marko10_000
/
wine-wine
forked from Mirrors/wine-wine
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
wine-wine/dlls/kernel32/computername.c

279 lines
8.8 KiB
C
Raw Permalink Blame History

/*
* Win32 kernel functions
*
* Copyright 1995 Martin von Loewis and Cameron Heide
* Copyright 1999 Peter Ganten
* Copyright 2002 Martin Wilck
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include "wine/port.h"
#include <stdarg.h>
#include <string.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <stdlib.h>
#include <errno.h>
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "windef.h"
#include "winbase.h"
#include "winerror.h"
#include "winnls.h"
#include "winternl.h"
#include "wine/unicode.h"
#include "wine/exception.h"
#include "wine/debug.h"
#include "kernel_private.h"
WINE_DEFAULT_DEBUG_CHANNEL(computername);
/* Registry key and value names */
static const WCHAR ComputerW[] = {'\\','R','e','g','i','s','t','r','y','\\',
'M','a','c','h','i','n','e','\\',
'S','y','s','t','e','m','\\',
'C','u','r','r','e','n','t','C','o','n','t','r','o','l','S','e','t','\\',
'C','o','n','t','r','o','l','\\',
'C','o','m','p','u','t','e','r','N','a','m','e',0};
static const WCHAR ActiveComputerNameW[] = {'A','c','t','i','v','e','C','o','m','p','u','t','e','r','N','a','m','e',0};
static const WCHAR ComputerNameW[] = {'C','o','m','p','u','t','e','r','N','a','m','e',0};
static const WCHAR default_ComputerName[] = {'W','I','N','E',0};
/***********************************************************************
* dns_gethostbyname (INTERNAL)
*
* From hostname(1):
* "The FQDN is the name gethostbyname(2) returns for the host name returned by gethostname(2)."
*
* Wine can use this technique only if the thread-safe gethostbyname_r is available.
*/
static void dns_gethostbyname ( char *name, int size )
{
#ifdef HAVE_LINUX_GETHOSTBYNAME_R_6
struct hostent* host = NULL;
char *extrabuf;
int ebufsize = 1024;
struct hostent hostentry;
int locerr = ENOBUFS, res;
for (;;)
{
if (!(extrabuf = HeapAlloc( GetProcessHeap(), 0, ebufsize ))) return;
res = gethostbyname_r ( name, &hostentry, extrabuf, ebufsize, &host, &locerr );
if( res != ERANGE ) break;
ebufsize *= 2;
HeapFree( GetProcessHeap(), 0, extrabuf );
}
if ( res )
WARN ("Error in gethostbyname_r %d (%d)\n", res, locerr);
else if ( !host )
WARN ("gethostbyname_r returned NULL host, locerr = %d\n", locerr);
else
if (strlen( host->h_name ) < size) strcpy( name, host->h_name );
HeapFree( GetProcessHeap(), 0, extrabuf );
#endif
}
/***********************************************************************
* dns_fqdn (INTERNAL)
*/
static BOOL dns_fqdn ( char *name, int size )
{
if (gethostname( name, size ))
{
switch( errno )
{
case ENAMETOOLONG:
SetLastError ( ERROR_MORE_DATA );
break;
default:
SetLastError ( ERROR_INVALID_PARAMETER );
break;
}
return FALSE;
}
dns_gethostbyname( name, size );
return TRUE;
}
/***********************************************************************
* COMPUTERNAME_Init (INTERNAL)
*/
void COMPUTERNAME_Init (void)
{
HANDLE hkey = INVALID_HANDLE_VALUE, hsubkey = INVALID_HANDLE_VALUE;
OBJECT_ATTRIBUTES attr;
UNICODE_STRING nameW;
char buf[offsetof( KEY_VALUE_PARTIAL_INFORMATION, Data ) + (MAX_COMPUTERNAME_LENGTH + 1) * sizeof( WCHAR )];
DWORD len = sizeof( buf );
const WCHAR *computer_name = (WCHAR *)(buf + offsetof( KEY_VALUE_PARTIAL_INFORMATION, Data ));
NTSTATUS st = STATUS_INTERNAL_ERROR;
char hbuf[256];
WCHAR *dot, bufW[256];
if (dns_fqdn( hbuf, sizeof(hbuf) ))
{
MultiByteToWideChar( CP_UNIXCP, 0, hbuf, -1, bufW, ARRAY_SIZE(bufW) );
dot = strchrW( bufW, '.' );
if (dot) *dot++ = 0;
else dot = bufW + strlenW(bufW);
SetComputerNameExW( ComputerNamePhysicalDnsDomain, dot );
SetComputerNameExW( ComputerNamePhysicalDnsHostname, bufW );
}
TRACE("(void)\n");
InitializeObjectAttributes( &attr, &nameW, 0, 0, NULL );
RtlInitUnicodeString( &nameW, ComputerW );
if ( ( st = NtCreateKey( &hkey, KEY_ALL_ACCESS, &attr, 0, NULL, 0, NULL ) ) != STATUS_SUCCESS )
goto out;
attr.RootDirectory = hkey;
RtlInitUnicodeString( &nameW, ComputerNameW );
if ( (st = NtCreateKey( &hsubkey, KEY_ALL_ACCESS, &attr, 0, NULL, 0, NULL ) ) != STATUS_SUCCESS )
goto out;
st = NtQueryValueKey( hsubkey, &nameW, KeyValuePartialInformation, buf, len, &len );
if ( st != STATUS_SUCCESS)
{
computer_name = default_ComputerName;
len = sizeof(default_ComputerName);
}
else
{
len = (len - offsetof( KEY_VALUE_PARTIAL_INFORMATION, Data ));
}
NtClose( hsubkey );
TRACE(" ComputerName: %s (%u)\n", debugstr_w (computer_name), len);
RtlInitUnicodeString( &nameW, ActiveComputerNameW );
if ( ( st = NtCreateKey( &hsubkey, KEY_ALL_ACCESS, &attr, 0, NULL, REG_OPTION_VOLATILE, NULL ) )
!= STATUS_SUCCESS )
goto out;
RtlInitUnicodeString( &nameW, ComputerNameW );
st = NtSetValueKey( hsubkey, &nameW, 0, REG_SZ, computer_name, len );
out:
NtClose( hsubkey );
NtClose( hkey );
if ( st == STATUS_SUCCESS )
TRACE( "success\n" );
else
{
WARN( "status trying to set ComputerName: %x\n", st );
SetLastError ( RtlNtStatusToDosError ( st ) );
}
}
/***********************************************************************
* GetComputerNameW (KERNEL32.@)
*/
BOOL WINAPI GetComputerNameW(LPWSTR name,LPDWORD size)
{
BOOL ret = GetComputerNameExW( ComputerNameNetBIOS, name, size );
if (!ret && GetLastError() == ERROR_MORE_DATA) SetLastError( ERROR_BUFFER_OVERFLOW );
return ret;
}
/***********************************************************************
* GetComputerNameA (KERNEL32.@)
*/
BOOL WINAPI GetComputerNameA(LPSTR name, LPDWORD size)
{
WCHAR nameW[ MAX_COMPUTERNAME_LENGTH + 1 ];
DWORD sizeW = MAX_COMPUTERNAME_LENGTH + 1;
unsigned int len;
BOOL ret;
if ( !GetComputerNameW (nameW, &sizeW) ) return FALSE;
len = WideCharToMultiByte ( CP_ACP, 0, nameW, -1, NULL, 0, NULL, 0 );
/* for compatibility with Win9x */
__TRY
{
if ( *size < len )
{
*size = len;
SetLastError( ERROR_BUFFER_OVERFLOW );
ret = FALSE;
}
else
{
WideCharToMultiByte ( CP_ACP, 0, nameW, -1, name, len, NULL, 0 );
*size = len - 1;
ret = TRUE;
}
}
__EXCEPT_PAGE_FAULT
{
SetLastError( ERROR_INVALID_PARAMETER );
ret = FALSE;
}
__ENDTRY
return ret;
}
/***********************************************************************
* DnsHostnameToComputerNameA (KERNEL32.@)
*/
BOOL WINAPI DnsHostnameToComputerNameA(LPCSTR hostname,
LPSTR computername, LPDWORD size)
{
WCHAR *hostW, nameW[MAX_COMPUTERNAME_LENGTH + 1];
DWORD len;
BOOL ret;
if (!hostname || !size) return FALSE;
len = MultiByteToWideChar( CP_ACP, 0, hostname, -1, NULL, 0 );
if (!(hostW = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) ))) return FALSE;
MultiByteToWideChar( CP_ACP, 0, hostname, -1, hostW, len );
len = ARRAY_SIZE(nameW);
if ((ret = DnsHostnameToComputerNameW( hostW, nameW, &len )))
{
if (!computername || !WideCharToMultiByte( CP_ACP, 0, nameW, -1, computername, *size, NULL, NULL ))
*size = WideCharToMultiByte( CP_ACP, 0, nameW, -1, NULL, 0, NULL, NULL );
else
*size = strlen(computername);
}
HeapFree( GetProcessHeap(), 0, hostW );
return TRUE;
}
/***********************************************************************
* DnsHostnameToComputerNameW (KERNEL32.@)
*/
BOOL WINAPI DnsHostnameToComputerNameW(LPCWSTR hostname,
LPWSTR computername, LPDWORD size)
{
return DnsHostnameToComputerNameExW( hostname, computername, size );
}
Reference in New Issue View Git Blame Copy Permalink