File : src/aws-net.adb
------------------------------------------------------------------------------
-- Ada Web Server --
-- --
-- Copyright (C) 2000-2002 --
-- ACT-Europe --
-- --
-- Authors: Dmitriy Anisimkov - Pascal Obry --
-- --
-- This library 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. --
-- --
-- This library 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 library; if not, write to the Free Software Foundation, --
-- Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. --
-- --
-- As a special exception, if other files instantiate generics from this --
-- unit, or you link this unit with other files to produce an executable, --
-- this unit does not by itself cause the resulting executable to be --
-- covered by the GNU General Public License. This exception does not --
-- however invalidate any other reasons why the executable file might be --
-- covered by the GNU Public License. --
------------------------------------------------------------------------------
-- $Id: aws-net.adb,v 1.9 2004/04/05 10:54:02 anisimko Exp $
with Ada.Exceptions;
with Ada.Unchecked_Deallocation;
with AWS.Net.Sets.Thin;
with AWS.Net.Std;
with AWS.Net.SSL;
with Interfaces.C;
package body AWS.Net is
use Ada;
function Errno return Integer renames Std.Errno;
----------
-- Free --
----------
procedure Free (Socket : in out Socket_Access) is
procedure Free is
new Ada.Unchecked_Deallocation (Socket_Type'Class, Socket_Access);
begin
if Socket /= null then
Release_Cache (Socket.all);
Free (Socket.all);
Free (Socket);
end if;
end Free;
---------------
-- Host_Name --
---------------
function Host_Name return String is
begin
return Net.Std.Host_Name;
end Host_Name;
-------------------
-- Release_Cache --
-------------------
procedure Release_Cache (Socket : in out Socket_Type'Class) is
procedure Free is
new Ada.Unchecked_Deallocation (RW_Cache, RW_Cache_Access);
begin
Free (Socket.C);
end Release_Cache;
---------------
-- Set_Cache --
---------------
procedure Set_Cache (Socket : in out Socket_Type'Class) is
begin
-- Recreate cache if it already exists.
if Socket.C /= null then
Release_Cache (Socket);
end if;
Socket.C := new RW_Cache;
end Set_Cache;
-----------------
-- Set_Timeout --
-----------------
procedure Set_Timeout
(Socket : in out Socket_Type;
Timeout : in Duration) is
begin
Socket.Timeout := Timeout;
end Set_Timeout;
------------
-- Socket --
------------
function Socket (Security : in Boolean) return Socket_Type'Class is
begin
if Security then
declare
Result : SSL.Socket_Type;
begin
return Result;
end;
else
declare
Result : Std.Socket_Type;
begin
return Result;
end;
end if;
end Socket;
function Socket (Security : in Boolean) return Socket_Access is
begin
return new Socket_Type'Class'(Socket (Security));
end Socket;
--------------
-- Wait_For --
--------------
procedure Wait_For (Mode : in Wait_Mode; Socket : in Socket_Type'Class) is
use AWS.Net.Sets;
use Interfaces;
use type C.int;
use type Thin.Events_Type;
To_Poll_Mode : constant array (Wait_Mode) of Thin.Events_Type
:= (Input => Thin.Pollin, Output => Thin.Pollout);
PFD : Thin.Pollfd
:= (Fd => C.int (Get_FD (Socket)),
Events => To_Poll_Mode (Mode),
Revents => 0);
RC : C.int;
Timeout : C.int;
begin
if Socket.Timeout >= Duration (C.int'Last / 1000) then
Timeout := C.int'Last;
else
Timeout := C.int (Socket.Timeout * 1000);
end if;
RC := Thin.Poll (PFD'Address, 1, Timeout);
case RC is
when -1 =>
Ada.Exceptions.Raise_Exception
(Socket_Error'Identity,
"Wait_For_" & Wait_Mode'Image (Mode)
& " error code" & Integer'Image (Std.Errno));
when 0 =>
Ada.Exceptions.Raise_Exception
(Socket_Error'Identity,
Wait_Mode'Image (Mode) & " timeout.");
when 1 =>
if PFD.REvents = To_Poll_Mode (Mode) then
return;
else
Ada.Exceptions.Raise_Exception
(Socket_Error'Identity,
Wait_Mode'Image (Mode) & "_Wait error.");
end if;
when others => raise Program_Error;
end case;
end Wait_For;
end AWS.Net;