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#!/usr/bin/env php
<?php
/*
* Laconica - a distributed open-source microblogging tool
* Copyright (C) 2008, Controlez-Vous, 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/>.
*/
# Abort if called from a web server
if (isset($_SERVER) && array_key_exists('REQUEST_METHOD', $_SERVER)) {
print "This script must be run from the command line\n";
exit();
}
define('INSTALLDIR', dirname(__FILE__));
define('LACONICA', true);
require_once(INSTALLDIR . '/lib/common.php');
require_once(INSTALLDIR . '/lib/jabber.php');
# This is kind of clunky; we create a class to call the global functions
# in jabber.php, which create a new XMPP class. A more elegant (?) solution
# might be to use make this a subclass of XMPP.
class XMPPDaemon {
function XMPPDaemon($resource=NULL) {
static $attrs = array('server', 'port', 'user', 'password', 'host');
foreach ($attrs as $attr)
{
$this->$attr = common_config('xmpp', $attr);
}
if ($resource) {
$this->resource = $resource;
} else {
$this->resource = common_config('xmpp', 'resource') . 'daemon';
}
$this->log(LOG_INFO, "{$this->user}@{$this->server}/{$this->resource}");
}
function connect() {
$connect_to = ($this->host) ? $this->host : $this->server;
$this->log(LOG_INFO, "Connecting to $connect_to on port $this->port");
$this->conn = jabber_connect($this->resource);
if (!$this->conn) {
return false;
}
return !$this->conn->disconnected;
}
function handle() {
while(!$this->conn->disconnected) {
$payloads = $this->conn->processUntil(array('message', 'presence',
'end_stream', 'session_start'));
foreach($payloads as $event) {
$pl = $event[1];
$this->log(LOG_DEBUG, "Received '$event[0]': " . print_r($pl, TRUE));
switch($event[0]) {
case 'message':
$this->handle_message($pl);
break;
case 'presence':
$this->handle_presence($pl);
break;
case 'session_start':
$this->handle_session($pl);
break;
}
}
}
}
function handle_message(&$pl) {
if ($pl['type'] != 'chat') {
return;
}
if (strlen($pl['body']) == 0) {
return;
}
$from = jabber_normalize_jid($pl['from']);
$user = User::staticGet('jabber', $from);
if (!$user) {
$this->log(LOG_WARNING, 'Message from unknown user ' . $from);
return;
}
if ($this->handle_command($user, $pl['body'])) {
return;
} else {
$this->add_notice($user, $pl);
}
}
function handle_command($user, $body) {
# XXX: localise
switch(trim($body)) {
case 'on':
$this->set_notify($user, true);
return true;
case 'off':
$this->set_notify($user, false);
return true;
default:
return false;
}
}
function set_notify(&$user, $notify) {
$orig = clone($user);
$user->jabbernotify = $notify;
$result = $user->update($orig);
if (!$id) {
$last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
$this->log(LOG_ERROR,
'Could not set notify flag to ' . $notify .
' for user ' . common_log_objstring($user) .
': ' . $last_error->message);
} else {
$this->log(LOG_INFO,
'User ' . $user->nickname . ' set notify flag to ' . $notify);
}
}
function add_notice(&$user, &$pl) {
$notice = new Notice();
$notice->profile_id = $user->id;
$notice->content = trim(substr($pl['body'], 0, 140));
$notice->created = DB_DataObject_Cast::dateTime();
$notice->query('BEGIN');
$id = $notice->insert();
if (!$id) {
$last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
$this->log(LOG_ERROR,
'Could not insert ' . common_log_objstring($notice) .
' for user ' . common_log_objstring($user) .
': ' . $last_error->message);
return;
}
$orig = clone($notice);
$notice->uri = common_notice_uri($notice);
$result = $notice->update($orig);
if (!$result) {
$last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
$this->log(LOG_ERROR,
'Could not add URI to ' . common_log_objstring($notice) .
' for user ' . common_log_objstring($user) .
': ' . $last_error->message);
return;
}
$notice->query('COMMIT');
common_broadcast_notice($notice);
$this->log(LOG_INFO,
'Added notice ' . $notice->id . ' from user ' . $user->nickname);
}
function handle_presence(&$pl) {
$from = jabber_normalize_jid($pl['from']);
switch ($pl['type']) {
case 'subscribe':
# We let anyone subscribe
$this->subscribed($from);
$this->log(LOG_INFO,
'Accepted subscription from ' . $from);
break;
case 'subscribed':
case 'unsubscribe':
case 'unsubscribed':
$this->log(LOG_INFO,
'Ignoring "' . $pl['type'] . '" from ' . $from);
break;
default:
if (!$pl['type']) {
$user = User::staticGet('jabber', $from);
if (!$user) {
$this->log(LOG_WARNING, 'Message from unknown user ' . $from);
return;
}
if ($user->updatefrompresence) {
$this->log(LOG_INFO, 'Updating ' . $user->nickname .
' status from presence.');
$this->add_notice($user, $pl);
}
}
break;
}
}
function log($level, $msg) {
common_log($level, 'XMPPDaemon('.$this->resource.'): '.$msg);
}
function subscribed($to) {
jabber_special_presence('subscribed', $to);
}
function set_status($status) {
$this->log(LOG_INFO, 'Setting status to "' . $status . '"');
jabber_send_presence($status);
}
}
$resource = ($argc > 1) ? $argv[1] : NULL;
$daemon = new XMPPDaemon($resource);
if ($daemon->connect()) {
$daemon->set_status("Send me a message to post a notice");
$daemon->handle();
}
?>
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