user_algorithms.php

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<?php

      /*
      *     This source code is a part of the Ultimix Project. 
      *     It is distributed under BSD license. All other third side source code (like tinyMCE) is distributed under 
      *     it's own license wich could be found from the corresponding files or sources. 
      *     This source code is provided "as is" without any warranties or garanties.
      *
      *     Have a nice day!
      *
      *     @url http://ultimix.sorceforge.net
      *
      *     @author Alexey "gdever" Dodonov
      */

      class user_algorithms_1_0_0{
      
            var                           $User = false;
            
            var                           $Security = false;
            var                           $UserAccess = false;
      
            function                __construct()
            {
                  try
                  {
                        $this->Security = get_package( 'security' , 'last' , __FILE__ );
                        $this->UserAccess = get_package( 'user::user_access' , 'last' , __FILE__ );
                  }
                  catch( Exception $e )
                  {
                        $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
                  }
            }
      
            function                get_by_id( $id )
            {
                  try
                  {
                        $id = $this->Security->get( $id , 'integer' );
                        
                        $Users = $this->UserAccess->unsafe_select( $this->UserAccess->NativeTable.".id = $id" );

                        if( count( $Users ) === 0 || count( $Users ) > 1 )
                        {
                              throw( new Exception( 'User with id '.$id.' was not found' ) );
                        }
                        else
                        {
                              return( $Users[ 0 ] );
                        }
                  }
                  catch( Exception $e )
                  {
                        $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
                  }
            }
      
            function                session_start()
            {
                  if( session_id() == '' )
                  {
                        session_start();
                  }
            }
            
            function                logged_in()
            {
                  try
                  {
                        $this->session_start();
                        
                        if( isset( $_SESSION[ 'login' ] ) )
                        {
                              return( true );
                        }

                        return( false );
                  }
                  catch( Exception $e )
                  {
                        $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
                  }
            }
            
            function                get_login()
            {
                  try
                  {
                        $this->session_start();
                        
                        if( $this->logged_in() )
                        {
                              /* залогинен, значит опознаем его */
                              return( $_SESSION[ 'login' ] );
                        }
                        else
                        {
                              /* не залогинен значит гость */
                              return( 'guest' );
                        }
                        
                        return( false );
                  }
                  catch( Exception $e )
                  {
                        $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
                  }
            }
            
            function                get_id()
            {
                  try
                  {
                        $this->session_start();
                        
                        if( $this->logged_in() )
                        {
                              return( $_SESSION[ 'user_id' ] );
                        }
                        else
                        {
                              /* guest id will be returned */
                              return( $this->UserAccess->GuestUserId );
                        }
                        
                        return( false );
                  }
                  catch( Exception $e )
                  {
                        $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
                  }
            }
            
            function                get_user()
            {
                  try
                  {
                        if( $this->User === false )
                        {
                              $this->User = $this->get_by_id( $this->get_id() );
                        }
                        
                        return( $this->User );
                  }
                  catch( Exception $e )
                  {
                        $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
                  }
            }
            
            function                login( $Login , $id )
            {
                  try
                  {
                        if( $this->user_active( $Login ) )
                        {                             
                              $this->session_start();
                              
                              $_SESSION[ 'login' ] = $Login;
                              $_SESSION[ 'user_id' ] = $id;
                              
                              $this->User = false;
                        }
                        else
                        {
                              return( false );
                        }
                  }
                  catch( Exception $e )
                  {
                        $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
                  }
            }
            
            function                logout()
            {
                  try
                  {
                        $this->session_start();
                        
                        unset( $_SESSION[ 'login' ] );
                        unset( $_SESSION[ 'id' ] );
                        
                        $this->User = false;
                  }
                  catch( Exception $e )
                  {
                        $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
                  }
            }
            
            function                user_active( $Login )
            {
                  try
                  {                       
                        $User = $this->UserAccess->get_user( $Login );

                        return( $User->active == 'active' );
                  }
                  catch( Exception $e )
                  {
                        $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
                  }
            }
            
            function                user_banned( $Login )
            {
                  try
                  {                       
                        $User = $this->UserAccess->get_user( $Login );
                        
                        return( $User->banned );
                  }
                  catch( Exception $e )
                  {
                        $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
                  }
            }
            
            function                get_password_hash( $Login = false )
            {
                  try
                  {
                        if( $Login === false )
                        {
                              $Login = $this->get_login();
                        }
                        
                        $User = $this->UserAccess->get_user( $Login );
                        
                        return( $User->password );
                  }
                  catch( Exception $e )
                  {
                        $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
                  }
            }
            
            function                user_exists( $Login )
            {
                  try
                  {
                        $Login = $this->Security->get( $Login , 'string' );
                        
                        $this->UserAccess->get_user( $Login );
                        
                        return( true );
                  }
                  catch( Exception $e )
                  {
                        return( false );
                  }
            }
            
            function                delete( $ids )
            {
                  try
                  {
                        $ids = $this->Security->get( $ids , 'integer_list' );
                        
                        $Users = $this->UserAccess->unsafe_select( $this->UserAccess->NativeTable.
                              ".id IN( $ids ) and `system` = 0" );
                        
                        $this->UserAccess->delete( implode( ',' , get_field_ex( $Users , 'id' ) ) );
                  }
                  catch( Exception $e )
                  {
                        $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
                  }
            }
            
            function                email_exists( $Email )
            {
                  try
                  {
                        $Email = $this->Security->get( $Email , 'email' );
                        
                        $Records = $this->UserAccess->unsafe_select( "email LIKE '$Email'" );
                        
                        return( count( $Records ) == 1 );
                  }
                  catch( Exception $e )
                  {
                        $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
                  }
            }
            
            function                validate_auth( $Login , $Password , $HashPassed = false )
            {
                  try
                  {
                        $Login = $this->Security->get( $Login , 'string' );
                        $Password = $this->Security->get( $Password , 'string' );
                        
                        $User = $this->UserAccess->get_user( $Login );
                        
                        if( $HashPassed )
                        {
                              return( $Password == get_field( $User , 'password' ) );
                        }
                        else
                        {
                              return( md5( $Password ) == get_field( $User , 'password' ) );
                        }
                  }
                  catch( Exception $e )
                  {
                        $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
                  }
            }
            
            function                generate_password( $Length = 10 )
            {
                  try
                  {
                        $Letters = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
                        $c = strlen( $Letters );
                        
                        $Password = '';
                        
                        for( $i = 0 ; $i < $Length ; $i++ )
                        {
                              $Password .= $Letters[ rand( 0 , $c - 1 ) ];
                        }
                        
                        return( $Password );
                  }
                  catch( Exception $e )
                  {
                        $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
                  }
            }
      }
      
?>