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<?php
/***************************************************************************
* functions_group.inc.php *
* -------------------- *
* application : PhpWebGallery 1.3 <http://phpwebgallery.net> *
* author : Pierrick LE GALL <pierrick@z0rglub.com> *
* *
* $Id$
* *
***************************************************************************
***************************************************************************
* *
* This program 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; *
* *
***************************************************************************/
// get_group_restrictions returns an array containing all unaccessible
// category ids.
function get_group_restrictions( $group_id )
{
// 1. retrieving ids of private categories
$query = 'SELECT id';
$query.= ' FROM '.PREFIX_TABLE.'categories';
$query.= " WHERE status = 'private'";
$query.= ';';
$result = mysql_query( $query );
$privates = array();
while ( $row = mysql_fetch_array( $result ) )
{
array_push( $privates, $row['id'] );
}
// 2. retrieving all authorized categories for the group
$authorized = array();
$query = 'SELECT cat_id';
$query.= ' FROM '.PREFIX_TABLE.'group_access';
$query.= ' WHERE group_id = '.$group_id;
$query.= ';';
$result = mysql_query( $query );
while ( $row = mysql_fetch_array( $result ) )
{
array_push( $authorized, $row['cat_id'] );
}
$forbidden = array();
foreach ( $privates as $private ) {
if ( !in_array( $private, $authorized ) )
{
array_push( $forbidden, $private );
}
}
return $forbidden;
}
// get_all_group_restrictions returns an array with ALL unaccessible
// category ids, including sub-categories
function get_all_group_restrictions( $group_id )
{
$restricted_cats = get_group_restrictions( $group_id );
foreach ( $restricted_cats as $restricted_cat ) {
$sub_restricted_cats = get_subcats_id( $restricted_cat );
foreach ( $sub_restricted_cats as $sub_restricted_cat ) {
array_push( $restricted_cats, $sub_restricted_cat );
}
}
return $restricted_cats;
}
// The function is_group_allowed returns :
// - 0 : if the category is allowed with this $restrictions array
// - 1 : if this category is not allowed
// - 2 : if an uppercat category is not allowed
function is_group_allowed( $category_id, $restrictions )
{
$lowest_category_id = $category_id;
$is_root = false;
while ( !$is_root and !in_array( $category_id, $restrictions ) )
{
$query = 'SELECT id_uppercat';
$query.= ' FROM '.PREFIX_TABLE.'categories';
$query.= ' WHERE id = '.$category_id;
$query.= ';';
$row = mysql_fetch_array( mysql_query( $query ) );
if ( $row['id_uppercat'] == '' )
{
$is_root = true;
}
$category_id = $row['id_uppercat'];
}
if ( in_array( $lowest_category_id, $restrictions ) )
{
return 1;
}
if ( in_array( $category_id, $restrictions ) )
{
return 2;
}
// this group is allowed to go in this category
return 0;
}
?>
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