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<?php
/**
* IUser interface.
*
* This interface must be implemented by user objects.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @version $Revision: $ $Date: $
* @package System.Security
* @since 3.0
*/
interface IUser
{
public function getManager();
public function getName();
public function setName($value);
public function getIsGuest();
public function setIsGuest($value);
public function getRoles();
public function setRoles($value);
/**
* @param string role to be tested
* @return boolean whether the user is of this role
*/
public function isInRole($role);
public function saveToString();
public function loadFromString($string);
}
class TUser extends TComponent implements IUser
{
private $_manager;
private $_isGuest=false;
private $_name='';
private $_roles=array();
public function __construct($manager=null)
{
parent::__construct();
$this->_manager=$manager;
}
public function getManager()
{
return $this->_manager;
}
public function getName()
{
return $this->_name;
}
public function setName($value)
{
$this->_name=$value;
}
public function getIsGuest()
{
return $this->_isGuest;
}
public function setIsGuest($value)
{
$this->_isGuest=TPropertyValue::ensureBoolean($value);
if($this->_isGuest)
{
$this->_name='';
$this->_roles=array();
}
}
public function getRoles()
{
return $this->_roles;
}
public function setRoles($value)
{
if(is_array($value))
$this->_roles=$value;
else
{
$this->_roles=array();
foreach(explode(',',$value) as $role)
$this->_roles[]=trim($value);
}
}
public function isInRole($role)
{
return in_array($role,$this->_roles);
}
public function saveToString()
{
return serialize(array($this->_name,$this->_roles,$this->_isGuest));
}
public function loadFromString($data)
{
if(!empty($data))
{
$array=unserialize($data);
$this->_name=$array[0];
$this->_roles=$array[1];
$this->_isGuest=$array[2];
}
return $this;
}
}
class TUserManager extends TComponent implements IModule
{
private $_id;
private $_users=array();
private $_guestName='Guest';
private $_passwordMode='MD5';
public function init($application,$config)
{
foreach($config->getElementsByTagName('user') as $node)
$this->_users[$node->getAttribute('name')]=$node->getAttribute('password');
}
public function getID()
{
return $this->_id;
}
public function setID($value)
{
$this->_id=$value;
}
public function getGuestName()
{
return $this->_guestName;
}
public function setGuestName($value)
{
$this->_guestName=$value;
}
public function getPasswordMode()
{
return $this->_passwordMode;
}
public function setPasswordMode($value)
{
$this->_passwordMode=TPropertyValue::ensureEnum($value,array('Clear','MD5','SHA1'));
}
public function validateUser($username,$password)
{
if($this->_passwordMode==='MD5')
$password=md5($password);
else if($this->_passwordMode==='SHA1')
$password=sha1($password);
return (isset($this->_users[$username]) && $this->_users[$username]===$password);
}
public function logout($user)
{
$user->setIsGuest(true);
$user->setName($this->getGuestName());
}
public function getUser($username=null)
{
if($username===null)
{
$user=new TUser($this);
$user->setIsGuest($username===null);
return $user;
}
else if(isset($this->_users[$username]))
{
$user=new TUser($this);
$user->setName($username);
return $user;
}
else
return null;
}
}
?>
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