dlls/propsys/propsys_main.c

   1 /*
   2  * propsys main
   3  *
   4  * Copyright 2008 James Hawkins
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include <stdarg.h>
  24
  25 #include "windef.h"
  26 #include "winbase.h"
  27 #include "objbase.h"
  28 #include "propsys.h"
  29 #include "wine/debug.h"
  30 #include "wine/unicode.h"
  31
  32 WINE_DEFAULT_DEBUG_CHANNEL(propsys);
  33
  34 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
  35 {
  36     TRACE("(0x%p, %d, %p)\n", hinstDLL, fdwReason, lpvReserved);
  37
  38     switch (fdwReason)
  39     {
  40         case DLL_WINE_PREATTACH:
  41             return FALSE;    /* prefer native version */
  42         case DLL_PROCESS_ATTACH:
  43             DisableThreadLibraryCalls(hinstDLL);
  44             break;
  45         case DLL_PROCESS_DETACH:
  46             break;
  47         default:
  48             break;
  49     }
  50
  51     return TRUE;
  52 }
  53
  54 HRESULT WINAPI PSRegisterPropertySchema(PCWSTR path)
  55 {
  56     FIXME("%s stub\n", debugstr_w(path));
  57
  58     return S_OK;
  59 }
  60
  61 HRESULT WINAPI PSUnregisterPropertySchema(PCWSTR path)
  62 {
  63     FIXME("%s stub\n", debugstr_w(path));
  64
  65     return E_NOTIMPL;
  66 }
  67
  68 HRESULT WINAPI PSStringFromPropertyKey(REFPROPERTYKEY pkey, LPWSTR psz, UINT cch)
  69 {
  70     static const WCHAR guid_fmtW[] = {'{','%','0','8','X','-','%','0','4','X','-',
  71                                       '%','0','4','X','-','%','0','2','X','%','0','2','X','-',
  72                                       '%','0','2','X','%','0','2','X','%','0','2','X',
  73                                       '%','0','2','X','%','0','2','X','%','0','2','X','}',0};
  74     static const WCHAR pid_fmtW[] = {'%','u',0};
  75
  76     WCHAR pidW[PKEY_PIDSTR_MAX + 1];
  77     LPWSTR p = psz;
  78     int len;
  79
  80     TRACE("(%p, %p, %u)\n", pkey, psz, cch);
  81
  82     if (!psz)
  83         return E_POINTER;
  84
  85     /* GUIDSTRING_MAX accounts for null terminator, +1 for space character. */
  86     if (cch <= GUIDSTRING_MAX + 1)
  87         return HRESULT_FROM_WIN32(ERROR_INSUFFICIENT_BUFFER);
  88
  89     if (!pkey)
  90     {
  91         psz[0] = '\0';
  92         return HRESULT_FROM_WIN32(ERROR_INSUFFICIENT_BUFFER);
  93     }
  94
  95     sprintfW(psz, guid_fmtW, pkey->fmtid.Data1, pkey->fmtid.Data2,
  96              pkey->fmtid.Data3, pkey->fmtid.Data4[0], pkey->fmtid.Data4[1],
  97              pkey->fmtid.Data4[2], pkey->fmtid.Data4[3], pkey->fmtid.Data4[4],
  98              pkey->fmtid.Data4[5], pkey->fmtid.Data4[6], pkey->fmtid.Data4[7]);
  99
 100     /* Overwrite the null terminator with the space character. */
 101     p += GUIDSTRING_MAX - 1;
 102     *p++ = ' ';
 103     cch -= GUIDSTRING_MAX - 1 + 1;
 104
 105     len = sprintfW(pidW, pid_fmtW, pkey->pid);
 106
 107     if (cch >= len + 1)
 108     {
 109         strcpyW(p, pidW);
 110         return S_OK;
 111     }
 112     else
 113     {
 114         WCHAR *ptr = pidW + len - 1;
 115
 116         psz[0] = '\0';
 117         *p++ = '\0';
 118         cch--;
 119
 120         /* Replicate a quirk of the native implementation where the contents
 121          * of the property ID string are written backwards to the output
 122          * buffer, skipping the rightmost digit. */
 123         if (cch)
 124         {
 125             ptr--;
 126             while (cch--)
 127                 *p++ = *ptr--;
 128         }
 129
 130         return HRESULT_FROM_WIN32(ERROR_INSUFFICIENT_BUFFER);
 131     }
 132 }