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AlternC/bureau/class/m_variables.php

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<?php
/*
* $Id: variables.php,v 1.8 2005/04/02 00:26:36 anarcat Exp $
----------------------------------------------------------------------
AlternC - Web Hosting System
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
----------------------------------------------------------------------
*/
/**
* Persistent variable table
*
* @author Drupal Developpement Team
* @link http://cvs.drupal.org/viewcvs/drupal/drupal/includes/bootstrap.inc?rev=1.38&view=auto
*/
class m_variables {
var $strata_order = array('DEFAULT','GLOBAL','FQDN_CREATOR','FQDN','CREATOR','MEMBER','DOMAIN');
// used by get_impersonated to merge array. Son value overwrite father's value
private function variable_merge($father, $son) {
if (! is_array($son)) return $father;
foreach ($son as $k=>$v) {
$father[$k] = $v;
}
return $father;
}
/**
* Load the persistent variable table.
*
* The variable table is composed of values that have been saved in the table
* with variable_set() as well as those explicitly specified in the configuration
* file.
*/
function variable_init() {
global $cuid;
if ($cuid > 1999) {
$mid = $cuid;
} else {
$mid = null;
}
return $this->get_impersonated($_SERVER['HTTP_HOST'], $mid);
}
function get_impersonated($fqdn=null, $uid=null, $var=null) {
global $db, $err;
$arr_var=$this->variables_list();
// Get some vars we are going to need.
if ($fqdn != NULL) {
$sub_infos=m_dom::get_sub_domain_id_and_member_by_name( strtolower($fqdn) );
} else {
$sub_infos=false;
}
if ( $uid != NULL ) {
$creator=m_mem::get_creator_by_uid($uid);
} else {
$creator=false;
}
$variables = array();
// Browse the array in the specific order of the strata
foreach ( $this->strata_order as $strata) {
if (! isset($arr_var[$strata]) || !is_array($arr_var[$strata])) continue;
switch($strata) {
case 'DEFAULT':
$variables = $this->variable_merge(array(),$arr_var['DEFAULT'][NULL]);
break;
case 'GLOBAL':
$variables = $this->variable_merge($variables, $arr_var['GLOBAL'][NULL]);
break;
case 'FQDN_CREATOR':
if ( is_array($sub_infos) && isset($arr_var['FQDN_CREATOR'][$sub_infos['member_id']]) && is_array($arr_var['FQDN_CREATOR'][$sub_infos['member_id']])) {
$variables = $this->variable_merge($variables, $arr_var['FQDN_CREATOR'][$sub_infos['member_id']]);
}
break;
case 'FQDN':
if ( is_array($sub_infos) && isset($arr_var['FQDN'][$sub_infos['sub_id']]) && is_array($arr_var['FQDN'][$sub_infos['sub_id']])) {
$variables = $this->variable_merge($variables, $arr_var['FQDN'][$sub_infos['sub_id']]);
}
break;
case 'CREATOR':
if ( $creator && isset($arr_var['CREATOR'][$creator]) && is_array($arr_var['CREATOR'][$creator])) {
$variables = $this->variable_merge($variables, $arr_var['CREATOR'][$creator] );
}
break;
case 'MEMBER':
if ( $uid && isset($arr_var['MEMBER'][$uid]) && is_array($arr_var['MEMBER'][$uid])) {
$variables = $this->variable_merge($variables, $arr_var['MEMBER'][$uid] );
}
break;
case 'DOMAIN':
//FIXME TODO
break;
} //switch
} //foreach
#printvar($variables);die();
if ($var && isset($variables[$var])) {
return $variables[$var];
} else {
return $variables;
}
}
/**
* Initialize the global $conf array if necessary
*
* @global $conf the global conf array
* @uses variable_init()
*/
function variable_init_maybe($force=false) {
global $conf;
if ($force || !isset($conf)) {
$conf = $this->variable_init();
}
}
/**
* Return a persistent variable.
*
* @param $name
* The name of the variable to return.
* @param $default
* The default value to use if this variable has never been set.
* @param $createit_comment
* If variable doesn't exist, create it with the default value
* and createit_comment value as comment
* @return
* The value of the variable.
* @global $conf
* A cache of the configuration.
*/
function variable_get($name, $default = null, $createit_comment = null) {
global $conf;
$this->variable_init_maybe();
if (isset($conf[$name])) {
return $conf[$name]['value'];
} elseif (!is_null($createit_comment)) {
$this->variable_update_or_create($name, $default, 'DEFAULT', 'null', 'null', $createit_comment);
}
return $default;
}
/**
* Set a persistent variable.
*
* @param $name
* The name of the variable to set.
* @param $value
* The value to set. This can be any PHP data type; these functions take care
* of serialization as necessary.
*/
function variable_set($name, $value, $comment=null) {
global $conf, $db, $err;
$err->log('variable', 'variable_set', '+'.serialize($value).'+'.$comment.'+');
$conf[$name] = $value;
if (is_object($value) || is_array($value)) {
$value = serialize($value);
}
if ( empty($comment) ) {
$query = "INSERT INTO variable (name, value) values ('".$name."', '".$value."') on duplicate key update name='$name', value='$value';";
} else {
$comment=mysql_real_escape_string($comment);
$query = "INSERT INTO variable (name, value, comment) values ('".$name."', '".$value."', '$comment') on duplicate key update name='$name', value='$value', comment='$comment';";
}
# $db->query("$query");
printvar($query);
$this->variable_init();
}
function variable_update_or_create($var_name, $var_value, $strata=null, $strata_id=null, $var_id=null, $comment=null) {
global $db, $err;
$err->log('variable', 'variable_update_or_create');
if ($var_id) {
$sql="UPDATE variable SET value='".mysql_real_escape_string($var_value)."' WHERE id = ".intval($var_id);
} else {
if ( empty($strata) ) {
$err->raise('variables', _("Err: Missing strata when creating var"));
return false;
}
$sql="INSERT INTO
variable (name, value, strata, strata_id, comment)
VALUES (
'".mysql_real_escape_string($var_name)."',
'".mysql_real_escape_string($var_value)."',
'".mysql_real_escape_string($strata)."',
".( is_null($strata_id)?'null':"'".mysql_real_escape_string($strata_id)."'").",
'".mysql_real_escape_string($comment)."' );";
}
$db->query("$sql");
$this->variable_init_maybe(true);
return true;
}
/**
* Unset a persistent variable.
*
* @param $name
* The name of the variable to undefine.
*/
function del($id) {
global $db;
$db->query("DELETE FROM `variable` WHERE id = '".intval($id)."'");
$this->variable_init_maybe(true);
}
function variables_list_name() {
global $db;
$result = $db->query('SELECT name, comment FROM `variable` order by name');
$t=array();
while ($db->next_record($result)) {
$tname = $db->f('name');
// If not listed of if listed comment is shorter
if ( ! isset( $t[$tname] ) || strlen($t[$tname]) < $db->f('comment') ) {
$t[$db->f('name')] = $db->f('comment');
}
}
return $t;
}
function variables_list() {
global $db;
$result = $db->query('SELECT * FROM `variable`');
$arr_var=array();
while ($db->next_record($result)) {
// Unserialize value if needed
if ( ($value = @unserialize($db->f('value'))) === FALSE) {
$value=$db->f('value');
}
$arr_var[$db->f('strata')][$db->f('strata_id')][$db->f('name')] = array('id'=>$db->f('id') ,'name'=>$db->f('name'), 'value'=>$value, 'comment'=>$db->f('comment'));
}
return $arr_var;
}
} /* Class m_variables */
?>
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