VOID EnumSubKeyTest()
{
WCHAR MY_KEY_NAME[] = L"\\Registry\\Machine\\Software";
UNICODE_STRING RegUnicodeString;
HANDLE hRegister;
OBJECT_ATTRIBUTES objectAttributes;
NTSTATUS ntStatus;
ULONG ulSize,i;
UNICODE_STRING uniKeyName;
PKEY_FULL_INFORMATION pfi;
//初始化UNICODE_STRING字符串
RtlInitUnicodeString( &RegUnicodeString, MY_KEY_NAME);
//初始化objectAttributes
InitializeObjectAttributes(&objectAttributes,
&RegUnicodeString,
OBJ_CASE_INSENSITIVE,//对大小写敏感
NULL,
NULL );
//打开注册表
ntStatus = ZwOpenKey( &hRegister,
KEY_ALL_ACCESS,
&objectAttributes);
if (NT_SUCCESS(ntStatus))
{
DbgPrint("Open register successfully\n");
}
//第一次调用ZwQueryKey为了获取KEY_FULL_INFORMATION数据的长度
ZwQueryKey(hRegister,KeyFullInformation,NULL,0,&ulSize);
pfi = (PKEY_FULL_INFORMATION)ExAllocatePool(PagedPool,ulSize);
//第二次调用ZwQueryKey为了获取KEY_FULL_INFORMATION数据的数据
ZwQueryKey(hRegister,KeyFullInformation,pfi,ulSize,&ulSize);
for (i=0;i<pfi->SubKeys;i++)
{
PKEY_BASIC_INFORMATION pbi;
//第一次调用ZwEnumerateKey为了获取KEY_BASIC_INFORMATION数据的长度
ZwEnumerateKey(hRegister,i,KeyBasicInformation,NULL,0,&ulSize);
pbi =(PKEY_BASIC_INFORMATION)ExAllocatePool(PagedPool,ulSize);
//第二次调用ZwEnumerateKey为了获取KEY_BASIC_INFORMATION数据的数据
ZwEnumerateKey(hRegister,i,KeyBasicInformation,pbi,ulSize,&ulSize);
uniKeyName.Length = (USHORT)pbi->NameLength;
uniKeyName.MaximumLength = (USHORT)pbi->NameLength;
uniKeyName.Buffer = pbi->Name;
DbgPrint("The %d sub item name:%wZ\n",i,&uniKeyName);
ExFreePool(pbi);
}
ExFreePool(pfi);
ZwClose(hRegister);
}
NTSTATUS
SampRegEnumerateSubKey(IN HANDLE KeyHandle,
IN ULONG Index,
IN ULONG Length,
OUT LPWSTR Buffer)
{
PKEY_BASIC_INFORMATION KeyInfo = NULL;
ULONG BufferLength = 0;
ULONG ReturnedLength;
NTSTATUS Status;
/* Check if we have a name */
if (Length)
{
/* Allocate a buffer for it */
BufferLength = sizeof(KEY_BASIC_INFORMATION) + Length * sizeof(WCHAR);
KeyInfo = RtlAllocateHeap(RtlGetProcessHeap(), 0, BufferLength);
if (KeyInfo == NULL)
return STATUS_NO_MEMORY;
}
/* Enumerate the key */
Status = ZwEnumerateKey(KeyHandle,
Index,
KeyBasicInformation,
KeyInfo,
BufferLength,
&ReturnedLength);
if (NT_SUCCESS(Status))
{
/* Check if the name fits */
if (KeyInfo->NameLength < (Length * sizeof(WCHAR)))
{
/* Copy it */
RtlMoveMemory(Buffer,
KeyInfo->Name,
KeyInfo->NameLength);
/* Terminate the string */
Buffer[KeyInfo->NameLength / sizeof(WCHAR)] = 0;
}
else
{
/* Otherwise, we ran out of buffer space */
Status = STATUS_BUFFER_OVERFLOW;
}
}
/* Free the buffer and return status */
if (KeyInfo)
RtlFreeHeap(RtlGetProcessHeap(), 0, KeyInfo);
return Status;
}
static SshRegKey
ssh_registry_platform_open_key_by_index(SshRegKey parent_key,
SshRegIndex index)
{
SshRegKey key;
SshRegSize size;
PKEY_NODE_INFORMATION info;
SSH_ASSERT(KeGetCurrentIrql() == PASSIVE_LEVEL);
size = ssh_registry_key_info_get(parent_key, SSH_REG_KEY_INFO_SUBKEY_SIZE);
if (size == 0)
{
SSH_DEBUG(SSH_D_FAIL, ("Failed to get subkey size"));
return NULL;
}
size += sizeof(*info);
info = ssh_calloc(1, size);
if (info == NULL)
{
SSH_DEBUG(SSH_D_FAIL,
("Failed to allocate memory for subkey information"));
return NULL;
}
if (!NT_SUCCESS(ZwEnumerateKey(parent_key, index,
KeyNodeInformation, info, size, &size)))
{
SSH_DEBUG(SSH_D_FAIL,
("Failed to get information about subkey %d", index));
ssh_free(info);
return NULL;
}
key = ssh_registry_key_open(parent_key, NULL, info->Name);
ssh_free(info);
return key;
}
NTSTATUS SetLowerFilters(PUNICODE_STRING szUName,ULONG uFlag)
{
//设置底层过滤函数，完成对注册表的处理
UNICODE_STRING dst,src,ValueName;
HANDLE hRegister,hSubKey;
WCHAR dst_buf[256];
//初始化UNICODE_STRING字符串
RtlInitEmptyUnicodeString(&dst,dst_buf,256*sizeof(WCHAR));
RtlInitUnicodeString(&src,USBSTOR);
RtlCopyUnicodeString(&dst,&src);
RtlAppendUnicodeStringToString(&dst,szUName);
OBJECT_ATTRIBUTES objectAttributes;
//初始化objectAttributes
InitializeObjectAttributes(&objectAttributes,
&dst,
OBJ_CASE_INSENSITIVE,//对大小写敏感
NULL,
NULL );
//打开注册表
NTSTATUS ntStatus = ZwOpenKey( &hRegister,
KEY_ALL_ACCESS,
&objectAttributes);
//打开注册表成功
if (NT_SUCCESS(ntStatus))
{
DbgPrint("Open register successfully\n");
}
RtlInitUnicodeString(&ValueName,L"LowerFilters");
PWCHAR strValue=L"USBFilter";
ULONG ulSize;
//第一次调用ZwQueryKey为了获取KEY_FULL_INFORMATION数据的长度
ZwQueryKey(hRegister,
KeyFullInformation,
NULL,
0,
&ulSize);
PKEY_FULL_INFORMATION pfi =
(PKEY_FULL_INFORMATION)
ExAllocatePool(PagedPool,ulSize);
//第二次调用ZwQueryKey为了获取KEY_FULL_INFORMATION数据的数据
ZwQueryKey(hRegister,
KeyFullInformation,
pfi,
ulSize,
&ulSize);
for (ULONG i=0;i<pfi->SubKeys;i++)
{
//第一次调用ZwEnumerateKey为了获取KEY_BASIC_INFORMATION数据的长度
ZwEnumerateKey(hRegister,
i,
KeyBasicInformation,
NULL,
0,
&ulSize);
PKEY_BASIC_INFORMATION pbi =
(PKEY_BASIC_INFORMATION)
ExAllocatePool(PagedPool,ulSize);
//第二次调用ZwEnumerateKey为了获取KEY_BASIC_INFORMATION数据的数据
ZwEnumerateKey(hRegister,
i,
KeyBasicInformation,
pbi,
ulSize,
&ulSize);
UNICODE_STRING uniKeyName;
uniKeyName.Length =
uniKeyName.MaximumLength =
(USHORT)pbi->NameLength;
uniKeyName.Buffer = pbi->Name;
WCHAR bufTmp[256];
//初始化值
RtlInitEmptyUnicodeString(&src,bufTmp,256*sizeof(WCHAR));
RtlCopyUnicodeString(&src,&dst);
UNICODE_STRING szX;
RtlInitUnicodeString(&szX,L"\\");
RtlAppendUnicodeStringToString(&src,&szX),
RtlAppendUnicodeStringToString(&src,&uniKeyName);
//初始化ObjectAttributes
InitializeObjectAttributes(&objectAttributes,
&src,
OBJ_CASE_INSENSITIVE,//对大小写敏感
NULL,
NULL );
//打开注册表
ZwOpenKey( &hSubKey,
KEY_ALL_ACCESS,
&objectAttributes);
//uFlag为0则删除注册表键值，否则设置注册表键值
if(uFlag==0)
{
ntStatus=ZwDeleteValueKey(hSubKey,&ValueName);
}
else
{
ntStatus=ZwSetValueKey(hSubKey,&ValueName,0,REG_SZ,strValue,wcslen(strValue)*2+2);
}
//成功的话
if (NT_SUCCESS(ntStatus))
{
DbgPrint("Charge Value successfully\n");
}
else
DbgPrint("Charge Value failed!\n");
DbgPrint("The %d sub item name:%wZ\n",i,&src);
//回收内存
ExFreePool(pbi);
//关闭句柄
ZwClose(hSubKey);
}
ExFreePool(pfi);
ZwClose(hRegister);
return STATUS_SUCCESS;
}
void otPlatSettingsWipe(otInstance *otCtx)
{
NT_ASSERT(otCtx);
PMS_FILTER pFilter = otCtxToFilter(otCtx);
LogFuncEntry(DRIVER_DEFAULT);
// Delete all subkeys of 'OpenThread'
if (pFilter->otSettingsRegKey)
{
NTSTATUS status = STATUS_SUCCESS;
ULONG index = 0;
UCHAR keyInfo[sizeof(KEY_BASIC_INFORMATION) + 64];
while (status == STATUS_SUCCESS)
{
ULONG size = sizeof(keyInfo);
status =
ZwEnumerateKey(
pFilter->otSettingsRegKey,
index,
KeyBasicInformation,
keyInfo,
size,
&size);
bool deleted = false;
if (NT_SUCCESS(status))
{
HANDLE subKey = NULL;
OBJECT_ATTRIBUTES attributes;
PKEY_BASIC_INFORMATION pKeyInfo = (PKEY_BASIC_INFORMATION)keyInfo;
UNICODE_STRING subKeyName =
{
(USHORT)pKeyInfo->NameLength,
(USHORT)pKeyInfo->NameLength,
pKeyInfo->Name
};
InitializeObjectAttributes(
&attributes,
&subKeyName,
OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
pFilter->otSettingsRegKey,
NULL);
// Open the sub key
status =
ZwOpenKey(
&subKey,
KEY_ALL_ACCESS,
&attributes);
if (NT_SUCCESS(status))
{
// Delete the key
status = ZwDeleteKey(subKey);
if (!NT_SUCCESS(status))
{
LogError(DRIVER_DEFAULT, "ZwDeleteKey for subkey failed, %!STATUS!", status);
}
else
{
deleted = true;
}
// Close handle
ZwClose(subKey);
}
else
{
LogError(DRIVER_DEFAULT, "ZwOpenKey for subkey failed, %!STATUS!", status);
}
}
// Only increment index if we didn't delete
if (!deleted)
{
index++;
}
}
}
LogFuncExit(DRIVER_DEFAULT);
}
//在注册表子项中设置LowerFilters子项
NTSTATUS SetLowerFilters(PUNICODE_STRING szUName,ULONG uFlag)
{
UNICODE_STRING dst,src,ValueName;
HANDLE hRegister,hSubKey;
WCHAR dst_buf[256];
//初始化UNICODE_STRING字符串
RtlInitEmptyUnicodeString(&dst,dst_buf,256*sizeof(WCHAR));
//初始化src为U盘注册表位置
RtlInitUnicodeString(&src,USBSTOR);
RtlCopyUnicodeString(&dst,&src);
//将U盘名字追加到注册表位置末尾，为选中U盘的实际注册表位置
RtlAppendUnicodeStringToString(&dst,szUName);
OBJECT_ATTRIBUTES objectAttributes;
//初始化objectAttributes
InitializeObjectAttributes(&objectAttributes,
&dst, //文件名
OBJ_CASE_INSENSITIVE,//对大小写敏感
NULL,
NULL );
//打开注册表
NTSTATUS ntStatus = ZwOpenKey( &hRegister, //返回被打开的句柄
KEY_ALL_ACCESS, //打开权限，一般都这么设置
&objectAttributes);
//打开注册表成功
if (NT_SUCCESS(ntStatus))
{
DbgPrint("Open register successfully\n");
}
//要在注册表子项下添加LowerFilters的表项
RtlInitUnicodeString(&ValueName,L"LowerFilters");
//键值设为过滤类名，如果随便设一个会导致U盘连接状态但是不能查看到
PWCHAR strValue=L"UsbFilter";
ULONG ulSize;
//第一次调用ZwQueryKey为了获取KEY_FULL_INFORMATION数据的长度(因为是变长的)
ZwQueryKey(hRegister,
KeyFullInformation, //查询类别，一般都这么设置
NULL,
0,
&ulSize); //返回数据KEY_FULL_INFORMATION的长度
PKEY_FULL_INFORMATION pfi =
(PKEY_FULL_INFORMATION)
ExAllocatePool(PagedPool,ulSize);
//第二次调用ZwQueryKey为了获取KEY_FULL_INFORMATION数据的数据
ZwQueryKey(hRegister,
KeyFullInformation,
pfi, //查询数据的指针
ulSize, //数据长度
&ulSize);
//ZwQueryKey的作用主要就是获得某注册表究竟有多少个子项
//而ZwEnumerateKey的作用主要是针对第几个子项获取该子项的具体信息
for (ULONG i=0;i<pfi->SubKeys;i++)
{
//第一次调用ZwEnumerateKey为了获取KEY_BASIC_INFORMATION数据的长度
ZwEnumerateKey(hRegister,
i,
KeyBasicInformation,
NULL,
0,
&ulSize);
PKEY_BASIC_INFORMATION pbi =
(PKEY_BASIC_INFORMATION)
ExAllocatePool(PagedPool,ulSize);
//第二次调用ZwEnumerateKey为了获取KEY_BASIC_INFORMATION数据的数据
ZwEnumerateKey(hRegister,
i,
KeyBasicInformation,
pbi,
ulSize,
&ulSize);
UNICODE_STRING uniKeyName;
//获取子项名字的长度
uniKeyName.Length =
uniKeyName.MaximumLength =
(USHORT)pbi->NameLength;
uniKeyName.Buffer = pbi->Name;
WCHAR bufTmp[256];
//初始化值
RtlInitEmptyUnicodeString(&src,bufTmp,256*sizeof(WCHAR));
RtlCopyUnicodeString(&src,&dst);
UNICODE_STRING szX;
RtlInitUnicodeString(&szX,L"\\");
RtlAppendUnicodeStringToString(&src,&szX),
//这里就得到注册表子项名字的具体路径名，保存在src中
RtlAppendUnicodeStringToString(&src,&uniKeyName);
//初始化ObjectAttributes
InitializeObjectAttributes(&objectAttributes,
&src,
OBJ_CASE_INSENSITIVE,//对大小写敏感
NULL,
NULL );
//打开注册表
ZwOpenKey( &hSubKey,
KEY_ALL_ACCESS,
&objectAttributes);
//uFlag为0则删除注册表键值(既关写保护)，否则设置注册表键值(既开写保护)
if(uFlag==0)
{
ntStatus=ZwDeleteValueKey(hSubKey,&ValueName);
}
else
{
ntStatus=ZwSetValueKey(hSubKey,&ValueName,0,REG_SZ,strValue,wcslen(strValue)*2+2);
}
//成功的话
if (NT_SUCCESS(ntStatus))
{
DbgPrint("Charge Value successfully\n");
}
else
DbgPrint("Charge Value failed!\n");
DbgPrint("The %d sub item name:%wZ\n",i,&src);
//回收内存
ExFreePool(pbi);
//关闭句柄
ZwClose(hSubKey);
}
ExFreePool(pfi);
ZwClose(hRegister);
return STATUS_SUCCESS;
}
NTSTATUS EnumServices()
{
//_asm int 3
NTSTATUS status = STATUS_SUCCESS;
ULONG SubKeyIndex, ResultLength, ulSize;
HANDLE i, HandleRegKey = NULL;
UNICODE_STRING RegistryKeyName, KeyValue;
UNICODE_STRING KeyName;
OBJECT_ATTRIBUTES ObjectAttributes;
PLIST_ENTRY pListHead = NULL, pListCur = NULL;
PLDR_DATA_TABLE_ENTRY pLdrDataTable = NULL;
PSERVICES_INFO pServicesInfo = NULL,\
pPreServicesInfo = NULL;
PKEY_BASIC_INFORMATION pKeyBasicInfo = NULL;
PKEY_FULL_INFORMATION pKeyFullInfo = NULL;
/************************************************************************/
/*
User-mode Handle Corresponding Object Name
HKEY_LOCAL_MACHINE \Registry\Machine
HKEY_USERS \Registry\User
HKEY_CLASSES_ROOT No kernel-mode equivalent
HKEY_CURRENT_USER No simple kernel-mode equivalent, but see Registry Run-Time Library Routines
*/
/************************************************************************/
WCHAR ServiceRegisterPath[] = L"\\Registry\\Machine\\System\\CurrentControlSet\\Services\\";
//pListHead = ((PLIST_ENTRY)pDriverObj->DriverSection)->Flink;
//pListCur = pListHead;
__try
{
FreePagedLookasideListForServices();
ExInitializePagedLookasideList(&g_PageListServices, NULL, NULL, 0, sizeof(SERVICES_INFO), NULL, 0);
RtlInitUnicodeString(&RegistryKeyName, ServiceRegisterPath);
InitializeObjectAttributes(&ObjectAttributes,
&RegistryKeyName,
OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
NULL, // handle
NULL);
status = ZwOpenKey(&HandleRegKey, KEY_READ, &ObjectAttributes);
// 第一次调用是为了获取需要的长度
ZwQueryKey(HandleRegKey, KeyFullInformation, NULL, 0, &ulSize);
pKeyFullInfo = (PKEY_FULL_INFORMATION)ExAllocatePool(PagedPool, ulSize);
// 第二次调用是为了获取数据
ZwQueryKey(HandleRegKey, KeyFullInformation, pKeyFullInfo, ulSize, &ulSize);
//循环遍历各个子项
for (SubKeyIndex = 0; SubKeyIndex <pKeyFullInfo->SubKeys; SubKeyIndex++)
{
ZwEnumerateKey(HandleRegKey, SubKeyIndex, KeyBasicInformation, NULL, 0, &ulSize);
pKeyBasicInfo = (PKEY_BASIC_INFORMATION)ExAllocatePool(PagedPool, ulSize);
//获取第I个子项的数据
ZwEnumerateKey(HandleRegKey, SubKeyIndex, KeyBasicInformation, pKeyBasicInfo, ulSize, &ulSize);
pServicesInfo = (PSERVICES_INFO)ExAllocateFromPagedLookasideList(&g_PageListServices);
RtlZeroMemory(pServicesInfo, sizeof(SERVICES_INFO));
//服务的名称
RtlCopyMemory(pServicesInfo->lpwzSrvName, pKeyBasicInfo->Name, pKeyBasicInfo->NameLength);
KeyName.Buffer = (PWCH)ExAllocatePool(PagedPool, RegistryKeyName.Length + pKeyBasicInfo->NameLength);
KeyName.Length = RegistryKeyName.Length + pKeyBasicInfo->NameLength;
KeyName.MaximumLength = KeyName.Length;
RtlZeroMemory(KeyName.Buffer, KeyName.Length);
RtlCopyMemory(KeyName.Buffer, RegistryKeyName.Buffer, RegistryKeyName.Length);
RtlCopyMemory((PUCHAR)KeyName.Buffer + RegistryKeyName.Length, pKeyBasicInfo->Name, pKeyBasicInfo->NameLength);
if (!QueryServiceRunType(&KeyName, pServicesInfo))
{
if (NULL != pServicesInfo)
{
ExFreeToPagedLookasideList(&g_PageListServices, pServicesInfo);
pServicesInfo = NULL;
}
}
else
{
pServicesInfo->next = NULL;
if (g_pServicesInfo == NULL)
{
g_pServicesInfo = pServicesInfo;
pPreServicesInfo = pServicesInfo;
}
else
{
pPreServicesInfo->next = pServicesInfo;
pPreServicesInfo = pServicesInfo;
}
}
if (KeyName.Buffer != NULL)
{
ExFreePool(KeyName.Buffer);
KeyName.Buffer = NULL;
}
if (pKeyBasicInfo != NULL)
{
ExFreePool(pKeyBasicInfo);
pKeyBasicInfo = NULL;
}
}
}
__except(EXCEPTION_EXECUTE_HANDLER)
{
FreePagedLookasideListForServices();
KdPrint(("Services:EnumServices failed!"));
status = STATUS_UNSUCCESSFUL;
}
if (NULL != HandleRegKey)
{
ZwClose(HandleRegKey);
HandleRegKey = NULL;
}
if (pKeyBasicInfo != NULL)
{
ExFreePool(pKeyBasicInfo);
pKeyBasicInfo = NULL;
}
if (pKeyFullInfo != NULL)
{
ExFreePool(pKeyFullInfo);
pKeyFullInfo = NULL;
}
return status;
}
/*++
* @name IoGetDeviceInterfaces
* @implemented
*
* Returns a list of device interfaces of a particular device interface class.
* Documented in WDK
*
* @param InterfaceClassGuid
* Points to a class GUID specifying the device interface class
*
* @param PhysicalDeviceObject
* Points to an optional PDO that narrows the search to only the
* device interfaces of the device represented by the PDO
*
* @param Flags
* Specifies flags that modify the search for device interfaces. The
* DEVICE_INTERFACE_INCLUDE_NONACTIVE flag specifies that the list of
* returned symbolic links should contain also disabled device
* interfaces in addition to the enabled ones.
*
* @param SymbolicLinkList
* Points to a character pointer that is filled in on successful return
* with a list of unicode strings identifying the device interfaces
* that match the search criteria. The newly allocated buffer contains
* a list of symbolic link names. Each unicode string in the list is
* null-terminated; the end of the whole list is marked by an additional
* NULL. The caller is responsible for freeing the buffer (ExFreePool)
* when it is no longer needed.
* If no device interfaces match the search criteria, this routine
* returns STATUS_SUCCESS and the string contains a single NULL
* character.
*
* @return Usual NTSTATUS
*
* @remarks None
*
*--*/
NTSTATUS
NTAPI
IoGetDeviceInterfaces(IN CONST GUID *InterfaceClassGuid,
IN PDEVICE_OBJECT PhysicalDeviceObject OPTIONAL,
IN ULONG Flags,
OUT PWSTR *SymbolicLinkList)
{
UNICODE_STRING Control = RTL_CONSTANT_STRING(L"Control");
UNICODE_STRING SymbolicLink = RTL_CONSTANT_STRING(L"SymbolicLink");
HANDLE InterfaceKey = INVALID_HANDLE_VALUE;
HANDLE DeviceKey = INVALID_HANDLE_VALUE;
HANDLE ReferenceKey = INVALID_HANDLE_VALUE;
HANDLE ControlKey = INVALID_HANDLE_VALUE;
PKEY_BASIC_INFORMATION DeviceBi = NULL;
PKEY_BASIC_INFORMATION ReferenceBi = NULL;
PKEY_VALUE_PARTIAL_INFORMATION bip = NULL;
PKEY_VALUE_PARTIAL_INFORMATION PartialInfo;
UNICODE_STRING KeyName;
OBJECT_ATTRIBUTES ObjectAttributes;
BOOLEAN FoundRightPDO = FALSE;
ULONG i = 0, j, Size, NeededLength, ActualLength, LinkedValue;
UNICODE_STRING ReturnBuffer = { 0, 0, NULL };
NTSTATUS Status;
PAGED_CODE();
Status = IopOpenInterfaceKey(InterfaceClassGuid, KEY_ENUMERATE_SUB_KEYS, &InterfaceKey);
if (!NT_SUCCESS(Status))
{
DPRINT("IopOpenInterfaceKey() failed with status 0x%08lx\n", Status);
goto cleanup;
}
/* Enumerate subkeys (i.e. the different device objects) */
while (TRUE)
{
Status = ZwEnumerateKey(
InterfaceKey,
i,
KeyBasicInformation,
NULL,
0,
&Size);
if (Status == STATUS_NO_MORE_ENTRIES)
{
break;
}
else if (!NT_SUCCESS(Status) && Status != STATUS_BUFFER_TOO_SMALL)
{
DPRINT("ZwEnumerateKey() failed with status 0x%08lx\n", Status);
goto cleanup;
}
DeviceBi = ExAllocatePool(PagedPool, Size);
if (!DeviceBi)
{
DPRINT("ExAllocatePool() failed\n");
Status = STATUS_INSUFFICIENT_RESOURCES;
goto cleanup;
}
Status = ZwEnumerateKey(
InterfaceKey,
i++,
KeyBasicInformation,
DeviceBi,
Size,
&Size);
if (!NT_SUCCESS(Status))
{
DPRINT("ZwEnumerateKey() failed with status 0x%08lx\n", Status);
goto cleanup;
}
/* Open device key */
KeyName.Length = KeyName.MaximumLength = (USHORT)DeviceBi->NameLength;
KeyName.Buffer = DeviceBi->Name;
InitializeObjectAttributes(
&ObjectAttributes,
&KeyName,
OBJ_CASE_INSENSITIVE,
InterfaceKey,
NULL);
Status = ZwOpenKey(
&DeviceKey,
KEY_ENUMERATE_SUB_KEYS,
&ObjectAttributes);
if (!NT_SUCCESS(Status))
{
DPRINT("ZwOpenKey() failed with status 0x%08lx\n", Status);
goto cleanup;
}
if (PhysicalDeviceObject)
{
/* Check if we are on the right physical device object,
* by reading the DeviceInstance string
*/
DPRINT1("PhysicalDeviceObject != NULL. Case not implemented.\n");
//FoundRightPDO = TRUE;
Status = STATUS_NOT_IMPLEMENTED;
goto cleanup;
}
/* Enumerate subkeys (ie the different reference strings) */
j = 0;
while (TRUE)
{
Status = ZwEnumerateKey(
DeviceKey,
j,
KeyBasicInformation,
NULL,
0,
&Size);
if (Status == STATUS_NO_MORE_ENTRIES)
{
break;
}
else if (!NT_SUCCESS(Status) && Status != STATUS_BUFFER_TOO_SMALL)
{
DPRINT("ZwEnumerateKey() failed with status 0x%08lx\n", Status);
goto cleanup;
}
ReferenceBi = ExAllocatePool(PagedPool, Size);
if (!ReferenceBi)
{
DPRINT("ExAllocatePool() failed\n");
Status = STATUS_INSUFFICIENT_RESOURCES;
goto cleanup;
}
Status = ZwEnumerateKey(
DeviceKey,
j++,
KeyBasicInformation,
ReferenceBi,
Size,
&Size);
if (!NT_SUCCESS(Status))
{
DPRINT("ZwEnumerateKey() failed with status 0x%08lx\n", Status);
goto cleanup;
}
KeyName.Length = KeyName.MaximumLength = (USHORT)ReferenceBi->NameLength;
KeyName.Buffer = ReferenceBi->Name;
if (RtlEqualUnicodeString(&KeyName, &Control, TRUE))
{
/* Skip Control subkey */
goto NextReferenceString;
}
/* Open reference key */
InitializeObjectAttributes(
&ObjectAttributes,
&KeyName,
OBJ_CASE_INSENSITIVE,
DeviceKey,
NULL);
Status = ZwOpenKey(
&ReferenceKey,
KEY_QUERY_VALUE,
&ObjectAttributes);
if (!NT_SUCCESS(Status))
{
DPRINT("ZwOpenKey() failed with status 0x%08lx\n", Status);
goto cleanup;
}
if (!(Flags & DEVICE_INTERFACE_INCLUDE_NONACTIVE))
{
/* We have to check if the interface is enabled, by
* reading the Linked value in the Control subkey
*/
InitializeObjectAttributes(
&ObjectAttributes,
&Control,
OBJ_CASE_INSENSITIVE,
ReferenceKey,
NULL);
Status = ZwOpenKey(
&ControlKey,
KEY_QUERY_VALUE,
&ObjectAttributes);
if (Status == STATUS_OBJECT_NAME_NOT_FOUND)
{
/* That's OK. The key doesn't exist (yet) because
* the interface is not activated.
*/
goto NextReferenceString;
}
else if (!NT_SUCCESS(Status))
{
DPRINT1("ZwOpenKey() failed with status 0x%08lx\n", Status);
goto cleanup;
}
RtlInitUnicodeString(&KeyName, L"Linked");
Status = ZwQueryValueKey(ControlKey,
&KeyName,
KeyValuePartialInformation,
NULL,
0,
&NeededLength);
if (Status == STATUS_BUFFER_TOO_SMALL)
{
ActualLength = NeededLength;
PartialInfo = ExAllocatePool(NonPagedPool, ActualLength);
if (!PartialInfo)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
goto cleanup;
}
Status = ZwQueryValueKey(ControlKey,
&KeyName,
KeyValuePartialInformation,
PartialInfo,
ActualLength,
&NeededLength);
if (!NT_SUCCESS(Status))
{
DPRINT1("ZwQueryValueKey #2 failed (%x)\n", Status);
ExFreePool(PartialInfo);
goto cleanup;
}
if (PartialInfo->Type != REG_DWORD || PartialInfo->DataLength != sizeof(ULONG))
{
DPRINT1("Bad registry read\n");
ExFreePool(PartialInfo);
goto cleanup;
}
RtlCopyMemory(&LinkedValue,
PartialInfo->Data,
PartialInfo->DataLength);
ExFreePool(PartialInfo);
if (LinkedValue == 0)
{
/* This interface isn't active */
goto NextReferenceString;
}
}
else
{
DPRINT1("ZwQueryValueKey #1 failed (%x)\n", Status);
goto cleanup;
}
}
/* Read the SymbolicLink string and add it into SymbolicLinkList */
Status = ZwQueryValueKey(
ReferenceKey,
&SymbolicLink,
KeyValuePartialInformation,
NULL,
0,
&Size);
if (!NT_SUCCESS(Status) && Status != STATUS_BUFFER_TOO_SMALL)
{
DPRINT("ZwQueryValueKey() failed with status 0x%08lx\n", Status);
goto cleanup;
}
bip = ExAllocatePool(PagedPool, Size);
if (!bip)
{
DPRINT("ExAllocatePool() failed\n");
Status = STATUS_INSUFFICIENT_RESOURCES;
goto cleanup;
}
Status = ZwQueryValueKey(
ReferenceKey,
&SymbolicLink,
KeyValuePartialInformation,
bip,
Size,
&Size);
if (!NT_SUCCESS(Status))
{
DPRINT("ZwQueryValueKey() failed with status 0x%08lx\n", Status);
goto cleanup;
}
else if (bip->Type != REG_SZ)
{
DPRINT("Unexpected registry type 0x%lx (expected 0x%lx)\n", bip->Type, REG_SZ);
Status = STATUS_UNSUCCESSFUL;
goto cleanup;
}
else if (bip->DataLength < 5 * sizeof(WCHAR))
{
DPRINT("Registry string too short (length %lu, expected %lu at least)\n", bip->DataLength, 5 * sizeof(WCHAR));
Status = STATUS_UNSUCCESSFUL;
goto cleanup;
}
KeyName.Length = KeyName.MaximumLength = (USHORT)bip->DataLength;
KeyName.Buffer = (PWSTR)bip->Data;
/* Fixup the prefix (from "\\?\") */
RtlCopyMemory(KeyName.Buffer, L"\\??\\", 4 * sizeof(WCHAR));
/* Add new symbolic link to symbolic link list */
if (ReturnBuffer.Length + KeyName.Length + sizeof(WCHAR) > ReturnBuffer.MaximumLength)
{
PWSTR NewBuffer;
ReturnBuffer.MaximumLength = (USHORT)max(2 * ReturnBuffer.MaximumLength,
(USHORT)(ReturnBuffer.Length +
KeyName.Length +
2 * sizeof(WCHAR)));
NewBuffer = ExAllocatePool(PagedPool, ReturnBuffer.MaximumLength);
if (!NewBuffer)
{
DPRINT("ExAllocatePool() failed\n");
Status = STATUS_INSUFFICIENT_RESOURCES;
goto cleanup;
}
if (ReturnBuffer.Buffer)
{
RtlCopyMemory(NewBuffer, ReturnBuffer.Buffer, ReturnBuffer.Length);
ExFreePool(ReturnBuffer.Buffer);
}
ReturnBuffer.Buffer = NewBuffer;
}
DPRINT("Adding symbolic link %wZ\n", &KeyName);
Status = RtlAppendUnicodeStringToString(&ReturnBuffer, &KeyName);
if (!NT_SUCCESS(Status))
{
DPRINT("RtlAppendUnicodeStringToString() failed with status 0x%08lx\n", Status);
goto cleanup;
}
/* RtlAppendUnicodeStringToString added a NULL at the end of the
* destination string, but didn't increase the Length field.
* Do it for it.
*/
ReturnBuffer.Length += sizeof(WCHAR);
NextReferenceString:
ExFreePool(ReferenceBi);
ReferenceBi = NULL;
if (bip)
ExFreePool(bip);
bip = NULL;
if (ReferenceKey != INVALID_HANDLE_VALUE)
{
ZwClose(ReferenceKey);
ReferenceKey = INVALID_HANDLE_VALUE;
}
if (ControlKey != INVALID_HANDLE_VALUE)
{
ZwClose(ControlKey);
ControlKey = INVALID_HANDLE_VALUE;
}
}
if (FoundRightPDO)
{
/* No need to go further, as we already have found what we searched */
break;
}
ExFreePool(DeviceBi);
DeviceBi = NULL;
ZwClose(DeviceKey);
DeviceKey = INVALID_HANDLE_VALUE;
}
/* Add final NULL to ReturnBuffer */
NT_ASSERT(ReturnBuffer.Length <= ReturnBuffer.MaximumLength);
if (ReturnBuffer.Length >= ReturnBuffer.MaximumLength)
{
PWSTR NewBuffer;
ReturnBuffer.MaximumLength += sizeof(WCHAR);
NewBuffer = ExAllocatePool(PagedPool, ReturnBuffer.MaximumLength);
if (!NewBuffer)
{
DPRINT("ExAllocatePool() failed\n");
Status = STATUS_INSUFFICIENT_RESOURCES;
goto cleanup;
}
if (ReturnBuffer.Buffer)
{
RtlCopyMemory(NewBuffer, ReturnBuffer.Buffer, ReturnBuffer.Length);
ExFreePool(ReturnBuffer.Buffer);
}
ReturnBuffer.Buffer = NewBuffer;
}
ReturnBuffer.Buffer[ReturnBuffer.Length / sizeof(WCHAR)] = UNICODE_NULL;
*SymbolicLinkList = ReturnBuffer.Buffer;
Status = STATUS_SUCCESS;
cleanup:
if (!NT_SUCCESS(Status) && ReturnBuffer.Buffer)
ExFreePool(ReturnBuffer.Buffer);
if (InterfaceKey != INVALID_HANDLE_VALUE)
ZwClose(InterfaceKey);
if (DeviceKey != INVALID_HANDLE_VALUE)
ZwClose(DeviceKey);
if (ReferenceKey != INVALID_HANDLE_VALUE)
ZwClose(ReferenceKey);
if (ControlKey != INVALID_HANDLE_VALUE)
ZwClose(ControlKey);
if (DeviceBi)
ExFreePool(DeviceBi);
if (ReferenceBi)
ExFreePool(ReferenceBi);
if (bip)
ExFreePool(bip);
return Status;
}
NTSTATUS
RegistryEnumerateSubKeys(
IN HANDLE Key,
IN NTSTATUS (*Callback)(PVOID, HANDLE, PCHAR),
IN PVOID Context
)
{
ULONG Size;
NTSTATUS status;
PKEY_FULL_INFORMATION Full;
PKEY_BASIC_INFORMATION Basic;
ULONG Index;
status = ZwQueryKey(Key,
KeyFullInformation,
NULL,
0,
&Size);
if (status != STATUS_BUFFER_OVERFLOW &&
status != STATUS_BUFFER_TOO_SMALL)
goto fail1;
#pragma prefast(suppress:6102)
Full = __RegistryAllocate(Size);
status = STATUS_NO_MEMORY;
if (Full == NULL)
goto fail2;
status = ZwQueryKey(Key,
KeyFullInformation,
Full,
Size,
&Size);
if (!NT_SUCCESS(status))
goto fail3;
Size = FIELD_OFFSET(KEY_BASIC_INFORMATION, Name) +
Full->MaxNameLen;
Basic = __RegistryAllocate(Size);
status = STATUS_NO_MEMORY;
if (Basic == NULL)
goto fail4;
for (Index = 0; Index < Full->SubKeys; Index++) {
UNICODE_STRING Unicode;
ANSI_STRING Ansi;
status = ZwEnumerateKey(Key,
Index,
KeyBasicInformation,
Basic,
Size,
&Size);
if (!NT_SUCCESS(status))
goto fail5;
Unicode.MaximumLength = (USHORT)Basic->NameLength;
Unicode.Buffer = Basic->Name;
Unicode.Length = (USHORT)Basic->NameLength;
Ansi.MaximumLength = (USHORT)((Basic->NameLength / sizeof (WCHAR)) + sizeof (CHAR));
Ansi.Buffer = __RegistryAllocate(Ansi.MaximumLength);
status = STATUS_NO_MEMORY;
if (Ansi.Buffer == NULL)
goto fail6;
status = RtlUnicodeStringToAnsiString(&Ansi, &Unicode, FALSE);
ASSERT(NT_SUCCESS(status));
Ansi.Length = (USHORT)(strlen(Ansi.Buffer) * sizeof (CHAR));
status = Callback(Context, Key, Ansi.Buffer);
__RegistryFree(Ansi.Buffer);
Ansi.Buffer = NULL;
if (!NT_SUCCESS(status))
goto fail7;
}
__RegistryFree(Basic);
__RegistryFree(Full);
return STATUS_SUCCESS;
fail7:
fail6:
fail5:
__RegistryFree(Basic);
fail4:
fail3:
__RegistryFree(Full);
fail2:
fail1:
return status;
}
///////////////////////////////////////////////////////////////////////////////////////////////////
// testdrvRegEnumerateKeys
// Enumerates and print names of subkeys using a given registry key handle.
//
// Arguments:
// IN RegKeyHandle
// Handle to root key
//
// Return Value:
// none
//
VOID testdrvRegEnumerateKeys(
IN HANDLE RegKeyHandle
)
{
NTSTATUS status;
ULONG index;
PKEY_BASIC_INFORMATION regBuffer;
PWCHAR nameBuffer;
ULONG length;
status = STATUS_SUCCESS;
index = 0;
regBuffer = NULL;
nameBuffer = NULL;
while (status != STATUS_NO_MORE_ENTRIES)
{
// Get the buffer size necessary
status = ZwEnumerateKey(
RegKeyHandle,
index,
KeyBasicInformation,
NULL,
0,
&length
);
if ((status != STATUS_BUFFER_TOO_SMALL) && (status != STATUS_BUFFER_OVERFLOW))
{
if (status != STATUS_NO_MORE_ENTRIES)
{
testdrvDebugPrint(DBG_PNP, DBG_INFO, __FUNCTION__ ": ZwEnumerateKey failed %x", status);
}
else
{
testdrvDebugPrint(DBG_PNP, DBG_INFO, __FUNCTION__ ": Enumerated %d keys", index);
}
break;
}
regBuffer =
(PKEY_BASIC_INFORMATION)ExAllocatePoolWithTag(NonPagedPool, length, TESTDRV_POOL_TAG);
if (regBuffer == NULL)
{
continue;
}
// Now actually attempt to get subkey info
status = ZwEnumerateKey(
RegKeyHandle,
index,
KeyBasicInformation,
regBuffer,
length,
&length
);
if (!NT_SUCCESS(status))
{
testdrvDebugPrint(DBG_PNP, DBG_INFO, __FUNCTION__ ": ZwEnumerateKey failed %x", status);
// Free our temporary storage
ExFreePool(regBuffer);
continue;
}
// Allocate a buffer for the display name
nameBuffer = (PWCHAR)ExAllocatePoolWithTag(
PagedPool,
regBuffer->NameLength + sizeof(WCHAR),
TESTDRV_POOL_TAG
);
if (nameBuffer == NULL)
{
// Free our temporary storage
ExFreePool(regBuffer);
continue;
}
// NULL terminate the string
RtlZeroMemory(nameBuffer, regBuffer->NameLength + sizeof(WCHAR));
// Copy the name over
RtlCopyMemory(nameBuffer, regBuffer->Name, regBuffer->NameLength);
testdrvDebugPrint(DBG_PNP, DBG_INFO, __FUNCTION__ ": ZwEnumerateKey returned %S", nameBuffer);
// Free both buffers
ExFreePool(regBuffer);
ExFreePool(nameBuffer);
// Increment our index
++index;
}
return;
}
NTSTATUS
DrDeleteAllSubKeys(
HANDLE ParentKey
) {
NTSTATUS status;
PKEY_BASIC_INFORMATION keyInfo;
ULONG outLength;
ULONG idxKey;
OBJECT_ATTRIBUTES objectAttributes;
UNICODE_STRING objectName;
HANDLE childKey;
keyInfo = (PKEY_BASIC_INFORMATION)ExAllocatePoolWithTag(PagedPool, 512, DEVREG_POOTAG_KEYINFO);
if(!keyInfo) {
KDPrint(1, ("ExAllocatePoolWithTag(KEY_BASIC_INFORMATION) failed.\n"));
return STATUS_INSUFFICIENT_RESOURCES;
}
status = STATUS_SUCCESS;
for(idxKey = 0 ; idxKey < DEVREG_MAX_REGISTRY_KEY; idxKey ++) {
status = ZwEnumerateKey(
ParentKey,
idxKey,
KeyBasicInformation,
keyInfo,
512,
&outLength
);
if(status == STATUS_NO_MORE_ENTRIES) {
KDPrint(1, ("No more entries.\n"));
status = STATUS_SUCCESS;
break;
}
if(status != STATUS_SUCCESS) {
ASSERT(status != STATUS_BUFFER_OVERFLOW && status != STATUS_BUFFER_TOO_SMALL);
KDPrint(1, ("ZwEnumerateKey() failed. NTSTATUS:%08lx\n", status));
ExFreePool(keyInfo);
return STATUS_SUCCESS;
}
//
// Open a sub key
//
objectName.Length = objectName.MaximumLength = (USHORT)keyInfo->NameLength;
objectName.Buffer = keyInfo->Name;
InitializeObjectAttributes( &objectAttributes,
&objectName,
OBJ_KERNEL_HANDLE,
ParentKey,
NULL
);
status = ZwOpenKey(&childKey, KEY_ALL_ACCESS, &objectAttributes);
if(!NT_SUCCESS(status)) {
KDPrint(1, ("ZwOpenKey() failed. NTSTATUS:%08lx\n", status));
continue;
}
//
// Delete all subkeys
//
status = DrDeleteAllSubKeys(childKey);
if(!NT_SUCCESS(status)) {
KDPrint(1, ("Recursive DrDeleteAllSubKeys() failed. NTSTATUS:%08lx\n", status));
ZwClose(childKey);
continue;
}
//
// Delete NDAS device instance.
//
status = ZwDeleteKey(childKey);
#if DBG
if(!NT_SUCCESS(status)) {
KDPrint(1, ("ZwDeleteKey() failed. NTSTATUS:%08lx\n", status));
}
#endif
ZwClose(childKey);
//
// One key was deleted, decrement key index.
//
idxKey--;
}
ExFreePool(keyInfo);
return STATUS_SUCCESS;
}
NTSTATUS NTAPI
IopQueryBusDescription(
PIO_QUERY Query,
UNICODE_STRING RootKey,
HANDLE RootKeyHandle,
PULONG Bus,
BOOLEAN KeyIsRoot)
{
NTSTATUS Status;
ULONG BusLoop;
UNICODE_STRING SubRootRegName;
UNICODE_STRING BusString;
UNICODE_STRING SubBusString;
ULONG LenBasicInformation = 0;
ULONG LenFullInformation;
ULONG LenKeyFullInformation;
ULONG LenKey;
HANDLE SubRootKeyHandle;
PKEY_FULL_INFORMATION FullInformation;
PKEY_BASIC_INFORMATION BasicInformation = NULL;
OBJECT_ATTRIBUTES ObjectAttributes;
PKEY_VALUE_FULL_INFORMATION BusInformation[3] = {NULL, NULL, NULL};
/* How much buffer space */
Status = ZwQueryKey(RootKeyHandle, KeyFullInformation, NULL, 0, &LenFullInformation);
if (!NT_SUCCESS(Status) && Status != STATUS_BUFFER_TOO_SMALL && Status != STATUS_BUFFER_OVERFLOW)
return Status;
/* Allocate it */
FullInformation = ExAllocatePoolWithTag(PagedPool, LenFullInformation, TAG_IO_RESOURCE);
if (!FullInformation)
return STATUS_NO_MEMORY;
/* Get the Information */
Status = ZwQueryKey(RootKeyHandle, KeyFullInformation, FullInformation, LenFullInformation, &LenFullInformation);
/* Everything was fine */
if (NT_SUCCESS(Status))
{
/* Buffer needed for all the keys under this one */
LenBasicInformation = FullInformation->MaxNameLen + sizeof(KEY_BASIC_INFORMATION);
/* Allocate it */
BasicInformation = ExAllocatePoolWithTag(PagedPool, LenBasicInformation, TAG_IO_RESOURCE);
}
/* Deallocate the old Buffer */
ExFreePoolWithTag(FullInformation, TAG_IO_RESOURCE);
/* Try to find a Bus */
for (BusLoop = 0; NT_SUCCESS(Status); BusLoop++)
{
/* Bus parameter was passed and number was matched */
if ((Query->BusNumber) && (*(Query->BusNumber)) == *Bus) break;
/* Enumerate the Key */
Status = ZwEnumerateKey(
RootKeyHandle,
BusLoop,
KeyBasicInformation,
BasicInformation,
LenBasicInformation,
&LenKey);
/* Everything enumerated */
if (!NT_SUCCESS(Status)) break;
/* What Bus are we going to go down? (only check if this is a Root Key) */
if (KeyIsRoot)
{
if (wcsncmp(BasicInformation->Name, L"MultifunctionAdapter", BasicInformation->NameLength / 2) &&
wcsncmp(BasicInformation->Name, L"EisaAdapter", BasicInformation->NameLength / 2) &&
wcsncmp(BasicInformation->Name, L"TcAdapter", BasicInformation->NameLength / 2))
{
/* Nothing found, check next */
continue;
}
}
/* Enumerate the Bus. */
BusString.Buffer = BasicInformation->Name;
BusString.Length = (USHORT)BasicInformation->NameLength;
BusString.MaximumLength = (USHORT)BasicInformation->NameLength;
/* Open a handle to the Root Registry Key */
InitializeObjectAttributes(
&ObjectAttributes,
&BusString,
OBJ_CASE_INSENSITIVE,
RootKeyHandle,
NULL);
Status = ZwOpenKey(&SubRootKeyHandle, KEY_READ, &ObjectAttributes);
/* Go on if we can't */
if (!NT_SUCCESS(Status)) continue;
/* Key opened. Create the path */
SubRootRegName = RootKey;
RtlAppendUnicodeToString(&SubRootRegName, L"\\");
RtlAppendUnicodeStringToString(&SubRootRegName, &BusString);
if (!KeyIsRoot)
{
/* Parsing a SubBus-key */
int SubBusLoop;
PWSTR Strings[3] = {
L"Identifier",
L"Configuration Data",
L"Component Information"};
for (SubBusLoop = 0; SubBusLoop < 3; SubBusLoop++)
{
/* Identifier String First */
RtlInitUnicodeString(&SubBusString, Strings[SubBusLoop]);
/* How much buffer space */
ZwQueryValueKey(SubRootKeyHandle, &SubBusString, KeyValueFullInformation, NULL, 0, &LenKeyFullInformation);
/* Allocate it */
BusInformation[SubBusLoop] = ExAllocatePoolWithTag(PagedPool, LenKeyFullInformation, TAG_IO_RESOURCE);
/* Get the Information */
Status = ZwQueryValueKey(SubRootKeyHandle, &SubBusString, KeyValueFullInformation, BusInformation[SubBusLoop], LenKeyFullInformation, &LenKeyFullInformation);
}
if (NT_SUCCESS(Status))
{
/* Do we have something */
if (BusInformation[1] != NULL &&
BusInformation[1]->DataLength != 0 &&
/* Does it match what we want? */
(((PCM_FULL_RESOURCE_DESCRIPTOR)((ULONG_PTR)BusInformation[1] + BusInformation[1]->DataOffset))->InterfaceType == *(Query->BusType)))
{
/* Found a bus */
(*Bus)++;
/* Is it the bus we wanted */
if (Query->BusNumber == NULL || *(Query->BusNumber) == *Bus)
{
/* If we don't want Controller Information, we're done... call the callback */
if (Query->ControllerType == NULL)
{
Status = Query->CalloutRoutine(
Query->Context,
&SubRootRegName,
*(Query->BusType),
*Bus,
BusInformation,
0,
0,
NULL,
0,
0,
NULL);
} else {
/* We want Controller Info...get it */
Status = IopQueryDeviceDescription(Query, SubRootRegName, RootKeyHandle, *Bus, (PKEY_VALUE_FULL_INFORMATION*)BusInformation);
}
}
}
}
/* Free the allocated memory */
for (SubBusLoop = 0; SubBusLoop < 3; SubBusLoop++)
{
if (BusInformation[SubBusLoop])
{
ExFreePoolWithTag(BusInformation[SubBusLoop], TAG_IO_RESOURCE);
BusInformation[SubBusLoop] = NULL;
}
}
/* Exit the Loop if we found the bus */
if (Query->BusNumber != NULL && *(Query->BusNumber) == *Bus)
{
ZwClose(SubRootKeyHandle);
SubRootKeyHandle = NULL;
continue;
}
}
/* Enumerate the buses below us recursively if we haven't found the bus yet */
Status = IopQueryBusDescription(Query, SubRootRegName, SubRootKeyHandle, Bus, !KeyIsRoot);
/* Everything enumerated */
if (Status == STATUS_NO_MORE_ENTRIES) Status = STATUS_SUCCESS;
ZwClose(SubRootKeyHandle);
SubRootKeyHandle = NULL;
}
/* Free the last remaining Allocated Memory */
if (BasicInformation)
ExFreePoolWithTag(BasicInformation, TAG_IO_RESOURCE);
return Status;
}
VOID
NdisOpenConfigurationKeyByIndex(
OUT PNDIS_STATUS Status,
IN PNDIS_HANDLE ConfigurationHandle,
IN ULONG Index,
OUT PNDIS_STRING KeyName,
OUT PNDIS_HANDLE KeyHandle
)
/*++
Routine Description:
This routine is used to open a subkey relative to the configuration handle.
Arguments:
Status - Returns the status of the request.
ConfigurationHandle - Handle to an already open section of the registry
Index - Index of the sub-key to open
KeyName - Placeholder for the name of subkey being opened
KeyHandle - Placeholder for the handle to the sub-key.
Return Value:
None.
--*/
{
PNDIS_CONFIGURATION_HANDLE ConfigHandle = (PNDIS_CONFIGURATION_HANDLE)ConfigurationHandle;
HANDLE Handle;
OBJECT_ATTRIBUTES ObjAttr;
UNICODE_STRING KeyPath, Services, AbsolutePath;
PKEY_BASIC_INFORMATION InfoBuf = NULL;
ULONG Len;
ASSERT (KeGetCurrentIrql() < DISPATCH_LEVEL);
*KeyHandle = NULL;
do
{
//
// Open the current key and lookup the Nth subkey. But first conver the service relative
// path to absolute since this is what ZwOpenKey expects.
//
RtlInitUnicodeString(&KeyPath, ConfigHandle->KeyQueryTable[3].Name);
RtlInitUnicodeString(&Services, L"\\Registry\\Machine\\System\\CurrentControlSet\\Services\\");
AbsolutePath.MaximumLength = KeyPath.Length + Services.Length + sizeof(WCHAR);
AbsolutePath.Buffer = (PWSTR)ALLOC_FROM_POOL(AbsolutePath.MaximumLength, NDIS_TAG_DEFAULT);
if (AbsolutePath.Buffer == NULL)
{
break;
}
NdisMoveMemory(AbsolutePath.Buffer, Services.Buffer, Services.Length);
AbsolutePath.Length = Services.Length;
RtlAppendUnicodeStringToString(&AbsolutePath, &KeyPath);
InitializeObjectAttributes(&ObjAttr,
&AbsolutePath,
OBJ_CASE_INSENSITIVE,
NULL,
NULL);
*Status = ZwOpenKey(&Handle,
GENERIC_READ | MAXIMUM_ALLOWED,
&ObjAttr);
if (*Status != STATUS_SUCCESS)
{
break;
}
//
// Allocate memory for the call to ZwEnumerateKey
//
Len = sizeof(KEY_BASIC_INFORMATION) + 256;
InfoBuf = (PKEY_BASIC_INFORMATION)ALLOC_FROM_POOL(Len, NDIS_TAG_DEFAULT);
if (InfoBuf == NULL)
{
ZwClose(Handle);
*Status = NDIS_STATUS_RESOURCES;
break;
}
//
// Get the Index(th) key, if it exists
//
*Status = ZwEnumerateKey(Handle,
Index,
KeyValueBasicInformation,
InfoBuf,
Len,
&Len);
ZwClose(Handle);
if (*Status == STATUS_SUCCESS)
{
//
// This worked. Now simply pick up the name and do a NdisOpenConfigurationKeyByName on it.
//
KeyPath.Length = KeyPath.MaximumLength = (USHORT)InfoBuf->NameLength;
KeyPath.Buffer = InfoBuf->Name;
NdisOpenConfigurationKeyByName(Status,
ConfigurationHandle,
&KeyPath,
KeyHandle);
if (*Status == NDIS_STATUS_SUCCESS)
{
PNDIS_CONFIGURATION_HANDLE NewHandle = *(PNDIS_CONFIGURATION_HANDLE *)KeyHandle;
//
// The path in the new handle has the name of the key. Extract it and return to caller
//
RtlInitUnicodeString(KeyName, NewHandle->KeyQueryTable[3].Name);
KeyName->Buffer = (PWSTR)((PUCHAR)KeyName->Buffer + KeyName->Length - KeyPath.Length);
KeyName->Length = KeyPath.Length;
KeyName->MaximumLength = KeyPath.MaximumLength;
}
}
} while (FALSE);
if (AbsolutePath.Buffer != NULL)
{
FREE_POOL(AbsolutePath.Buffer);
}
if (InfoBuf != NULL)
{
FREE_POOL(InfoBuf);
}
}
//-.-.-.-.-.-.-.-.-.-.-.-.-.-.- DriverParametersSubKeyDelete -.-.-.-.-.-.-.-.-.-.-.-.-.-.-
//
NTSTATUS DriverParametersSubKeyDelete(
WDFDRIVER Driver,
DtString* pKeyName)
{
NTSTATUS NtStatus = STATUS_SUCCESS;
DtStringChar* pRegistryPath;
DtString RegistryPath;
DtString FullKeyName;
UInt PathLength;
HANDLE hKey;
OBJECT_ATTRIBUTES ObjectAttributes;
KEY_BASIC_INFORMATION* pKeyInfo;
ULONG Size;
ULONG ResultSize;
Int Index;
DT_STRING_DECL(ParamItemName, "\\Parameters\\");
DT_ASSERT(KeGetCurrentIrql()<=PASSIVE_LEVEL);
// Build the full path
pRegistryPath = WdfDriverGetRegistryPath(Driver);
PathLength = wcslen(pRegistryPath);
DT_STRING_INIT_CONST(RegistryPath, pRegistryPath, PathLength);
// Allocate struct for key information result
Size = sizeof(KEY_BASIC_INFORMATION)+100;
pKeyInfo = DtMemAllocPool(DtPoolNonPaged, Size, SAL_TAG);
if (pKeyInfo == NULL)
return STATUS_NO_MEMORY;
// Allocate a new DtString buffer for the complete path inclusive a '\0' character
// and extra '\\'
if (!DT_SUCCESS(DtStringAlloc(&FullKeyName, PathLength+
DtStringGetStringLength(&ParamItemName)+
DtStringGetStringLength(pKeyName)+
100+1+1)))
{
DtMemFreePool(pKeyInfo, SAL_TAG);
return STATUS_NO_MEMORY;
}
DtStringAppendDtString(&FullKeyName, &RegistryPath);
DtStringAppendDtString(&FullKeyName, &ParamItemName);
DtStringAppendDtString(&FullKeyName, pKeyName);
// Initialize key to open
InitializeObjectAttributes(&ObjectAttributes, &FullKeyName, OBJ_KERNEL_HANDLE, NULL,
NULL);
NtStatus = ZwOpenKey(&hKey, KEY_ENUMERATE_SUB_KEYS , &ObjectAttributes);
if (NT_SUCCESS(NtStatus))
{
Index = 0;
NtStatus = STATUS_SUCCESS;
// Enumerate all keys
while (NtStatus != STATUS_NO_MORE_ENTRIES)
{
NtStatus = ZwEnumerateKey(hKey, Index, KeyBasicInformation, pKeyInfo, Size,
&ResultSize);
if (NT_SUCCESS(NtStatus))
{
DtString SubKey;
// Build key to delete
pKeyInfo->Name[pKeyInfo->NameLength/2] = L'\0';
DT_STRING_INIT_CONST(SubKey, pKeyInfo->Name, ((USHORT)pKeyInfo->NameLength/2));
DtStringClear(&FullKeyName);
DtStringAppendDtString(&FullKeyName, pKeyName);
DtStringAppendChars(&FullKeyName, "\\");
DtStringAppendDtString(&FullKeyName, &SubKey);
DtDbgOut(MAX, SAL, "Delete SubKey %S.", FullKeyName.Buffer);
NtStatus = DriverParametersKeyDelete(Driver, &FullKeyName);
if (!NT_SUCCESS(NtStatus))
DtDbgOut(ERR, SAL, "Error deleting SubKey %S. Error: %x",
FullKeyName.Buffer, NtStatus);
}
// In case deletion failed, skip this entry
if (!NT_SUCCESS(NtStatus))
Index++;
}
NtStatus = ZwDeleteKey(hKey);
ZwClose(hKey);
}
DtMemFreePool(pKeyInfo, SAL_TAG);
DtStringFree(&FullKeyName);
return NtStatus;
}
//////////////////////////////////////////////////////////////////////////
//如果提供的缓存区不够大，返回STATUS_BUFFER_TOO_SMALL
NTSTATUS GetAdapterInfo(ADAPTER_INFOEX *pAIEX, PULONG Size2Take)
{
NTSTATUS status;
HANDLE hAdapter = NULL;
PKEY_FULL_INFORMATION pKeyFullInfo = NULL;
ULONG uTmp;
ULONG uCounter=0;
do
{
// UNICODE_STRING ustrAdapter = UNICODE_STRING_CONST(L";\\Registry\\Machine\\System\\CurrentControlSet\\Control\\Network\\{4D36E972-E325-11CE-BFC1-08002BE10318}";);
UNICODE_STRING ustrAdapter = UNICODE_STRING_CONST(L"\\Registry\\Machine\\System\\CurrentControlSet\\Services\\Tcpip\\Parameters\\Adapters");
OBJECT_ATTRIBUTES ObjAttrib;
ULONG nSize;
ULONG nIndex;
InitializeObjectAttributes(&ObjAttrib, &ustrAdapter, OBJ_CASE_INSENSITIVE, NULL, NULL);
status = ZwOpenKey(&hAdapter, KEY_READ, &ObjAttrib);
if (!NT_SUCCESS(status))
{
//DbgPrintEx(DPFLTR_IHVBUS_ID ,DPFLTR_ERROR_LEVEL,"ZwOpenKey Error: %x\n", status);
break;
}
ZwQueryKey(hAdapter, KeyFullInformation, NULL, 0, &nSize);
pKeyFullInfo = (PKEY_FULL_INFORMATION)kmalloc( nSize);
if (!pKeyFullInfo)
{
status = STATUS_INSUFFICIENT_RESOURCES;
break;
}
status = ZwQueryKey(hAdapter, KeyFullInformation, pKeyFullInfo, nSize, &nSize);
if (!NT_SUCCESS(status))
{
//DbgPrintEx(DPFLTR_IHVBUS_ID ,DPFLTR_ERROR_LEVEL,";ZwQueryKey Error: %x\n", status);
break;
}
if (pAIEX==NULL)
{
status = STATUS_BUFFER_TOO_SMALL;
*Size2Take = pKeyFullInfo->SubKeys*sizeof(ADAPTER_INFO)+sizeof(ULONG);
break;
}
for (nIndex = 0; nIndex< pKeyFullInfo->SubKeys; nIndex ++)
{
PKEY_BASIC_INFORMATION pKeyBasicInfo = NULL;
HANDLE hDev = NULL;
pKeyBasicInfo = NULL;
do
{
UNICODE_STRING strKeyName;
UNICODE_STRING ustrDev ;// UNICODE_STRING_CONST(DEV_DOS_ROOT L"{F6ACFAC2-D39E-4A43-A320-0CDB9E22B15B}");
IO_STATUS_BLOCK IoStatusBlock;
ULONG nOid;
ZwEnumerateKey(hAdapter, nIndex, KeyBasicInformation, NULL, 0, &nSize);
pKeyBasicInfo = (PKEY_BASIC_INFORMATION) kmalloc(nSize);
if (NULL == pKeyBasicInfo)
{
status = STATUS_INSUFFICIENT_RESOURCES;
break;
}
status = ZwEnumerateKey(hAdapter, nIndex, KeyBasicInformation, pKeyBasicInfo, nSize, &nSize);
if (!NT_SUCCESS(status))
{
kprintf("ZwEnumerateKey fail \n");
break;
}
strKeyName.Buffer = pKeyBasicInfo->Name;
strKeyName.MaximumLength = (USHORT)pKeyBasicInfo->NameLength;
strKeyName.Length = (USHORT)pKeyBasicInfo->NameLength;
ustrDev.Buffer = kmalloc(strKeyName.MaximumLength+sizeof(DEV_DOS_ROOT));
ustrDev.MaximumLength = strKeyName.MaximumLength+sizeof(DEV_DOS_ROOT);
ustrDev.Length = 0;
if (NULL == ustrDev.Buffer)
{
status = STATUS_INSUFFICIENT_RESOURCES;
break;
}
RtlAppendUnicodeToString(&ustrDev, DEV_DOS_ROOT);
status = RtlAppendUnicodeStringToString(&ustrDev, &strKeyName);
if (STATUS_SUCCESS != status)
{
//DbgPrintEx(DPFLTR_IHVBUS_ID ,DPFLTR_ERROR_LEVEL,";RtlAppendUnicodeStringToString Error: %x\n", status);
kfree(ustrDev.Buffer);
break;
}
InitializeObjectAttributes(&ObjAttrib, &ustrDev, OBJ_CASE_INSENSITIVE, NULL, NULL);
status = ZwOpenFile(&hDev,
GENERIC_READ,
&ObjAttrib,
&IoStatusBlock,
FILE_SHARE_READ,
FILE_NON_DIRECTORY_FILE);
if (STATUS_SUCCESS != status)
{
//DbgPrintEx(DPFLTR_IHVBUS_ID ,DPFLTR_ERROR_LEVEL,";ZwOpenFile %wZ,Error: %x\n", &ustrDev, status);
kfree(ustrDev.Buffer);
break;
}
// nOid = OID_GEN_MEDIA_IN_USE;
// nOid = OID_GEN_PHYSICAL_MEDIUM; //网卡类型
// uTmp = sizeof(uTmp);
// status = ZwDeviceIoControlFile(hDev,
// NULL,
// NULL,
// NULL,
// &IoStatusBlock,
// IOCTL_NDIS_QUERY_GLOBAL_STATS,
// &nOid,
// sizeof(nOid),
// &uTmp,
// uTmp);
// if (STATUS_SUCCESS != status)
// {
// DbgPrintEx(DPFLTR_IHVBUS_ID ,DPFLTR_ERROR_LEVEL,";ZwDeviceIoControlFile OID_GEN_PHYSICAL_MEDIUM Error: 0X%x\n", status);
// uTmp = -1;
// if (status==STATUS_INVALID_PARAMETER)
// {
// // NdisPhysicalMediumUnspecified
// }
// // break;
// }
//其实这里应该先发OID_GEN_MEDIA_IN_USE获取下media类型
nOid = OID_GEN_MEDIA_CONNECT_STATUS; //网卡类型
uTmp = sizeof(uTmp);
status = ZwDeviceIoControlFile(hDev,
NULL,
NULL,
NULL,
&IoStatusBlock,
IOCTL_NDIS_QUERY_GLOBAL_STATS,
&nOid,
sizeof(nOid),
&uTmp,
uTmp);
if (STATUS_SUCCESS != status)
{
//DbgPrintEx(DPFLTR_IHVBUS_ID ,DPFLTR_ERROR_LEVEL,";ZwDeviceIoControlFile OID_GEN_MEDIA_CONNECT_STATUS Error: 0X%x\n", status);
uTmp = NdisMediaStateDisconnected;
// break;
}
pAIEX->pAI[uCounter].status = uTmp;
kprintf(" %wZ, OID_GEN_MEDIA_CONNECT_STATUS %s \n", &ustrDev, uTmp == NdisMediaStateConnected ? "Connected" : "Disconnected");
kfree(ustrDev.Buffer);
uTmp = sizeof(pAIEX->pAI[uCounter].macAddress);
nOid = OID_802_3_CURRENT_ADDRESS;
status = ZwDeviceIoControlFile(hDev,
NULL,
NULL,
NULL,
&IoStatusBlock,
IOCTL_NDIS_QUERY_GLOBAL_STATS,
&nOid,
sizeof(nOid),
pAIEX->pAI[uCounter].macAddress,
uTmp);
if (STATUS_SUCCESS != status)
{
//DbgPrintEx(DPFLTR_IHVBUS_ID ,DPFLTR_ERROR_LEVEL,";ZwDeviceIoControlFile OID_802_3_PERMANENT_ADDRESS Error: 0x%x\n", status);
break;
}
//DbgPrintEx(DPFLTR_IHVBUS_ID ,DPFLTR_ERROR_LEVEL,"Mac: %02X:%02X:%02X:%02X:%02X:%02X\n", pAIEX->pAI[uCounter].macAddress[0], pAIEX->pAI[uCounter].macAddress[1], pAIEX->pAI[uCounter].macAddress[2], pAIEX->pAI[uCounter].macAddress[3], pAIEX->pAI[uCounter].macAddress[4], pAIEX->pAI[uCounter].macAddress[5]);
pAIEX->pAI[uCounter].GUID.Buffer = kmalloc(pKeyBasicInfo->NameLength);
pAIEX->pAI[uCounter].GUID.Length = pAIEX->pAI[uCounter].GUID.MaximumLength = (USHORT)pKeyBasicInfo->NameLength;
RtlCopyMemory(pAIEX->pAI[uCounter].GUID.Buffer, pKeyBasicInfo->Name, pKeyBasicInfo->NameLength);
if (1)
{
CHAR IPAddress[48];
ANSI_STRING aniString;
UNICODE_STRING uniString;
char *pTmp=NULL;
UNICODE_STRING ustrAdapterInfo = UNICODE_STRING_CONST(L"\\Registry\\Machine\\System\\CurrentControlSet\\Services\\Tcpip\\Parameters\\Interfaces\\");
WCHAR *pPath =kmalloc(ustrAdapterInfo.Length+pKeyBasicInfo->NameLength+2);
RtlZeroMemory(pPath, ustrAdapterInfo.Length+pKeyBasicInfo->NameLength+2);
RtlCopyMemory(pPath, ustrAdapterInfo.Buffer, ustrAdapterInfo.Length);
pTmp = (char*)pPath;
RtlCopyMemory(&pTmp[ustrAdapterInfo.Length], pKeyBasicInfo->Name, pKeyBasicInfo->NameLength);
uTmp=0;
uTmp = sizeof(ULONG);
status = KKGetKeyValue(pPath, L"EnableDHCP", &uTmp, &uTmp);
if (NT_SUCCESS(status))
{
RtlZeroMemory(IPAddress, sizeof(IPAddress));
//开启了DHCP情况
if (uTmp==1)
{
pAIEX->pAI[uCounter].bDhcp = TRUE;
//够长了，应该会自动截断
RtlZeroMemory(IPAddress, sizeof(IPAddress));
uTmp = sizeof(IPAddress);
status = KKGetKeyValue(pPath, L"DhcpIPAddress", IPAddress, &uTmp);
if (NT_SUCCESS(status))
{
RtlInitUnicodeString(&uniString, (WCHAR*)IPAddress);
RtlUnicodeStringToAnsiString(&aniString, &uniString, TRUE);
RtlZeroMemory(IPAddress, sizeof(IPAddress));
RtlCopyMemory(IPAddress, aniString.Buffer, aniString.Length);
pAIEX->pAI[uCounter].IPAddr = inet_addr(IPAddress);
RtlFreeAnsiString(&aniString);
}
else
{
kprintf("fail 2 get DhcpIPAddress\n");
}
RtlZeroMemory(IPAddress, sizeof(IPAddress));
uTmp = sizeof(IPAddress);
status = KKGetKeyValue(pPath, L"DhcpDefaultGateway", IPAddress, &uTmp);
if (NT_SUCCESS(status))
{
RtlInitUnicodeString(&uniString, (WCHAR*)IPAddress);
RtlUnicodeStringToAnsiString(&aniString, &uniString, TRUE);
RtlZeroMemory(IPAddress, sizeof(IPAddress));
RtlCopyMemory(IPAddress, aniString.Buffer, aniString.Length);
pAIEX->pAI[uCounter].GatewayIpAddr = inet_addr(IPAddress);
RtlFreeAnsiString(&aniString);
}
else
{
kprintf("fail 2 get DhcpDefaultGateway\n");
}
}//if (uTmp==1)
else
{
pAIEX->pAI[uCounter].bDhcp = FALSE;
//够长了，应该会自动截断
RtlZeroMemory(IPAddress, sizeof(IPAddress));
uTmp = sizeof(IPAddress);
status = KKGetKeyValue(pPath, L"IPAddress", IPAddress, &uTmp);
if (NT_SUCCESS(status))
{
RtlInitUnicodeString(&uniString, (WCHAR*)IPAddress);
RtlUnicodeStringToAnsiString(&aniString, &uniString, TRUE);
RtlZeroMemory(IPAddress, sizeof(IPAddress));
RtlCopyMemory(IPAddress, aniString.Buffer, aniString.Length);
pAIEX->pAI[uCounter].IPAddr = inet_addr(IPAddress);
RtlFreeAnsiString(&aniString);
}
else
{
kprintf("fail 2 get IPAddress\n");
}
RtlZeroMemory(IPAddress, sizeof(IPAddress));
uTmp = sizeof(IPAddress);
status = KKGetKeyValue(pPath, L"DefaultGateway", IPAddress, &uTmp);
if (NT_SUCCESS(status))
{
RtlInitUnicodeString(&uniString, (WCHAR*)IPAddress);
RtlUnicodeStringToAnsiString(&aniString, &uniString, TRUE);
RtlZeroMemory(IPAddress, sizeof(IPAddress));
RtlCopyMemory(IPAddress, aniString.Buffer, aniString.Length);
pAIEX->pAI[uCounter].GatewayIpAddr = inet_addr(IPAddress);
RtlFreeAnsiString(&aniString);
}
else
{
kprintf("fail 2 get DefaultGateway\n");
}
}
}// end status = QueryRegistryValue(pPath, L"EnableDHCP
if (pPath)
{
kfree(pPath);pPath=NULL;
}
}
uCounter++;
pAIEX->uNumber = uCounter;
}while(0);
if (hDev)
{
ZwClose(hDev);
}
if (pKeyBasicInfo)
{
kfree(pKeyBasicInfo);
}
if (STATUS_SUCCESS == status)
{
// break;
}
}
}while(0);
if (pKeyFullInfo)
{
kfree(pKeyFullInfo);
}
if (hAdapter)
{
ZwClose(hAdapter);
}
return status;
}
NTSTATUS
NTAPI
IntCopyRegistryKey(
_In_ HANDLE SourceKeyHandle,
_In_ HANDLE DestKeyHandle)
{
PVOID InfoBuffer;
PKEY_BASIC_INFORMATION KeyInformation;
PKEY_VALUE_FULL_INFORMATION KeyValueInformation;
OBJECT_ATTRIBUTES ObjectAttributes;
ULONG Index, InformationLength, RequiredLength;
UNICODE_STRING NameString;
NTSTATUS Status;
HANDLE SourceSubKeyHandle, DestSubKeyHandle;
/* Start with no buffer, set initial size */
InfoBuffer = NULL;
InformationLength = 256;
/* Start looping with key index 0 */
Index = 0;
while (TRUE)
{
/* Check if we have no buffer */
if (InfoBuffer == NULL)
{
/* Allocate a new buffer */
InfoBuffer = ExAllocatePoolWithTag(PagedPool,
InformationLength,
TAG_VIDEO_PORT_BUFFER);
if (InfoBuffer == NULL)
{
ERR_(VIDEOPRT, "Could not allocate buffer for key info\n");
return Status;
}
}
/* Enumerate the next sub-key */
KeyInformation = InfoBuffer;
Status = ZwEnumerateKey(SourceKeyHandle,
Index,
KeyBasicInformation,
KeyInformation,
InformationLength,
&RequiredLength);
if ((Status == STATUS_BUFFER_OVERFLOW) ||
(Status == STATUS_BUFFER_TOO_SMALL))
{
/* Free the buffer and remember the required size */
ExFreePoolWithTag(InfoBuffer, TAG_VIDEO_PORT_BUFFER);
InfoBuffer = NULL;
InformationLength = RequiredLength;
/* Try again */
continue;
}
else if (Status == STATUS_NO_MORE_ENTRIES)
{
/* We are done with the sub-keys */
break;
}
else if (!NT_SUCCESS(Status))
{
ERR_(VIDEOPRT, "ZwEnumerateKey failed, status 0x%lx\n", Status);
goto Cleanup;
}
/* Initialize a unicode string from the key name */
NameString.Buffer = KeyInformation->Name;
NameString.Length = (USHORT)KeyInformation->NameLength;
NameString.MaximumLength = NameString.Length;
/* Initialize object attributes and open the source sub-key */
InitializeObjectAttributes(&ObjectAttributes,
&NameString,
OBJ_KERNEL_HANDLE | OBJ_CASE_INSENSITIVE,
SourceKeyHandle,
NULL);
Status = ZwOpenKey(&SourceSubKeyHandle, KEY_READ, &ObjectAttributes);
if (!NT_SUCCESS(Status))
{
ERR_(VIDEOPRT, "failed to open the source key.\n");
goto Cleanup;
}
/* Initialize object attributes and create the dest sub-key */
InitializeObjectAttributes(&ObjectAttributes,
&NameString,
OBJ_KERNEL_HANDLE | OBJ_CASE_INSENSITIVE,
DestKeyHandle,
NULL);
Status = ZwCreateKey(&DestSubKeyHandle,
KEY_WRITE,
&ObjectAttributes,
0,
NULL,
0,
NULL);
if (!NT_SUCCESS(Status))
{
ERR_(VIDEOPRT, "failed to create the destination key.\n");
ObCloseHandle(SourceSubKeyHandle, KernelMode);
goto Cleanup;
}
/* Recursively copy the sub-key */
Status = IntCopyRegistryKey(SourceSubKeyHandle, DestSubKeyHandle);
if (!NT_SUCCESS(Status))
{
/* Just warn, but continue with the remaining sub-keys */
WARN_(VIDEOPRT, "failed to copy subkey '%wZ'.\n", &NameString);
}
/* Close the sub-key handles */
ObCloseHandle(SourceSubKeyHandle, KernelMode);
ObCloseHandle(DestSubKeyHandle, KernelMode);
/* Next sub-key */
Index++;
}
/* Start looping with value index 0 */
Index = 0;
while (TRUE)
{
/* Check if we have no buffer */
if (InfoBuffer == NULL)
{
/* Allocate a new buffer */
InfoBuffer = ExAllocatePoolWithTag(PagedPool,
InformationLength,
TAG_VIDEO_PORT_BUFFER);
if (InfoBuffer == NULL)
{
ERR_(VIDEOPRT, "Could not allocate buffer for key values\n");
return Status;
}
}
/* Enumerate the next value */
KeyValueInformation = InfoBuffer;
Status = ZwEnumerateValueKey(SourceKeyHandle,
Index,
KeyValueFullInformation,
KeyValueInformation,
InformationLength,
&RequiredLength);
if ((Status == STATUS_BUFFER_OVERFLOW) ||
(Status == STATUS_BUFFER_TOO_SMALL))
{
/* Free the buffer and remember the required size */
ExFreePoolWithTag(InfoBuffer, TAG_VIDEO_PORT_BUFFER);
InfoBuffer = NULL;
InformationLength = RequiredLength;
/* Try again */
continue;
}
else if (Status == STATUS_NO_MORE_ENTRIES)
{
/* We are done with the values */
Status = STATUS_SUCCESS;
break;
}
else if (!NT_SUCCESS(Status))
{
ERR_(VIDEOPRT, "ZwEnumerateValueKey failed, status 0x%lx\n", Status);
goto Cleanup;
}
/* Initialize a unicode string from the value name */
NameString.Buffer = KeyValueInformation->Name;
NameString.Length = (USHORT)KeyValueInformation->NameLength;
NameString.MaximumLength = NameString.Length;
/* Create the key value in the destination key */
Status = ZwSetValueKey(DestKeyHandle,
&NameString,
KeyValueInformation->TitleIndex,
KeyValueInformation->Type,
(PUCHAR)KeyValueInformation + KeyValueInformation->DataOffset,
KeyValueInformation->DataLength);
if (!NT_SUCCESS(Status))
{
/* Just warn, but continue with the remaining sub-keys */
WARN_(VIDEOPRT, "failed to set value '%wZ'.\n", NameString);
}
/* Next subkey */
Index++;
}
Cleanup:
/* Free the buffer and return the failure code */
if (InfoBuffer != NULL)
ExFreePoolWithTag(InfoBuffer, TAG_VIDEO_PORT_BUFFER);
return Status;
}
NTSTATUS NTAPI
IopDetectResourceConflict(
IN PCM_RESOURCE_LIST ResourceList,
IN BOOLEAN Silent,
OUT OPTIONAL PCM_PARTIAL_RESOURCE_DESCRIPTOR ConflictingDescriptor)
{
OBJECT_ATTRIBUTES ObjectAttributes;
UNICODE_STRING KeyName;
HANDLE ResourceMapKey = INVALID_HANDLE_VALUE, ChildKey2 = INVALID_HANDLE_VALUE, ChildKey3 = INVALID_HANDLE_VALUE;
ULONG KeyInformationLength, RequiredLength, KeyValueInformationLength, KeyNameInformationLength;
PKEY_BASIC_INFORMATION KeyInformation;
PKEY_VALUE_PARTIAL_INFORMATION KeyValueInformation;
PKEY_VALUE_BASIC_INFORMATION KeyNameInformation;
ULONG ChildKeyIndex1 = 0, ChildKeyIndex2 = 0, ChildKeyIndex3 = 0;
NTSTATUS Status;
RtlInitUnicodeString(&KeyName, L"\\Registry\\Machine\\HARDWARE\\RESOURCEMAP");
InitializeObjectAttributes(&ObjectAttributes, &KeyName, OBJ_CASE_INSENSITIVE, 0, NULL);
Status = ZwOpenKey(&ResourceMapKey, KEY_ENUMERATE_SUB_KEYS | KEY_QUERY_VALUE, &ObjectAttributes);
if (!NT_SUCCESS(Status))
{
/* The key is missing which means we are the first device */
return STATUS_SUCCESS;
}
while (TRUE)
{
Status = ZwEnumerateKey(ResourceMapKey,
ChildKeyIndex1,
KeyBasicInformation,
NULL,
0,
&RequiredLength);
if (Status == STATUS_NO_MORE_ENTRIES)
break;
else if (Status == STATUS_BUFFER_OVERFLOW || Status == STATUS_BUFFER_TOO_SMALL)
{
KeyInformationLength = RequiredLength;
KeyInformation = ExAllocatePool(PagedPool, KeyInformationLength);
if (!KeyInformation)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
goto cleanup;
}
Status = ZwEnumerateKey(ResourceMapKey,
ChildKeyIndex1,
KeyBasicInformation,
KeyInformation,
KeyInformationLength,
&RequiredLength);
}
else
goto cleanup;
ChildKeyIndex1++;
if (!NT_SUCCESS(Status))
goto cleanup;
KeyName.Buffer = KeyInformation->Name;
KeyName.MaximumLength = KeyName.Length = (USHORT)KeyInformation->NameLength;
InitializeObjectAttributes(&ObjectAttributes,
&KeyName,
OBJ_CASE_INSENSITIVE,
ResourceMapKey,
NULL);
Status = ZwOpenKey(&ChildKey2, KEY_ENUMERATE_SUB_KEYS | KEY_QUERY_VALUE, &ObjectAttributes);
ExFreePool(KeyInformation);
if (!NT_SUCCESS(Status))
goto cleanup;
while (TRUE)
{
Status = ZwEnumerateKey(ChildKey2,
ChildKeyIndex2,
KeyBasicInformation,
NULL,
0,
&RequiredLength);
if (Status == STATUS_NO_MORE_ENTRIES)
break;
else if (Status == STATUS_BUFFER_TOO_SMALL)
{
KeyInformationLength = RequiredLength;
KeyInformation = ExAllocatePool(PagedPool, KeyInformationLength);
if (!KeyInformation)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
goto cleanup;
}
Status = ZwEnumerateKey(ChildKey2,
ChildKeyIndex2,
KeyBasicInformation,
KeyInformation,
KeyInformationLength,
&RequiredLength);
}
else
goto cleanup;
ChildKeyIndex2++;
if (!NT_SUCCESS(Status))
goto cleanup;
KeyName.Buffer = KeyInformation->Name;
KeyName.MaximumLength = KeyName.Length = (USHORT)KeyInformation->NameLength;
InitializeObjectAttributes(&ObjectAttributes,
&KeyName,
OBJ_CASE_INSENSITIVE,
ChildKey2,
NULL);
Status = ZwOpenKey(&ChildKey3, KEY_QUERY_VALUE, &ObjectAttributes);
ExFreePool(KeyInformation);
if (!NT_SUCCESS(Status))
goto cleanup;
while (TRUE)
{
Status = ZwEnumerateValueKey(ChildKey3,
ChildKeyIndex3,
KeyValuePartialInformation,
NULL,
0,
&RequiredLength);
if (Status == STATUS_NO_MORE_ENTRIES)
break;
else if (Status == STATUS_BUFFER_TOO_SMALL)
{
KeyValueInformationLength = RequiredLength;
KeyValueInformation = ExAllocatePool(PagedPool, KeyValueInformationLength);
if (!KeyValueInformation)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
goto cleanup;
}
Status = ZwEnumerateValueKey(ChildKey3,
ChildKeyIndex3,
KeyValuePartialInformation,
KeyValueInformation,
KeyValueInformationLength,
&RequiredLength);
}
else
goto cleanup;
if (!NT_SUCCESS(Status))
goto cleanup;
Status = ZwEnumerateValueKey(ChildKey3,
ChildKeyIndex3,
KeyValueBasicInformation,
NULL,
0,
&RequiredLength);
if (Status == STATUS_BUFFER_TOO_SMALL)
{
KeyNameInformationLength = RequiredLength;
KeyNameInformation = ExAllocatePool(PagedPool, KeyNameInformationLength + sizeof(WCHAR));
if (!KeyNameInformation)
{
Status = STATUS_INSUFFICIENT_RESOURCES;
goto cleanup;
}
Status = ZwEnumerateValueKey(ChildKey3,
ChildKeyIndex3,
KeyValueBasicInformation,
KeyNameInformation,
KeyNameInformationLength,
&RequiredLength);
}
else
goto cleanup;
ChildKeyIndex3++;
if (!NT_SUCCESS(Status))
goto cleanup;
KeyNameInformation->Name[KeyNameInformation->NameLength / sizeof(WCHAR)] = UNICODE_NULL;
/* Skip translated entries */
if (wcsstr(KeyNameInformation->Name, L".Translated"))
{
ExFreePool(KeyNameInformation);
continue;
}
ExFreePool(KeyNameInformation);
if (IopCheckForResourceConflict(ResourceList,
(PCM_RESOURCE_LIST)KeyValueInformation->Data,
Silent,
ConflictingDescriptor))
{
ExFreePool(KeyValueInformation);
Status = STATUS_CONFLICTING_ADDRESSES;
goto cleanup;
}
ExFreePool(KeyValueInformation);
}
}
}
cleanup:
if (ResourceMapKey != INVALID_HANDLE_VALUE)
ZwClose(ResourceMapKey);
if (ChildKey2 != INVALID_HANDLE_VALUE)
ZwClose(ChildKey2);
if (ChildKey3 != INVALID_HANDLE_VALUE)
ZwClose(ChildKey3);
if (Status == STATUS_NO_MORE_ENTRIES)
Status = STATUS_SUCCESS;
return Status;
}
NTSTATUS vboxWddmRegQueryVideoGuidString(ULONG cbBuf, PWCHAR pBuf, PULONG pcbResult)
{
HANDLE hKey;
NTSTATUS Status = vboxWddmRegOpenKey(&hKey, VBOXWDDM_REG_DISPLAYSETTINGSVIDEOKEY, GENERIC_READ);
Assert(Status == STATUS_SUCCESS);
if (Status == STATUS_SUCCESS)
{
struct
{
KEY_BASIC_INFORMATION Name;
WCHAR Buf[256];
} Buf;
WCHAR KeyBuf[sizeof (VBOXWDDM_REG_DISPLAYSETTINGSVIDEOKEY)/2 + 256 + 64];
wcscpy(KeyBuf, VBOXWDDM_REG_DISPLAYSETTINGSVIDEOKEY);
ULONG ResultLength;
BOOL bFound = FALSE;
for (ULONG i = 0; !bFound; ++i)
{
RtlZeroMemory(&Buf, sizeof (Buf));
Status = ZwEnumerateKey(hKey, i, KeyBasicInformation, &Buf, sizeof (Buf), &ResultLength);
Assert(Status == STATUS_SUCCESS);
/* we should not encounter STATUS_NO_MORE_ENTRIES here since this would mean we did not find our entry */
if (Status != STATUS_SUCCESS)
break;
HANDLE hSubKey;
PWCHAR pSubBuf = KeyBuf + (sizeof (VBOXWDDM_REG_DISPLAYSETTINGSVIDEOKEY) - 2)/2;
memcpy(pSubBuf, Buf.Name.Name, Buf.Name.NameLength);
pSubBuf += Buf.Name.NameLength/2;
memcpy(pSubBuf, VBOXWDDM_REG_DISPLAYSETTINGSVIDEOKEY_SUBKEY, sizeof (VBOXWDDM_REG_DISPLAYSETTINGSVIDEOKEY_SUBKEY));
Status = vboxWddmRegOpenKey(&hSubKey, KeyBuf, GENERIC_READ);
Assert(Status == STATUS_SUCCESS);
if (Status == STATUS_SUCCESS)
{
struct
{
KEY_VALUE_PARTIAL_INFORMATION Info;
UCHAR Buf[sizeof (L"VBoxVideoWddm")]; /* should be enough */
} KeyData;
ULONG cbResult;
UNICODE_STRING RtlStr;
RtlInitUnicodeString(&RtlStr, L"Service");
Status = ZwQueryValueKey(hSubKey,
&RtlStr,
KeyValuePartialInformation,
&KeyData.Info,
sizeof(KeyData),
&cbResult);
Assert(Status == STATUS_SUCCESS || STATUS_BUFFER_TOO_SMALL || STATUS_BUFFER_OVERFLOW);
if (Status == STATUS_SUCCESS)
{
if (KeyData.Info.Type == REG_SZ)
{
if (KeyData.Info.DataLength == sizeof (L"VBoxVideoWddm"))
{
if (!wcscmp(L"VBoxVideoWddm", (PWCHAR)KeyData.Info.Data))
{
bFound = TRUE;
*pcbResult = Buf.Name.NameLength + 2;
if (cbBuf >= Buf.Name.NameLength + 2)
{
memcpy(pBuf, Buf.Name.Name, Buf.Name.NameLength + 2);
}
else
{
Status = STATUS_BUFFER_TOO_SMALL;
}
}
}
}
}
NTSTATUS tmpStatus = ZwClose(hSubKey);
Assert(tmpStatus == STATUS_SUCCESS);
}
else
break;
}
NTSTATUS tmpStatus = ZwClose(hKey);
Assert(tmpStatus == STATUS_SUCCESS);
}
return Status;
}
NTSTATUS
NTAPI
PciAcpiFindRsdt(OUT PACPI_BIOS_MULTI_NODE *AcpiMultiNode)
{
BOOLEAN Result;
NTSTATUS Status;
HANDLE KeyHandle, SubKey;
ULONG NumberOfBytes, i, Length;
PKEY_FULL_INFORMATION FullInfo;
PKEY_BASIC_INFORMATION KeyInfo;
PKEY_VALUE_PARTIAL_INFORMATION ValueInfo;
PACPI_BIOS_MULTI_NODE NodeData;
UNICODE_STRING ValueName;
struct
{
CM_FULL_RESOURCE_DESCRIPTOR Descriptor;
ACPI_BIOS_MULTI_NODE Node;
} *Package;
/* So we know what to free at the end of the body */
ValueInfo = NULL;
KeyInfo = NULL;
KeyHandle = NULL;
FullInfo = NULL;
Package = NULL;
do
{
/* Open the ACPI BIOS key */
Result = PciOpenKey(L"\\Registry\\Machine\\HARDWARE\\DESCRIPTION\\"
L"System\\MultiFunctionAdapter",
NULL,
KEY_QUERY_VALUE,
&KeyHandle,
&Status);
if (!Result) break;
/* Query how much space should be allocated for the key information */
Status = ZwQueryKey(KeyHandle,
KeyFullInformation,
NULL,
sizeof(ULONG),
&NumberOfBytes);
if (Status != STATUS_BUFFER_TOO_SMALL) break;
/* Allocate the space required */
Status = STATUS_INSUFFICIENT_RESOURCES;
FullInfo = ExAllocatePoolWithTag(PagedPool, NumberOfBytes, PCI_POOL_TAG);
if ( !FullInfo ) break;
/* Now query the key information that's needed */
Status = ZwQueryKey(KeyHandle,
KeyFullInformation,
FullInfo,
NumberOfBytes,
&NumberOfBytes);
if (!NT_SUCCESS(Status)) break;
/* Allocate enough space to hold the value information plus the name */
Status = STATUS_INSUFFICIENT_RESOURCES;
Length = FullInfo->MaxNameLen + 26;
KeyInfo = ExAllocatePoolWithTag(PagedPool, Length, PCI_POOL_TAG);
if ( !KeyInfo ) break;
/* Allocate the value information and name we expect to find */
ValueInfo = ExAllocatePoolWithTag(PagedPool,
sizeof(KEY_VALUE_PARTIAL_INFORMATION) +
sizeof(L"ACPI BIOS"),
PCI_POOL_TAG);
if (!ValueInfo) break;
/* Loop each sub-key */
i = 0;
while (TRUE)
{
/* Query each sub-key */
Status = ZwEnumerateKey(KeyHandle,
i++,
KeyBasicInformation,
KeyInfo,
Length,
&NumberOfBytes);
if (Status == STATUS_NO_MORE_ENTRIES) break;
/* Null-terminate the keyname, because the kernel does not */
KeyInfo->Name[KeyInfo->NameLength / sizeof(WCHAR)] = UNICODE_NULL;
/* Open this subkey */
Result = PciOpenKey(KeyInfo->Name,
KeyHandle,
KEY_QUERY_VALUE,
&SubKey,
&Status);
if (Result)
{
/* Query the identifier value for this subkey */
RtlInitUnicodeString(&ValueName, L"Identifier");
Status = ZwQueryValueKey(SubKey,
&ValueName,
KeyValuePartialInformation,
ValueInfo,
sizeof(KEY_VALUE_PARTIAL_INFORMATION) +
sizeof(L"ACPI BIOS"),
&NumberOfBytes);
if (NT_SUCCESS(Status))
{
/* Check if this is the PCI BIOS subkey */
if (!wcsncmp((PWCHAR)ValueInfo->Data,
L"ACPI BIOS",
ValueInfo->DataLength))
{
/* It is, proceed to query the PCI IRQ routing table */
Status = PciGetRegistryValue(L"Configuration Data",
KeyInfo->Name,
KeyHandle,
REG_FULL_RESOURCE_DESCRIPTOR,
(PVOID*)&Package,
&NumberOfBytes);
ZwClose(SubKey);
break;
}
}
/* Close the subkey and try the next one */
ZwClose(SubKey);
}
}
/* Check if we got here because the routing table was found */
if (!NT_SUCCESS(Status))
{
/* This should only fail if we're out of entries */
ASSERT(Status == STATUS_NO_MORE_ENTRIES);
break;
}
/* Check if a descriptor was found */
if (!Package) break;
/* The configuration data is a resource list, and the BIOS node follows */
NodeData = &Package->Node;
/* How many E820 memory entries are there? */
Length = sizeof(ACPI_BIOS_MULTI_NODE) +
(NodeData->Count - 1) * sizeof(ACPI_E820_ENTRY);
/* Allocate the buffer needed to copy the information */
Status = STATUS_INSUFFICIENT_RESOURCES;
*AcpiMultiNode = ExAllocatePoolWithTag(NonPagedPool, Length, PCI_POOL_TAG);
if (!*AcpiMultiNode) break;
/* Copy the data */
RtlCopyMemory(*AcpiMultiNode, NodeData, Length);
Status = STATUS_SUCCESS;
} while (FALSE);
/* Close any opened keys, free temporary allocations, and return status */
if (Package) ExFreePoolWithTag(Package, 0);
if (ValueInfo) ExFreePoolWithTag(ValueInfo, 0);
if (KeyInfo) ExFreePoolWithTag(KeyInfo, 0);
if (FullInfo) ExFreePoolWithTag(FullInfo, 0);
if (KeyHandle) ZwClose(KeyHandle);
return Status;
}
NTSTATUS
NTAPI
PciGetIrqRoutingTableFromRegistry(OUT PPCI_IRQ_ROUTING_TABLE *PciRoutingTable)
{
BOOLEAN Result;
NTSTATUS Status;
HANDLE KeyHandle, SubKey;
ULONG NumberOfBytes, i, Length;
PKEY_FULL_INFORMATION FullInfo;
PKEY_BASIC_INFORMATION KeyInfo;
PKEY_VALUE_PARTIAL_INFORMATION ValueInfo;
UNICODE_STRING ValueName;
struct
{
CM_FULL_RESOURCE_DESCRIPTOR Descriptor;
PCI_IRQ_ROUTING_TABLE Table;
} *Package;
/* So we know what to free at the end of the body */
Package = NULL;
ValueInfo = NULL;
KeyInfo = NULL;
KeyHandle = NULL;
FullInfo = NULL;
do
{
/* Open the BIOS key */
Result = PciOpenKey(L"\\Registry\\Machine\\HARDWARE\\DESCRIPTION\\"
L"System\\MultiFunctionAdapter",
NULL,
KEY_QUERY_VALUE,
&KeyHandle,
&Status);
if (!Result) break;
/* Query how much space should be allocated for the key information */
Status = ZwQueryKey(KeyHandle,
KeyFullInformation,
NULL,
sizeof(ULONG),
&NumberOfBytes);
if (Status != STATUS_BUFFER_TOO_SMALL) break;
/* Allocate the space required */
Status = STATUS_INSUFFICIENT_RESOURCES;
FullInfo = ExAllocatePoolWithTag(PagedPool, NumberOfBytes, PCI_POOL_TAG);
if ( !FullInfo ) break;
/* Now query the key information that's needed */
Status = ZwQueryKey(KeyHandle,
KeyFullInformation,
FullInfo,
NumberOfBytes,
&NumberOfBytes);
if (!NT_SUCCESS(Status)) break;
/* Allocate enough space to hold the value information plus the name */
Status = STATUS_INSUFFICIENT_RESOURCES;
Length = FullInfo->MaxNameLen + 26;
KeyInfo = ExAllocatePoolWithTag(PagedPool, Length, PCI_POOL_TAG);
if (!KeyInfo) break;
/* Allocate the value information and name we expect to find */
ValueInfo = ExAllocatePoolWithTag(PagedPool,
sizeof(KEY_VALUE_PARTIAL_INFORMATION) +
sizeof(L"PCI BIOS"),
PCI_POOL_TAG);
if (!ValueInfo) break;
/* Loop each sub-key */
i = 0;
while (TRUE)
{
/* Query each sub-key */
Status = ZwEnumerateKey(KeyHandle,
i++,
KeyBasicInformation,
KeyInfo,
Length,
&NumberOfBytes);
if (Status == STATUS_NO_MORE_ENTRIES) break;
/* Null-terminate the keyname, because the kernel does not */
KeyInfo->Name[KeyInfo->NameLength / sizeof(WCHAR)] = UNICODE_NULL;
/* Open this subkey */
Result = PciOpenKey(KeyInfo->Name,
KeyHandle,
KEY_QUERY_VALUE,
&SubKey,
&Status);
if (Result)
{
/* Query the identifier value for this subkey */
RtlInitUnicodeString(&ValueName, L"Identifier");
Status = ZwQueryValueKey(SubKey,
&ValueName,
KeyValuePartialInformation,
ValueInfo,
sizeof(KEY_VALUE_PARTIAL_INFORMATION) +
sizeof(L"PCI BIOS"),
&NumberOfBytes);
if (NT_SUCCESS(Status))
{
/* Check if this is the PCI BIOS subkey */
if (!wcsncmp((PWCHAR)ValueInfo->Data,
L"PCI BIOS",
ValueInfo->DataLength))
{
/* It is, proceed to query the PCI IRQ routing table */
Status = PciGetRegistryValue(L"Configuration Data",
L"RealModeIrqRoutingTable"
L"\\0",
SubKey,
REG_FULL_RESOURCE_DESCRIPTOR,
(PVOID*)&Package,
&NumberOfBytes);
ZwClose(SubKey);
break;
}
}
/* Close the subkey and try the next one */
ZwClose(SubKey);
}
}
/* Check if we got here because the routing table was found */
if (!NT_SUCCESS(Status)) break;
/* Check if a descriptor was found */
if (!Package) break;
/* Make sure the buffer is large enough to hold the table */
if ((NumberOfBytes < sizeof(*Package)) ||
(Package->Table.TableSize >
(NumberOfBytes - sizeof(CM_FULL_RESOURCE_DESCRIPTOR))))
{
/* Invalid package size */
Status = STATUS_UNSUCCESSFUL;
break;
}
/* Allocate space for the table */
Status = STATUS_INSUFFICIENT_RESOURCES;
*PciRoutingTable = ExAllocatePoolWithTag(PagedPool,
NumberOfBytes,
PCI_POOL_TAG);
if (!*PciRoutingTable) break;
/* Copy the registry data */
RtlCopyMemory(*PciRoutingTable,
&Package->Table,
NumberOfBytes - sizeof(CM_FULL_RESOURCE_DESCRIPTOR));
Status = STATUS_SUCCESS;
} while (FALSE);
/* Close any opened keys, free temporary allocations, and return status */
if (Package) ExFreePoolWithTag(Package, 0);
if (ValueInfo) ExFreePoolWithTag(ValueInfo, 0);
if (KeyInfo) ExFreePoolWithTag(KeyInfo, 0);
if (FullInfo) ExFreePoolWithTag(FullInfo, 0);
if (KeyHandle) ZwClose(KeyHandle);
return Status;
}
NTSTATUS NTAPI EnumDeviceKeys(
IN PUNICODE_STRING RegistryPath,
IN PWSTR SubKey,
IN PREGISTRY_CALLBACK_ROUTINE Callback,
IN PVOID Context)
/*
Description:
Enumerate the device subkeys in the driver's registry entry, and
call the specified callback routine for each device.
Parameters:
RegistryPath The location of the registry entry
Subkey The device's subkey
Callback A routine called for each device
Context ???
Return Value:
NT status STATUS_SUCCESS if successful
*/
{
NTSTATUS s;
OBJECT_ATTRIBUTES oa;
HANDLE hKey, hSubKey;
UNICODE_STRING SubkeyName;
ULONG i;
// Attempt to open the key
InitializeObjectAttributes(&oa, RegistryPath, OBJ_CASE_INSENSITIVE,
NULL, (PSECURITY_DESCRIPTOR)NULL);
s = ZwOpenKey(&hKey, KEY_READ, &oa);
TEST_STATUS(s); // debugging
if (! NT_SUCCESS(s))
return s; // Problem
RtlInitUnicodeString(&SubkeyName, SubKey);
DPRINT("Subkey: %wZ\n", &SubkeyName);
InitializeObjectAttributes(&oa, &SubkeyName, OBJ_CASE_INSENSITIVE,
hKey, (PSECURITY_DESCRIPTOR)NULL);
s = ZwOpenKey(&hSubKey, KEY_ENUMERATE_SUB_KEYS, &oa);
ZwClose(hKey);
TEST_STATUS(s); // debugging
if (! NT_SUCCESS(s))
return s;
// And now, the enumeration
for (i = 0;; i ++)
{
KEY_BASIC_INFORMATION Info;
PKEY_BASIC_INFORMATION pInfo;
ULONG ResultLength = 0;
ULONG Size = 0;
PWSTR Pos;
PWSTR Name;
// Find the length of the subkey data
// Info.NameLength = 0; // TEMPORARY!
s = ZwEnumerateKey(hSubKey, i, KeyBasicInformation, &Info,
sizeof(Info), &ResultLength);
if (s == STATUS_NO_MORE_ENTRIES)
break;
DPRINT("Found an entry, allocating memory...\n");
// Size = Info.NameLength + FIELD_OFFSET(KEY_BASIC_INFORMATION, Name[0]);
Size = ResultLength + FIELD_OFFSET(KEY_BASIC_INFORMATION, Name[0]);
DPRINT("Size is %d\n", Size);
pInfo = (PKEY_BASIC_INFORMATION) ExAllocatePool(PagedPool, Size);
if (pInfo == NULL)
{
DPRINT("INSUFFICIENT RESOURCES!\n");
s = STATUS_INSUFFICIENT_RESOURCES;
break;
}
DPRINT("Re-enumerating...\n");
s = ZwEnumerateKey(hSubKey, i, KeyBasicInformation, pInfo, Size,
&ResultLength);
// TEST_STATUS(s); // debugging
if (! NT_SUCCESS(s))
{
ExFreePool((PVOID) pInfo);
s = STATUS_INTERNAL_ERROR;
break;
}
DPRINT("Allocating memory for name...\n");
Name = ExAllocatePool(PagedPool,
RegistryPath->Length + sizeof(WCHAR) +
SubkeyName.Length + sizeof(WCHAR) +
pInfo->NameLength + sizeof(UNICODE_NULL));
if (Name == NULL)
{
DPRINT("INSUFFICIENT RESOURCES!");
ExFreePool((PVOID) pInfo);
return STATUS_INSUFFICIENT_RESOURCES;
}
// Copy the key name
RtlCopyMemory((PVOID)Name, (PVOID)RegistryPath->Buffer, RegistryPath->Length);
Pos = Name + (RegistryPath->Length / sizeof(WCHAR));
Pos[0] = '\\';
Pos++;
// Copy the parameters sub key name
RtlCopyMemory((PVOID)Pos, (PVOID)SubKey, SubkeyName.Length); //SubkeyName?
Pos += SubkeyName.Length / sizeof(WCHAR);
Pos[0] = '\\';
Pos ++;
// Copy the device sub key name
RtlCopyMemory((PVOID)Pos, (PVOID)pInfo->Name, pInfo->NameLength);
Pos += pInfo->NameLength / sizeof(WCHAR);
Pos[0] = UNICODE_NULL;
ExFreePool((PVOID)pInfo);
DPRINT("Calling callback...\n");
s = (*Callback)(Name, Context);
if (! NT_SUCCESS(s))
{ DPRINT("Callback FAILED\n");
break;}
}
ZwClose(hSubKey);
DPRINT("%d device registry keys found\n", i);
if ((i == 0) && (s == STATUS_NO_MORE_ENTRIES))
return STATUS_DEVICE_CONFIGURATION_ERROR;
return s == STATUS_NO_MORE_ENTRIES ? STATUS_SUCCESS : s;
}
