Location: PHPKode > projects > Astrocytes > htdocs/include/groupperm.php
<?php

//  ------------------------------------------------------------------------ //
//                                                                           //
//            Astrocytes - Medical Managment Systems                         //
//              Copyright (c) 2005 astrocytes.org                            //
//              <http://www.astrocytes.org/>                                 //
//              <http://sourceforge.net/projects/astroarm/>                  //
//              BY YAZID JIBREL                                              //
//              hide@address.com                                       //
//              Based on XOOPS CMS <xoops.org>                               //
//  ------------------------------------------------------------------------ //
//  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; either version 2 of the License, or        //
//  (at your option) any later version.                                      //
//                                                                           //
//  You may not change or alter any portion of this comment or credits       //
//  of supporting developers from this source code or any supporting         //
//  source code which is considered copyrighted (c) material of the          //
//  original comment or credit authors.                                      //
//                                                                           //
//  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.                             //
//                                                                           //
//  You should have received a copy of the GNU General Public License        //
//  along with this program; if not, write to the Free Software <gnu.org>    //
//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA //
//  ------------------------------------------------------------------------ //
//  ------------------------------------------------------------------------ //
// Authors: author name (hide@address.com),                      //
// URL: http://www.astrocytes.org                                            //
// Package: Package name                                                     //
// Project: Astrocytes                                                       //
// version: 1.1                                                              //
// ------------------------------------------------------------------------- //
if (!defined('ASTRO_ROOT_PATH')) {
	exit();
}

/**
 * 
 * 
 * @package     include
 * 
 * @author	    Kazumi Ono	<hide@address.com>
 * @copyright	copyright (c) 2000-2003 ASTRO.org
 */

/**
 * A group permission
 * 
 * These permissions are managed through a {@link AstroGroupPermHandler} object
 * 
 * @package     include
 * 
 * @author	    Kazumi Ono	<hide@address.com>
 * @copyright	copyright (c) 2000-2003 ASTRO.org
 */
class AstroGroupPerm extends AstroObject
{

    /**
     * Constructor
     * 
     */
    function AstroGroupPerm()
    {
        $this->AstroObject();
        $this->initVar('gperm_id', XOBJ_DTYPE_INT, null, false);
        $this->initVar('gperm_groupid', XOBJ_DTYPE_INT, null, false);
        $this->initVar('gperm_itemid', XOBJ_DTYPE_INT, null, false);
        $this->initVar('gperm_modid', XOBJ_DTYPE_INT, 0, false);
        $this->initVar('gperm_name', XOBJ_DTYPE_OTHER, null, false);
    }
}


/**
* ASTRO group permission handler class.
* 
* This class is responsible for providing data access mechanisms to the data source 
* of ASTRO group permission class objects. 
* This class is an abstract class to be implemented by child group permission classes.
*
* @see          AstroGroupPerm
* @author       Kazumi Ono  <hide@address.com>
* @copyright	copyright (c) 2000-2003 ASTRO.org
*/
class AstroGroupPermHandler extends AstroObjectHandler
{

    /**
     * Create a new {@link AstroGroupPerm} 
     * 
     * @return	bool    $isNew  Flag the object as "new"?
     */
    function &create($isNew = true)
    {
        $perm = new AstroGroupPerm();
        if ($isNew) {
            $perm->setNew();
        }
        return $perm;
    }

    /**
     * Retrieve a group permission
     * 
     * @param	int $id ID
     * 
     * @return	object  {@link AstroGroupPerm}, FALSE on fail
     */
    function &get($id)
    {
        if (intval($id) > 0) {
            $sql = sprintf("SELECT * FROM %s WHERE gperm_id = %u", $this->db->prefix('group_permission'), $id);
            if ( !$result = $this->db->query($sql) ) {
                return false;
            }
            $numrows = $this->db->getRowsNum($result);
            if ( $numrows == 1 ) {
                $perm = new AstroGroupPerm();
                $perm->assignVars($this->db->fetchArray($result));
                return $perm;
            }
        }
        return false;
    }

    /**
     * Store a {@link AstroGroupPerm} 
     * 
     * @param	object  &$perm  {@link AstroGroupPerm} object
     * 
     * @return	bool    TRUE on success
     */
    function insert(&$perm)
    {
        if ( strtolower(get_class($perm)) != 'astrogroupperm' ) {
            return false;
        }
        if ( !$perm->isDirty() ) {
            return true;
        }
        if (!$perm->cleanVars()) {
            return false;
        }
        foreach ($perm->cleanVars as $k => $v) {
            ${$k} = $v;
        }
        if ($perm->isNew()) {
            $gperm_id = $this->db->genId('group_permission_gperm_id_seq');
            $sql = sprintf("INSERT INTO %s (gperm_id, gperm_groupid, gperm_itemid, gperm_modid, gperm_name) VALUES (%u, %u, %u, %u, %s)", $this->db->prefix('group_permission'), $gperm_id, $gperm_groupid, $gperm_itemid, $gperm_modid, $this->db->quoteString($gperm_name));
        } else {
            $sql = sprintf("UPDATE %s SET gperm_groupid = %u, gperm_itemid = %u, gperm_modid = %u WHERE gperm_id = %u", $this->db->prefix('group_permission'), $gperm_groupid, $gperm_itemid, $gperm_modid, $gperm_id);
        }
        if (!$result = $this->db->query($sql)) {
            return false;
        }
        if (empty($gperm_id)) {
            $gperm_id = $this->db->getInsertId();
        }
        $perm->assignVar('gperm_id', $gperm_id);
        return true;
    }

    /**
     * Delete a {@link AstroGroupPerm} 
     * 
     * @param	object  &$perm  
     * 
     * @return	bool    TRUE on success
     */
    function delete(&$perm)
    {
        if (strtolower(get_class($perm)) != 'astrogroupperm') {
            return false;
        }
        $sql = sprintf("DELETE FROM %s WHERE gperm_id = %u", $this->db->prefix('group_permission'), $perm->getVar('gperm_id'));
        if (!$result = $this->db->query($sql)) {
            return false;
        }
        return true;
    }

    /**
     * Retrieve multiple {@link AstroGroupPerm}s 
     * 
     * @param	object  $criteria   {@link CriteriaElement}
     * @param	bool    $id_as_key  Use IDs as array keys?
     * 
     * @return	array   Array of {@link AstroGroupPerm}s 
     */
    function &getObjects($criteria = null, $id_as_key = false)
    {
        $ret = array();
        $limit = $start = 0;
        $sql = 'SELECT * FROM '.$this->db->prefix('group_permission');
        if (isset($criteria) && is_subclass_of($criteria, 'criteriaelement')) {
            $sql .= ' '.$criteria->renderWhere();
            $limit = $criteria->getLimit();
            $start = $criteria->getStart();
        }
        $result = $this->db->query($sql, $limit, $start);
        if (!$result) {
            return $ret;
        }
        while ($myrow = $this->db->fetchArray($result)) {
            $perm = new AstroGroupPerm();
            $perm->assignVars($myrow);
            if (!$id_as_key) {
                $ret[] =& $perm;
            } else {
                $ret[$myrow['gperm_id']] =& $perm;
            }
            unset($perm);
        }
        return $ret;
    }

    /**
     * Count some {@link AstroGroupPerm}s 
     * 
     * @param	object  $criteria   {@link CriteriaElement} 
     * 
     * @return	int
     */
    function getCount($criteria = null)
    {
        $sql = 'SELECT COUNT(*) FROM '.$this->db->prefix('group_permission');
        if (isset($criteria) && is_subclass_of($criteria, 'criteriaelement')) {
            $sql .= ' '.$criteria->renderWhere();
        }
        $result = $this->db->query($sql);
        if (!$result) {
            return 0;
        }
        list($count) = $this->db->fetchRow($result);
        return $count;
    }

    /**
     * Delete all permissions by a certain criteria
     * 
     * @param	object  $criteria   {@link CriteriaElement} 
     * 
     * @return	bool    TRUE on success
     */
    function deleteAll($criteria = null)
    {
        $sql = sprintf("DELETE FROM %s", $this->db->prefix('group_permission'));		if (isset($criteria) && is_subclass_of($criteria, 'criteriaelement')) {
            $sql .= ' '.$criteria->renderWhere();
        }
        if (!$result = $this->db->query($sql)) {
            return false;
        }
        return true;
    }

    /**
     * Delete all module specific permissions assigned for a group
     * 
     * @param	int  $gperm_groupid ID of a group
     * @param	int  $gperm_modid ID of a module
     * 
     * @return	bool TRUE on success
     */
    function deleteByGroup($gperm_groupid, $gperm_modid = null)
    {
        $criteria = new CriteriaCompo(new Criteria('gperm_groupid', intval($gperm_groupid)));
		if (isset($gperm_modid)) {
            $criteria->add(new Criteria('gperm_modid', intval($gperm_modid)));
        }
        return $this->deleteAll($criteria);
    }

    /**
     * Delete all module specific permissions
     * 
     * @param	int  $gperm_modid ID of a module
     * @param	string  $gperm_name Name of a module permission
     * @param	int  $gperm_itemid ID of a module item
     * 
     * @return	bool TRUE on success
     */
    function deleteByModule($gperm_modid, $gperm_name = null, $gperm_itemid = null)
    {
        $criteria = new CriteriaCompo(new Criteria('gperm_modid', intval($gperm_modid)));
		if (isset($gperm_name)) {
			$criteria->add(new Criteria('gperm_name', $gperm_name));
			if (isset($gperm_itemid)) {
				$criteria->add(new Criteria('gperm_itemid', intval($gperm_itemid)));
			}
		}
        return $this->deleteAll($criteria);
    }
    /**#@-*/

    /**
     * Check permission
     * 
     * @param	string    $gperm_name       Name of permission
     * @param	int       $gperm_itemid     ID of an item
     * @param	int/array $gperm_groupid    A group ID or an array of group IDs
     * @param	int       $gperm_modid      ID of a module
     * 
     * @return	bool    TRUE if permission is enabled
     */
    function checkRight($gperm_name, $gperm_itemid, $gperm_groupid, $gperm_modid = 1)
    {
        $criteria = new CriteriaCompo(new Criteria('gperm_modid', $gperm_modid));
        $criteria->add(new Criteria('gperm_name', $gperm_name));
        $gperm_itemid = intval($gperm_itemid);
        if ($gperm_itemid > 0) {
            $criteria->add(new Criteria('gperm_itemid', $gperm_itemid));
        }
        if (is_array($gperm_groupid)) {
			if (in_array(ASTRO_GROUP_ADMIN, $gperm_groupid)) {
                return true;
            }
            $criteria2 = new CriteriaCompo();
            foreach ($gperm_groupid as $gid) {
                $criteria2->add(new Criteria('gperm_groupid', $gid), 'OR');
            }
            $criteria->add($criteria2);
        } else {
            if (ASTRO_GROUP_ADMIN == $gperm_groupid) {
                return true;
            }
            $criteria->add(new Criteria('gperm_groupid', $gperm_groupid));
        }
        if ($this->getCount($criteria) > 0) {
            return true;
        }
        return false;
    }

    /**
     * Add a permission
     * 
     * @param	string  $gperm_name       Name of permission
     * @param	int     $gperm_itemid     ID of an item
     * @param	int     $gperm_groupid    ID of a group
     * @param	int     $gperm_modid      ID of a module
     *
     * @return	bool    TRUE jf success
     */
    function addRight($gperm_name, $gperm_itemid, $gperm_groupid, $gperm_modid = 1)
    {
        $perm =& $this->create();
        $perm->setVar('gperm_name', $gperm_name);
        $perm->setVar('gperm_groupid', $gperm_groupid);
        $perm->setVar('gperm_itemid', $gperm_itemid);
        $perm->setVar('gperm_modid', $gperm_modid);
        return $this->insert($perm);
    }

    /**
     * Get all item IDs that a group is assigned a specific permission
     * 
     * @param	string    $gperm_name       Name of permission
     * @param	int/array $gperm_groupid    A group ID or an array of group IDs
     * @param	int       $gperm_modid      ID of a module
     *
     * @return  array     array of item IDs
     */
	function getItemIds($gperm_name, $gperm_groupid, $gperm_modid = 1)
	{
		$ret = array();
		$criteria = new CriteriaCompo(new Criteria('gperm_name', $gperm_name));
		$criteria->add(new Criteria('gperm_modid', intval($gperm_modid)));
		if (is_array($gperm_groupid)) {
            $criteria2 = new CriteriaCompo();
            foreach ($gperm_groupid as $gid) {
                $criteria2->add(new Criteria('gperm_groupid', $gid), 'OR');
            }
            $criteria->add($criteria2);
		} else {
			$criteria->add(new Criteria('gperm_groupid', intval($gperm_groupid)));
		}
		$perms =& $this->getObjects($criteria, true);
		foreach (array_keys($perms) as $i) {
			$ret[] = $perms[$i]->getVar('gperm_itemid');
		}
		return array_unique($ret);
	}

    /**
     * Get all group IDs assigned a specific permission for a particular item
     * 
     * @param	string  $gperm_name       Name of permission
     * @param	int     $gperm_itemid     ID of an item
     * @param	int     $gperm_modid      ID of a module
     *
     * @return  array   array of group IDs
     */
	function getGroupIds($gperm_name, $gperm_itemid, $gperm_modid = 1)
	{
		$ret = array();
		$criteria = new CriteriaCompo(new Criteria('gperm_name', $gperm_name));
		$criteria->add(new Criteria('gperm_itemid', intval($gperm_itemid)));
		$criteria->add(new Criteria('gperm_modid', intval($gperm_modid)));
		$perms =& $this->getObjects($criteria, true);
		foreach (array_keys($perms) as $i) {
			$ret[] = $perms[$i]->getVar('gperm_groupid');
		}
		return $ret;
	}
}
?>
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