forked from GNUsocial/gnu-social
515 lines
15 KiB
PHP
515 lines
15 KiB
PHP
<?php
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// This file is part of GNU social - https://www.gnu.org/software/social
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//
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// GNU social 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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// GNU social 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 GNU social. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Superclass for plugins that do "real time" updates of timelines using Ajax
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*
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* @category Plugin
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* @package GNUsocial
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* @author Evan Prodromou <evan@status.net>
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* @author Mikael Nordfeldth <mmn@hethane.se>
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* @copyright 2009-2019 Free Software Foundation, Inc http://www.fsf.org
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* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
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*/
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defined('GNUSOCIAL') || die();
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/**
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* Superclass for plugin to do realtime updates
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*
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* Based on experience with the Comet and Meteor plugins,
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* this superclass extracts out some of the common functionality
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*
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* Currently depends on the Favorite module.
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*
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* @category Plugin
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* @package GNUsocial
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* @author Evan Prodromou <evan@status.net>
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* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
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*/
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class RealtimePlugin extends Plugin
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{
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protected $showurl = null;
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/**
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* When it's time to initialize the plugin, calculate and
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* pass the URLs we need.
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*/
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public function onInitializePlugin()
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{
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// FIXME: need to find a better way to pass this pattern in
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$this->showurl = common_local_url(
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'shownotice',
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['notice' => '0000000000']
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);
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return true;
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}
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public function onCheckSchema()
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{
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$schema = Schema::get();
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$schema->ensureTable('realtime_channel', Realtime_channel::schemaDef());
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return true;
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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 URLMapper $m path-to-action mapper
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* @return bool hook return
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* @throws Exception
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*/
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public function onRouterInitialized(URLMapper $m)
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{
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$m->connect(
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'main/channel/:channelkey/keepalive',
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['action' => 'keepalivechannel'],
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['channelkey' => '[a-z0-9]{32}']
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);
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$m->connect(
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'main/channel/:channelkey/close',
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['action' => 'closechannel'],
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['channelkey' => '[a-z0-9]{32}']
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);
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return true;
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}
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public function onEndShowScripts(Action $action)
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{
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$channel = $this->_getChannel($action);
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if (empty($channel)) {
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return true;
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}
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$timeline = $this->_pathToChannel([$channel->channel_key]);
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// If there's not a timeline on this page,
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// just return true
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if (empty($timeline)) {
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return true;
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}
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$base = $action->selfUrl();
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if (mb_strstr($base, '?')) {
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$url = $base . '&realtime=1';
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} else {
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$url = $base . '?realtime=1';
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}
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$scripts = $this->_getScripts();
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foreach ($scripts as $script) {
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$action->script($script);
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}
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$user = common_current_user();
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if (!empty($user->id)) {
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$user_id = $user->id;
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} else {
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$user_id = 0;
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}
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if ($action->boolean('realtime')) {
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$realtimeUI = ' RealtimeUpdate.initPopupWindow();';
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} else {
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$pluginPath = common_path('plugins/Realtime/');
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$keepalive = common_local_url('keepalivechannel', ['channelkey' => $channel->channel_key]);
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$close = common_local_url('closechannel', ['channelkey' => $channel->channel_key]);
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$realtimeUI = ' RealtimeUpdate.initActions('.json_encode($url).', '.json_encode($timeline).', '.json_encode($pluginPath).', '.json_encode($keepalive).', '.json_encode($close).'); ';
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}
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$script = ' $(document).ready(function() { '.
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$realtimeUI.
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$this->_updateInitialize($timeline, $user_id).
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'}); ';
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$action->inlineScript($script);
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return true;
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}
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public function onEndShowStylesheets(Action $action)
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{
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$urlpath = self::staticPath(
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str_replace('Plugin', '', __CLASS__),
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'css/realtimeupdate.css'
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);
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$action->cssLink($urlpath, null, 'screen, projection, tv');
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return true;
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}
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public function onHandleQueuedNotice(Notice $notice)
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{
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$paths = [];
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// Add to the author's timeline
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try {
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$profile = $notice->getProfile();
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} catch (Exception $e) {
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$this->log(LOG_ERR, $e->getMessage());
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return true;
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}
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try {
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$user = $profile->getUser();
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$paths[] = ['showstream', $user->nickname, null];
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} catch (NoSuchUserException $e) {
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// We really should handle the remote profile views too
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$user = null;
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}
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// Add to the public timeline
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$is_local = intval($notice->is_local);
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if ($is_local === Notice::LOCAL_PUBLIC ||
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($is_local === Notice::REMOTE && !common_config('public', 'localonly'))) {
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$paths[] = ['public', null, null];
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}
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// Add to the tags timeline
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$tags = $this->getNoticeTags($notice);
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if (!empty($tags)) {
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foreach ($tags as $tag) {
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$paths[] = ['tag', $tag, null];
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}
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}
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// Add to inbox timelines
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// XXX: do a join
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$ni = $notice->whoGets();
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foreach (array_keys($ni) as $user_id) {
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$user = User::getKV('id', $user_id);
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$paths[] = ['all', $user->getNickname(), null];
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}
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// Add to the replies timeline
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$reply = new Reply();
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$reply->notice_id = $notice->id;
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if ($reply->find()) {
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while ($reply->fetch()) {
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$user = User::getKV('id', $reply->profile_id);
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if (!empty($user)) {
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$paths[] = ['replies', $user->getNickname(), null];
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}
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}
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}
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// Add to the group timeline
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// XXX: join
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$gi = new Group_inbox();
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$gi->notice_id = $notice->id;
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if ($gi->find()) {
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while ($gi->fetch()) {
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$ug = User_group::getKV('id', $gi->group_id);
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$paths[] = ['showgroup', $ug->getNickname(), null];
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}
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}
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if (count($paths) > 0) {
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$json = $this->noticeAsJson($notice);
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$this->_connect();
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// XXX: We should probably fan-out here and do a
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// new queue item for each path
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foreach ($paths as $path) {
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list($action, $arg1, $arg2) = $path;
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$channels = Realtime_channel::getAllChannels($action, $arg1, $arg2);
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$this->log(LOG_INFO, sprintf(
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_("%d candidate channels for notice %d"),
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count($channels),
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$notice->id
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));
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foreach ($channels as $channel) {
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// XXX: We should probably fan-out here and do a
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// new queue item for each user/path combo
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if (is_null($channel->user_id)) {
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$profile = null;
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} else {
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$profile = Profile::getKV('id', $channel->user_id);
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}
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if ($notice->inScope($profile)) {
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$this->log(
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LOG_INFO,
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sprintf(
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_m("Delivering notice %d to channel (%s, %s, %s) for user '%s'"),
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$notice->id,
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$channel->action,
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$channel->arg1,
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$channel->arg2,
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($profile ? $profile->getNickname() : '<public>')
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)
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);
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$timeline = $this->_pathToChannel([$channel->channel_key]);
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$this->_publish($timeline, $json);
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}
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}
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}
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$this->_disconnect();
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}
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return true;
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}
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public function onStartShowBody(Action $action)
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{
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$realtime = $action->boolean('realtime');
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if (!$realtime) {
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return true;
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}
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$action->elementStart(
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'body',
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(common_current_user() ? [
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'id' => $action->trimmed('action'),
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'class' => 'user_in realtime-popup',
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] : [
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'id' => $action->trimmed('action'),
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'class'=> 'realtime-popup',
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])
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);
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// XXX hack to deal with JS that tries to get the
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// root url from page output
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$action->elementStart('address');
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if (common_config('singleuser', 'enabled')) {
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$user = User::singleUser();
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$url = common_local_url('showstream', ['nickname' => $user->nickname]);
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} else {
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$url = common_local_url('public');
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}
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$action->element(
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'a',
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['class' => 'url',
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'href' => $url],
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''
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);
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$action->elementEnd('address');
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$action->showContentBlock();
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$action->showScripts();
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$action->elementEnd('body');
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return false; // No default processing
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}
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public function noticeAsJson(Notice $notice)
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{
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// FIXME: this code should be abstracted to a neutral third
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// party, like Notice::asJson(). I'm not sure of the ethics
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// of refactoring from within a plugin, so I'm just abusing
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// the ApiAction method. Don't do this unless you're me!
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$act = new ApiAction('/dev/null');
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$arr = $act->twitterStatusArray($notice, true);
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$arr['url'] = $notice->getUrl(true);
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$arr['html'] = htmlspecialchars($notice->getRendered());
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$arr['source'] = htmlspecialchars($arr['source']);
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$arr['conversation_url'] = $notice->getConversationUrl();
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$profile = $notice->getProfile();
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$arr['user']['profile_url'] = $profile->profileurl;
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// Add needed repeat data
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if (!empty($notice->repeat_of)) {
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$original = Notice::getKV('id', $notice->repeat_of);
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if ($original instanceof Notice) {
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$arr['retweeted_status']['url'] = $original->getUrl(true);
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$arr['retweeted_status']['html'] = htmlspecialchars($original->getRendered());
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$arr['retweeted_status']['source'] = htmlspecialchars($original->source);
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$originalProfile = $original->getProfile();
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$arr['retweeted_status']['user']['profile_url'] = $originalProfile->profileurl;
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$arr['retweeted_status']['conversation_url'] = $original->getConversationUrl();
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}
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unset($original);
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}
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return $arr;
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}
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public function getNoticeTags(Notice $notice)
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{
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$tags = null;
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$nt = new Notice_tag();
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$nt->notice_id = $notice->id;
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if ($nt->find()) {
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$tags = [];
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while ($nt->fetch()) {
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$tags[] = $nt->tag;
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}
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}
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$nt->free();
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$nt = null;
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return $tags;
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}
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public function _getScripts(): array
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{
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$urlpath = self::staticPath(
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str_replace('Plugin', '', __CLASS__),
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'js/realtimeupdate.js'
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);
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return [$urlpath];
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}
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/**
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* Export any i18n messages that need to be loaded at runtime...
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*
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* @param Action $action
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* @param array $messages
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*
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* @return bool hook return value
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* @throws Exception
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*/
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public function onEndScriptMessages(Action $action, array &$messages)
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{
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// TRANS: Text label for realtime view "play" button, usually replaced by an icon.
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$messages['realtime_play'] = _m('BUTTON', 'Play');
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// TRANS: Tooltip for realtime view "play" button.
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$messages['realtime_play_tooltip'] = _m('TOOLTIP', 'Play');
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// TRANS: Text label for realtime view "pause" button
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$messages['realtime_pause'] = _m('BUTTON', 'Pause');
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// TRANS: Tooltip for realtime view "pause" button
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$messages['realtime_pause_tooltip'] = _m('TOOLTIP', 'Pause');
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// TRANS: Text label for realtime view "popup" button, usually replaced by an icon.
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$messages['realtime_popup'] = _m('BUTTON', 'Pop up');
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// TRANS: Tooltip for realtime view "popup" button.
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$messages['realtime_popup_tooltip'] = _m('TOOLTIP', 'Pop up in a window');
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return true;
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}
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public function _updateInitialize($timeline, int $user_id)
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{
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return "RealtimeUpdate.init($user_id, \"$this->showurl\"); ";
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}
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public function _connect()
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{
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}
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public function _publish($timeline, $json)
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{
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}
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public function _disconnect()
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{
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}
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public function _pathToChannel(array $path): string
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{
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return '';
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}
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public function _getTimeline(Action $action)
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{
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$channel = $this->_getChannel($action);
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if (empty($channel)) {
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return null;
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}
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return $this->_pathToChannel([$channel->channel_key]);
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}
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public function _getChannel(Action $action)
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{
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$timeline = null;
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$arg1 = null;
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$arg2 = null;
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$action_name = $action->trimmed('action');
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// FIXME: lists
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// FIXME: search (!)
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// FIXME: profile + tag
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switch ($action_name) {
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case 'public':
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// no arguments
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break;
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case 'tag':
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$tag = $action->trimmed('tag');
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if (!empty($tag)) {
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$arg1 = $tag;
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} else {
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$this->log(LOG_NOTICE, "Unexpected 'tag' action without tag argument");
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return null;
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}
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break;
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case 'showstream':
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case 'all':
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case 'replies':
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case 'showgroup':
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$nickname = common_canonical_nickname($action->trimmed('nickname'));
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if (!empty($nickname)) {
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$arg1 = $nickname;
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} else {
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$this->log(LOG_NOTICE, "Unexpected $action_name action without nickname argument.");
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return null;
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}
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break;
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default:
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return null;
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}
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$user = common_current_user();
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$user_id = (!empty($user)) ? $user->id : null;
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$channel = Realtime_channel::getChannel(
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$user_id,
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$action_name,
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$arg1,
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$arg2
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);
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return $channel;
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}
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public function onStartReadWriteTables(&$alwaysRW, &$rwdb)
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{
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$alwaysRW[] = 'realtime_channel';
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return true;
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}
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}
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