[jgardou] 64443: [ADVAPI32] - Implement RegQueryValueEx for HKCR subkeys CORE-8582

Author: jgardou
Date: Wed Oct  1 17:48:26 2014
New Revision: 64443
URL: http://svn.reactos.org/svn/reactos?rev=64443&view=rev
Log:
[ADVAPI32]
 - Implement RegQueryValueEx for HKCR subkeys
CORE-8582
Modified:
    trunk/reactos/dll/win32/advapi32/reg/hkcr.c
    trunk/reactos/dll/win32/advapi32/reg/reg.c
    trunk/reactos/dll/win32/advapi32/reg/reg.h
Modified: trunk/reactos/dll/win32/advapi32/reg/hkcr.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/advapi32/reg/hkc…
==============================================================================
--- trunk/reactos/dll/win32/advapi32/reg/hkcr.c [iso-8859-1] (original)
+++ trunk/reactos/dll/win32/advapi32/reg/hkcr.c [iso-8859-1] Wed Oct  1 17:48:26 2014
@@ -268,6 +268,7 @@
     return ErrorCode;
 }
+/* HKCR version of RegDeleteKeyExW */
 LONG
 WINAPI
 DeleteHKCRKey(
@@ -329,3 +330,68 @@
     return ErrorCode;
 }
+
+/* HKCR version of RegQueryValueExW */
+LONG
+WINAPI
+QueryHKCRValue(
+    _In_ HKEY hKey,
+    _In_ LPCWSTR Name,
+    _In_ LPDWORD Reserved,
+    _In_ LPDWORD Type,
+    _In_ LPBYTE Data,
+    _In_ LPDWORD Count)
+{
+    HKEY QueriedKey;
+    LONG ErrorCode;
+
+    ASSERT(IsHKCRKey(hKey));
+
+    /* Remove the HKCR flag while we're working */
+    hKey = (HKEY)(((ULONG_PTR)hKey) & ~0x2);
+
+    ErrorCode = GetPreferredHKCRKey(hKey, &QueriedKey);
+
+    if (ErrorCode == ERROR_FILE_NOT_FOUND)
+    {
+        /* The key doesn't exist on HKCU side, no chance for a value in it */
+        return RegQueryValueExW(hKey, Name, Reserved, Type, Data, Count);
+    }
+
+    if (ErrorCode != ERROR_SUCCESS)
+    {
+        /* Somehow we failed for another reason (maybe deleted key or whatever) */
+        return ErrorCode;
+    }
+
+    ErrorCode = RegQueryValueExW(QueriedKey, Name, Reserved, Type, Data, Count);
+
+    /* Close it if we must */
+    if (QueriedKey != hKey)
+    {
+        /* The original key is on the machine view */
+        RegCloseKey(QueriedKey);
+    }
+
+    /* Anything else than ERROR_FILE_NOT_FOUND means that we found it, even if it is with
failures. */
+    if (ErrorCode != ERROR_FILE_NOT_FOUND)
+        return ErrorCode;
+
+    /* If we're here, we must open from HKLM key. */
+    ErrorCode = GetFallbackHKCRKey(hKey, &QueriedKey);
+    if (ErrorCode != ERROR_SUCCESS)
+    {
+        /* Maybe the key doesn't exist in the HKLM view */
+        return ErrorCode;
+    }
+
+    ErrorCode = RegQueryValueExW(QueriedKey, Name, Reserved, Type, Data, Count);
+
+    /* Close it if we must */
+    if (QueriedKey != hKey)
+    {
+        RegCloseKey(QueriedKey);
+    }
+
+    return ErrorCode;
+}
Modified: trunk/reactos/dll/win32/advapi32/reg/reg.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/advapi32/reg/reg…
==============================================================================
--- trunk/reactos/dll/win32/advapi32/reg/reg.c  [iso-8859-1] (original)
+++ trunk/reactos/dll/win32/advapi32/reg/reg.c  [iso-8859-1] Wed Oct  1 17:48:26 2014
@@ -4082,12 +4082,13 @@
  */
 LONG
 WINAPI
-RegQueryValueExW(HKEY hkeyorg,
-                 LPCWSTR name,
-                 LPDWORD reserved,
-                 LPDWORD type,
-                 LPBYTE data,
-                 LPDWORD count)
+RegQueryValueExW(
+    _In_ HKEY hkeyorg,
+    _In_ LPCWSTR name,
+    _In_ LPDWORD reserved,
+    _In_ LPDWORD type,
+    _In_ LPBYTE data,
+    _In_ LPDWORD count)
 {
     HANDLE hkey;
     NTSTATUS status;
@@ -4107,6 +4108,13 @@
     if (!NT_SUCCESS(status))
     {
         return RtlNtStatusToDosError(status);
+    }
+
+    if (IsHKCRKey(hkey))
+    {
+        LONG ErrorCode = QueryHKCRValue(hkey, name, reserved, type, data, count);
+        ClosePredefKey(hkey);
+        return ErrorCode;
     }
     RtlInitUnicodeString( &name_str, name );
Modified: trunk/reactos/dll/win32/advapi32/reg/reg.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/advapi32/reg/reg…
==============================================================================
--- trunk/reactos/dll/win32/advapi32/reg/reg.h  [iso-8859-1] (original)
+++ trunk/reactos/dll/win32/advapi32/reg/reg.h  [iso-8859-1] Wed Oct  1 17:48:26 2014
@@ -39,3 +39,13 @@
     _In_ REGSAM RegSam,
     _In_ DWORD Reserved);
+LONG
+WINAPI
+QueryHKCRValue(
+    _In_ HKEY hKey,
+    _In_ LPCWSTR Name,
+    _In_ LPDWORD Reserved,
+    _In_ LPDWORD Type,
+    _In_ LPBYTE Data,
+    _In_ LPDWORD Count);
+