freenetis-github/application/models/groups_aro_map.php @ c2e44ab0
| c2e44ab0 | Michal Kliment | <?php defined('SYSPATH') or die('No direct script access.');
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/*
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* This file is part of open source system FreenetIS
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* and it is released under GPLv3 licence.
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*
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* More info about licence can be found:
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* http://www.gnu.org/licenses/gpl-3.0.html
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*
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* More info about project can be found:
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* http://www.freenetis.org/
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*
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*/
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/**
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* Pivot table between ARO map and user.
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* Interaction between user and access system.
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*
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* @author Ondřej Fibich
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* @package Model
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*
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* @property integer $group_id
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* @property integer $aro_id
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*/
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class Groups_aro_map_Model extends ORM
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{
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/**
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* Table name is groups_aro_map not groups_aro_maps
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*
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* @var bool
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*/
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protected $table_names_plural = FALSE;
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/**
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* Check access of user to part of system.
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*
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* Be wery carefull with editing of this method, whole system can be
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* damaged by impropriate edit!
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*
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* I have tried to different method of fetching data,
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* and for each I have made benchmarks using unit tester
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* throught all controllers.
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*
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* 1) DB query for each access rights
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* AVG Results: 0,3187821622s 6,4278378378MB
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*
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* 2) DB query for all user's rights cached after first of his access request
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* AVG Results: 0,3484608815s 6,4987052342MB
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*
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* The first method seems to be better, so here it is :-)
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*
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* @author Ondřej Fibich
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* @staticvar array $cache Cache of access
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* @staticvar array $cache_aro_user Cache of ACL parent tree
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* @staticvar array $cache_aro_hierarchy Cache of ACL parent tree
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* @param integer $user_id User to check access
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* @param string $aco_value ACO value - action (view_all, new_own, ...)
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* @param string $axo_section_value AXO section value - Controller name
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* @param string $axo_value AXO value - part of Controller
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* @return boolean Has this user access to this part of system?
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*/
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public function has_access(
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$user_id, $aco_value, $axo_section_value, $axo_value)
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{
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// Cache
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static $cache = array();
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static $cache_aro_hierarchy = NULL;
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static $cache_aro_user = array();
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// This codes calculates all predecesors of ARO group for hieararchy of
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// access rights.
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if ($cache_aro_hierarchy === NULL)
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{
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////////////////////////////////////////////////////////////////////////////////
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// // Debug for testing (benchmark)
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// $start_time = microtime();
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////////////////////////////////////////////////////////////////////////////////
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// Gets all groups id with relation to parent
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$aro_groups = ORM::factory('aro_group')->select_list('id', 'parent_id', 'id');
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// Go throught groupd
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foreach ($aro_groups as $i => $v)
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{
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// Final set of all parents (recursive) of group
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$final_set = array($i);
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// Stack for recursive walk throught groups
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$stack = ($v == 0) ? array() : array($v);
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// Go recursive throught parents
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while (($top = array_pop($stack)) !== NULL)
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{
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// End of tree?
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if ($aro_groups[$top] != 0)
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{
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// Add parents to stack
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array_push($stack, $aro_groups[$top]);
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// Add current to final set
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$final_set[] = $top;
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}
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}
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// Add to cache
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$cache_aro_hierarchy[$i] = array_unique($final_set);
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}
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////////////////////////////////////////////////////////////////////////////////
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// // Debug for testing
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//
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// $diff = microtime() - $start_time;
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// echo 'It tooks: ' . $diff . 'ms <br>';
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//
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// foreach ($cache_acl as $i => $v)
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// {
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// echo '<b>' . ORM::factory('aro_group', $i)->name . '</b>: ';
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// sort($v);
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//
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// foreach ($v as $id)
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// {
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// echo ORM::factory('aro_group', $id)->name . ', ';
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// }
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//
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// echo "<br><br>";
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// }
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//
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// die();
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////////////////////////////////////////////////////////////////////////////////
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}
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// Cache key
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$key = "$user_id#$aco_value#$axo_section_value#$axo_value";
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// Is in cache?
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if (!array_key_exists($key, $cache))
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{
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// Fill in user cache?
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if (!array_key_exists($user_id, $cache_aro_user))
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{
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// Get all ARO groups of user
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$user_in_groups = $this->where('aro_id', $user_id)
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->select_list('group_id', 'aro_id');
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// Set cache
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$cache_aro_user[$user_id] = array();
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// Add all parents for users group and set it to cache
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foreach ($user_in_groups as $group_id => $aro_id)
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{
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$cache_aro_user[$user_id] = array_merge(
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$cache_aro_user[$user_id],
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$cache_aro_hierarchy[$group_id]
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);
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}
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// Discart not unique values
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$cache_aro_user[$user_id] = array_unique($cache_aro_user[$user_id]);
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}
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// Is user in any group?
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if (count($cache_aro_user[$user_id]))
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{
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// Check and add to cache
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$cache[$key] = $this->db->query("
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SELECT COUNT(*) AS count
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FROM aro_groups
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LEFT JOIN aro_groups_map ON aro_groups_map.group_id = aro_groups.id
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LEFT JOIN acl ON acl.id = aro_groups_map.acl_id
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LEFT JOIN aco_map ON aco_map.acl_id = acl.id
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LEFT JOIN aco ON aco.value = aco_map.value
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LEFT JOIN axo_map ON axo_map.acl_id = acl.id
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WHERE aro_groups.id IN(" . implode(',', $cache_aro_user[$user_id]) . ") AND
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aco.value = ? AND
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axo_map.section_value = ? AND
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axo_map.value = ?
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", array
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(
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$aco_value, $axo_section_value, $axo_value
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))->current()->count > 0;
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}
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// No group, no access :-)
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else
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{
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$cache[$key] = FALSE;
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}
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}
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// Return access info
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return $cache[$key];
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}
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/**
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* Checks if aro map row exists
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*
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* @author Ondřej Fibich
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* @param integer $group_id ARO group ID
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* @param integer $aro_id User ID
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* @return boolean true if exists false otherwise
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*/
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public function groups_aro_map_exists($group_id, $aro_id)
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{
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return $this->db->query("
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SELECT COUNT(*) AS count
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FROM groups_aro_map
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WHERE group_id = ? AND aro_id = ?
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", array
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(
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$group_id, $aro_id
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))->current()->count > 0;
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}
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/**
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* Deletes user wights from diven group
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*
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* @param integer $group_id Group ID
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* @param integer $aro_id User ID
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*/
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public function detete_row($group_id, $aro_id)
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{
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$this->db->query("
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DELETE FROM groups_aro_map
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WHERE group_id=? AND aro_id=?
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", $group_id, $aro_id);
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}
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/**
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* Check if users is in given group
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*
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* @param integer $group_id Group ID
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* @param integer $aro_id User ID
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*/
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public function exist_row($group_id, $aro_id)
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{
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$result = $this->db->query("
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SELECT group_id
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FROM groups_aro_map
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WHERE group_id=? AND aro_id=?
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", $group_id, $aro_id);
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return $result && $result->count() > 0;
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}
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/**
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* Counts number of users in given group
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*
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* @param integer $group_id
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* @return integer
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*/
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public function count_rows_by_group_id($group_id)
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{
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return $this->db->query("
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SELECT COUNT(*) AS count
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FROM groups_aro_map where group_id=?
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", $group_id)->current()->count;
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}
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/**
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* Function to get all users belongs to group
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*
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* @author Michal Kliment
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* @param int $group_id
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* @return Mysql_Result object
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*/
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public function get_all_users_by_group_id($group_id)
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{
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return $this->db->query("
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SELECT u.* FROM groups_aro_map g
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LEFT JOIN users u ON g.aro_id = u.id
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WHERE g.group_id = ?
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", $group_id);
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}
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}
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