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2 years ago
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi
Copyright 2020 Justine Alexandra Roberts Tunney
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; version 2 of the License.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
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
#include "libc/calls/calls.h"
#include "libc/calls/internal.h"
#include "libc/calls/struct/utsname.h"
#include "libc/dce.h"
#include "libc/macros.h"
#include "libc/nt/enum/computernameformat.h"
#include "libc/nt/errors.h"
#include "libc/nt/runtime.h"
#include "libc/nt/systeminfo.h"
#include "libc/str/str.h"
#include "libc/sysv/errfuns.h"
2 years ago
int getdomainname(char *name, size_t len) {
uint32_t nSize;
char16_t name16[256];
struct utsname u;
if (len < 1) return einval();
if (!name) return efault();
if (!IsWindows()) {
if (uname(&u) == -1) return -1;
if (!memccpy(name, u.domainname[0] ? u.domainname : u.nodename, '\0',
len)) {
name[len - 1] = '\0';
return 0;
} else {
nSize = ARRAYLEN(name16);
if (!GetComputerNameEx(kNtComputerNameDnsFullyQualified, name16, &nSize)) {
return winerr();
tprecode16to8(name, MIN(MIN(ARRAYLEN(name16), nSize + 1), len), name16);
return 0;
2 years ago