[jgardou] 64421: [ADVAPI32] - Implement DeleteKey for HKCR subkeys CORE-8582

Author: jgardou
Date: Tue Sep 30 20:01:00 2014
New Revision: 64421

URL: http://svn.reactos.org/svn/reactos?rev=64421&view=rev
Log:
[ADVAPI32]
 - Implement DeleteKey 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] Tue Sep 30 20:01:00 2014
@@ -238,7 +238,6 @@
     /* Close it if we must */
     if (QueriedKey != hKey)
     {
-        /* The original key is on the machine view */
         RegCloseKey(QueriedKey);
     }
 
@@ -261,9 +260,68 @@
     /* Close it if we must */
     if (QueriedKey != hKey)
     {
+        RegCloseKey(QueriedKey);
+    }
+
+    return ErrorCode;
+}
+
+LONG
+WINAPI
+DeleteHKCRKey(
+    _In_ HKEY hKey,
+    _In_ LPCWSTR lpSubKey)
+{
+    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 subkey */
+        return RegDeleteKeyW(hKey, lpSubKey);
+    }
+
+    if (ErrorCode != ERROR_SUCCESS)
+    {
+        /* Somehow we failed for another reason (maybe deleted key or whatever) */
+        return ErrorCode;
+    }
+
+    ErrorCode = RegDeleteKeyW(QueriedKey, lpSubKey);
+
+    /* 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 = RegDeleteKeyW(QueriedKey, lpSubKey);
+
+    /* 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] Tue Sep 30 20:01:00 2014
@@ -1227,6 +1227,9 @@
         return RtlNtStatusToDosError(Status);
     }
 
+    if (IsHKCRKey(ParentKey))
+        return DeleteHKCRKey(ParentKey, lpSubKey);
+
     RtlInitUnicodeString(&SubKeyName,
                          (LPWSTR)lpSubKey);
     InitializeObjectAttributes(&ObjectAttributes,

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] Tue Sep 30 20:01:00 2014
@@ -30,3 +30,10 @@
     _In_ DWORD ulOptions,
     _In_ REGSAM samDesired,
     _In_ PHKEY phkResult);
+
+LONG
+WINAPI
+DeleteHKCRKey(
+    _In_ HKEY hKey,
+    _In_ LPCWSTR lpSubKey);
+