dlls/advapi32/advapi.c

   1 /*
   2  * Win32 advapi functions
   3  *
   4  * Copyright 1995 Sven Verdoolaege
   5  */
   6
   7 #include <errno.h>
   8 #include <stdio.h>
   9 #include <unistd.h>
  10 #include <string.h>
  11 #include <pwd.h>
  12
  13 #include "winbase.h"
  14 #include "windef.h"
  15 #include "winnls.h"
  16 #include "winerror.h"
  17
  18 #include "debugtools.h"
  19
  20 DEFAULT_DEBUG_CHANNEL(advapi);
  21
  22 /******************************************************************************
  23  * GetUserNameA [ADVAPI32.@]
  24  *
  25  * NOTE: lpSize returns the total length of the username, including the
  26  * terminating null character.
  27  */
  28 BOOL WINAPI
  29 GetUserNameA( LPSTR lpszName, LPDWORD lpSize )
  30 {
  31   size_t len;
  32   char *name;
  33
  34   struct passwd *pwd = getpwuid( getuid() );
  35   if (!pwd)
  36   {
  37     ERR("Username lookup failed: %s\n", strerror(errno));
  38     return 0;
  39   }
  40
  41   name = pwd->pw_name;
  42
  43   /* We need to include the null character when determining the size of the buffer. */
  44   len = strlen(name) + 1;
  45   if (len > *lpSize)
  46   {
  47     SetLastError(ERROR_MORE_DATA);
  48     *lpSize = len;
  49     return 0;
  50   }
  51
  52   *lpSize = len;
  53   strcpy(lpszName, name);
  54   return 1;
  55 }
  56
  57 /******************************************************************************
  58  * GetUserNameW [ADVAPI32.@]
  59  *
  60  * PARAMS
  61  *   lpszName []
  62  *   lpSize   []
  63  */
  64 BOOL WINAPI
  65 GetUserNameW( LPWSTR lpszName, LPDWORD lpSize )
  66 {
  67         LPSTR name = (LPSTR)HeapAlloc( GetProcessHeap(), 0, *lpSize );
  68         DWORD   size = *lpSize;
  69         BOOL res = GetUserNameA(name,lpSize);
  70
  71         /* FIXME: should set lpSize in WCHARs */
  72         if (size && !MultiByteToWideChar( CP_ACP, 0, name, -1, lpszName, size ))
  73             lpszName[size-1] = 0;
  74         HeapFree( GetProcessHeap(), 0, name );
  75         return res;
  76 }