275 lines
8.0 KiB
PHP
275 lines
8.0 KiB
PHP
<?php
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/*
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* StatusNet - the distributed open-source microblogging tool
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* Copyright (C) 2008, 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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if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
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/**
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* MSN background connection manager for MSN-using queue handlers,
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* allowing them to send outgoing messages on the right connection.
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*
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* Input is handled during socket select loop, keepalive pings during idle.
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* Any incoming messages will be handled.
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*
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* In a multi-site queuedaemon.php run, one connection will be instantiated
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* for each site being handled by the current process that has MSN enabled.
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*/
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class MsnManager extends ImManager {
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public $conn = null;
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protected $lastPing = null;
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protected $pingInterval;
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/**
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* Initialise connection to server.
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*
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* @return boolean true on success
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*/
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public function start($master) {
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if (parent::start($master)) {
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$this->requeue_waiting_messages();
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$this->connect();
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return true;
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} else {
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return false;
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}
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}
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/**
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* Return any open sockets that the run loop should listen
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* for input on.
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*
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* @return array Array of socket resources
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*/
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public function getSockets() {
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$this->connect();
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if ($this->conn) {
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return $this->conn->getSockets();
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} else {
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return array();
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}
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}
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/**
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* Idle processing for io manager's execution loop.
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* Send keepalive pings to server.
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*
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* @return void
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*/
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public function idle($timeout = 0) {
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if (empty($this->lastPing) || time() - $this->lastPing > $this->pingInterval) {
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$this->send_ping();
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}
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}
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/**
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* Message pump is triggered on socket input, so we only need an idle()
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* call often enough to trigger our outgoing pings.
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*/
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public function timeout() {
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return $this->pingInterval;
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}
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/**
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* Process MSN events that have come in over the wire.
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*
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* @param resource $socket Socket ready
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* @return void
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*/
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public function handleInput($socket) {
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common_log(LOG_DEBUG, 'Servicing the MSN queue.');
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$this->stats('msn_process');
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$this->conn->receive();
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}
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/**
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* Initiate connection
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*
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* @return void
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*/
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public function connect() {
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if (!$this->conn) {
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$this->conn = new MSN(
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array(
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'user' => $this->plugin->user,
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'password' => $this->plugin->password,
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'alias' => $this->plugin->nickname,
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'psm' => 'Send me a message to post a notice',
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'debug' => false
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)
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);
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$this->conn->registerHandler('IMin', array($this, 'handle_msn_message'));
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$this->conn->registerHandler('SessionReady', array($this, 'handle_session_ready'));
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$this->conn->registerHandler('Pong', array($this, 'update_ping_time'));
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$this->conn->registerHandler('ConnectFailed', array($this, 'handle_connect_failed'));
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$this->conn->registerHandler('Reconnect', array($this, 'handle_reconnect'));
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$this->conn->signon();
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$this->lastPing = time();
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}
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return $this->conn;
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}
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/**
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* Called by the idle process to send a ping
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* when necessary
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*
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* @return void
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*/
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protected function send_ping() {
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$this->connect();
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if (!$this->conn) {
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return false;
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}
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$this->conn->sendPing();
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$this->lastPing = time();
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$this->pingInterval = 50;
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return true;
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}
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/**
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* Update the time till the next ping
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*
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* @param $data Time till next ping
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* @return void
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*/
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public function update_ping_time($data) {
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$this->pingInterval = $data;
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}
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/**
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* Called via a callback when a message is received
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*
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* Passes it back to the queuing system
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*
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* @param array $data Data
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* @return boolean
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*/
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public function handle_msn_message($data) {
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$this->plugin->enqueue_incoming_raw($data);
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return true;
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}
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/**
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* Called via a callback when a session becomes ready
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*
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* @param array $data Data
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*/
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public function handle_session_ready($data) {
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$sessionFailed = false;
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$wm = Msn_waiting_message::top($data['to']);
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while ($wm != NULL) {
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if ($sessionFailed) {
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$this->plugin->send_message($wm->screenname, $wm->message);
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$sessionFailed = true;
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} elseif (!$this->conn->sendMessage($wm->screenname, $wm->message, $ignore)) {
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$this->plugin->send_message($wm->screenname, $wm->message);
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}
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$wm->delete();
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$wm = Msn_waiting_message::top($data['to']);
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}
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}
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/**
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* Requeue messages from the waiting table so we try
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* to send them again
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*
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* @return void
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*/
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protected function requeue_waiting_messages() {
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$wm = Msn_waiting_message::top();
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while ($wm != NULL) {
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$this->plugin->send_message($wm->screenname, $wm->message);
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$wm->delete();
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$wm = Msn_waiting_message::top();
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}
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}
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/**
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* Called by callback to log failure during connect
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*
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* @return void
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*/
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public function handle_connect_failed() {
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common_log(LOG_NOTICE, 'MSN connect failed, retrying');
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}
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/**
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* Called by callback to log reconnection
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*
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* @param void $data Not used (there to keep callback happy)
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* @return void
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*/
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public function handle_reconnect($data) {
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common_log(LOG_NOTICE, 'MSN reconnecting');
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// Requeue messages waiting in the DB
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$this->requeue_waiting_messages();
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}
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/**
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* Enters a message into the database for sending via a callback
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* when the session is established
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*
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* @param string $to Intended recipient
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* @param string $message Message
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*/
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protected function enqueue_waiting_message($to, $message) {
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$wm = new Msn_waiting_message();
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$wm->screenname = $to;
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$wm->message = $message;
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$wm->created = common_sql_now();
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$result = $wm->insert();
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if (!$result) {
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common_log_db_error($wm, 'INSERT', __FILE__);
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throw new ServerException('DB error inserting queue item');
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}
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return true;
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}
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/**
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* Send a message using the daemon
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*
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* @param $data Message data
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* @return boolean true on success
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*/
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public function send_raw_message($data) {
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$this->connect();
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if (!$this->conn) {
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return false;
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}
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$waitForSession = false;
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if (!$this->conn->sendMessage($data['to'], $data['message'], $waitForSession)) {
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if ($waitForSession) {
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$this->enqueue_waiting_message($data['to'], $data['message']);
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} else {
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return false;
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}
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}
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// Sending a command updates the time till next ping
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$this->lastPing = time();
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$this->pingInterval = 50;
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return true;
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}
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}
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