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author | Simon Josefsson <simon@josefsson.org> | 2009-04-21 13:27:38 +0200 |
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committer | Simon Josefsson <simon@josefsson.org> | 2009-04-21 13:27:38 +0200 |
commit | 36bce285c528255a9c948552ebeb4f1d3759336b (patch) | |
tree | faa379db8c640eadf76428e23005afcb3777dec1 /gl/sockets.c | |
parent | 3c65348da9fdcaa75d7f902a833d98b95a71862f (diff) | |
download | gnutls-36bce285c528255a9c948552ebeb4f1d3759336b.tar.gz |
Need sockets module.
Diffstat (limited to 'gl/sockets.c')
-rw-r--r-- | gl/sockets.c | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/gl/sockets.c b/gl/sockets.c new file mode 100644 index 0000000000..9d5c547928 --- /dev/null +++ b/gl/sockets.c @@ -0,0 +1,108 @@ +/* sockets.c --- wrappers for Windows socket functions + + Copyright (C) 2008-2009 Free Software Foundation, Inc. + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. */ + +/* Written by Simon Josefsson */ + +#include <config.h> + +/* Specification. */ +#include "sockets.h" + +#if WINDOWS_SOCKETS + +/* This includes winsock2.h on MinGW. */ +#include <sys/socket.h> + +#include "close-hook.h" + +/* Get set_winsock_errno, FD_TO_SOCKET etc. */ +#include "w32sock.h" + +static int +close_fd_maybe_socket (int fd, const struct close_hook *remaining_list) +{ + SOCKET sock; + WSANETWORKEVENTS ev; + + /* Test whether fd refers to a socket. */ + sock = FD_TO_SOCKET (fd); + ev.lNetworkEvents = 0xDEADBEEF; + WSAEnumNetworkEvents (sock, NULL, &ev); + if (ev.lNetworkEvents != 0xDEADBEEF) + { + /* fd refers to a socket. */ + /* FIXME: other applications, like squid, use an undocumented + _free_osfhnd free function. But this is not enough: The 'osfile' + flags for fd also needs to be cleared, but it is hard to access it. + Instead, here we just close twice the file descriptor. */ + if (closesocket (sock)) + { + set_winsock_errno (); + return -1; + } + else + { + /* This call frees the file descriptor and does a + CloseHandle ((HANDLE) _get_osfhandle (fd)), which fails. */ + _close (fd); + return 0; + } + } + else + /* Some other type of file descriptor. */ + return execute_close_hooks (fd, remaining_list); +} + +static struct close_hook close_sockets_hook; + +#endif + +int +gl_sockets_startup (int version) +{ +#if WINDOWS_SOCKETS + WSADATA data; + int err; + + err = WSAStartup (version, &data); + if (err != 0) + return 1; + + if (data.wVersion < version) + return 2; + + register_close_hook (close_fd_maybe_socket, &close_sockets_hook); +#endif + + return 0; +} + +int +gl_sockets_cleanup (void) +{ +#if WINDOWS_SOCKETS + int err; + + unregister_close_hook (&close_sockets_hook); + + err = WSACleanup (); + if (err != 0) + return 1; +#endif + + return 0; +} |