140 lines
5.8 KiB
Plaintext
140 lines
5.8 KiB
Plaintext
-----------------------------------------------------------------------------
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-- --
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-- ADASOCKETS COMPONENTS --
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-- --
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-- S O C K E T S . T H I N --
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-- --
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-- B o d y --
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-- --
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-- Copyright (C) 1998-2020 Samuel Tardieu <sam@rfc1149.net> --
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-- Copyright (C) 1999-2003 Télécom ParisTech --
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-- --
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-- AdaSockets is free software; you can redistribute it and/or modify --
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-- it under terms of the GNU General Public License as published by --
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-- the Free Software Foundation; either version 2, or (at your option) --
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-- any later version. AdaSockets is distributed in the hope that it --
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-- will be useful, but WITHOUT ANY WARRANTY; without even the implied --
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-- warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. --
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-- See the GNU General Public License for more details. You should --
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-- have received a copy of the GNU General Public License distributed --
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-- with AdaSockets; see file COPYING. If not, write to the Free --
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-- Software Foundation, 59 Temple Place - Suite 330, Boston, MA --
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-- 02111-1307, USA. --
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-- --
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-- As a special exception, if other files instantiate generics from --
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-- this unit, or you link this unit with other files to produce an --
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-- executable, this unit does not by itself cause the resulting --
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-- executable to be covered by the GNU General Public License. This --
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-- exception does not however invalidate any other reasons why the --
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-- executable file might be covered by the GNU Public License. --
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-- --
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-- The main repository for this software is located at: --
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-- http://www.rfc1149.net/devel/adasockets.html --
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-- --
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-- If you have any question, please use the issues tracker at: --
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-- https://github.com/samueltardieu/adasockets/issues --
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-- --
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-----------------------------------------------------------------------------
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-- Platform specific file for OpenVMS --
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-- --
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-- Based on Windows specific file written --
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-- by Maxim Reznik <reznikmm@hotmail.com> --
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-----------------------------------------------------------------------------
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with Sockets.Constants;
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with System.Address_To_Access_Conversions;
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package body Sockets.Thin is
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use type System.Address;
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package Int_Conversion is
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new System.Address_To_Access_Conversions (C.int);
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------------------
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-- C_Socketpair --
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------------------
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function C_Socketpair (Domain : C.int;
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Typ : C.int;
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Protocol : C.int;
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Filedes : System.Address)
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return C.int is
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use System.Storage_Elements;
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use type C.char_array;
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INVALID_SOCKET : constant := Failure;
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Listen_Socket : C.int;
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Sin : aliased Sockaddr_In;
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Sin_Len : aliased C.int := Sin'Size / 8;
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fd : Two_Int;
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fd_ptr : Int_Conversion.Object_Pointer;
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Result : C.int;
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begin
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if Domain /= Constants.Af_Inet or
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Typ /= Constants.Sock_Stream or
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Filedes = System.Null_Address
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then
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return Failure;
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end if;
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Listen_Socket := C_Socket (Domain, Typ, Protocol);
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if Listen_Socket = INVALID_SOCKET then
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return Failure;
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end if;
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Sin.Sin_Family := Constants.Af_Inet;
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Sin.Sin_Addr := Inaddr_Any;
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Sin.Sin_Port := 0;
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if C_Bind (Listen_Socket, Sin'Address, Sin'Size / 8) = Failure then
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Result := C_Close (Listen_Socket);
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return Failure;
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end if;
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if C_Listen (Listen_Socket, 1) = Failure then
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Result := C_Close (Listen_Socket);
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return Failure;
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end if;
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if C_Getsockname (Listen_Socket,
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Sin'Address, Sin_Len'Access) = Failure then
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Result := C_Close (Listen_Socket);
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return Failure;
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end if;
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Sin.Sin_Addr := (127, 0, 0, 1);
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fd (1) := C_Socket (Domain, Typ, Protocol);
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if fd (1) = INVALID_SOCKET then
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Result := C_Close (Listen_Socket);
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return Failure;
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end if;
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if C_Connect (fd (1), Sin'Address, Sin'Size / 8) = Failure then
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Result := C_Close (fd (1));
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Result := C_Close (Listen_Socket);
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return Failure;
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end if;
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fd (0) := C_Accept (Listen_Socket, Sin'Address, Sin_Len'Access);
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if fd (0) = INVALID_SOCKET then
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Result := C_Close (fd (1));
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Result := C_Close (Listen_Socket);
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return Failure;
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end if;
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fd_ptr := Int_Conversion.To_Pointer (Filedes);
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fd_ptr.all := fd (0);
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fd_ptr := Int_Conversion.To_Pointer (Filedes + (C.int'Size / 8));
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fd_ptr.all := fd (1);
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return Success;
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end C_Socketpair;
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end Sockets.Thin;
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