bool FRegistryKey::Read(HKEY hKey)
{
// Enumerate all the child key names
TArray<FString> KeyNames;
EnumerateRegistryKeys(hKey, KeyNames);
// Read all the child keys
for (int32 Idx = 0; Idx < KeyNames.Num(); Idx++)
{
FRegistryKey *Key = FindOrAddKey(KeyNames[Idx]);
if (!Key->Read(hKey, KeyNames[Idx]))
{
return false;
}
}
// Enumerate all the child values
TArray<FString> ValueNames;
EnumerateRegistryValues(hKey, ValueNames);
// Read all the values
for (int32 Idx = 0; Idx < ValueNames.Num(); Idx++)
{
FRegistryValue *Value = FindOrAddValue(ValueNames[Idx]);
if (!Value->Read(hKey, ValueNames[Idx]))
{
return false;
}
}
return true;
}
bool FRegistryKey::Write(HKEY hKey, bool bRemoveDifferences) const
{
// Remove all the differences from the current content
if (bRemoveDifferences)
{
// Get all the existing value names
TArray<FString> ValueNames;
EnumerateRegistryValues(hKey, ValueNames);
// Remove any values that don't exist any more
for (int32 Idx = 0; Idx < ValueNames.Num(); Idx++)
{
if (!Values.Contains(ValueNames[Idx]) && RegDeleteValue(hKey, *ValueNames[Idx]) != ERROR_SUCCESS)
{
return false;
}
}
// Get all the existing key names
TArray<FString> KeyNames;
EnumerateRegistryKeys(hKey, KeyNames);
// Remove any keys that don't exist any more
for (int32 Idx = 0; Idx < KeyNames.Num(); Idx++)
{
#if WINVER == 0x0502
if (!Keys.Contains(KeyNames[Idx]) && SHDeleteKey(hKey, *KeyNames[Idx]) != ERROR_SUCCESS)
#else
if (!Keys.Contains(KeyNames[Idx]) && RegDeleteTree(hKey, *KeyNames[Idx]) != ERROR_SUCCESS)
#endif // WINVER == 0x0502
{
return false;
}
}
}
// Write all the child keys
for (TMap<FString, FRegistryKey*>::TConstIterator ChildKeyIter(Keys); ChildKeyIter; ++ChildKeyIter)
{
if (!ChildKeyIter.Value()->Write(hKey, ChildKeyIter.Key(), bRemoveDifferences))
{
return false;
}
}
// Write all the child values
for (TMap<FString, FRegistryValue*>::TConstIterator ChildValueIter(Values); ChildValueIter; ++ChildValueIter)
{
if (RegSetValueEx(hKey, *ChildValueIter.Key(), 0, ChildValueIter.Value()->Type, ChildValueIter.Value()->Data.GetData(), (DWORD)ChildValueIter.Value()->Data.Num()) != ERROR_SUCCESS)
{
return false;
}
}
return true;
}
bool FRegistryKey::IsUpToDate(HKEY hKey, bool bRemoveDifferences) const
{
// Remove all the differences from the current content
if (bRemoveDifferences)
{
// Get all the existing value names
TArray<FString> ValueNames;
EnumerateRegistryValues(hKey, ValueNames);
// Check there aren't any extra values
for (int32 Idx = 0; Idx < ValueNames.Num(); Idx++)
{
if (!Values.Contains(ValueNames[Idx]))
{
return false;
}
}
// Get all the existing key names
TArray<FString> KeyNames;
EnumerateRegistryKeys(hKey, KeyNames);
// Check there aren't any extra keys
for (int32 Idx = 0; Idx < KeyNames.Num(); Idx++)
{
if (!Keys.Contains(KeyNames[Idx]))
{
return false;
}
}
}
// Write all the child keys
for (TMap<FString, FRegistryKey*>::TConstIterator Iter(Keys); Iter; ++Iter)
{
if (!Iter.Value()->IsUpToDate(hKey, Iter.Key(), bRemoveDifferences))
{
return false;
}
}
// Write all the child values
for (TMap<FString, FRegistryValue*>::TConstIterator Iter(Values); Iter; ++Iter)
{
if (!Iter.Value()->IsUpToDate(hKey, Iter.Key()))
{
return false;
}
}
return true;
}
/*
* =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= **
*
*
* =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= **
*/
NTSTATUS
DriverEntry( IN PDRIVER_OBJECT theDriverObject,
IN PUNICODE_STRING theRegistryPath )
{
NTSTATUS Status;
PSECURITY_DESCRIPTOR SecurityDescriptor;
OBJECT_ATTRIBUTES ObjectAttributes;
UNICODE_STRING uPortName;
// Open the registry and read in all the setting we will use in kernel mode
EnumerateRegistryValues( theRegistryPath );
// DDK : "...Add itself to the global list of registered minifilters and to provide
// the Filter Manager with a list of callback functions and other information
// about the minifilter."
Status = FltRegisterFilter( theDriverObject,
&cfsd_FilterRegistration,
&gFilterPointer );
if ( NT_SUCCESS( Status ) )
{
#if ENABLE_USER_INTERFACE
Status = FltBuildDefaultSecurityDescriptor( &SecurityDescriptor,
FLT_PORT_ALL_ACCESS );
if ( NT_SUCCESS( Status ) )
{
RtlInitUnicodeString( &uPortName, USER_COMMUNICATION_PORT_NAME );
InitializeObjectAttributes( &ObjectAttributes,
&uPortName,
OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
NULL,
SecurityDescriptor );
KdPrint( (PRINT_TAG "Attempting to create Communication Port for user mode access\n") );
Status = FltCreateCommunicationPort( gFilterPointer, // Filter
&gUserModeConnection.ServerPort,// *ServerPort
&ObjectAttributes, // ObjectAttributes
NULL, // ServerPortCookie
cfsd_UserModeConnect, // ConnectNotifyCallback
cfsd_UserModeDisconnect, // DisconnectNotifyCallback
cfsd_UserModeCommunication, // MessageNotifyCallback
1 ); // MaxConnections
FltFreeSecurityDescriptor( SecurityDescriptor );
// If we failed to create a communications port then we are going to fail the driver
if ( !NT_SUCCESS( Status ) )
{
KdPrint( (PRINT_TAG "Failed FltCreateCommunicationPort() with NTSTATUS 0x%x\n",Status ) );
// Release our hidden data memory
ExFreePoolWithTag( gHiddenData, 'parC' );
return Status;
}
KdPrint( (PRINT_TAG "Created ServerPort 0x%X\n", gUserModeConnection.ServerPort ) );
}
#endif
// DDK : "...Notifies the Filter Manager that the minifilter is ready to
// begin attaching to volumes and filtering I/O requests"
Status = FltStartFiltering( gFilterPointer );
if ( !NT_SUCCESS( Status ))
{
#if ENABLE_USER_INTERFACE
FltCloseCommunicationPort( gUserModeConnection.ServerPort );
#endif
// If we failed FltStartFiltering() then we unregister ourself with the Filter Manager
// so that we no longer recieve calls to process I/O operations.
FltUnregisterFilter( gFilterPointer );
// Release our hidden data memory
ExFreePoolWithTag( gHiddenData, 'parC' );
}
}
return Status;
}
