($webfinger);
if (!empty($oprofile)) {
$profile = $oprofile->localProfile();
$mentions[] = array('mentioned' => array($profile),
'text' => $wmatch[0],
'position' => $wmatch[1],
'url' => $profile->profileurl);
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}
}
return true;
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}
/**
* Notify remote server and garbage collect unused feeds on unsubscribe.
* @fixme send these operations to background queues
*
* @param User $user
* @param Profile $other
* @return hook return value
*/
function onEndUnsubscribe($profile, $other)
{
$user = User::staticGet('id', $profile->id);
if (empty($user)) {
return true;
}
$oprofile = Ostatus_profile::staticGet('profile_id', $other->id);
if (empty($oprofile)) {
return true;
}
// Drop the PuSH subscription if there are no other subscribers.
if ($other->subscriberCount() == 0) {
common_log(LOG_INFO, "Unsubscribing from now-unused feed $oprofile->feeduri");
$oprofile->unsubscribe();
}
$act = new Activity();
$act->verb = ActivityVerb::UNFOLLOW;
$act->id = TagURI::mint('unfollow:%d:%d:%s',
$profile->id,
$other->id,
common_date_iso8601(time()));
$act->time = time();
$act->title = _("Unfollow");
$act->content = sprintf(_("%s stopped following %s."),
$profile->getBestName(),
$other->getBestName());
$act->actor = ActivityObject::fromProfile($profile);
$act->object = ActivityObject::fromProfile($other);
$oprofile->notifyActivity($act);
return true;
}
/**
* Make sure necessary tables are filled out.
*/
function onCheckSchema() {
$schema = Schema::get();
$schema->ensureTable('ostatus_profile', Ostatus_profile::schemaDef());
$schema->ensureTable('ostatus_source', Ostatus_source::schemaDef());
$schema->ensureTable('feedsub', FeedSub::schemaDef());
$schema->ensureTable('hubsub', HubSub::schemaDef());
return true;
}
function onEndShowStatusNetStyles($action) {
$action->cssLink(common_path('plugins/OStatus/theme/base/css/ostatus.css'));
return true;
}
function onEndShowStatusNetScripts($action) {
$action->script(common_path('plugins/OStatus/js/ostatus.js'));
return true;
}
/**
* Override the "from ostatus" bit in notice lists to link to the
* original post and show the domain it came from.
*
* @param Notice in $notice
* @param string out &$name
* @param string out &$url
* @param string out &$title
* @return mixed hook return code
*/
function onStartNoticeSourceLink($notice, &$name, &$url, &$title)
{
if ($notice->source == 'ostatus') {
$bits = parse_url($notice->uri);
$domain = $bits['host'];
$name = $domain;
$url = $notice->uri;
$title = sprintf(_m("Sent from %s via OStatus"), $domain);
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);
} else {
common_log(LOG_DEBUG, "No ostatus profile for incoming feed $feedsub->uri");
}
}
function onEndSubscribe($subscriber, $other)
{
$user = User::staticGet('id', $subscriber->id);
if (empty($user)) {
return true;
}
$oprofile = Ostatus_profile::staticGet('profile_id', $other->id);
if (empty($oprofile)) {
return true;
}
$act = new Activity();
$act->verb = ActivityVerb::FOLLOW;
$act->id = TagURI::mint('follow:%d:%d:%s',
$subscriber->id,
$other->id,
common_date_iso8601(time()));
$act->time = time();
$act->title = _("Follow");
$act->content = sprintf(_("%s is now following %s."),
$subscriber->getBestName(),
$other->getBestName());
$act->actor = ActivityObject::fromProfile($subscriber);
$act->object = ActivityObject::fromProfile($other);
$oprofile->notifyActivity($act);
return true;
}
/**
* When one of our local users tries to join a remote group,
* notify the remote server. If the notification is rejected,
* deny the join.
*
* @param User_group $group
* @param User $user
*
* @return mixed hook return value
*/
function onStartJoinGroup($group, $user)
{
$oprofile = Ostatus_profile::staticGet('group_id', $group->id);
if ($oprofile) {
$member = Profile::staticGet($user->id);
$act = new Activity();
$act->id = TagURI::mint('join:%d:%d:%s',
$member->id,
$group->id,
common_date_iso8601(time()));
$act->actor = ActivityObject::fromProfile($member);
$act->verb = ActivityVerb::JOIN;
$act->object = $oprofile->asActivityObject();
$act->time = time();
$act->title = _m("Join");
$act->content = sprintf(_m("%s has joined group %s."),
$member->getBestName(),
$oprofile->getBestName());
if ($oprofile->notifyActivity($act)) {
return true;
} else {
throw new ServerException(_m("Failed joining remote group."));
}
}
}
/**
* When one of our local users leaves a remote group, notify the remote
* server.
*
* @fixme Might be good to schedule a resend of the leave notification
* if it failed due to a transitory error. We've canceled the local
* membership already anyway, but if the remote server comes back up
* it'll be left with a stray membership record.
*
* @param User_group $group
* @param User $user
*
* @return mixed hook return value
*/
function onEndLeaveGroup($group, $user)
{
$oprofile = Ostatus_profile::staticGet('group_id', $group->id);
if ($oprofile) {
// Drop the PuSH subscription if there are no other subscribers.
$members = $group->getMembers(0, 1);
if ($members->N == 0) {
common_log(LOG_INFO, "Unsubscribing from now-unused group feed $oprofile->feeduri");
$oprofile->unsubscribe();
}
$member = Profile::staticGet($user->id);
$act = new Activity();
$act->id = TagURI::mint('leave:%d:%d:%s',
$member->id,
$group->id,
common_date_iso8601(time()));
$act->actor = ActivityObject::fromProfile($member);
$act->verb = ActivityVerb::LEAVE;
$act->object = $oprofile->asActivityObject();
$act->time = time();
$act->title = _m("Leave");
$act->content = sprintf(_m("%s has left group %s."),
$member->getBestName(),
$oprofile->getBestName());
$oprofile->notifyActivity($act);
}
}
/**
* Notify remote users when their notices get favorited.
*
* @param Profile or User $profile of local user doing the faving
* @param Notice $notice being favored
* @return hook return value
*/
function onEndFavorNotice(Profile $profile, Notice $notice)
{
$user = User::staticGet('id', $profile->id);
if (empty($user)) {
return true;
}
$oprofile = Ostatus_profile::staticGet('profile_id', $notice->profile_id);
if (empty($oprofile)) {
return true;
}
$act = new Activity();
$act->verb = ActivityVerb::FAVORITE;
$act->id = TagURI::mint('favor:%d:%d:%s',
$profile->id,
$notice->id,
common_date_iso8601(time()));
$act->time = time();
$act->title = _("Favor");
$act->content = sprintf(_("%s marked notice %s as a favorite."),
$profile->getBestName(),
$notice->uri);
$act->actor = ActivityObject::fromProfile($profile);
$act->object = ActivityObject::fromNotice($notice);
$oprofile->notifyActivity($act);
return true;
}
/**
* Notify remote users when their notices get de-favorited.
*
* @param Profile $profile Profile person doing the de-faving
* @param Notice $notice Notice being favored
*
* @return hook return value
*/
function onEndDisfavorNotice(Profile $profile, Notice $notice)
{
$user = User::staticGet('id', $profile->id);
if (empty($user)) {
return true;
}
$oprofile = Ostatus_profile::staticGet('profile_id', $notice->profile_id);
if (empty($oprofile)) {
return true;
}
$act = new Activity();
$act->verb = ActivityVerb::UNFAVORITE;
$act->id = TagURI::mint('disfavor:%d:%d:%s',
$profile->id,
$notice->id,
common_date_iso8601(time()));
$act->time = time();
$act->title = _("Disfavor");
$act->content = sprintf(_("%s marked notice %s as no longer a favorite."),
$profile->getBestName(),
$notice->uri);
$act->actor = ActivityObject::fromProfile($profile);
$act->object = ActivityObject::fromNotice($notice);
$oprofile->notifyActivity($act);
return true;
}
function onStartGetProfileUri($profile, &$uri)
{
$oprofile = Ostatus_profile::staticGet('profile_id', $profile->id);
if (!empty($oprofile)) {
$uri = $oprofile->uri;
return false;
}
return true;
}
function onStartShowSubscriptionsContent($action)
{
$user = common_current_user();
if ($user && ($user->id == $action->profile->id)) {
$action->elementStart('div', 'entity_actions');
$action->elementStart('p', array('id' => 'entity_remote_subscribe',
'class' => 'entity_subscribe'));
$action->element('a', array('href' => common_local_url('ostatussub'),
'class' => 'entity_remote_subscribe')
, _m('Subscribe to remote user'));
$action->elementEnd('p');
$action->elementEnd('div');
}
return true;
}
}