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8912421c LC |
1 | /* Provide a sys/socket header file for systems lacking it (read: MinGW) |
2 | and for systems where it is incomplete. | |
3 | Copyright (C) 2005-2009 Free Software Foundation, Inc. | |
4 | Written by Simon Josefsson. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU Lesser General Public License as published by | |
8 | the Free Software Foundation; either version 2, or (at your option) | |
9 | any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public License | |
17 | along with this program; if not, write to the Free Software Foundation, | |
18 | Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ | |
19 | ||
20 | /* This file is supposed to be used on platforms that lack <sys/socket.h>, | |
21 | on platforms where <sys/socket.h> cannot be included standalone, and on | |
22 | platforms where <sys/socket.h> does not provide all necessary definitions. | |
23 | It is intended to provide definitions and prototypes needed by an | |
24 | application. */ | |
25 | ||
26 | #ifndef _GL_SYS_SOCKET_H | |
27 | ||
28 | #if @HAVE_SYS_SOCKET_H@ | |
29 | ||
30 | # if __GNUC__ >= 3 | |
31 | @PRAGMA_SYSTEM_HEADER@ | |
32 | # endif | |
33 | ||
34 | /* On many platforms, <sys/socket.h> assumes prior inclusion of | |
35 | <sys/types.h>. */ | |
36 | # include <sys/types.h> | |
37 | ||
38 | /* The include_next requires a split double-inclusion guard. */ | |
39 | # @INCLUDE_NEXT@ @NEXT_SYS_SOCKET_H@ | |
40 | ||
41 | #endif | |
42 | ||
43 | #ifndef _GL_SYS_SOCKET_H | |
44 | #define _GL_SYS_SOCKET_H | |
45 | ||
46 | #if !@HAVE_SA_FAMILY_T@ | |
47 | typedef unsigned short sa_family_t; | |
48 | #endif | |
49 | ||
50 | #if !@HAVE_STRUCT_SOCKADDR_STORAGE@ | |
51 | # include <alignof.h> | |
52 | /* Code taken from glibc sysdeps/unix/sysv/linux/bits/socket.h on | |
53 | 2009-05-08, licensed under LGPLv2.1+, plus portability fixes. */ | |
54 | # define __ss_aligntype unsigned long int | |
55 | # define _SS_SIZE 256 | |
56 | # define _SS_PADSIZE \ | |
57 | (_SS_SIZE - ((sizeof (sa_family_t) >= alignof (__ss_aligntype) \ | |
58 | ? sizeof (sa_family_t) \ | |
59 | : alignof (__ss_aligntype)) \ | |
60 | + sizeof (__ss_aligntype))) | |
61 | ||
62 | struct sockaddr_storage | |
63 | { | |
64 | sa_family_t ss_family; /* Address family, etc. */ | |
65 | __ss_aligntype __ss_align; /* Force desired alignment. */ | |
66 | char __ss_padding[_SS_PADSIZE]; | |
67 | }; | |
68 | #endif | |
69 | ||
70 | #if @HAVE_SYS_SOCKET_H@ | |
71 | ||
72 | /* A platform that has <sys/socket.h>. */ | |
73 | ||
74 | /* For shutdown(). */ | |
75 | # if !defined SHUT_RD | |
76 | # define SHUT_RD 0 | |
77 | # endif | |
78 | # if !defined SHUT_WR | |
79 | # define SHUT_WR 1 | |
80 | # endif | |
81 | # if !defined SHUT_RDWR | |
82 | # define SHUT_RDWR 2 | |
83 | # endif | |
84 | ||
85 | #else | |
86 | ||
87 | # ifdef __CYGWIN__ | |
88 | # error "Cygwin does have a sys/socket.h, doesn't it?!?" | |
89 | # endif | |
90 | ||
91 | /* A platform that lacks <sys/socket.h>. | |
92 | ||
93 | Currently only MinGW is supported. See the gnulib manual regarding | |
94 | Windows sockets. MinGW has the header files winsock2.h and | |
95 | ws2tcpip.h that declare the sys/socket.h definitions we need. Note | |
96 | that you can influence which definitions you get by setting the | |
97 | WINVER symbol before including these two files. For example, | |
98 | getaddrinfo is only available if _WIN32_WINNT >= 0x0501 (that | |
99 | symbol is set indiriectly through WINVER). You can set this by | |
100 | adding AC_DEFINE(WINVER, 0x0501) to configure.ac. Note that your | |
101 | code may not run on older Windows releases then. My Windows 2000 | |
102 | box was not able to run the code, for example. The situation is | |
103 | slightly confusing because: | |
104 | http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winsock/winsock/getaddrinfo_2.asp | |
105 | suggests that getaddrinfo should be available on all Windows | |
106 | releases. */ | |
107 | ||
108 | ||
109 | # if @HAVE_WINSOCK2_H@ | |
110 | # include <winsock2.h> | |
111 | # endif | |
112 | # if @HAVE_WS2TCPIP_H@ | |
113 | # include <ws2tcpip.h> | |
114 | # endif | |
115 | ||
116 | /* For shutdown(). */ | |
117 | # if !defined SHUT_RD && defined SD_RECEIVE | |
118 | # define SHUT_RD SD_RECEIVE | |
119 | # endif | |
120 | # if !defined SHUT_WR && defined SD_SEND | |
121 | # define SHUT_WR SD_SEND | |
122 | # endif | |
123 | # if !defined SHUT_RDWR && defined SD_BOTH | |
124 | # define SHUT_RDWR SD_BOTH | |
125 | # endif | |
126 | ||
127 | /* The definition of GL_LINK_WARNING is copied here. */ | |
128 | ||
129 | # if @HAVE_WINSOCK2_H@ | |
130 | /* Include headers needed by the emulation code. */ | |
131 | # include <sys/types.h> | |
132 | # include <io.h> | |
133 | ||
134 | typedef int socklen_t; | |
135 | ||
136 | # endif | |
137 | ||
138 | # ifdef __cplusplus | |
139 | extern "C" { | |
140 | # endif | |
141 | ||
142 | # if @HAVE_WINSOCK2_H@ | |
143 | ||
144 | /* Re-define FD_ISSET to avoid a WSA call while we are not using | |
145 | network sockets. */ | |
146 | static inline int | |
147 | rpl_fd_isset (SOCKET fd, fd_set * set) | |
148 | { | |
149 | u_int i; | |
150 | if (set == NULL) | |
151 | return 0; | |
152 | ||
153 | for (i = 0; i < set->fd_count; i++) | |
154 | if (set->fd_array[i] == fd) | |
155 | return 1; | |
156 | ||
157 | return 0; | |
158 | } | |
159 | ||
160 | # undef FD_ISSET | |
161 | # define FD_ISSET(fd, set) rpl_fd_isset(fd, set) | |
162 | ||
163 | # endif | |
164 | ||
165 | /* Wrap everything else to use libc file descriptors for sockets. */ | |
166 | ||
167 | # if @HAVE_WINSOCK2_H@ && !defined _GL_UNISTD_H | |
168 | # undef close | |
169 | # define close close_used_without_including_unistd_h | |
170 | # endif | |
171 | ||
172 | # if @HAVE_WINSOCK2_H@ && !defined _GL_UNISTD_H | |
173 | # undef gethostname | |
174 | # define gethostname gethostname_used_without_including_unistd_h | |
175 | # endif | |
176 | ||
177 | # if @GNULIB_SOCKET@ | |
178 | # if @HAVE_WINSOCK2_H@ | |
179 | # undef socket | |
180 | # define socket rpl_socket | |
181 | extern int rpl_socket (int, int, int protocol); | |
182 | # endif | |
183 | # elif @HAVE_WINSOCK2_H@ | |
184 | # undef socket | |
185 | # define socket socket_used_without_requesting_gnulib_module_socket | |
186 | # elif defined GNULIB_POSIXCHECK | |
187 | # undef socket | |
188 | # define socket(d,t,p) \ | |
189 | (GL_LINK_WARNING ("socket is not always POSIX compliant - " \ | |
190 | "use gnulib module socket for portability"), \ | |
191 | socket (d, t, p)) | |
192 | # endif | |
193 | ||
194 | # if @GNULIB_CONNECT@ | |
195 | # if @HAVE_WINSOCK2_H@ | |
196 | # undef connect | |
197 | # define connect rpl_connect | |
198 | extern int rpl_connect (int, struct sockaddr *, int); | |
199 | # endif | |
200 | # elif @HAVE_WINSOCK2_H@ | |
201 | # undef connect | |
202 | # define connect socket_used_without_requesting_gnulib_module_connect | |
203 | # elif defined GNULIB_POSIXCHECK | |
204 | # undef connect | |
205 | # define connect(s,a,l) \ | |
206 | (GL_LINK_WARNING ("connect is not always POSIX compliant - " \ | |
207 | "use gnulib module connect for portability"), \ | |
208 | connect (s, a, l)) | |
209 | # endif | |
210 | ||
211 | # if @GNULIB_ACCEPT@ | |
212 | # if @HAVE_WINSOCK2_H@ | |
213 | # undef accept | |
214 | # define accept rpl_accept | |
215 | extern int rpl_accept (int, struct sockaddr *, int *); | |
216 | # endif | |
217 | # elif @HAVE_WINSOCK2_H@ | |
218 | # undef accept | |
219 | # define accept accept_used_without_requesting_gnulib_module_accept | |
220 | # elif defined GNULIB_POSIXCHECK | |
221 | # undef accept | |
222 | # define accept(s,a,l) \ | |
223 | (GL_LINK_WARNING ("accept is not always POSIX compliant - " \ | |
224 | "use gnulib module accept for portability"), \ | |
225 | accept (s, a, l)) | |
226 | # endif | |
227 | ||
228 | # if @GNULIB_BIND@ | |
229 | # if @HAVE_WINSOCK2_H@ | |
230 | # undef bind | |
231 | # define bind rpl_bind | |
232 | extern int rpl_bind (int, struct sockaddr *, int); | |
233 | # endif | |
234 | # elif @HAVE_WINSOCK2_H@ | |
235 | # undef bind | |
236 | # define bind bind_used_without_requesting_gnulib_module_bind | |
237 | # elif defined GNULIB_POSIXCHECK | |
238 | # undef bind | |
239 | # define bind(s,a,l) \ | |
240 | (GL_LINK_WARNING ("bind is not always POSIX compliant - " \ | |
241 | "use gnulib module bind for portability"), \ | |
242 | bind (s, a, l)) | |
243 | # endif | |
244 | ||
245 | # if @GNULIB_GETPEERNAME@ | |
246 | # if @HAVE_WINSOCK2_H@ | |
247 | # undef getpeername | |
248 | # define getpeername rpl_getpeername | |
249 | extern int rpl_getpeername (int, struct sockaddr *, int *); | |
250 | # endif | |
251 | # elif @HAVE_WINSOCK2_H@ | |
252 | # undef getpeername | |
253 | # define getpeername getpeername_used_without_requesting_gnulib_module_getpeername | |
254 | # elif defined GNULIB_POSIXCHECK | |
255 | # undef getpeername | |
256 | # define getpeername(s,a,l) \ | |
257 | (GL_LINK_WARNING ("getpeername is not always POSIX compliant - " \ | |
258 | "use gnulib module getpeername for portability"), \ | |
259 | getpeername (s, a, l)) | |
260 | # endif | |
261 | ||
262 | # if @GNULIB_GETSOCKNAME@ | |
263 | # if @HAVE_WINSOCK2_H@ | |
264 | # undef getsockname | |
265 | # define getsockname rpl_getsockname | |
266 | extern int rpl_getsockname (int, struct sockaddr *, int *); | |
267 | # endif | |
268 | # elif @HAVE_WINSOCK2_H@ | |
269 | # undef getsockname | |
270 | # define getsockname getsockname_used_without_requesting_gnulib_module_getsockname | |
271 | # elif defined GNULIB_POSIXCHECK | |
272 | # undef getsockname | |
273 | # define getsockname(s,a,l) \ | |
274 | (GL_LINK_WARNING ("getsockname is not always POSIX compliant - " \ | |
275 | "use gnulib module getsockname for portability"), \ | |
276 | getsockname (s, a, l)) | |
277 | # endif | |
278 | ||
279 | # if @GNULIB_GETSOCKOPT@ | |
280 | # if @HAVE_WINSOCK2_H@ | |
281 | # undef getsockopt | |
282 | # define getsockopt rpl_getsockopt | |
283 | extern int rpl_getsockopt (int, int, int, void *, socklen_t *); | |
284 | # endif | |
285 | # elif @HAVE_WINSOCK2_H@ | |
286 | # undef getsockopt | |
287 | # define getsockopt getsockopt_used_without_requesting_gnulib_module_getsockopt | |
288 | # elif defined GNULIB_POSIXCHECK | |
289 | # undef getsockopt | |
290 | # define getsockopt(s,lvl,o,v,l) \ | |
291 | (GL_LINK_WARNING ("getsockopt is not always POSIX compliant - " \ | |
292 | "use gnulib module getsockopt for portability"), \ | |
293 | getsockopt (s, lvl, o, v, l)) | |
294 | # endif | |
295 | ||
296 | # if @GNULIB_LISTEN@ | |
297 | # if @HAVE_WINSOCK2_H@ | |
298 | # undef listen | |
299 | # define listen rpl_listen | |
300 | extern int rpl_listen (int, int); | |
301 | # endif | |
302 | # elif @HAVE_WINSOCK2_H@ | |
303 | # undef listen | |
304 | # define listen listen_used_without_requesting_gnulib_module_listen | |
305 | # elif defined GNULIB_POSIXCHECK | |
306 | # undef listen | |
307 | # define listen(s,b) \ | |
308 | (GL_LINK_WARNING ("listen is not always POSIX compliant - " \ | |
309 | "use gnulib module listen for portability"), \ | |
310 | listen (s, b)) | |
311 | # endif | |
312 | ||
313 | # if @GNULIB_RECV@ | |
314 | # if @HAVE_WINSOCK2_H@ | |
315 | # undef recv | |
316 | # define recv rpl_recv | |
317 | extern int rpl_recv (int, void *, int, int); | |
318 | # endif | |
319 | # elif @HAVE_WINSOCK2_H@ | |
320 | # undef recv | |
321 | # define recv recv_used_without_requesting_gnulib_module_recv | |
322 | # elif defined GNULIB_POSIXCHECK | |
323 | # undef recv | |
324 | # define recv(s,b,n,f) \ | |
325 | (GL_LINK_WARNING ("recv is not always POSIX compliant - " \ | |
326 | "use gnulib module recv for portability"), \ | |
327 | recv (s, b, n, f)) | |
328 | # endif | |
329 | ||
330 | # if @GNULIB_SEND@ | |
331 | # if @HAVE_WINSOCK2_H@ | |
332 | # undef send | |
333 | # define send rpl_send | |
334 | extern int rpl_send (int, const void *, int, int); | |
335 | # endif | |
336 | # elif @HAVE_WINSOCK2_H@ | |
337 | # undef send | |
338 | # define send send_used_without_requesting_gnulib_module_send | |
339 | # elif defined GNULIB_POSIXCHECK | |
340 | # undef send | |
341 | # define send(s,b,n,f) \ | |
342 | (GL_LINK_WARNING ("send is not always POSIX compliant - " \ | |
343 | "use gnulib module send for portability"), \ | |
344 | send (s, b, n, f)) | |
345 | # endif | |
346 | ||
347 | # if @GNULIB_RECVFROM@ | |
348 | # if @HAVE_WINSOCK2_H@ | |
349 | # undef recvfrom | |
350 | # define recvfrom rpl_recvfrom | |
351 | extern int rpl_recvfrom (int, void *, int, int, struct sockaddr *, int *); | |
352 | # endif | |
353 | # elif @HAVE_WINSOCK2_H@ | |
354 | # undef recvfrom | |
355 | # define recvfrom recvfrom_used_without_requesting_gnulib_module_recvfrom | |
356 | # elif defined GNULIB_POSIXCHECK | |
357 | # undef recvfrom | |
358 | # define recvfrom(s,b,n,f,a,l) \ | |
359 | (GL_LINK_WARNING ("recvfrom is not always POSIX compliant - " \ | |
360 | "use gnulib module recvfrom for portability"), \ | |
361 | recvfrom (s, b, n, f, a, l)) | |
362 | # endif | |
363 | ||
364 | # if @GNULIB_SENDTO@ | |
365 | # if @HAVE_WINSOCK2_H@ | |
366 | # undef sendto | |
367 | # define sendto rpl_sendto | |
368 | extern int rpl_sendto (int, const void *, int, int, struct sockaddr *, int); | |
369 | # endif | |
370 | # elif @HAVE_WINSOCK2_H@ | |
371 | # undef sendto | |
372 | # define sendto sendto_used_without_requesting_gnulib_module_sendto | |
373 | # elif defined GNULIB_POSIXCHECK | |
374 | # undef sendto | |
375 | # define sendto(s,b,n,f,a,l) \ | |
376 | (GL_LINK_WARNING ("sendto is not always POSIX compliant - " \ | |
377 | "use gnulib module sendto for portability"), \ | |
378 | sendto (s, b, n, f, a, l)) | |
379 | # endif | |
380 | ||
381 | # if @GNULIB_SETSOCKOPT@ | |
382 | # if @HAVE_WINSOCK2_H@ | |
383 | # undef setsockopt | |
384 | # define setsockopt rpl_setsockopt | |
385 | extern int rpl_setsockopt (int, int, int, const void *, socklen_t); | |
386 | # endif | |
387 | # elif @HAVE_WINSOCK2_H@ | |
388 | # undef setsockopt | |
389 | # define setsockopt setsockopt_used_without_requesting_gnulib_module_setsockopt | |
390 | # elif defined GNULIB_POSIXCHECK | |
391 | # undef setsockopt | |
392 | # define setsockopt(s,lvl,o,v,l) \ | |
393 | (GL_LINK_WARNING ("setsockopt is not always POSIX compliant - " \ | |
394 | "use gnulib module setsockopt for portability"), \ | |
395 | setsockopt (s, lvl, o, v, l)) | |
396 | # endif | |
397 | ||
398 | # if @GNULIB_SHUTDOWN@ | |
399 | # if @HAVE_WINSOCK2_H@ | |
400 | # undef shutdown | |
401 | # define shutdown rpl_shutdown | |
402 | extern int rpl_shutdown (int, int); | |
403 | # endif | |
404 | # elif @HAVE_WINSOCK2_H@ | |
405 | # undef shutdown | |
406 | # define shutdown shutdown_used_without_requesting_gnulib_module_shutdown | |
407 | # elif defined GNULIB_POSIXCHECK | |
408 | # undef shutdown | |
409 | # define shutdown(s,h) \ | |
410 | (GL_LINK_WARNING ("shutdown is not always POSIX compliant - " \ | |
411 | "use gnulib module shutdown for portability"), \ | |
412 | shutdown (s, h)) | |
413 | # endif | |
414 | ||
415 | # if @HAVE_WINSOCK2_H@ | |
416 | # undef select | |
417 | # define select select_used_without_including_sys_select_h | |
418 | # endif | |
419 | ||
420 | # ifdef __cplusplus | |
421 | } | |
422 | # endif | |
423 | ||
424 | #endif /* HAVE_SYS_SOCKET_H */ | |
425 | ||
426 | #ifdef __cplusplus | |
427 | extern "C" { | |
428 | #endif | |
429 | ||
430 | #if @GNULIB_ACCEPT4@ | |
431 | /* Accept a connection on a socket, with specific opening flags. | |
432 | The flags are a bitmask, possibly including O_CLOEXEC (defined in <fcntl.h>) | |
433 | and O_TEXT, O_BINARY (defined in "binary-io.h"). | |
434 | See also the Linux man page at | |
435 | <http://www.kernel.org/doc/man-pages/online/pages/man2/accept4.2.html>. */ | |
436 | # if @HAVE_ACCEPT4@ | |
437 | # define accept4 rpl_accept4 | |
438 | # endif | |
439 | extern int accept4 (int sockfd, struct sockaddr *addr, socklen_t *addrlen, | |
440 | int flags); | |
441 | #elif defined GNULIB_POSIXCHECK | |
442 | # undef accept4 | |
443 | # define accept4(s,a,l,f) \ | |
444 | (GL_LINK_WARNING ("accept4 is unportable - " \ | |
445 | "use gnulib module accept4 for portability"), \ | |
446 | accept4 (s, a, l, f)) | |
447 | #endif | |
448 | ||
449 | #ifdef __cplusplus | |
450 | } | |
451 | #endif | |
452 | ||
453 | #endif /* _GL_SYS_SOCKET_H */ | |
454 | #endif /* _GL_SYS_SOCKET_H */ |