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-rw-r--r--include/functions_group.inc.php104
1 files changed, 104 insertions, 0 deletions
diff --git a/include/functions_group.inc.php b/include/functions_group.inc.php
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+++ b/include/functions_group.inc.php
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+<?php
+/***************************************************************************
+ * functions_group.inc.php *
+ * -------------------- *
+ * application : PhpWebGallery 1.3 *
+ * author : Pierrick LE GALL <pierrick@z0rglub.com> *
+ * *
+ ***************************************************************************
+
+ ***************************************************************************
+ * *
+ * 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;
+}
+?> \ No newline at end of file