709 lines
17 KiB
C++
709 lines
17 KiB
C++
//---------------------------------------------------------------------------
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//
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// Module: fn.cpp
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//
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// Description:
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//
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//
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//@@BEGIN_MSINTERNAL
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// Development Team:
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// Mike McLaughlin
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//
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// History: Date Author Comment
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//
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// To Do: Date Author Comment
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//
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//@@END_MSINTERNAL
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//
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// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
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// KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
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// PURPOSE.
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//
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// Copyright (c) 1996-1999 Microsoft Corporation. All Rights Reserved.
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//
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//---------------------------------------------------------------------------
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#include "common.h"
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EXTERN_C VOID KeAttachProcess(PVOID);
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EXTERN_C VOID KeDetachProcess(VOID);
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//---------------------------------------------------------------------------
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//---------------------------------------------------------------------------
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PLIST_FILTER_NODE gplstFilterNode = NULL;
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PLIST_MULTI_LOGICAL_FILTER_NODE gplstLogicalFilterNode = NULL;
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//---------------------------------------------------------------------------
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//---------------------------------------------------------------------------
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NTSTATUS
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InitializeFilterNode()
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{
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if(gplstFilterNode == NULL) {
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gplstFilterNode = new LIST_FILTER_NODE;
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if(gplstFilterNode == NULL) {
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return(STATUS_INSUFFICIENT_RESOURCES);
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}
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}
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if(gplstLogicalFilterNode == NULL) {
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gplstLogicalFilterNode = new LIST_MULTI_LOGICAL_FILTER_NODE;
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if(gplstLogicalFilterNode == NULL) {
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return(STATUS_INSUFFICIENT_RESOURCES);
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}
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}
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return(STATUS_SUCCESS);
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}
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#pragma PAGEABLE_CODE
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#pragma PAGEABLE_DATA
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VOID
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UninitializeFilterNode()
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{
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PFILTER_NODE pFilterNode;
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FOR_EACH_LIST_ITEM_DELETE(gplstFilterNode, pFilterNode) {
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if (pFilterNode->pDeviceNode) {
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pFilterNode->pDeviceNode->pFilterNode=NULL;
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}
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delete pFilterNode;
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DELETE_LIST_ITEM(gplstFilterNode);
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} END_EACH_LIST_ITEM
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delete gplstFilterNode;
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gplstFilterNode = NULL;
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delete gplstLogicalFilterNode;
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gplstLogicalFilterNode = NULL;
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}
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//---------------------------------------------------------------------------
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CFilterNode::CFilterNode(
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ULONG fulType
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)
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{
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ASSERT(gplstFilterNode != NULL);
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SetType(fulType);
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AddListEnd(gplstFilterNode);
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DPF2(60, "CFilterNode: %08x %s", this, DumpName());
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}
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CFilterNode::~CFilterNode(
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)
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{
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PFILTER_NODE pFilterNode;
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Assert(this);
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DPF2(60, "~CFilterNode: %08x %s", this, DumpName());
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RemoveListCheck();
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if (pDeviceNode) {
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pDeviceNode->pFilterNode = NULL;
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}
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if (pFileObject) {
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::ObDereferenceObject(pFileObject);
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pFileObject = NULL;
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}
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delete pDeviceNode;
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FOR_EACH_LIST_ITEM(gplstFilterNode, pFilterNode) {
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pFilterNode->lstConnectedFilterNode.RemoveList(this);
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} END_EACH_LIST_ITEM
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// Free all other memory
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lstFreeMem.EnumerateList(CListDataItem::Destroy);
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}
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NTSTATUS
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CFilterNode::Create(
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PWSTR pwstrDeviceInterface
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)
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{
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PFILTER_NODE_INSTANCE pFilterNodeInstance = NULL;
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PKEY_VALUE_FULL_INFORMATION pkvfi = NULL;
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NTSTATUS Status = STATUS_SUCCESS;
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HANDLE hkeyDeviceClass = NULL;
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HANDLE hkeySysaudio = NULL;
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UNICODE_STRING ustrFilterName;
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KSPROPERTY PropertyComponentId;
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KSCOMPONENTID ComponentId;
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ULONG BytesReturned;
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PFILE_OBJECT pFileObject;
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this->pwstrDeviceInterface = new WCHAR[wcslen(pwstrDeviceInterface) + 1];
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if(this->pwstrDeviceInterface == NULL) {
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Status = STATUS_INSUFFICIENT_RESOURCES;
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goto exit;
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}
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wcscpy(this->pwstrDeviceInterface, pwstrDeviceInterface);
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Status = lstFreeMem.AddList(this->pwstrDeviceInterface);
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if(!NT_SUCCESS(Status)) {
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Trap();
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delete this->pwstrDeviceInterface;
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goto exit;
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}
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Status = CFilterNodeInstance::Create(&pFilterNodeInstance, this);
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if(!NT_SUCCESS(Status)) {
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goto exit;
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}
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pFileObject = pFilterNodeInstance->pFileObject;
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// Get the filter's friendly name
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RtlInitUnicodeString(&ustrFilterName, this->pwstrDeviceInterface);
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Status = IoOpenDeviceInterfaceRegistryKey(
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&ustrFilterName,
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KEY_READ,
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&hkeyDeviceClass);
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if(!NT_SUCCESS(Status)) {
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goto exit;
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}
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Status = OpenRegistryKey(L"Sysaudio", &hkeySysaudio, hkeyDeviceClass);
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if(NT_SUCCESS(Status)) {
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Status = QueryRegistryValue(hkeySysaudio, L"Disabled", &pkvfi);
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if(NT_SUCCESS(Status)) {
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if(pkvfi->Type == REG_DWORD) {
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if(*((PULONG)(((PUCHAR)pkvfi) + pkvfi->DataOffset))) {
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Status = STATUS_SERVER_DISABLED;
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delete pkvfi;
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goto exit;
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}
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}
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delete pkvfi;
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}
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Status = QueryRegistryValue(hkeySysaudio, L"Device", &pkvfi);
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if(NT_SUCCESS(Status)) {
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if(pkvfi->Type == REG_SZ && pkvfi->DataLength > 0) {
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Status = lstFreeMem.AddList(pkvfi);
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if(!NT_SUCCESS(Status)) {
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Trap();
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delete pkvfi;
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goto exit;
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}
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Status = AddDeviceInterfaceMatch(
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(PWSTR)(((PUCHAR)pkvfi) + pkvfi->DataOffset));
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if(!NT_SUCCESS(Status)) {
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Trap();
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delete pkvfi;
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goto exit;
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}
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}
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else {
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delete pkvfi;
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}
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}
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Status = QueryRegistryValue(hkeySysaudio, L"Order", &pkvfi);
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if(NT_SUCCESS(Status)) {
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if(pkvfi->Type == REG_DWORD) {
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ulOrder = *((PULONG)(((PUCHAR)pkvfi) + pkvfi->DataOffset));
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}
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delete pkvfi;
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}
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Status = QueryRegistryValue(hkeySysaudio, L"Capture", &pkvfi);
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if(NT_SUCCESS(Status)) {
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if(pkvfi->Type == REG_DWORD) {
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if(*((PULONG)(((PUCHAR)pkvfi) + pkvfi->DataOffset))) {
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ulFlags |= FN_FLAGS_CAPTURE;
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}
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else {
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ulFlags |= FN_FLAGS_NO_CAPTURE;
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}
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}
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delete pkvfi;
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}
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Status = QueryRegistryValue(hkeySysaudio, L"Render", &pkvfi);
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if(NT_SUCCESS(Status)) {
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if(pkvfi->Type == REG_DWORD) {
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if(*((PULONG)(((PUCHAR)pkvfi) + pkvfi->DataOffset))) {
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ulFlags |= FN_FLAGS_RENDER;
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}
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else {
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ulFlags |= FN_FLAGS_NO_RENDER;
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}
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}
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delete pkvfi;
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}
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}
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Status = QueryRegistryValue(hkeyDeviceClass, L"FriendlyName", &pkvfi);
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if(NT_SUCCESS(Status)) {
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if(pkvfi->Type == REG_SZ && pkvfi->DataLength > 0) {
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Status = lstFreeMem.AddList(pkvfi);
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if(!NT_SUCCESS(Status)) {
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Trap();
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delete pkvfi;
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goto exit;
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}
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pwstrFriendlyName = (PWSTR)(((PUCHAR)pkvfi) + pkvfi->DataOffset);
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}
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else {
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delete pkvfi;
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}
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}
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// Get the component Id of the filter
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PropertyComponentId.Set = KSPROPSETID_General;
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PropertyComponentId.Id = KSPROPERTY_GENERAL_COMPONENTID;
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PropertyComponentId.Flags = KSPROPERTY_TYPE_GET;
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Status = KsSynchronousIoControlDevice(
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pFileObject,
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KernelMode,
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IOCTL_KS_PROPERTY,
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&PropertyComponentId,
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sizeof(PropertyComponentId),
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&ComponentId,
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sizeof(ComponentId),
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&BytesReturned);
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// Store the component Id
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if (NT_SUCCESS(Status)) {
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ASSERT(BytesReturned >= sizeof(ComponentId));
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this->ComponentId = new KSCOMPONENTID;
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if (this->ComponentId) {
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RtlCopyMemory(this->ComponentId,
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&ComponentId,
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sizeof(KSCOMPONENTID));
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Status = lstFreeMem.AddList(this->ComponentId);
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if(!NT_SUCCESS(Status)) {
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delete this->ComponentId;
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this->ComponentId = NULL;
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}
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}
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}
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else {
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this->ComponentId = NULL;
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}
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Status = this->ProfileFilter(pFileObject);
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exit:
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if(hkeySysaudio != NULL) {
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ZwClose(hkeySysaudio);
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}
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if(hkeyDeviceClass != NULL) {
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ZwClose(hkeyDeviceClass);
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}
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if (pFilterNodeInstance) {
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pFilterNodeInstance->Destroy();
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}
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return(Status);
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}
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NTSTATUS
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CFilterNode::ProfileFilter(
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PFILE_OBJECT pFileObject
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)
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{
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NTSTATUS Status = STATUS_SUCCESS;
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PKSMULTIPLE_ITEM pCategories = NULL;
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PKSMULTIPLE_ITEM pConnections = NULL;
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PKSMULTIPLE_ITEM pNodes = NULL;
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ULONG PinId;
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PPIN_INFO pPinInfo;
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ULONG i;
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KSTOPOLOGY Topology;
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RtlZeroMemory(&Topology, sizeof(Topology));
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// Get the number of pins
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Status = GetPinProperty(
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pFileObject,
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KSPROPERTY_PIN_CTYPES,
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0, // doesn't matter for ctypes
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sizeof(cPins),
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(PVOID)&cPins);
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if(!NT_SUCCESS(Status)) {
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Trap();
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goto exit;
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}
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// Get the topology of the filter
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Status = GetProperty(
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pFileObject,
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&KSPROPSETID_Topology,
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KSPROPERTY_TOPOLOGY_CATEGORIES,
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0,
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NULL,
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(PVOID*)&pCategories);
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if(!NT_SUCCESS(Status)) {
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Trap();
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goto exit;
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}
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if(pCategories != NULL) {
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Topology.CategoriesCount = pCategories->Count;
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Topology.Categories = (GUID*)(pCategories + 1);
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ULONG fulType = 0;
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for(i = 0; i < pCategories->Count; i++) {
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GetFilterTypeFromGuid((LPGUID)&Topology.Categories[i], &fulType);
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}
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SetType(fulType);
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}
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Status = GetProperty(
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pFileObject,
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&KSPROPSETID_Topology,
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KSPROPERTY_TOPOLOGY_NODES,
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0,
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NULL,
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(PVOID*)&pNodes);
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if(!NT_SUCCESS(Status)) {
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Trap();
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goto exit;
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}
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if(pNodes != NULL) {
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Status = lstFreeMem.AddList(pNodes);
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if(!NT_SUCCESS(Status)) {
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Trap();
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delete pNodes;
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goto exit;
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}
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Topology.TopologyNodesCount = pNodes->Count;
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Topology.TopologyNodes = (GUID*)(pNodes + 1);
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}
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Status = GetProperty(
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pFileObject,
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&KSPROPSETID_Topology,
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KSPROPERTY_TOPOLOGY_CONNECTIONS,
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0,
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NULL,
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(PVOID*)&pConnections);
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if(!NT_SUCCESS(Status)) {
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Trap();
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goto exit;
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}
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if(pConnections != NULL) {
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Topology.TopologyConnectionsCount = pConnections->Count;
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Topology.TopologyConnections =
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(PKSTOPOLOGY_CONNECTION)(pConnections + 1);
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}
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// Each pin loop
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for(PinId = 0; PinId < cPins; PinId++) {
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pPinInfo = new PIN_INFO(this, PinId);
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if(pPinInfo == NULL) {
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Status = STATUS_INSUFFICIENT_RESOURCES;
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Trap();
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goto exit;
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}
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Status = pPinInfo->Create(pFileObject);
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if(!NT_SUCCESS(Status)) {
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goto exit;
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}
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}
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Status = CreateTopology(this, &Topology);
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if(!NT_SUCCESS(Status)) {
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goto exit;
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}
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Status = lstPinInfo.EnumerateList(CPinInfo::CreatePhysicalConnection);
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if(Status == STATUS_CONTINUE) {
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Status = STATUS_SUCCESS;
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}
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else if(!NT_SUCCESS(Status)) {
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goto exit;
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}
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Status = CLogicalFilterNode::CreateAll(this);
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if(!NT_SUCCESS(Status)) {
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goto exit;
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}
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exit:
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delete pCategories;
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delete pConnections;
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return(Status);
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}
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NTSTATUS
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CFilterNode::DuplicateForCapture(
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)
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{
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PLOGICAL_FILTER_NODE pLogicalFilterNode;
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NTSTATUS Status = STATUS_SUCCESS;
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PFILTER_NODE pFilterNode = NULL;
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if(GetType() & FILTER_TYPE_DUP_FOR_CAPTURE) {
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FOR_EACH_LIST_ITEM(&lstLogicalFilterNode, pLogicalFilterNode) {
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if(!pLogicalFilterNode->IsRenderAndCapture()) {
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ASSERT(NT_SUCCESS(Status));
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goto exit;
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}
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} END_EACH_LIST_ITEM
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pFilterNode = new FILTER_NODE(GetType());
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if(pFilterNode == NULL) {
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Status = STATUS_INSUFFICIENT_RESOURCES;
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Trap();
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goto exit;
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}
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Status = pFilterNode->Create(GetDeviceInterface());
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if(!NT_SUCCESS(Status)) {
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goto exit;
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}
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SetRenderOnly();
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pFilterNode->SetCaptureOnly();
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}
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exit:
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if(!NT_SUCCESS(Status)) {
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Trap();
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delete pFilterNode;
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}
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return(Status);
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}
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BOOL
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CFilterNode::IsDeviceInterfaceMatch(
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PDEVICE_NODE pDeviceNode
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)
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{
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PWSTR pwstr, pwstrDeviceInterface;
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UNICODE_STRING String1, String2;
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Assert(this);
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if(lstwstrDeviceInterfaceMatch.IsLstEmpty()) {
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return(TRUE);
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}
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//
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// The +4 for both the strings is to eliminate the \\.\ differences in
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// user mode device interface names & kernel mode device interface names
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//
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pwstrDeviceInterface = pDeviceNode->GetDeviceInterface()+4;
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RtlInitUnicodeString(&String2, pwstrDeviceInterface);
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FOR_EACH_LIST_ITEM(&lstwstrDeviceInterfaceMatch, pwstr) {
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RtlInitUnicodeString(&String1, (pwstr+4));
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if (RtlEqualUnicodeString(&String1, &String2, TRUE)) {
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return(TRUE);
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}
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} END_EACH_LIST_ITEM
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return(FALSE);
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}
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VOID
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CFilterNode::SetType(
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ULONG fulType
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)
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{
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this->fulType |= fulType;
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//
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// This is because of left overs (type bridge) in the registry
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// that look like aliases.
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//
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if(this->fulType & FILTER_TYPE_TOPOLOGY) {
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this->fulType = (FILTER_TYPE_AUDIO | FILTER_TYPE_TOPOLOGY);
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}
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GetDefaultOrder(this->fulType, &ulOrder);
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}
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NTSTATUS
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CFilterNode::CreatePin(
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PKSPIN_CONNECT pPinConnect,
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ACCESS_MASK Access,
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PHANDLE pHandle
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)
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{
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NTSTATUS Status;
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::KeAttachProcess(this->pProcess);
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Status = KsCreatePin(this->hFileHandle,
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pPinConnect,
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Access,
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pHandle);
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::KeDetachProcess();
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return(Status);
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}
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BOOL
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CFilterNode::DoesGfxMatch(
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HANDLE hGfx,
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PWSTR pwstrDeviceName,
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ULONG GfxOrder
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)
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{
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ULONG DeviceCount;
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UNICODE_STRING usInDevice, usfnDevice;
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PWSTR pwstr;
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RtlInitUnicodeString(&usInDevice, (pwstrDeviceName+4));
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//
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// Skip if it is not a GFX
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//
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DPF1(90, "DoesGfxMatch:: fultype=%x", this->fulType);
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if (!(this->fulType & FILTER_TYPE_GFX)) {
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return(FALSE);
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}
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//
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// If it is a valid handle value, check whether the handle matches
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//
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if (hGfx) {
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if (this->hFileHandle != hGfx) {
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return(FALSE);
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}
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}
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//
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// Skip if the order does not match
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//
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DPF1(90, "DoesGfxMatch:: order=%x", this->ulOrder);
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if (GfxOrder != this->ulOrder) {
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return(FALSE);
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}
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//
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// Skip if the match device list is empty :: should not happen with GFX
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//
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if(lstwstrDeviceInterfaceMatch.IsLstEmpty()) {
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ASSERT(!"GFX with no device to attach to!\n");
|
|
return(FALSE);
|
|
}
|
|
//
|
|
// Check if any of the Match device strings matches the device interface
|
|
// passed in. (In case of GFX we should have only one string though)
|
|
//
|
|
DeviceCount = 0;
|
|
FOR_EACH_LIST_ITEM(&lstwstrDeviceInterfaceMatch, pwstr) {
|
|
ASSERT(DeviceCount == 0);
|
|
RtlInitUnicodeString(&usfnDevice, (pwstr+4));
|
|
DPF1(95, "DoesGfxMatch:: new di = %s)", DbgUnicode2Sz(pwstrDeviceName));
|
|
DPF1(95, "DoesGfxMatch:: old di = %s)", DbgUnicode2Sz(pwstr));
|
|
if (RtlEqualUnicodeString(&usInDevice, &usfnDevice, TRUE)) {
|
|
DPF1(90, "Found a duplicate GFX, pFilterNode = %x", this);
|
|
return(TRUE);
|
|
}
|
|
DeviceCount++;
|
|
} END_EACH_LIST_ITEM
|
|
return (FALSE);
|
|
}
|
|
|
|
//---------------------------------------------------------------------------
|
|
|
|
#ifdef DEBUG
|
|
|
|
ULONG nFilter = 0;
|
|
|
|
VOID
|
|
DumpSysAudio(
|
|
)
|
|
{
|
|
if(gplstFilterNode != NULL) {
|
|
gplstFilterNode->Dump();
|
|
}
|
|
if(gplstDeviceNode != NULL) {
|
|
gplstDeviceNode->Dump();
|
|
}
|
|
if(gplstLogicalFilterNode != NULL &&
|
|
(ulDebugFlags & (DEBUG_FLAGS_FILTER |
|
|
DEBUG_FLAGS_DEVICE |
|
|
DEBUG_FLAGS_LOGICAL_FILTER)) ==
|
|
DEBUG_FLAGS_LOGICAL_FILTER) {
|
|
gplstLogicalFilterNode->Dump();
|
|
}
|
|
}
|
|
|
|
ENUMFUNC
|
|
CFilterNode::Dump(
|
|
)
|
|
{
|
|
Assert(this);
|
|
// .sf
|
|
if(ulDebugFlags & (DEBUG_FLAGS_FILTER | DEBUG_FLAGS_OBJECT)) {
|
|
if(ulDebugNumber == MAXULONG || ulDebugNumber == nFilter) {
|
|
if(ulDebugFlags & DEBUG_FLAGS_ADDRESS) {
|
|
dprintf("%d: %08x %s\n", nFilter, this, DumpName());
|
|
}
|
|
else {
|
|
dprintf("%d: %s\n", nFilter, DumpName());
|
|
}
|
|
// .sfv
|
|
if(ulDebugFlags & (DEBUG_FLAGS_VERBOSE | DEBUG_FLAGS_OBJECT)) {
|
|
dprintf("FN: %08x DN %08x cPins %08x ulOrder %08x\n",
|
|
this,
|
|
pDeviceNode,
|
|
cPins,
|
|
ulOrder);
|
|
dprintf(" fulType: %08x ", fulType);
|
|
DumpfulType(fulType);
|
|
dprintf("\n ulFlags: %08x ", ulFlags);
|
|
if(ulFlags & FN_FLAGS_RENDER) {
|
|
dprintf("RENDER ");
|
|
}
|
|
if(ulFlags & FN_FLAGS_NO_RENDER) {
|
|
dprintf("NO_RENDER ");
|
|
}
|
|
if(ulFlags & FN_FLAGS_CAPTURE) {
|
|
dprintf("CAPTURE ");
|
|
}
|
|
if(ulFlags & FN_FLAGS_NO_CAPTURE) {
|
|
dprintf("NO_CAPTURE ");
|
|
}
|
|
dprintf("\n");
|
|
if(pwstrDeviceInterface != NULL) {
|
|
dprintf(" %s\n", DumpDeviceInterface());
|
|
}
|
|
PWSTR pwstr;
|
|
|
|
FOR_EACH_LIST_ITEM(&lstwstrDeviceInterfaceMatch, pwstr) {
|
|
dprintf(" pwstrDevice:\n %s\n", DbgUnicode2Sz(pwstr));
|
|
} END_EACH_LIST_ITEM
|
|
|
|
dprintf(" lstLFN: ");
|
|
lstLogicalFilterNode.DumpAddress();
|
|
dprintf("\n lstConnFN:");
|
|
lstConnectedFilterNode.DumpAddress();
|
|
dprintf("\n");
|
|
}
|
|
// .sfp
|
|
if(ulDebugFlags & DEBUG_FLAGS_PIN) {
|
|
lstPinInfo.Dump();
|
|
}
|
|
// .sft
|
|
if(ulDebugFlags & DEBUG_FLAGS_TOPOLOGY) {
|
|
lstTopologyNode.Dump();
|
|
// .sftx
|
|
if(ulDebugFlags & DEBUG_FLAGS_DETAILS) {
|
|
lstTopologyConnection.Dump();
|
|
}
|
|
}
|
|
// .sfl
|
|
if(ulDebugFlags & DEBUG_FLAGS_LOGICAL_FILTER) {
|
|
lstLogicalFilterNode.Dump();
|
|
}
|
|
if(ulDebugFlags &
|
|
(DEBUG_FLAGS_VERBOSE | DEBUG_FLAGS_PIN | DEBUG_FLAGS_TOPOLOGY)) {
|
|
dprintf("\n");
|
|
}
|
|
}
|
|
nFilter++;
|
|
}
|
|
return(STATUS_CONTINUE);
|
|
}
|
|
|
|
#endif
|