1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
5 -- G N A T . S O C K E T S . T H I N --
9 -- Copyright (C) 2001-2004 Ada Core Technologies, Inc. --
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 2, 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. See the GNU General Public License --
17 -- for more details. You should have received a copy of the GNU General --
18 -- Public License distributed with GNAT; see file COPYING. If not, write --
19 -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
20 -- MA 02111-1307, USA. --
22 -- As a special exception, if other files instantiate generics from this --
23 -- unit, or you link this unit with other files to produce an executable, --
24 -- this unit does not by itself cause the resulting executable to be --
25 -- covered by the GNU General Public License. This exception does not --
26 -- however invalidate any other reasons why the executable file might be --
27 -- covered by the GNU Public License. --
29 -- GNAT was originally developed by the GNAT team at New York University. --
30 -- Extensive contributions were provided by Ada Core Technologies Inc. --
32 ------------------------------------------------------------------------------
34 -- This package provides a target dependent thin interface to the sockets
35 -- layer for use by the GNAT.Sockets package (g-socket.ads). This package
36 -- should not be directly with'ed by an applications program.
38 -- This version is for NT
40 with Interfaces.C.Pointers;
41 with Interfaces.C.Strings;
43 with GNAT.Sockets.Constants;
47 package GNAT.Sockets.Thin is
49 package C renames Interfaces.C;
52 -- So that we can declare the Failure constant below.
54 Success : constant C.int := 0;
55 Failure : constant C.int := -1;
57 function Socket_Errno return Integer;
58 -- Returns last socket error number.
60 procedure Set_Socket_Errno (Errno : Integer);
61 -- Set last socket error number.
63 function Socket_Error_Message
65 return C.Strings.chars_ptr;
66 -- Returns the error message string for the error number Errno. If
67 -- Errno is not known it returns "Unknown system error".
69 subtype Fd_Set_Access is System.Address;
70 No_Fd_Set : constant Fd_Set_Access := System.Null_Address;
72 type Timeval_Unit is new C.long;
73 pragma Convention (C, Timeval_Unit);
75 type Timeval is record
76 Tv_Sec : Timeval_Unit;
77 Tv_Usec : Timeval_Unit;
79 pragma Convention (C, Timeval);
81 type Timeval_Access is access all Timeval;
82 pragma Convention (C, Timeval_Access);
84 Immediat : constant Timeval := (0, 0);
86 type Int_Access is access all C.int;
87 pragma Convention (C, Int_Access);
88 -- Access to C integers
90 type Chars_Ptr_Array is array (C.size_t range <>) of
91 aliased C.Strings.chars_ptr;
93 package Chars_Ptr_Pointers is
94 new C.Pointers (C.size_t, C.Strings.chars_ptr, Chars_Ptr_Array,
96 -- Arrays of C (char *)
98 type In_Addr is record
99 S_B1, S_B2, S_B3, S_B4 : C.unsigned_char;
101 pragma Convention (C, In_Addr);
104 type In_Addr_Access is access all In_Addr;
105 pragma Convention (C, In_Addr_Access);
106 -- Access to internet address
108 Inaddr_Any : aliased constant In_Addr := (others => 0);
109 -- Any internet address (all the interfaces)
111 type In_Addr_Access_Array is array (C.size_t range <>)
112 of aliased In_Addr_Access;
113 pragma Convention (C, In_Addr_Access_Array);
114 package In_Addr_Access_Pointers is
115 new C.Pointers (C.size_t, In_Addr_Access, In_Addr_Access_Array, null);
116 -- Array of internet addresses
118 type Sockaddr is record
119 Sa_Family : C.unsigned_short;
120 Sa_Data : C.char_array (1 .. 14);
122 pragma Convention (C, Sockaddr);
125 type Sockaddr_Access is access all Sockaddr;
126 pragma Convention (C, Sockaddr_Access);
127 -- Access to socket address
129 type Sockaddr_In is record
130 Sin_Family : C.unsigned_short := Constants.AF_INET;
131 Sin_Port : C.unsigned_short := 0;
132 Sin_Addr : In_Addr := Inaddr_Any;
133 Sin_Zero : C.char_array (1 .. 8) := (others => C.char'Val (0));
135 pragma Convention (C, Sockaddr_In);
136 -- Internet socket address
138 type Sockaddr_In_Access is access all Sockaddr_In;
139 pragma Convention (C, Sockaddr_In_Access);
140 -- Access to internet socket address
143 (Sin : Sockaddr_In_Access;
145 pragma Inline (Set_Length);
146 -- Set Sin.Sin_Length to Len.
147 -- On this platform, nothing is done as there is no such field.
150 (Sin : Sockaddr_In_Access;
152 pragma Inline (Set_Family);
153 -- Set Sin.Sin_Family to Family
156 (Sin : Sockaddr_In_Access;
157 Port : C.unsigned_short);
158 pragma Inline (Set_Port);
159 -- Set Sin.Sin_Port to Port
161 procedure Set_Address
162 (Sin : Sockaddr_In_Access;
164 pragma Inline (Set_Address);
165 -- Set Sin.Sin_Addr to Address
167 type Hostent is record
168 H_Name : C.Strings.chars_ptr;
169 H_Aliases : Chars_Ptr_Pointers.Pointer;
170 H_Addrtype : C.short;
172 H_Addr_List : In_Addr_Access_Pointers.Pointer;
174 pragma Convention (C, Hostent);
177 type Hostent_Access is access all Hostent;
178 pragma Convention (C, Hostent_Access);
179 -- Access to host entry
181 type Servent is record
182 S_Name : C.Strings.chars_ptr;
183 S_Aliases : Chars_Ptr_Pointers.Pointer;
185 S_Proto : C.Strings.chars_ptr;
187 pragma Convention (C, Servent);
190 type Servent_Access is access all Servent;
191 pragma Convention (C, Servent_Access);
192 -- Access to service entry
194 type Two_Int is array (0 .. 1) of C.int;
195 pragma Convention (C, Two_Int);
200 Addr : System.Address;
201 Addrlen : access C.int) return C.int;
205 Name : System.Address;
206 Namelen : C.int) return C.int;
209 (Fd : C.int) return C.int;
213 Name : System.Address;
214 Namelen : C.int) return C.int;
216 function C_Gethostbyaddr
217 (Addr : System.Address;
219 Typ : C.int) return Hostent_Access;
221 function C_Gethostbyname
222 (Name : C.char_array) return Hostent_Access;
224 function C_Gethostname
225 (Name : System.Address;
226 Namelen : C.int) return C.int;
228 function C_Getpeername
230 Name : System.Address;
231 Namelen : access C.int) return C.int;
233 function C_Getservbyname
234 (Name : C.char_array;
235 Proto : C.char_array) return Servent_Access;
237 function C_Getservbyport
239 Proto : C.char_array) return Servent_Access;
241 function C_Getsockname
243 Name : System.Address;
244 Namelen : access C.int) return C.int;
246 function C_Getsockopt
250 Optval : System.Address;
251 Optlen : access C.int) return C.int;
254 (Cp : C.Strings.chars_ptr) return C.int;
259 Arg : Int_Access) return C.int;
263 Backlog : C.int) return C.int;
267 Buf : System.Address;
268 Nbyte : C.int) return C.int;
272 Iov : System.Address;
273 Iovcnt : C.int) return C.int;
277 Buf : System.Address;
279 Flags : C.int) return C.int;
283 Buf : System.Address;
286 From : Sockaddr_In_Access;
287 Fromlen : access C.int) return C.int;
291 Readfds : Fd_Set_Access;
292 Writefds : Fd_Set_Access;
293 Exceptfds : Fd_Set_Access;
294 Timeout : Timeval_Access) return C.int;
298 Buf : System.Address;
300 Flags : C.int) return C.int;
304 Msg : System.Address;
307 To : Sockaddr_In_Access;
308 Tolen : C.int) return C.int;
310 function C_Setsockopt
314 Optval : System.Address;
315 Optlen : C.int) return C.int;
319 How : C.int) return C.int;
324 Protocol : C.int) return C.int;
327 (Errnum : C.int) return C.Strings.chars_ptr;
330 (Command : System.Address) return C.int;
334 Buf : System.Address;
335 Nbyte : C.int) return C.int;
339 Iov : System.Address;
340 Iovcnt : C.int) return C.int;
343 (WS_Version : Interfaces.C.int;
344 WSADataAddress : System.Address) return Interfaces.C.int;
346 procedure Free_Socket_Set
347 (Set : Fd_Set_Access);
348 -- Free system-dependent socket set.
350 procedure Get_Socket_From_Set
351 (Set : Fd_Set_Access;
354 -- Get last socket in Socket and remove it from the socket
355 -- set. The parameter Last is a maximum value of the largest
356 -- socket. This hint is used to avoid scanning very large socket
357 -- sets. After a call to Get_Socket_From_Set, Last is set back to
358 -- the real largest socket in the socket set.
360 procedure Insert_Socket_In_Set
361 (Set : Fd_Set_Access;
363 -- Insert socket in the socket set
365 function Is_Socket_In_Set
366 (Set : Fd_Set_Access;
367 Socket : C.int) return C.int;
368 -- Check whether Socket is in the socket set, return a non-zero
369 -- value if it is, zero if it is not.
371 procedure Last_Socket_In_Set
372 (Set : Fd_Set_Access;
374 -- Find the largest socket in the socket set. This is needed for
375 -- select(). When Last_Socket_In_Set is called, parameter Last is
376 -- a maximum value of the largest socket. This hint is used to
377 -- avoid scanning very large socket sets. After the call, Last is
378 -- set back to the real largest socket in the socket set.
380 function New_Socket_Set
381 (Set : Fd_Set_Access) return Fd_Set_Access;
382 -- Allocate a new socket set which is a system-dependent structure
383 -- and initialize by copying Set if it is non-null, by making it
386 procedure Remove_Socket_From_Set
387 (Set : Fd_Set_Access;
389 -- Remove socket from the socket set
391 procedure WSACleanup;
394 procedure Initialize (Process_Blocking_IO : Boolean := False);
397 pragma Import (Stdcall, C_Accept, "accept");
398 pragma Import (Stdcall, C_Bind, "bind");
399 pragma Import (Stdcall, C_Close, "closesocket");
400 pragma Import (Stdcall, C_Gethostbyaddr, "gethostbyaddr");
401 pragma Import (Stdcall, C_Gethostbyname, "gethostbyname");
402 pragma Import (Stdcall, C_Gethostname, "gethostname");
403 pragma Import (Stdcall, C_Getpeername, "getpeername");
404 pragma Import (Stdcall, C_Getservbyname, "getservbyname");
405 pragma Import (Stdcall, C_Getservbyport, "getservbyport");
406 pragma Import (Stdcall, C_Getsockname, "getsockname");
407 pragma Import (Stdcall, C_Getsockopt, "getsockopt");
408 pragma Import (Stdcall, C_Inet_Addr, "inet_addr");
409 pragma Import (Stdcall, C_Ioctl, "ioctlsocket");
410 pragma Import (Stdcall, C_Listen, "listen");
411 pragma Import (C, C_Read, "_read");
412 pragma Import (Stdcall, C_Recv, "recv");
413 pragma Import (Stdcall, C_Recvfrom, "recvfrom");
414 pragma Import (Stdcall, C_Send, "send");
415 pragma Import (Stdcall, C_Sendto, "sendto");
416 pragma Import (Stdcall, C_Setsockopt, "setsockopt");
417 pragma Import (Stdcall, C_Shutdown, "shutdown");
418 pragma Import (Stdcall, C_Socket, "socket");
419 pragma Import (C, C_Strerror, "strerror");
420 pragma Import (C, C_System, "_system");
421 pragma Import (C, C_Write, "_write");
422 pragma Import (Stdcall, Socket_Errno, "WSAGetLastError");
423 pragma Import (Stdcall, Set_Socket_Errno, "WSASetLastError");
424 pragma Import (Stdcall, WSAStartup, "WSAStartup");
425 pragma Import (Stdcall, WSACleanup, "WSACleanup");
427 pragma Import (C, Free_Socket_Set, "__gnat_free_socket_set");
428 pragma Import (C, Get_Socket_From_Set, "__gnat_get_socket_from_set");
429 pragma Import (C, Is_Socket_In_Set, "__gnat_is_socket_in_set");
430 pragma Import (C, Last_Socket_In_Set, "__gnat_last_socket_in_set");
431 pragma Import (C, New_Socket_Set, "__gnat_new_socket_set");
432 pragma Import (C, Insert_Socket_In_Set, "__gnat_insert_socket_in_set");
433 pragma Import (C, Remove_Socket_From_Set, "__gnat_remove_socket_from_set");
434 end GNAT.Sockets.Thin;