| 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 */ |