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