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AlternC/bureau/class/m_quota.php

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<?php
/*
$Id: m_quota.php,v 1.17 2006/02/09 19:48:30 benjamin Exp $
----------------------------------------------------------------------
AlternC - Web Hosting System
Copyright (C) 2006 Le réseau Koumbit Inc.
http://koumbit.org/
Copyright (C) 2002 by the AlternC Development Team.
http://alternc.org/
----------------------------------------------------------------------
Based on:
Valentin Lacambre's web hosting softwares: http://altern.org/
----------------------------------------------------------------------
LICENSE
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License (GPL)
as published by the Free Software Foundation; either version 2
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 General Public License for more details.
To read the license please visit http://www.gnu.org/copyleft/gpl.html
----------------------------------------------------------------------
Original Author of file: Benjamin Sonntag
Purpose of file: Manage user quota
----------------------------------------------------------------------
*/
/*
# Structure de la table `defquotas`
CREATE TABLE `defquotas` (
`quota` varchar(128) NOT NULL default '',
`value` bigint(20) unsigned NOT NULL default '0'
`type` varchar(128) NOT NULL default ''
) TYPE=MyISAM COMMENT='Quotas par défaut (nouveaux comptes)';
# Structure de la table `quotas`
CREATE TABLE `quotas` (
`uid` int(10) unsigned NOT NULL default '0',
`name` varchar(64) NOT NULL default '',
`total` int(11) NOT NULL default '0',
PRIMARY KEY (`uid`,`name`)
) TYPE=MyISAM COMMENT='Quotas des Membres';
*/
/**
* Class for hosting quotas management
*
* This class manages services' quotas for each user of AlternC.
* The available quotas for each service is stored in the system.quotas
* mysql table. The used value is computed by the class using a
* callback function <code>alternc_quota_check($uid)</code> that
* may by exported by each service class.<br>
* each class may also export a function <code>alternc_quota_names()</code>
* that returns an array with the quotas names managed by this class.
*
* @copyright AlternC-Team 2001-2005 http://alternc.org/
*
*/
class m_quota {
var $disk=Array( /* Liste des ressources disque soumises a quota */
"web"=>"web");
var $quotas;
var $clquota; // Which class manage which quota.
/* ----------------------------------------------------------------- */
/**
* Constructor
*/
function m_quota() {
}
/* ----------------------------------------------------------------- */
/** Check if a user can use a ressource.
* @Return TRUE if the user can create a ressource (= is there any quota left ?)
*/
function cancreate($ressource="") {
$t=$this->getquota($ressource);
return $t["u"]<$t["t"];
}
/* ----------------------------------------------------------------- */
/**
* @Return an array with the list of quota-managed services in the server
*/
function qlist() {
global $classes;
$qlist=array();
reset($this->disk);
while (list($key,$val)=each($this->disk)) {
$qlist[$key]=_("quota_".$key); // those are specific disks quotas.
}
foreach($classes as $c) {
if (method_exists($GLOBALS[$c],"alternc_quota_names")) {
$res=$GLOBALS[$c]->alternc_quota_names(); // returns a string or an array.
if($res != "") {
if (is_array($res)) {
foreach($res as $k) {
$qlist[$k]=_("quota_".$k);
$this->clquota[$k]=$c;
}
} else {
$qlist[$res]=_("quota_".$res);
$this->clquota[$res]=$c;
}
}
}
}
return $qlist;
}
/* ----------------------------------------------------------------- */
/**
* @param string ressource to get quota of
* @Return the quota used and total for this ressource (or for all ressource if unspecified)
*/
function getquota($ressource="") {
global $db,$err,$cuid;
$err->log("quota","getquota",$ressource);
$this->qlist(); // Generate the quota list.
$db->query("select * from quotas where uid='$cuid';");
if ($db->num_rows()==0) {
return array("t"=>0, "u"=>0);
} else {
while ($db->next_record()) {
$ttmp[]=$db->Record;
}
foreach ($ttmp as $tt) {
$g=array("t"=>$tt["total"],"u"=>0);
if (method_exists($GLOBALS[$this->clquota[$tt["name"]]],"alternc_get_quota")) {
$g["u"]=$GLOBALS[$this->clquota[$tt["name"]]]->alternc_get_quota($tt["name"]);
}
$this->quotas[$tt["name"]]=$g;
}
}
reset($this->disk);
while (list($key,$val)=each($this->disk)) {
$a=array();
exec("/usr/lib/alternc/quota_get ".$cuid." ".$val,$a);
$this->quotas[$val]=array("t"=>$a[1],"u"=>$a[0]);
}
if ($ressource) {
return $this->quotas[$ressource];
} else {
return $this->quotas;
}
}
/* ----------------------------------------------------------------- */
/** Set the quota for a user (and for a ressource)
* @param string ressource to set quota of
* @param integer size of the quota (available or used)
*/
function setquota($ressource,$size) {
global $err,$db,$cuid;
$err->log("quota","setquota",$ressource."/".$size);
if (floatval($size)==0) $size="0";
if ($this->disk[$ressource]) {
// It's a disk resource, update it with shell command
exec("/usr/lib/alternc/quota_edit $cuid $size");
// Now we check that the value has been written properly :
exec("/usr/lib/alternc/quota_get ".$cuid,$a);
if ($size!=$a[1]) {
$err->raise("quota",1);
return false;
}
}
// We check that this ressource exists for this client :
$db->query("SELECT * FROM quotas WHERE uid='$cuid' AND name='$ressource'");
if ($db->num_rows()) {
$db->query("UPDATE quotas SET total='$size' WHERE uid='$cuid' AND name='$ressource';");
} else {
$db->query("INSERT INTO quotas (uid,name,total) VALUES ('$cuid','$ressource','$size');");
}
return true;
}
/* ----------------------------------------------------------------- */
/**
* Increment the resource usage for the named resource
* TODO : delete this function as it is useless... (and empty ;) )
*/
function inc($ressource) {
global $db,$err,$cuid;
$err->log("quota","inc",$ressource);
return true;
}
/* ----------------------------------------------------------------- */
/**
* Decrement the resource usage for the named resource
* TODO : delete this function as it is useless... (and empty ;) )
*/
function dec($ressource) {
global $db,$err,$cuid;
$err->log("quota","dec",$ressource);
return true;
}
/* ----------------------------------------------------------------- */
/**
* Check a user's quota: call a function for each class.
* TODO : delete this function as it is useless... (and empty ;) )
*/
function checkquota() {
global $err,$classes,$cuid;
$err->log("quota","checkquota",$id);
return true;
}
/* ----------------------------------------------------------------- */
/**
* Erase all quota information about the user.
*/
function delquotas() {
global $db,$err,$cuid;
$err->log("quota","delquota");
$db->query("DELETE FROM quotas WHERE uid='$cuid';");
return true;
}
/* ----------------------------------------------------------------- */
/**
* Get the default quotas as an associative array
* @return array the array of the default quotas
*/
function getdefaults() {
global $db;
$c=array();
$db->query("SELECT type,quota FROM defquotas WHERE type='default'");
if(!$db->next_record())
$this->addtype('default');
$db->query("SELECT value,quota,type FROM defquotas ORDER BY type,quota");
while($db->next_record()) {
$type = $db->f("type");
$c[$type][$db->f("quota")] = $db->f("value");
}
return $c;
}
/* ----------------------------------------------------------------- */
/**
* Set the default quotas
* @param array associative array of quota (key=>val)
*/
function setdefaults($newq) {
global $db;
$qlist=$this->qlist();
foreach($newq as $type => $quotas) {
foreach($quotas as $qname => $value) {
if(array_key_exists($qname, $qlist)) {
if(!$db->query("REPLACE INTO defquotas (value,quota,type) VALUES ($value,'$qname','$type');"))
return false;
}
}
}
return true;
}
/* ----------------------------------------------------------------- */
/**
* Add an account type for quotas
* @param string account type to be added
*/
function addtype($type) {
global $db;
$qlist=$this->qlist();
reset($qlist);
if(empty($type))
return false;
while (list($key,$val)=each($qlist)) {
if(!$db->query("INSERT IGNORE INTO defquotas (quota,type) VALUES('$key', '$type');")
|| $db->affected_rows() == 0)
return false;
}
return true;
}
/* ----------------------------------------------------------------- */
/**
* Delete an account type for quotas
* @param string account type to be deleted
*/
function deltype($type) {
global $db;
$qlist=$this->qlist();
reset($qlist);
if($db->query("UPDATE membres SET type='default' WHERE type='$type'") &&
$db->query("DELETE FROM defquotas WHERE type='$type'")) {
return true;
} else {
return false;
}
}
/* ----------------------------------------------------------------- */
/**
* Create default quotas entries for a new user.
*/
function addquotas() {
global $db,$err,$cuid;
$err->log("quota","addquota");
$ql=$this->qlist();
reset($ql);
$db->query("SELECT type,quota FROM defquotas WHERE type='default'");
if(!$db->next_record())
$this->addtype('default');
$db->query("SELECT type FROM membres WHERE uid='$cuid'");
$db->next_record();
$t = $db->f("type");
foreach($ql as $res => $val) {
$db->query("SELECT value FROM defquotas WHERE quota='$res' AND type='$t'");
$q = $db->next_record() ? $db->f("value") : 0;
$this->setquota($res, $q);
}
return true;
}
/* ----------------------------------------------------------------- */
/** Return a quota value with its unit (when it is a space quota)
* in MB, GB, TB ...
* @param string $type The quota type
* @param integer $value The quota value
* @return string a quota value with its unit.
*/
function display_val($type, $value) {
switch ($type) {
case 'bw_web':
return format_size($value);
case 'web':
return format_size($value*1024);
default:
return $value;
}
}
/* ----------------------------------------------------------------- */
/** Hook function called when a user is created
* This function initialize the user's quotas.
*/
function alternc_del_member() {
$this->delquotas();
}
/* ----------------------------------------------------------------- */
/** Hook function call when a user is deleted
* AlternC's standard function called when a user is deleted
*/
function alternc_add_member() {
$this->addquotas();
}
/* ----------------------------------------------------------------- */
/**
* Exports all the quota related information for an account.
* @access private
* EXPERIMENTAL 'sid' function ;)
*/
function alternc_export($tmpdir) {
global $db,$err;
$err->log("quota","export");
$str="<quota>\n";
$q=$this->getquota();
foreach ($q as $k=>$v) {
$str.=" <service>\n <name>".xml_entities($k)."</name>\n";
$str.=" <total>".xml_entities($v)."</total>\n </service>\n";
}
$str.="</quota>\n";
return $str;
}
} /* Class m_quota */
?>
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