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<?php
/**
* XMPPHP: The PHP XMPP Library
* Copyright (C) 2008 Nathanael C. Fritz
* This file is part of SleekXMPP.
*
* XMPPHP is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* XMPPHP 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with XMPPHP; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* @category xmpphp
* @package XMPPHP
* @author Nathanael C. Fritz <JID: fritzy@netflint.net>
* @author Stephan Wentz <JID: stephan@jabber.wentz.it>
* @author Michael Garvin <JID: gar@netflint.net>
* @copyright 2008 Nathanael C. Fritz
*/
/**
* XMPPHP Roster Object
*
* @category xmpphp
* @package XMPPHP
* @author Nathanael C. Fritz <JID: fritzy@netflint.net>
* @author Stephan Wentz <JID: stephan@jabber.wentz.it>
* @author Michael Garvin <JID: gar@netflint.net>
* @copyright 2008 Nathanael C. Fritz
* @version $Id$
*/
class Roster {
/**
* Roster array, handles contacts and presence. Indexed by jid.
* Contains array with potentially two indexes 'contact' and 'presence'
* @var array
*/
protected $roster_array = array();
/**
* Constructor
*
*/
public function __construct($roster_array = array()) {
if ($this->verifyRoster($roster_array)) {
$this->roster_array = $roster_array; //Allow for prepopulation with existing roster
} else {
$this->roster_array = array();
}
}
/**
*
* Check that a given roster array is of a valid structure (empty is still valid)
*
* @param array $roster_array
*/
protected function verifyRoster($roster_array) {
#TODO once we know *what* a valid roster array looks like
return True;
}
/**
*
* Add given contact to roster
*
* @param string $jid
* @param string $subscription
* @param string $name
* @param array $groups
*/
public function addContact($jid, $subscription, $name='', $groups=array()) {
$contact = array('jid' => $jid, 'subscription' => $subscription, 'name' => $name, 'groups' => $groups);
if ($this->isContact($jid)) {
$this->roster_array[$jid]['contact'] = $contact;
} else {
$this->roster_array[$jid] = array('contact' => $contact);
}
}
/**
*
* Retrieve contact via jid
*
* @param string $jid
*/
public function getContact($jid) {
if ($this->isContact($jid)) {
return $this->roster_array[$jid]['contact'];
}
}
/**
*
* Discover if a contact exists in the roster via jid
*
* @param string $jid
*/
public function isContact($jid) {
return (array_key_exists($jid, $this->roster_array));
}
/**
*
* Set presence
*
* @param string $presence
* @param integer $priority
* @param string $show
* @param string $status
*/
public function setPresence($presence, $priority, $show, $status) {
list($jid, $resource) = explode("/", $presence);
if ($show != 'unavailable') {
if (!$this->isContact($jid)) {
$this->addContact($jid, 'not-in-roster');
}
$resource = $resource ? $resource : '';
$this->roster_array[$jid]['presence'][$resource] = array('priority' => $priority, 'show' => $show, 'status' => $status);
} else { //Nuke unavailable resources to save memory
unset($this->roster_array[$jid]['resource'][$resource]);
}
}
/*
*
* Return best presence for jid
*
* @param string $jid
*/
public function getPresence($jid) {
$split = explode("/", $jid);
$jid = $split[0];
if($this->isContact($jid)) {
$current = array('resource' => '', 'active' => '', 'priority' => -129, 'show' => '', 'status' => ''); //Priorities can only be -128 = 127
foreach($this->roster_array[$jid]['presence'] as $resource => $presence) {
//Highest available priority or just highest priority
if ($presence['priority'] > $current['priority'] and (($presence['show'] == "chat" or $presence['show'] == "available") or ($current['show'] != "chat" or $current['show'] != "available"))) {
$current = $presence;
$current['resource'] = $resource;
}
}
return $current;
}
}
/**
*
* Get roster
*
*/
public function getRoster() {
return $this->roster_array;
}
}
?>