1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT COMPILER COMPONENTS                         --
4--                                                                          --
5--                    G N A T . S O C K E T S . T H I N                     --
6--                                                                          --
7--                                 S p e c                                  --
8--                                                                          --
9--                     Copyright (C) 2001-2012, AdaCore                     --
10--                                                                          --
11-- GNAT is free software;  you can  redistribute it  and/or modify it under --
12-- terms of the  GNU General Public License as published  by the Free Soft- --
13-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
14-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
15-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
16-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
17--                                                                          --
18-- As a special exception under Section 7 of GPL version 3, you are granted --
19-- additional permissions described in the GCC Runtime Library Exception,   --
20-- version 3.1, as published by the Free Software Foundation.               --
21--                                                                          --
22-- You should have received a copy of the GNU General Public License and    --
23-- a copy of the GCC Runtime Library Exception along with this program;     --
24-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
25-- <http://www.gnu.org/licenses/>.                                          --
26--                                                                          --
27-- GNAT was originally developed  by the GNAT team at  New York University. --
28-- Extensive contributions were provided by Ada Core Technologies Inc.      --
29--                                                                          --
30------------------------------------------------------------------------------
31
32--  This package provides a target dependent thin interface to the sockets
33--  layer for use by the GNAT.Sockets package (g-socket.ads). This package
34--  should not be directly with'ed by an applications program.
35
36--  This version is for NT
37
38with Interfaces.C.Strings;
39
40with GNAT.Sockets.Thin_Common;
41
42with System;
43with System.CRTL;
44
45package GNAT.Sockets.Thin is
46
47   use Thin_Common;
48
49   package C renames Interfaces.C;
50
51   use type System.CRTL.ssize_t;
52
53   function Socket_Errno return Integer;
54   --  Returns last socket error number
55
56   procedure Set_Socket_Errno (Errno : Integer);
57   --  Set last socket error number
58
59   function Socket_Error_Message (Errno : Integer) return C.Strings.chars_ptr;
60   --  Returns the error message string for the error number Errno. If Errno is
61   --  not known, returns "Unknown system error".
62
63   function Host_Errno return Integer;
64   pragma Import (C, Host_Errno, "__gnat_get_h_errno");
65   --  Returns last host error number
66
67   package Host_Error_Messages is
68
69      function Host_Error_Message
70        (H_Errno : Integer) return C.Strings.chars_ptr;
71      --  Returns the error message string for the host error number H_Errno.
72      --  If H_Errno is not known, returns "Unknown system error".
73
74   end Host_Error_Messages;
75
76   --------------------------------
77   -- Standard library functions --
78   --------------------------------
79
80   function C_Accept
81     (S       : C.int;
82      Addr    : System.Address;
83      Addrlen : not null access C.int) return C.int;
84
85   function C_Bind
86     (S       : C.int;
87      Name    : System.Address;
88      Namelen : C.int) return C.int;
89
90   function C_Close
91     (Fd : C.int) return C.int;
92
93   function C_Connect
94     (S       : C.int;
95      Name    : System.Address;
96      Namelen : C.int) return C.int;
97
98   function C_Gethostname
99     (Name    : System.Address;
100      Namelen : C.int) return C.int;
101
102   function C_Getpeername
103     (S       : C.int;
104      Name    : System.Address;
105      Namelen : not null access C.int) return C.int;
106
107   function C_Getsockname
108     (S       : C.int;
109      Name    : System.Address;
110      Namelen : not null access C.int) return C.int;
111
112   function C_Getsockopt
113     (S       : C.int;
114      Level   : C.int;
115      Optname : C.int;
116      Optval  : System.Address;
117      Optlen  : not null access C.int) return C.int;
118
119   function Socket_Ioctl
120     (S   : C.int;
121      Req : SOSC.IOCTL_Req_T;
122      Arg : access C.int) return C.int;
123
124   function C_Listen
125     (S       : C.int;
126      Backlog : C.int) return C.int;
127
128   function C_Recv
129     (S     : C.int;
130      Msg   : System.Address;
131      Len   : C.int;
132      Flags : C.int) return C.int;
133
134   function C_Recvfrom
135     (S       : C.int;
136      Msg     : System.Address;
137      Len     : C.int;
138      Flags   : C.int;
139      From    : System.Address;
140      Fromlen : not null access C.int) return C.int;
141
142   function C_Recvmsg
143     (S     : C.int;
144      Msg   : System.Address;
145      Flags : C.int) return System.CRTL.ssize_t;
146
147   function C_Select
148     (Nfds      : C.int;
149      Readfds   : access Fd_Set;
150      Writefds  : access Fd_Set;
151      Exceptfds : access Fd_Set;
152      Timeout   : Timeval_Access) return C.int;
153
154   function C_Sendmsg
155     (S     : C.int;
156      Msg   : System.Address;
157      Flags : C.int) return System.CRTL.ssize_t;
158
159   function C_Sendto
160     (S     : C.int;
161      Msg   : System.Address;
162      Len   : C.int;
163      Flags : C.int;
164      To    : System.Address;
165      Tolen : C.int) return C.int;
166
167   function C_Setsockopt
168     (S       : C.int;
169      Level   : C.int;
170      Optname : C.int;
171      Optval  : System.Address;
172      Optlen  : C.int) return C.int;
173
174   function C_Shutdown
175     (S   : C.int;
176      How : C.int) return C.int;
177
178   function C_Socket
179     (Domain   : C.int;
180      Typ      : C.int;
181      Protocol : C.int) return C.int;
182
183   function C_System
184     (Command : System.Address) return C.int;
185
186   function WSAStartup
187     (WS_Version     : Interfaces.C.unsigned_short;
188      WSADataAddress : System.Address) return Interfaces.C.int;
189
190   -------------------------------------------------------
191   -- Signalling file descriptors for selector abortion --
192   -------------------------------------------------------
193
194   package Signalling_Fds is
195
196      function Create (Fds : not null access Fd_Pair) return C.int;
197      pragma Convention (C, Create);
198      --  Create a pair of connected descriptors suitable for use with C_Select
199      --  (used for signalling in Selector objects).
200
201      function Read (Rsig : C.int) return C.int;
202      pragma Convention (C, Read);
203      --  Read one byte of data from rsig, the read end of a pair of signalling
204      --  fds created by Create_Signalling_Fds.
205
206      function Write (Wsig : C.int) return C.int;
207      pragma Convention (C, Write);
208      --  Write one byte of data to wsig, the write end of a pair of signalling
209      --  fds created by Create_Signalling_Fds.
210
211      procedure Close (Sig : C.int);
212      pragma Convention (C, Close);
213      --  Close one end of a pair of signalling fds (ignoring any error)
214
215   end Signalling_Fds;
216
217   procedure WSACleanup;
218
219   procedure Initialize;
220   procedure Finalize;
221
222private
223   pragma Import (Stdcall, C_Accept, "accept");
224   pragma Import (Stdcall, C_Bind, "bind");
225   pragma Import (Stdcall, C_Close, "closesocket");
226   pragma Import (Stdcall, C_Gethostname, "gethostname");
227   pragma Import (Stdcall, C_Getpeername, "getpeername");
228   pragma Import (Stdcall, C_Getsockname, "getsockname");
229   pragma Import (Stdcall, C_Getsockopt, "getsockopt");
230   pragma Import (Stdcall, C_Listen, "listen");
231   pragma Import (Stdcall, C_Recv, "recv");
232   pragma Import (Stdcall, C_Recvfrom, "recvfrom");
233   pragma Import (Stdcall, C_Sendto, "sendto");
234   pragma Import (Stdcall, C_Setsockopt, "setsockopt");
235   pragma Import (Stdcall, C_Shutdown, "shutdown");
236   pragma Import (Stdcall, C_Socket, "socket");
237   pragma Import (C, C_System, "_system");
238   pragma Import (Stdcall, Socket_Errno, "WSAGetLastError");
239   pragma Import (Stdcall, Set_Socket_Errno, "WSASetLastError");
240   pragma Import (Stdcall, WSAStartup, "WSAStartup");
241   pragma Import (Stdcall, WSACleanup, "WSACleanup");
242
243end GNAT.Sockets.Thin;
244