diff options
Diffstat (limited to 'lib/gethostname.c')
| -rw-r--r-- | lib/gethostname.c | 68 |
1 files changed, 60 insertions, 8 deletions
diff --git a/lib/gethostname.c b/lib/gethostname.c index eedc40e..c4b64a2 100644 --- a/lib/gethostname.c +++ b/lib/gethostname.c @@ -1,11 +1,11 @@ /* gethostname emulation for SysV and POSIX.1. - Copyright (C) 1992, 2003, 2006 Free Software Foundation, Inc. + Copyright (C) 1992, 2003, 2006, 2008-2016 Free Software Foundation, Inc. - This program is free software; you can redistribute it and/or modify + 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 2, or (at your option) - any later version. + 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 @@ -13,17 +13,25 @@ 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, write to the Free Software Foundation, - Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ + along with this program. If not, see <http://www.gnu.org/licenses/>. */ -/* David MacKenzie <djm@gnu.ai.mit.edu> */ +/* David MacKenzie <djm@gnu.ai.mit.edu> + Windows port by Simon Josefsson <simon@josefsson.org> */ #include <config.h> +#if !((defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__) +/* Unix API. */ + +/* Specification. */ +#include <unistd.h> + #ifdef HAVE_UNAME # include <sys/utsname.h> #endif +#include <string.h> + /* Put up to LEN chars of the host name into NAME. Null terminate it if the name is shorter than LEN. Return 0 if ok, -1 if error. */ @@ -46,7 +54,51 @@ gethostname (char *name, size_t len) } strncpy (name, uts.nodename, len); #else - strcpy (name, ""); /* Hardcode your system name if you want. */ + strcpy (name, ""); /* Hardcode your system name if you want. */ #endif return 0; } + +#else +/* Native Windows API. Which primitive to choose? + - gethostname() requires linking with -lws2_32. + - GetComputerName() does not return the right kind of hostname. + - GetComputerNameEx(ComputerNameDnsHostname,...) returns the right hostname, + but it is hard to use portably: + - It requires defining _WIN32_WINNT to at least 0x0500. + - With mingw, it also requires + "#define GetComputerNameEx GetComputerNameExA". + - With older versions of mingw, none of the declarations are present at + all, not even of the enum value ComputerNameDnsHostname. + So we use gethostname(). Linking with -lws2_32 is the least evil. */ + +#define WIN32_LEAN_AND_MEAN +/* Get winsock2.h. */ +#include <unistd.h> + +/* Get INT_MAX. */ +#include <limits.h> + +/* Get set_winsock_errno. */ +#include "w32sock.h" + +#include "sockets.h" + +#undef gethostname + +int +rpl_gethostname (char *name, size_t len) +{ + int r; + + if (len > INT_MAX) + len = INT_MAX; + gl_sockets_startup (SOCKETS_1_1); + r = gethostname (name, (int) len); + if (r < 0) + set_winsock_errno (); + + return r; +} + +#endif |