mirror of
https://github.com/reactos/reactos.git
synced 2024-06-30 18:01:07 +00:00
78 lines
2.3 KiB
C
78 lines
2.3 KiB
C
/*
|
|
* PROJECT: ReactOS Hostname Command
|
|
* LICENSE: LGPL-2.1+ (https://spdx.org/licenses/LGPL-2.1+)
|
|
* PURPOSE: Retrieves the current DNS host name of the computer.
|
|
* COPYRIGHT: Copyright 2005-2019 Emanuele Aliberti (ea@reactos.com)
|
|
* Copyright 2019 Hermes Belusca-Maito
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include <conio.h>
|
|
|
|
#include <windef.h>
|
|
#include <winbase.h>
|
|
#include <winuser.h>
|
|
|
|
#include "resource.h"
|
|
|
|
int wmain(int argc, WCHAR* argv[])
|
|
{
|
|
WCHAR Msg[100];
|
|
|
|
if (argc == 1)
|
|
{
|
|
BOOL bSuccess;
|
|
WCHAR LocalHostName[256] = L""; // MAX_COMPUTERNAME_LENGTH + 1 for NetBIOS name.
|
|
DWORD HostNameSize = _countof(LocalHostName);
|
|
PWSTR HostName = LocalHostName;
|
|
|
|
/* Try to retrieve the host name using the local buffer */
|
|
bSuccess = GetComputerNameExW(ComputerNameDnsHostname, HostName, &HostNameSize);
|
|
if (!bSuccess && (GetLastError() == ERROR_MORE_DATA))
|
|
{
|
|
/* Retry with a larger buffer since the local buffer was too small */
|
|
HostName = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, HostNameSize * sizeof(WCHAR));
|
|
if (HostName)
|
|
bSuccess = GetComputerNameExW(ComputerNameDnsHostname, HostName, &HostNameSize);
|
|
}
|
|
|
|
if (bSuccess)
|
|
{
|
|
/* Print out the host name */
|
|
_cwprintf(L"%s\n", HostName);
|
|
}
|
|
|
|
/* If a larger buffer has been allocated, free it */
|
|
if (HostName && (HostName != LocalHostName))
|
|
HeapFree(GetProcessHeap(), 0, HostName);
|
|
|
|
if (!bSuccess)
|
|
{
|
|
/* Fail in case of error */
|
|
LoadStringW(GetModuleHandle(NULL), IDS_ERROR, Msg, _countof(Msg));
|
|
_cwprintf(L"%s %lu.\n", Msg, GetLastError());
|
|
return 1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if ((wcsicmp(argv[1], L"-s") == 0) || (wcsicmp(argv[1], L"/s") == 0))
|
|
{
|
|
/* The program doesn't allow the user to set the host name */
|
|
LoadStringW(GetModuleHandle(NULL), IDS_NOSET, Msg, _countof(Msg));
|
|
_cwprintf(L"%s\n", Msg);
|
|
return 1;
|
|
}
|
|
else
|
|
{
|
|
/* Let the user know what the program does */
|
|
LoadStringW(GetModuleHandle(NULL), IDS_USAGE, Msg, _countof(Msg));
|
|
_cwprintf(L"\n%s\n\n", Msg);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* EOF */
|