[hbelusca] 71695: [SUBST] - Update the resource program description. - Convert to full UNICODE. - Use Win32 functions where possible. - Factor-out the usage of QueryDosDevice into a QuerySubstedDri...

Author: hbelusca
Date: Wed Jun 29 00:38:51 2016
New Revision: 71695

URL: http://svn.reactos.org/svn/reactos?rev=71695&view=rev
Log:
[SUBST]
- Update the resource program description.
- Convert to full UNICODE.
- Use Win32 functions where possible.
- Factor-out the usage of QueryDosDevice into a QuerySubstedDrive function, that returns
error codes according to whether the specified drive is a mapped (substed) drive, or is
just an existing drive that is not a mapping, or if the drive does not exist. This allows
us to detect attempts to use a drive letter that is not a mapped drive, to define a new
mapping, and if so we reject such attempt.
This fixes CORE-10681 #resolve #comment Fixed with another patch according to my last
remark.

Modified:
    trunk/reactos/base/system/subst/lang/bg-BG.rc
    trunk/reactos/base/system/subst/lang/de-DE.rc
    trunk/reactos/base/system/subst/lang/en-US.rc
    trunk/reactos/base/system/subst/lang/es-ES.rc
    trunk/reactos/base/system/subst/lang/fr-FR.rc
    trunk/reactos/base/system/subst/lang/it-IT.rc
    trunk/reactos/base/system/subst/lang/pl-PL.rc
    trunk/reactos/base/system/subst/lang/ro-RO.rc
    trunk/reactos/base/system/subst/lang/ru-RU.rc
    trunk/reactos/base/system/subst/lang/sq-AL.rc
    trunk/reactos/base/system/subst/lang/tr-TR.rc
    trunk/reactos/base/system/subst/lang/uk-UA.rc
    trunk/reactos/base/system/subst/lang/zh-CN.rc
    trunk/reactos/base/system/subst/lang/zh-TW.rc
    trunk/reactos/base/system/subst/resource.h
    trunk/reactos/base/system/subst/subst.c
    trunk/reactos/base/system/subst/subst.rc

Modified: trunk/reactos/base/system/subst/lang/bg-BG.rc
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/base/system/subst/lang/bg-…
==============================================================================
--- trunk/reactos/base/system/subst/lang/bg-BG.rc	[iso-8859-1] (original)
+++ trunk/reactos/base/system/subst/lang/bg-BG.rc	[iso-8859-1] Wed Jun 29 00:38:51 2016
@@ -6,6 +6,7 @@
     IDS_INVALID_PARAMETER "Неправилен брой ключове -
%s\n"
     IDS_INVALID_PARAMETER2 "Недопустим ключ - %s\n"
     IDS_PATH_NOT_FOUND "Path not found - %s\n"
+    IDS_ACCESS_DENIED "Access denied - %s\n"
     IDS_DRIVE_ALREADY_SUBSTED "Устройството вече е
подложено на SUBST\n"
     IDS_FAILED_WITH_ERRORCODE "Грешка номер: 0x%x: %s\n"
     IDS_USAGE "Обвързва път с име на устройство
(дял).\n\n\

Modified: trunk/reactos/base/system/subst/lang/de-DE.rc
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/base/system/subst/lang/de-…
==============================================================================
--- trunk/reactos/base/system/subst/lang/de-DE.rc	[iso-8859-1] (original)
+++ trunk/reactos/base/system/subst/lang/de-DE.rc	[iso-8859-1] Wed Jun 29 00:38:51 2016
@@ -6,6 +6,7 @@
     IDS_INVALID_PARAMETER "Falsche Anzahl an Parametern - %s\n"
     IDS_INVALID_PARAMETER2 "Falscher Parameter - %s\n"
     IDS_PATH_NOT_FOUND "Path not found - %s\n"
+    IDS_ACCESS_DENIED "Access denied - %s\n"
     IDS_DRIVE_ALREADY_SUBSTED "SUBST wurde hier schon ausgeführt.\n"
     IDS_FAILED_WITH_ERRORCODE "Fehlgeschlagen - Code 0x%x: %s\n"
     IDS_USAGE "Weist einem Pfad einen Laufwerksbuchstaben zu.n\n\

Modified: trunk/reactos/base/system/subst/lang/en-US.rc
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/base/system/subst/lang/en-…
==============================================================================
--- trunk/reactos/base/system/subst/lang/en-US.rc	[iso-8859-1] (original)
+++ trunk/reactos/base/system/subst/lang/en-US.rc	[iso-8859-1] Wed Jun 29 00:38:51 2016
@@ -6,6 +6,7 @@
     IDS_INVALID_PARAMETER "Incorrect number of parameters - %s\n"
     IDS_INVALID_PARAMETER2 "Invalid parameter - %s\n"
     IDS_PATH_NOT_FOUND "Path not found - %s\n"
+    IDS_ACCESS_DENIED "Access denied - %s\n"
     IDS_DRIVE_ALREADY_SUBSTED "Drive already SUBSTed\n"
     IDS_FAILED_WITH_ERRORCODE "Failed with error code 0x%x: %s\n"
     IDS_USAGE "Associates a path with a drive letter.\n\n\

Modified: trunk/reactos/base/system/subst/lang/es-ES.rc
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/base/system/subst/lang/es-…
==============================================================================
--- trunk/reactos/base/system/subst/lang/es-ES.rc	[iso-8859-1] (original)
+++ trunk/reactos/base/system/subst/lang/es-ES.rc	[iso-8859-1] Wed Jun 29 00:38:51 2016
@@ -6,6 +6,7 @@
     IDS_INVALID_PARAMETER "Cantidad de parámetros incorrecta - %s\n"
     IDS_INVALID_PARAMETER2 "Parámetro incorrecto - %s\n"
     IDS_PATH_NOT_FOUND "Path not found - %s\n"
+    IDS_ACCESS_DENIED "Access denied - %s\n"
     IDS_DRIVE_ALREADY_SUBSTED "Unidad ya sustituida\n"
     IDS_FAILED_WITH_ERRORCODE "Falla con código de error 0x%x: %s\n"
     IDS_USAGE "Asocia una ruta con una letra de unidad.\n\n\

Modified: trunk/reactos/base/system/subst/lang/fr-FR.rc
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/base/system/subst/lang/fr-…
==============================================================================
--- trunk/reactos/base/system/subst/lang/fr-FR.rc	[iso-8859-1] (original)
+++ trunk/reactos/base/system/subst/lang/fr-FR.rc	[iso-8859-1] Wed Jun 29 00:38:51 2016
@@ -6,6 +6,7 @@
     IDS_INVALID_PARAMETER "Nombre incorrect de paramètres - %s\n"
     IDS_INVALID_PARAMETER2 "Paramètre incorrect - %s\n"
     IDS_PATH_NOT_FOUND "Chemin d'accès introuvable - %s\n"
+    IDS_ACCESS_DENIED "Accès refusé - %s\n"
     IDS_DRIVE_ALREADY_SUBSTED "Disque déjà substitué\n"
     IDS_FAILED_WITH_ERRORCODE "Échoue avec le code d'erreur 0x%x : %s\n"
     IDS_USAGE "Associe un chemin avec une lettre de lecteur.\n\n\

Modified: trunk/reactos/base/system/subst/lang/it-IT.rc
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/base/system/subst/lang/it-…
==============================================================================
--- trunk/reactos/base/system/subst/lang/it-IT.rc	[iso-8859-1] (original)
+++ trunk/reactos/base/system/subst/lang/it-IT.rc	[iso-8859-1] Wed Jun 29 00:38:51 2016
@@ -6,6 +6,7 @@
     IDS_INVALID_PARAMETER "Numero di parametri errato - %s\n"
     IDS_INVALID_PARAMETER2 "Parametro errato - %s\n"
     IDS_PATH_NOT_FOUND "Path not found - %s\n"
+    IDS_ACCESS_DENIED "Access denied - %s\n"
     IDS_DRIVE_ALREADY_SUBSTED "Unità già sostituita\n"
     IDS_FAILED_WITH_ERRORCODE "Interruzione con codice di errore 0x%x: %s\n"
     IDS_USAGE "Associa un percorso ad una lettera di unità .\n\n\

Modified: trunk/reactos/base/system/subst/lang/pl-PL.rc
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/base/system/subst/lang/pl-…
==============================================================================
--- trunk/reactos/base/system/subst/lang/pl-PL.rc	[iso-8859-1] (original)
+++ trunk/reactos/base/system/subst/lang/pl-PL.rc	[iso-8859-1] Wed Jun 29 00:38:51 2016
@@ -14,6 +14,7 @@
     IDS_INVALID_PARAMETER "Nieprawidłowy parametr - %s\n"
     IDS_INVALID_PARAMETER2 "Nieprawidłowe parametry - %s\n"
     IDS_PATH_NOT_FOUND "Path not found - %s\n"
+    IDS_ACCESS_DENIED "Access denied - %s\n"
     IDS_DRIVE_ALREADY_SUBSTED "Na tym dysku już użyto komendy SUBST\n"
     IDS_FAILED_WITH_ERRORCODE "Błąd 0x%x: %s\n"
     IDS_USAGE "Powiązuje ścieżkę z literą napędu.\n\n\

Modified: trunk/reactos/base/system/subst/lang/ro-RO.rc
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/base/system/subst/lang/ro-…
==============================================================================
--- trunk/reactos/base/system/subst/lang/ro-RO.rc	[iso-8859-1] (original)
+++ trunk/reactos/base/system/subst/lang/ro-RO.rc	[iso-8859-1] Wed Jun 29 00:38:51 2016
@@ -8,6 +8,7 @@
     IDS_INVALID_PARAMETER "Număr eronat de parametri - %s\n"
     IDS_INVALID_PARAMETER2 "Parametru eronat - %s\n"
     IDS_PATH_NOT_FOUND "Path not found - %s\n"
+    IDS_ACCESS_DENIED "Access denied - %s\n"
     IDS_DRIVE_ALREADY_SUBSTED "Unitatea este deja SUBSTituită\n"
     IDS_FAILED_WITH_ERRORCODE "Operația a eșuat. Codul de eroare 0x%x: %s\n"
     IDS_USAGE "Substituie un director cu o unitate de stocare.\n\n\

Modified: trunk/reactos/base/system/subst/lang/ru-RU.rc
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/base/system/subst/lang/ru-…
==============================================================================
--- trunk/reactos/base/system/subst/lang/ru-RU.rc	[iso-8859-1] (original)
+++ trunk/reactos/base/system/subst/lang/ru-RU.rc	[iso-8859-1] Wed Jun 29 00:38:51 2016
@@ -8,6 +8,7 @@
     IDS_INVALID_PARAMETER "Неверное число параметров -
%s\n"
     IDS_INVALID_PARAMETER2 "Неверный параметр - %s\n"
     IDS_PATH_NOT_FOUND "Path not found - %s\n"
+    IDS_ACCESS_DENIED "Access denied - %s\n"
     IDS_DRIVE_ALREADY_SUBSTED "Диск уже сопоставлен\n"
     IDS_FAILED_WITH_ERRORCODE "Сбой с кодом ошибки 0x%x: %s\n"
     IDS_USAGE "Сопоставление имени диска указанному
пути.\n\n\

Modified: trunk/reactos/base/system/subst/lang/sq-AL.rc
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/base/system/subst/lang/sq-…
==============================================================================
--- trunk/reactos/base/system/subst/lang/sq-AL.rc	[iso-8859-1] (original)
+++ trunk/reactos/base/system/subst/lang/sq-AL.rc	[iso-8859-1] Wed Jun 29 00:38:51 2016
@@ -10,6 +10,7 @@
     IDS_INVALID_PARAMETER "Numri i parametrave jo i sakte - %s\n"
     IDS_INVALID_PARAMETER2 "Parameter i gabuar - %s\n"
     IDS_PATH_NOT_FOUND "Path not found - %s\n"
+    IDS_ACCESS_DENIED "Access denied - %s\n"
     IDS_DRIVE_ALREADY_SUBSTED "Drive tashme i SUBSTed\n"
     IDS_FAILED_WITH_ERRORCODE "Deshtoj me error kode 0x%x: %s\n"
     IDS_USAGE "Perputh rrugen e driverit me germën.\n\n\

Modified: trunk/reactos/base/system/subst/lang/tr-TR.rc
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/base/system/subst/lang/tr-…
==============================================================================
--- trunk/reactos/base/system/subst/lang/tr-TR.rc	[iso-8859-1] (original)
+++ trunk/reactos/base/system/subst/lang/tr-TR.rc	[iso-8859-1] Wed Jun 29 00:38:51 2016
@@ -8,6 +8,7 @@
     IDS_INVALID_PARAMETER "Değişken sayısı yanlış - %s\n"
     IDS_INVALID_PARAMETER2 "Geçersiz değişken - %s\n"
     IDS_PATH_NOT_FOUND "Path not found - %s\n"
+    IDS_ACCESS_DENIED "Access denied - %s\n"
     IDS_DRIVE_ALREADY_SUBSTED "Sürücü önceden SUBST edilmiş.\n"
     IDS_FAILED_WITH_ERRORCODE "Yanlışlık kodu ile başarısız oldu 0x%x:
%s\n"
     IDS_USAGE "Bir sürücü harfiyle bir yolu ilişkilendirir.\n\n\

Modified: trunk/reactos/base/system/subst/lang/uk-UA.rc
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/base/system/subst/lang/uk-…
==============================================================================
--- trunk/reactos/base/system/subst/lang/uk-UA.rc	[iso-8859-1] (original)
+++ trunk/reactos/base/system/subst/lang/uk-UA.rc	[iso-8859-1] Wed Jun 29 00:38:51 2016
@@ -8,6 +8,7 @@
     IDS_INVALID_PARAMETER "Невірна кількість параметрів -
%s\n"
     IDS_INVALID_PARAMETER2 "Невірний параметр - %s\n"
     IDS_PATH_NOT_FOUND "Path not found - %s\n"
+    IDS_ACCESS_DENIED "Access denied - %s\n"
     IDS_DRIVE_ALREADY_SUBSTED "До диску вже застосовано
SUBST\n"
     IDS_FAILED_WITH_ERRORCODE "Невдача з кодом помилки 0x%x:
%s\n"
     IDS_USAGE "Асоціює шлях з буквою диску.\n\n\

Modified: trunk/reactos/base/system/subst/lang/zh-CN.rc
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/base/system/subst/lang/zh-…
==============================================================================
--- trunk/reactos/base/system/subst/lang/zh-CN.rc	[iso-8859-1] (original)
+++ trunk/reactos/base/system/subst/lang/zh-CN.rc	[iso-8859-1] Wed Jun 29 00:38:51 2016
@@ -8,6 +8,7 @@
     IDS_INVALID_PARAMETER "参数个数不正确 - %s\n"
     IDS_INVALID_PARAMETER2 "æ— æ•ˆå‚æ•° - %s\n"
     IDS_PATH_NOT_FOUND "Path not found - %s\n"
+    IDS_ACCESS_DENIED "Access denied - %s\n"
     IDS_DRIVE_ALREADY_SUBSTED "驱动器已经运行过 SUBST\n"
     IDS_FAILED_WITH_ERRORCODE "æ“ä½œå¤±è´¥ï¼é”™è¯¯ç  0x%x：%s\n"
     IDS_USAGE "将一个路径用驱动器号关联。\n\n\

Modified: trunk/reactos/base/system/subst/lang/zh-TW.rc
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/base/system/subst/lang/zh-…
==============================================================================
--- trunk/reactos/base/system/subst/lang/zh-TW.rc	[iso-8859-1] (original)
+++ trunk/reactos/base/system/subst/lang/zh-TW.rc	[iso-8859-1] Wed Jun 29 00:38:51 2016
@@ -8,6 +8,7 @@
     IDS_INVALID_PARAMETER "參數個數不正確 - %s\n"
     IDS_INVALID_PARAMETER2 "無效參數 - %s\n"
     IDS_PATH_NOT_FOUND "Path not found - %s\n"
+    IDS_ACCESS_DENIED "Access denied - %s\n"
     IDS_DRIVE_ALREADY_SUBSTED "驅動器已經運行過 SUBST\n"
     IDS_FAILED_WITH_ERRORCODE "操作失敗！錯誤碼 0x%x：%s\n"
     IDS_USAGE "將一個路徑用驅動器號關聯。\n\n\

Modified: trunk/reactos/base/system/subst/resource.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/base/system/subst/resource…
==============================================================================
--- trunk/reactos/base/system/subst/resource.h	[iso-8859-1] (original)
+++ trunk/reactos/base/system/subst/resource.h	[iso-8859-1] Wed Jun 29 00:38:51 2016
@@ -9,4 +9,5 @@
 #define IDS_INVALID_PARAMETER         1004
 #define IDS_INVALID_PARAMETER2        1005
 #define IDS_PATH_NOT_FOUND            1006
-#define IDS_DRIVE_ALREADY_SUBSTED     1007
+#define IDS_ACCESS_DENIED             1007
+#define IDS_DRIVE_ALREADY_SUBSTED     1008

Modified: trunk/reactos/base/system/subst/subst.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/base/system/subst/subst.c?…
==============================================================================
--- trunk/reactos/base/system/subst/subst.c	[iso-8859-1] (original)
+++ trunk/reactos/base/system/subst/subst.c	[iso-8859-1] Wed Jun 29 00:38:51 2016
@@ -1,212 +1,254 @@
-/* PROJECT:         ReactOS Kernel
+/*
+ * PROJECT:         ReactOS Subst Command
  * LICENSE:         GPL - See COPYING in the top level directory
  * FILE:            base/system/subst/subst.c
- * PURPOSE:         Associates a path with a drive letter
+ * PURPOSE:         Maps a path with a drive letter
  * PROGRAMMERS:     Sam Arun Raj
+ *                  Peter Hater
+ *                  Hermes Belusca-Maito
  */
 
 /* INCLUDES *****************************************************************/
 
-#include <stdarg.h>
-#include <stdlib.h>
-#include <tchar.h>
+#include <stdio.h>
 
 #define WIN32_NO_STATUS
 #include <windef.h>
 #include <winbase.h>
 #include <winuser.h>
 
-#define NDEBUG
-#include <debug.h>
-
 #include "resource.h"
 
 /* FUNCTIONS ****************************************************************/
 
-VOID PrintError(DWORD ErrCode)
-{
-    TCHAR szFmtString[RC_STRING_MAX_SIZE] = {0};
-    TCHAR *buffer = (TCHAR*) calloc(2048,
-                                    sizeof(TCHAR));
-    TCHAR *msg = NULL;
-
-    if (buffer)
-    {
-        FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
-                      NULL,
-                      ErrCode,
-                      MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
-                      (TCHAR*)&msg,
-                      0,
-                      NULL);
-        LoadString(GetModuleHandle(NULL),
-                   IDS_FAILED_WITH_ERRORCODE,
-                   szFmtString,
-                   ARRAYSIZE(szFmtString));
-        _sntprintf(buffer,
+VOID PrintError(IN DWORD ErrCode)
+{
+    WCHAR szFmtString[RC_STRING_MAX_SIZE] = {0};
+    PWSTR buffer, msg = NULL;
+
+    buffer = (PWSTR)HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, 2048 * sizeof(WCHAR));
+    if (!buffer)
+        return;
+
+    FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
+                   NULL,
+                   ErrCode,
+                   MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
+                   (PWSTR)&msg,
+                   0,
+                   NULL);
+    if (msg)
+    {
+        LoadStringW(GetModuleHandleW(NULL),
+                    IDS_FAILED_WITH_ERRORCODE,
+                    szFmtString,
+                    ARRAYSIZE(szFmtString));
+        _snwprintf(buffer,
                    2048,
                    szFmtString,
                    ErrCode,
                    msg);
-        _tprintf(_T("%s"),
-                 buffer);
-        if (msg)
-            LocalFree(msg);
-        free(buffer);
-    }
+        wprintf(L"%s", buffer);
+
+        LocalFree(msg);
+    }
+
+    HeapFree(GetProcessHeap(), 0, buffer);
 }
 
 VOID DisplaySubstUsage(VOID)
 {
-    TCHAR szHelp[RC_STRING_MAX_SIZE] = {0};
-
-    LoadString(GetModuleHandle(NULL),
+    WCHAR szHelp[RC_STRING_MAX_SIZE] = {0};
+
+    LoadStringW(GetModuleHandleW(NULL),
                 IDS_USAGE,
                 szHelp,
                 ARRAYSIZE(szHelp));
-    _tprintf(_T("%s"), szHelp);
-}
-
-BOOLEAN IsSubstedDrive(TCHAR DriveLetter)
-{
-    BOOLEAN Result = FALSE;
-    TCHAR Drive[3] = _T("A:");
-    LPTSTR lpTargetPath = NULL;
-    DWORD CharCount, dwSize;
+    wprintf(L"%s", szHelp);
+}
+
+ULONG QuerySubstedDrive(IN WCHAR DriveLetter,
+                        IN OUT PWSTR* TargetPath OPTIONAL,
+                        IN OUT PULONG Size)
+{
+    ULONG Result = ERROR_INVALID_DRIVE;
+    WCHAR Drive[] = L"A:";
+    DWORD dwSize, CharCount = 0;
+    PWSTR lpTargetPath = NULL, tmp;
 
     Drive[0] = DriveLetter;
 
+    /* Check whether the user has given a pointer to a target path buffer */
+    if (!TargetPath)
+    {
+        /* No, therefore use a local buffer */
+        dwSize = MAX_PATH;
+        lpTargetPath = (PWSTR)HeapAlloc(GetProcessHeap(), 0, dwSize * sizeof(WCHAR));
+        if (!lpTargetPath)
+            return ERROR_NOT_ENOUGH_MEMORY;
+    }
+    else
+    {
+        /* Just use the user-given pointer to a buffer; Size should point to a valid
ULONG */
+        if (!Size)
+            return ERROR_INVALID_PARAMETER;
+
+        lpTargetPath = *TargetPath;
+        dwSize = *Size;
+    }
+
+Retry:
+    /* Try querying DOS device information */
+    CharCount = QueryDosDeviceW(Drive, lpTargetPath, dwSize);
+    if (!CharCount)
+        Result = GetLastError();
+
+    if (!CharCount && (Result == ERROR_INSUFFICIENT_BUFFER))
+    {
+        /* Reallocate the buffer with double size */
+        dwSize *= 2;
+        tmp = (PWSTR)HeapReAlloc(GetProcessHeap(), 0, lpTargetPath, dwSize *
sizeof(WCHAR));
+        if (!tmp)
+        {
+            /* Memory problem, bail out */
+            CharCount = 0;
+            Result = ERROR_NOT_ENOUGH_MEMORY;
+        }
+        else
+        {
+            /* Retry again */
+            lpTargetPath = tmp;
+            goto Retry;
+        }
+    }
+
+    if (CharCount)
+    {
+        if ( wcsncmp(lpTargetPath, L"\\??\\", 4) == 0 &&
+             ( (lpTargetPath[4] >= L'A' && lpTargetPath[4] <=
L'Z') ||
+               (lpTargetPath[4] >= L'a' && lpTargetPath[4] <=
L'z') ) )
+        {
+            /* The drive exists and is SUBSTed */
+            Result = ERROR_IS_SUBSTED;
+        }
+#if 0
+        else
+        {
+            /* The drive exists but is not SUBSTed */
+            Result = ERROR_INVALID_DRIVE;
+        }
+#endif
+    }
+
+    if (!TargetPath)
+    {
+        /* Free the local buffer */
+        HeapFree(GetProcessHeap(), 0, lpTargetPath);
+    }
+    else
+    {
+        /* Update the user-given pointers */
+        *TargetPath = lpTargetPath;
+        *Size = dwSize;
+    }
+
+    return Result;
+}
+
+VOID DumpSubstedDrives(VOID)
+{
+    WCHAR DriveLetter;
+    PWSTR lpTargetPath = NULL;
+    DWORD dwSize;
+    UCHAR i = 0;
+
     dwSize = MAX_PATH;
-    lpTargetPath = (LPTSTR)malloc(sizeof(TCHAR) * dwSize);
-    if (!lpTargetPath)
-        return FALSE;
-
-    CharCount = QueryDosDevice(Drive,
-                               lpTargetPath,
-                               dwSize);
-    while (!CharCount &&
-           GetLastError() == ERROR_INSUFFICIENT_BUFFER)
-    {
-        lpTargetPath = (LPTSTR)realloc(lpTargetPath, sizeof(TCHAR) * dwSize);
-        if (lpTargetPath)
-        {
-            CharCount = QueryDosDevice(Drive,
-                                       lpTargetPath,
-                                       dwSize);
-        }
-    }
-
-    if (CharCount)
-    {
-        Result = _tcsncmp(lpTargetPath, _T("\\??\\"), 4) == 0 &&
-            ( (lpTargetPath[4] >= _T('A') &&
-            lpTargetPath[4] <= _T('Z')) ||
-             (lpTargetPath[4] >= _T('a') &&
-            lpTargetPath[4] <= _T('z')) );
-    }
-
-    free(lpTargetPath);
-
-    return Result;
-}
-
-VOID DumpSubstedDrives(VOID)
-{
-    TCHAR Drive[3] = _T("A:");
-    LPTSTR lpTargetPath = NULL;
-    DWORD CharCount, dwSize;
-    INT i = 0;
-
-    dwSize = MAX_PATH;
-    lpTargetPath = (LPTSTR)malloc(sizeof(TCHAR) * dwSize);
+    lpTargetPath = (PWSTR)HeapAlloc(GetProcessHeap(), 0, dwSize * sizeof(WCHAR));
     if (!lpTargetPath)
         return;
 
     while (i < 26)
     {
-        Drive[0] = _T('A') + i;
-        CharCount = QueryDosDevice(Drive,
-                                   lpTargetPath,
-                                   dwSize);
-        while (!CharCount &&
-               GetLastError() == ERROR_INSUFFICIENT_BUFFER)
-        {
-            lpTargetPath = (LPTSTR)realloc(lpTargetPath, sizeof(TCHAR) * dwSize);
-            if (lpTargetPath)
-            {
-                CharCount = QueryDosDevice(Drive,
-                                           lpTargetPath,
-                                           dwSize);
-            }
-        }
-
-        if (CharCount)
-        {
-            if ( _tcsncmp(lpTargetPath, _T("\\??\\"), 4) == 0 &&
-                ( (lpTargetPath[4] >= _T('A') &&
-                lpTargetPath[4] <= _T('Z')) ||
-                 (lpTargetPath[4] >= _T('a') &&
-                lpTargetPath[4] <= _T('z')) ) )
-            {
-                _tprintf(_T("%s\\: => %s\n"),
-                         Drive,
-                         lpTargetPath + 4);
-            }
+        DriveLetter = L'A' + i;
+        if (QuerySubstedDrive(DriveLetter, &lpTargetPath, &dwSize) ==
ERROR_IS_SUBSTED)
+        {
+            wprintf(L"%c:\\: => %s\n", DriveLetter, lpTargetPath + 4);
         }
 
         i++;
     }
 
-    free(lpTargetPath);
-}
-
-INT DeleteSubst(TCHAR* Drive)
-{
-    BOOL Result;
-    TCHAR szFmtString[RC_STRING_MAX_SIZE] = {0};
-
-    LoadString(GetModuleHandle(NULL),
-                IDS_INVALID_PARAMETER2,
-                szFmtString,
-                ARRAYSIZE(szFmtString));
-
-    if ((_tcslen(Drive) != 2) || (Drive[1] != _T(':')))
-    {
-        _tprintf(szFmtString, Drive);
-        return 1;
-    }
-
-    if (!IsSubstedDrive(Drive[0]))
-    {
-        _tprintf(szFmtString, Drive);
-        return 1;
-    }
-
-    Result = DefineDosDevice(DDD_REMOVE_DEFINITION,
-                             Drive,
-                             NULL);
-    if (!Result)
-    {
-        PrintError(GetLastError());
-        return 1;
-    }
+    HeapFree(GetProcessHeap(), 0, lpTargetPath);
+}
+
+INT DeleteSubst(IN PWSTR Drive)
+{
+    DWORD dwResult;
+    WCHAR szFmtString[RC_STRING_MAX_SIZE] = {0};
+
+    if ((wcslen(Drive) != 2) || (Drive[1] != L':'))
+    {
+        dwResult = ERROR_INVALID_PARAMETER;
+        goto Quit;
+    }
+
+    if (QuerySubstedDrive(Drive[0], NULL, NULL) != ERROR_IS_SUBSTED)
+    {
+        dwResult = ERROR_INVALID_PARAMETER;
+        goto Quit;
+    }
+
+    if (!DefineDosDeviceW(DDD_REMOVE_DEFINITION, Drive, NULL))
+        dwResult = GetLastError();
+    else
+        dwResult = ERROR_SUCCESS;
+
+Quit:
+    switch (dwResult)
+    {
+        case ERROR_SUCCESS:
+            break;
+
+        // case ERROR_INVALID_DRIVE:
+        case ERROR_INVALID_PARAMETER:
+        {
+            LoadStringW(GetModuleHandleW(NULL),
+                        IDS_INVALID_PARAMETER2,
+                        szFmtString,
+                        ARRAYSIZE(szFmtString));
+            wprintf(szFmtString, Drive);
+            return 1;
+        }
+
+        case ERROR_ACCESS_DENIED:
+        {
+            LoadStringW(GetModuleHandleW(NULL),
+                        IDS_ACCESS_DENIED,
+                        szFmtString,
+                        ARRAYSIZE(szFmtString));
+            wprintf(szFmtString, Drive);
+            return 1;
+        }
+
+        default:
+        {
+            PrintError(GetLastError());
+            return 1;
+        }
+    }
+
     return 0;
 }
 
-INT AddSubst(TCHAR* Drive, TCHAR *Path)
-{
-    BOOL Result;
-    DWORD dwPathAttr;
-    TCHAR szFmtString[RC_STRING_MAX_SIZE] = {0};
-
-    if ((_tcslen(Drive) != 2) || (Drive[1] != _T(':')))
-    {
-        LoadString(GetModuleHandle(NULL),
-                    IDS_INVALID_PARAMETER2,
-                    szFmtString,
-                    ARRAYSIZE(szFmtString));
-        _tprintf(szFmtString, Drive);
-        return 1;
+INT AddSubst(IN PWSTR Drive, IN PWSTR Path)
+{
+    DWORD dwResult, dwPathAttr;
+    WCHAR szFmtString[RC_STRING_MAX_SIZE] = {0};
+
+    if ((wcslen(Drive) != 2) || (Drive[1] != L':'))
+    {
+        dwResult = ERROR_INVALID_PARAMETER;
+        goto Quit;
     }
 
     /*
@@ -215,82 +257,129 @@
      * the given path exists and really is a path to a directory, and if not,
      * just fail with an error.
      */
-    dwPathAttr = GetFileAttributes(Path);
+    dwPathAttr = GetFileAttributesW(Path);
     if ( (dwPathAttr == INVALID_FILE_ATTRIBUTES) ||
         !(dwPathAttr & FILE_ATTRIBUTE_DIRECTORY) )
     {
-        LoadString(GetModuleHandle(NULL),
-                    IDS_PATH_NOT_FOUND,
+        dwResult = ERROR_PATH_NOT_FOUND;
+        goto Quit;
+    }
+
+    /*
+     * QuerySubstedDrive (via QueryDosDevice) returns ERROR_FILE_NOT_FOUND only
+     * if there is no already existing drive mapping. For all other results
+     * (existing drive, be it already subst'ed or not, or other errors...)
+     * no attempt at defining a drive mapping should be done.
+     */
+    dwResult = QuerySubstedDrive(Drive[0], NULL, NULL);
+    if (dwResult != ERROR_FILE_NOT_FOUND)
+        goto Quit;
+
+    if (!DefineDosDeviceW(0, Drive, Path))
+        dwResult = GetLastError();
+    else
+        dwResult = ERROR_SUCCESS;
+
+Quit:
+    switch (dwResult)
+    {
+        case ERROR_SUCCESS:
+            break;
+
+        case ERROR_INVALID_DRIVE:
+        case ERROR_INVALID_PARAMETER:
+        {
+            LoadStringW(GetModuleHandleW(NULL),
+                        IDS_INVALID_PARAMETER2,
+                        szFmtString,
+                        ARRAYSIZE(szFmtString));
+            wprintf(szFmtString, Drive);
+            return 1;
+        }
+
+        case ERROR_IS_SUBSTED:
+        {
+            LoadStringW(GetModuleHandleW(NULL),
+                        IDS_DRIVE_ALREADY_SUBSTED,
+                        szFmtString,
+                        ARRAYSIZE(szFmtString));
+            wprintf(szFmtString);
+            return 1;
+        }
+
+        case ERROR_FILE_NOT_FOUND:
+        case ERROR_PATH_NOT_FOUND:
+        {
+            LoadStringW(GetModuleHandleW(NULL),
+                        IDS_PATH_NOT_FOUND,
+                        szFmtString,
+                        ARRAYSIZE(szFmtString));
+            wprintf(szFmtString, Path);
+            return 1;
+        }
+
+        case ERROR_ACCESS_DENIED:
+        {
+            LoadStringW(GetModuleHandleW(NULL),
+                        IDS_ACCESS_DENIED,
+                        szFmtString,
+                        ARRAYSIZE(szFmtString));
+            wprintf(szFmtString, Path);
+            return 1;
+        }
+
+        default:
+        {
+            PrintError(GetLastError());
+            return 1;
+        }
+    }
+
+    return 0;
+}
+
+int wmain(int argc, WCHAR* argv[])
+{
+    INT i;
+    WCHAR szFmtString[RC_STRING_MAX_SIZE] = {0};
+
+    for (i = 0; i < argc; i++)
+    {
+        if (!_wcsicmp(argv[i], L"/?"))
+        {
+            DisplaySubstUsage();
+            return 0;
+        }
+    }
+
+    if (argc < 3)
+    {
+        if (argc >= 2)
+        {
+            LoadStringW(GetModuleHandleW(NULL),
+                        IDS_INVALID_PARAMETER,
+                        szFmtString,
+                        ARRAYSIZE(szFmtString));
+            wprintf(szFmtString, argv[1]);
+            return 1;
+        }
+        DumpSubstedDrives();
+        return 0;
+    }
+
+    if (argc > 3)
+    {
+        LoadStringW(GetModuleHandleW(NULL),
+                    IDS_INCORRECT_PARAMETER_COUNT,
                     szFmtString,
                     ARRAYSIZE(szFmtString));
-        _tprintf(szFmtString, Path);
+        wprintf(szFmtString, argv[3]);
         return 1;
     }
 
-    if (IsSubstedDrive(Drive[0]))
-    {
-        // ERROR_IS_SUBSTED
-        LoadString(GetModuleHandle(NULL),
-                   IDS_DRIVE_ALREADY_SUBSTED,
-                   szFmtString,
-                   ARRAYSIZE(szFmtString));
-        _tprintf(szFmtString);
-        return 1;
-    }
-
-    Result = DefineDosDevice(0,
-                             Drive,
-                             Path);
-    if (!Result)
-    {
-        PrintError(GetLastError());
-        return 1;
-    }
-    return 0;
-}
-
-int _tmain(int argc, TCHAR* argv[])
-{
-    INT i;
-    TCHAR szFmtString[RC_STRING_MAX_SIZE] = {0};
-
-    for (i = 0; i < argc; i++)
-    {
-        if (!_tcsicmp(argv[i], _T("/?")))
-        {
-            DisplaySubstUsage();
-            return 0;
-        }
-    }
-
-    if (argc < 3)
-    {
-        if (argc >= 2)
-        {
-            LoadString(GetModuleHandle(NULL),
-                       IDS_INVALID_PARAMETER,
-                       szFmtString,
-                       ARRAYSIZE(szFmtString));
-            _tprintf(szFmtString, argv[1]);
-            return 1;
-        }
-        DumpSubstedDrives();
-        return 0;
-    }
-
-    if (argc > 3)
-    {
-        LoadString(GetModuleHandle(NULL),
-                   IDS_INCORRECT_PARAMETER_COUNT,
-                   szFmtString,
-                   ARRAYSIZE(szFmtString));
-        _tprintf(szFmtString, argv[3]);
-        return 1;
-    }
-
-    if (!_tcsicmp(argv[1], _T("/D")))
+    if (!_wcsicmp(argv[1], L"/D"))
         return DeleteSubst(argv[2]);
-    if (!_tcsicmp(argv[2], _T("/D")))
+    if (!_wcsicmp(argv[2], L"/D"))
         return DeleteSubst(argv[1]);
     return AddSubst(argv[1], argv[2]);
 }

Modified: trunk/reactos/base/system/subst/subst.rc
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/base/system/subst/subst.rc…
==============================================================================
--- trunk/reactos/base/system/subst/subst.rc	[iso-8859-1] (original)
+++ trunk/reactos/base/system/subst/subst.rc	[iso-8859-1] Wed Jun 29 00:38:51 2016
@@ -2,9 +2,9 @@
 
 #include "resource.h"
 
-#define REACTOS_STR_FILE_DESCRIPTION  "ReactOS Virtual Drive Utility Version
1.0"
-#define REACTOS_STR_INTERNAL_NAME     "subst"
-#define REACTOS_STR_ORIGINAL_FILENAME "subst.exe"
+#define REACTOS_STR_FILE_DESCRIPTION    "ReactOS Drive Letter Mapper Utility"
+#define REACTOS_STR_INTERNAL_NAME       "subst"
+#define REACTOS_STR_ORIGINAL_FILENAME   "subst.exe"
 #include <reactos/version.rc>
 
 /* UTF-8 */