forked from GNUsocial/gnu-social
278 lines
8.3 KiB
PHP
278 lines
8.3 KiB
PHP
<?php
|
|
/*
|
|
* StatusNet - the distributed open-source microblogging tool
|
|
* Copyright (C) 2008, 2009, 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/>.
|
|
*/
|
|
|
|
if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
|
|
|
|
/**
|
|
* XMPP background connection manager for XMPP-using queue handlers,
|
|
* allowing them to send outgoing messages on the right connection.
|
|
*
|
|
* Input is handled during socket select loop, keepalive pings during idle.
|
|
* Any incoming messages will be forwarded to the main XmppDaemon process,
|
|
* which handles direct user interaction.
|
|
*
|
|
* In a multi-site queuedaemon.php run, one connection will be instantiated
|
|
* for each site being handled by the current process that has XMPP enabled.
|
|
*/
|
|
|
|
class XmppManager extends IoManager
|
|
{
|
|
protected $site = null;
|
|
protected $pingid = 0;
|
|
protected $lastping = null;
|
|
|
|
static protected $singletons = array();
|
|
|
|
const PING_INTERVAL = 120;
|
|
|
|
/**
|
|
* Fetch the singleton XmppManager for the current site.
|
|
* @return mixed XmppManager, or false if unneeded
|
|
*/
|
|
public static function get()
|
|
{
|
|
if (common_config('xmpp', 'enabled')) {
|
|
$site = common_config('site', 'server');
|
|
if (empty(self::$singletons[$site])) {
|
|
self::$singletons[$site] = new XmppManager();
|
|
}
|
|
return self::$singletons[$site];
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Tell the i/o master we need one instance for each supporting site
|
|
* being handled in this process.
|
|
*/
|
|
public static function multiSite()
|
|
{
|
|
return IoManager::INSTANCE_PER_SITE;
|
|
}
|
|
|
|
function __construct()
|
|
{
|
|
$this->site = common_config('site', 'server');
|
|
}
|
|
|
|
/**
|
|
* Initialize connection to server.
|
|
* @return boolean true on success
|
|
*/
|
|
public function start($master)
|
|
{
|
|
parent::start($master);
|
|
$this->switchSite();
|
|
|
|
require_once INSTALLDIR . "/lib/jabber.php";
|
|
|
|
# Low priority; we don't want to receive messages
|
|
|
|
common_log(LOG_INFO, "INITIALIZE");
|
|
$this->conn = jabber_connect($this->resource());
|
|
|
|
if (empty($this->conn)) {
|
|
common_log(LOG_ERR, "Couldn't connect to server.");
|
|
return false;
|
|
}
|
|
|
|
$this->conn->addEventHandler('message', 'forward_message', $this);
|
|
$this->conn->addEventHandler('reconnect', 'handle_reconnect', $this);
|
|
$this->conn->setReconnectTimeout(600);
|
|
jabber_send_presence("Send me a message to post a notice", 'available', null, 'available', -1);
|
|
|
|
return !is_null($this->conn);
|
|
}
|
|
|
|
/**
|
|
* Message pump is triggered on socket input, so we only need an idle()
|
|
* call often enough to trigger our outgoing pings.
|
|
*/
|
|
function timeout()
|
|
{
|
|
return self::PING_INTERVAL;
|
|
}
|
|
|
|
/**
|
|
* Lists the XMPP connection socket to allow i/o master to wake
|
|
* when input comes in here as well as from the queue source.
|
|
*
|
|
* @return array of resources
|
|
*/
|
|
public function getSockets()
|
|
{
|
|
if ($this->conn) {
|
|
return array($this->conn->getSocket());
|
|
} else {
|
|
return array();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Process XMPP events that have come in over the wire.
|
|
* Side effects: may switch site configuration
|
|
* @fixme may kill process on XMPP error
|
|
* @param resource $socket
|
|
*/
|
|
public function handleInput($socket)
|
|
{
|
|
$this->switchSite();
|
|
|
|
# Process the queue for as long as needed
|
|
try {
|
|
if ($this->conn) {
|
|
assert($socket === $this->conn->getSocket());
|
|
|
|
common_log(LOG_DEBUG, "Servicing the XMPP queue.");
|
|
$this->stats('xmpp_process');
|
|
$this->conn->processTime(0);
|
|
}
|
|
} catch (XMPPHP_Exception $e) {
|
|
common_log(LOG_ERR, "Got an XMPPHP_Exception: " . $e->getMessage());
|
|
die($e->getMessage());
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Idle processing for io manager's execution loop.
|
|
* Send keepalive pings to server.
|
|
*
|
|
* Side effect: kills process on exception from XMPP library.
|
|
*
|
|
* @fixme non-dying error handling
|
|
*/
|
|
public function idle($timeout=0)
|
|
{
|
|
if ($this->conn) {
|
|
$now = time();
|
|
if (empty($this->lastping) || $now - $this->lastping > self::PING_INTERVAL) {
|
|
$this->switchSite();
|
|
try {
|
|
$this->sendPing();
|
|
$this->lastping = $now;
|
|
} catch (XMPPHP_Exception $e) {
|
|
common_log(LOG_ERR, "Got an XMPPHP_Exception: " . $e->getMessage());
|
|
die($e->getMessage());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Send a keepalive ping to the XMPP server.
|
|
*/
|
|
protected function sendPing()
|
|
{
|
|
$jid = jabber_daemon_address().'/'.$this->resource();
|
|
$server = common_config('xmpp', 'server');
|
|
|
|
if (!isset($this->pingid)) {
|
|
$this->pingid = 0;
|
|
} else {
|
|
$this->pingid++;
|
|
}
|
|
|
|
common_log(LOG_DEBUG, "Sending ping #{$this->pingid}");
|
|
|
|
$this->conn->send("<iq from='{$jid}' to='{$server}' id='ping_{$this->pingid}' type='get'><ping xmlns='urn:xmpp:ping'/></iq>");
|
|
}
|
|
|
|
/**
|
|
* Callback for Jabber reconnect event
|
|
* @param $pl
|
|
*/
|
|
function handle_reconnect(&$pl)
|
|
{
|
|
common_log(LOG_NOTICE, 'XMPP reconnected');
|
|
|
|
$this->conn->processUntil('session_start');
|
|
$this->conn->presence(null, 'available', null, 'available', -1);
|
|
}
|
|
|
|
/**
|
|
* Callback for Jabber message event.
|
|
*
|
|
* This connection handles output; if we get a message straight to us,
|
|
* forward it on to our XmppDaemon listener for processing.
|
|
*
|
|
* @param $pl
|
|
*/
|
|
function forward_message(&$pl)
|
|
{
|
|
if ($pl['type'] != 'chat') {
|
|
common_log(LOG_DEBUG, 'Ignoring message of type ' . $pl['type'] . ' from ' . $pl['from']);
|
|
return;
|
|
}
|
|
$listener = $this->listener();
|
|
if (strtolower($listener) == strtolower($pl['from'])) {
|
|
common_log(LOG_WARNING, 'Ignoring loop message.');
|
|
return;
|
|
}
|
|
common_log(LOG_INFO, 'Forwarding message from ' . $pl['from'] . ' to ' . $listener);
|
|
$this->conn->message($this->listener(), $pl['body'], 'chat', null, $this->ofrom($pl['from']));
|
|
}
|
|
|
|
/**
|
|
* Build an <addresses> block with an ofrom entry for forwarded messages
|
|
*
|
|
* @param string $from Jabber ID of original sender
|
|
* @return string XML fragment
|
|
*/
|
|
protected function ofrom($from)
|
|
{
|
|
$address = "<addresses xmlns='http://jabber.org/protocol/address'>\n";
|
|
$address .= "<address type='ofrom' jid='$from' />\n";
|
|
$address .= "</addresses>\n";
|
|
return $address;
|
|
}
|
|
|
|
/**
|
|
* Build the complete JID of the XmppDaemon process which
|
|
* handles primary XMPP input for this site.
|
|
*
|
|
* @return string Jabber ID
|
|
*/
|
|
protected function listener()
|
|
{
|
|
if (common_config('xmpp', 'listener')) {
|
|
return common_config('xmpp', 'listener');
|
|
} else {
|
|
return jabber_daemon_address() . '/' . common_config('xmpp','resource') . 'daemon';
|
|
}
|
|
}
|
|
|
|
protected function resource()
|
|
{
|
|
return 'queue' . posix_getpid(); // @fixme PIDs won't be host-unique
|
|
}
|
|
|
|
/**
|
|
* Make sure we're on the right site configuration
|
|
*/
|
|
protected function switchSite()
|
|
{
|
|
if ($this->site != common_config('site', 'server')) {
|
|
common_log(LOG_DEBUG, __METHOD__ . ": switching to site $this->site");
|
|
$this->stats('switch');
|
|
StatusNet::init($this->site);
|
|
}
|
|
}
|
|
}
|