#define UNICODE_PATH_SEP L'\\'
#define UNICODE_NO_PATH L"..."
+#define OB_NAME_TAG TAG('O','b','N','m')
typedef struct _RETENTION_CHECK_PARAMS
{
IN KPROCESSOR_MODE AccessMode)
{
NTSTATUS Status = STATUS_SUCCESS;
+ ULONG StringLength;
+ PWCHAR StringBuffer = NULL;
UNICODE_STRING LocalName = {}; /* <= GCC 4.0 + Optimizer */
- /* First Probe the String */
- DPRINT("ObpCaptureObjectName: %wZ\n", ObjectName);
- if (AccessMode != KernelMode)
+ /* Initialize the Input String */
+ RtlInitUnicodeString(CapturedName, NULL);
+
+ /* Protect everything */
+ _SEH_TRY
{
- DPRINT("Probing Struct\n");
- _SEH_TRY
+ /* First Probe the String */
+ DPRINT("ObpCaptureObjectName: %wZ\n", ObjectName);
+ if (AccessMode != KernelMode)
{
- /* FIXME: Explorer or win32 broken I think */
- #if 0
ProbeForRead(ObjectName,
sizeof(UNICODE_STRING),
sizeof(USHORT));
- #endif
LocalName = *ObjectName;
+
+ ProbeForRead(LocalName.Buffer,
+ LocalName.Length,
+ sizeof(WCHAR));
}
- _SEH_HANDLE
+ else
{
- Status = _SEH_GetExceptionCode();
+ /* No probing needed */
+ LocalName = *ObjectName;
}
- _SEH_END;
-
- if (NT_SUCCESS(Status))
+
+ /* Make sure there really is a string */
+ DPRINT("Probing OK\n");
+ if ((StringLength = LocalName.Length))
{
- DPRINT("Probing OK\n");
- _SEH_TRY
+ /* Check that the size is a valid WCHAR multiple */
+ if ((StringLength & (sizeof(WCHAR) - 1)) ||
+ /* Check that the NULL-termination below will work */
+ (StringLength == (MAXUSHORT - sizeof(WCHAR) + 1)))
{
- #if 0
- DPRINT("Probing buffer\n");
- ProbeForRead(LocalName.Buffer,
- LocalName.Length,
- sizeof(USHORT));
- #endif
+ /* PS: Please keep the checks above expanded for clarity */
+ DPRINT1("Invalid String Length\n");
+ Status = STATUS_OBJECT_NAME_INVALID;
}
- _SEH_HANDLE
+ else
{
- Status = _SEH_GetExceptionCode();
+ /* Allocate a non-paged buffer for this string */
+ DPRINT("Capturing String\n");
+ CapturedName->Length = StringLength;
+ CapturedName->MaximumLength = StringLength + sizeof(WCHAR);
+ if ((StringBuffer = ExAllocatePoolWithTag(NonPagedPool,
+ StringLength + sizeof(WCHAR),
+ OB_NAME_TAG)))
+ {
+ /* Copy the string and null-terminate it */
+ RtlMoveMemory(StringBuffer, LocalName.Buffer, StringLength);
+ StringBuffer[StringLength / sizeof(WCHAR)] = UNICODE_NULL;
+ CapturedName->Buffer = StringBuffer;
+ DPRINT("String Captured: %wZ\n", CapturedName);
+ }
+ else
+ {
+ /* Fail */
+ DPRINT1("Out of Memory!\n");
+ Status = STATUS_INSUFFICIENT_RESOURCES;
+ }
}
- _SEH_END;
- }
-
- /* Fail if anything up to here died */
- if (!NT_SUCCESS(Status))
- {
- DPRINT1("Probing failed\n");
- return Status;
}
}
- else
+ _SEH_EXCEPT(_SEH_ExSystemExceptionFilter)
{
- LocalName = *ObjectName;
- }
-
- /* Make sure there really is a string */
- DPRINT("Probing OK\n");
- if (LocalName.Length)
- {
- /* Allocate a non-paged buffer for this string */
- DPRINT("Capturing String\n");
- CapturedName->Length = LocalName.Length;
- CapturedName->MaximumLength = LocalName.Length + sizeof(WCHAR);
- CapturedName->Buffer = ExAllocatePoolWithTag(NonPagedPool,
- CapturedName->MaximumLength,
- TAG('O','b','N','m'));
-
- /* Copy the string and null-terminate it */
- RtlMoveMemory(CapturedName->Buffer, LocalName.Buffer, LocalName.Length);
- CapturedName->Buffer[LocalName.Length / sizeof(WCHAR)] = UNICODE_NULL;
- DPRINT("String Captured: %p, %wZ\n", CapturedName, CapturedName);
+ Status = _SEH_GetExceptionCode();
+
+ /* Remember to free the buffer in case of failure */
+ DPRINT1("Failed\n");
+ if (StringBuffer) ExFreePool(StringBuffer);
}
+ _SEH_END;
+ /* Return */
+ DPRINT("Returning: %lx\n", Status);
return Status;
}
DPRINT("ObpCaptureObjectAttributes\n");
RtlZeroMemory(ObjectCreateInfo, sizeof(OBJECT_CREATE_INFORMATION));
- /* Check if we got Oba */
- if (ObjectAttributes)
+ /* SEH everything here for protection */
+ _SEH_TRY
{
- if (AccessMode != KernelMode)
+ /* Check if we got Oba */
+ if (ObjectAttributes)
{
- DPRINT("Probing OBA\n");
- _SEH_TRY
+ if (AccessMode != KernelMode)
{
- /* FIXME: SMSS SENDS BULLSHIT. */
- #if 0
+ DPRINT("Probing OBA\n");
ProbeForRead(ObjectAttributes,
- sizeof(ObjectAttributes),
+ sizeof(OBJECT_ATTRIBUTES),
sizeof(ULONG));
- #endif
}
- _SEH_HANDLE
+
+ /* Validate the Size and Attributes */
+ DPRINT("Validating OBA\n");
+ if ((ObjectAttributes->Length != sizeof(OBJECT_ATTRIBUTES)) ||
+ (ObjectAttributes->Attributes & ~OBJ_VALID_ATTRIBUTES))
{
- Status = _SEH_GetExceptionCode();
+ Status = STATUS_INVALID_PARAMETER;
+ DPRINT1("Invalid Size: %lx or Attributes: %lx\n",
+ ObjectAttributes->Length, ObjectAttributes->Attributes);
+ _SEH_LEAVE;
}
- _SEH_END;
- }
-
- /* Validate the Size */
- DPRINT("Validating OBA\n");
- if (ObjectAttributes->Length != sizeof(OBJECT_ATTRIBUTES))
- {
- Status = STATUS_INVALID_PARAMETER;
- }
-
- /* Fail if SEH or Size Validation failed */
- if(!NT_SUCCESS(Status))
- {
- DPRINT1("ObpCaptureObjectAttributes failed to probe object attributes\n");
- goto fail;
- }
- /* Set some Create Info */
- DPRINT("Creating OBCI\n");
- ObjectCreateInfo->RootDirectory = ObjectAttributes->RootDirectory;
- ObjectCreateInfo->Attributes = ObjectAttributes->Attributes;
- LocalObjectName = ObjectAttributes->ObjectName;
- SecurityDescriptor = ObjectAttributes->SecurityDescriptor;
- SecurityQos = ObjectAttributes->SecurityQualityOfService;
+ /* Set some Create Info */
+ DPRINT("Creating OBCI\n");
+ ObjectCreateInfo->RootDirectory = ObjectAttributes->RootDirectory;
+ ObjectCreateInfo->Attributes = ObjectAttributes->Attributes;
+ LocalObjectName = ObjectAttributes->ObjectName;
+ SecurityDescriptor = ObjectAttributes->SecurityDescriptor;
+ SecurityQos = ObjectAttributes->SecurityQualityOfService;
- /* Validate the SD */
- if (SecurityDescriptor)
- {
- DPRINT("Probing SD: %x\n", SecurityDescriptor);
- Status = SeCaptureSecurityDescriptor(SecurityDescriptor,
- AccessMode,
- NonPagedPool,
- TRUE,
- &ObjectCreateInfo->SecurityDescriptor);
- if(!NT_SUCCESS(Status))
+ /* Validate the SD */
+ if (SecurityDescriptor)
{
- DPRINT1("Unable to capture the security descriptor!!!\n");
- ObjectCreateInfo->SecurityDescriptor = NULL;
- goto fail;
- }
+ DPRINT("Probing SD: %x\n", SecurityDescriptor);
+ Status = SeCaptureSecurityDescriptor(SecurityDescriptor,
+ AccessMode,
+ NonPagedPool,
+ TRUE,
+ &ObjectCreateInfo->SecurityDescriptor);
+ if(!NT_SUCCESS(Status))
+ {
+ DPRINT1("Unable to capture the security descriptor!!!\n");
+ ObjectCreateInfo->SecurityDescriptor = NULL;
+ _SEH_LEAVE;
+ }
- DPRINT("Probe done\n");
- ObjectCreateInfo->SecurityDescriptorCharge = 0; /* FIXME */
- ObjectCreateInfo->ProbeMode = AccessMode;
- }
+ DPRINT("Probe done\n");
+ ObjectCreateInfo->SecurityDescriptorCharge = 2048; /* FIXME */
+ ObjectCreateInfo->ProbeMode = AccessMode;
+ }
- /* Validate the QoS */
- if (SecurityQos)
- {
- if (AccessMode != KernelMode)
+ /* Validate the QoS */
+ if (SecurityQos)
{
- DPRINT("Probing QoS\n");
- _SEH_TRY
+ if (AccessMode != KernelMode)
{
+ DPRINT("Probing QoS\n");
ProbeForRead(SecurityQos,
sizeof(SECURITY_QUALITY_OF_SERVICE),
sizeof(ULONG));
}
- _SEH_HANDLE
- {
- Status = _SEH_GetExceptionCode();
- }
- _SEH_END;
- }
-
- if(!NT_SUCCESS(Status))
- {
- DPRINT1("Unable to capture QoS!!!\n");
- goto fail;
- }
- ObjectCreateInfo->SecurityQualityOfService = *SecurityQos;
- ObjectCreateInfo->SecurityQos = &ObjectCreateInfo->SecurityQualityOfService;
+ /* Save Info */
+ ObjectCreateInfo->SecurityQualityOfService = *SecurityQos;
+ ObjectCreateInfo->SecurityQos = &ObjectCreateInfo->SecurityQualityOfService;
+ }
+ }
+ else
+ {
+ LocalObjectName = NULL;
}
}
-
- /* Clear Local Object Name */
- DPRINT("Clearing name\n");
- RtlZeroMemory(ObjectName, sizeof(UNICODE_STRING));
-
- /* Now check if the Object Attributes had an Object Name */
- if (LocalObjectName)
+ _SEH_EXCEPT(_SEH_ExSystemExceptionFilter)
{
- DPRINT("Name Buffer: %x\n", LocalObjectName->Buffer);
- Status = ObpCaptureObjectName(ObjectName,
- LocalObjectName,
- AccessMode);
+ Status = _SEH_GetExceptionCode();
+ DPRINT1("Failed\n");
}
- else
+ _SEH_END;
+
+ if (NT_SUCCESS(Status))
{
- /* He can't have specified a Root Directory */
- if (ObjectCreateInfo->RootDirectory)
+ /* Now check if the Object Attributes had an Object Name */
+ if (LocalObjectName)
{
- DPRINT1("Invalid name\n");
- Status = STATUS_OBJECT_NAME_INVALID;
+ DPRINT("Name Buffer: %wZ\n", LocalObjectName);
+ Status = ObpCaptureObjectName(ObjectName,
+ LocalObjectName,
+ AccessMode);
+ }
+ else
+ {
+ /* Clear the string */
+ RtlInitUnicodeString(ObjectName, NULL);
+
+ /* He can't have specified a Root Directory */
+ if (ObjectCreateInfo->RootDirectory)
+ {
+ DPRINT1("Invalid name\n");
+ Status = STATUS_OBJECT_NAME_INVALID;
+ }
}
}
-
-fail:
- if (!NT_SUCCESS(Status))
+ else
{
DPRINT1("Failed to capture, cleaning up\n");
ObpReleaseCapturedAttributes(ObjectCreateInfo);
}
- DPRINT("Return to caller\n");
+ DPRINT("Return to caller %x\n", Status);
return Status;
}
* RETURN VALUE
*/
NTSTATUS
+NTAPI
ObFindObject(POBJECT_CREATE_INFORMATION ObjectCreateInfo,
PUNICODE_STRING ObjectName,
PVOID* ReturnedObject,
ObReferenceObjectByPointer(NameSpaceRoot,
DIRECTORY_TRAVERSE,
NULL,
- UserMode);
+ ObjectCreateInfo->ProbeMode);
CurrentObject = NameSpaceRoot;
}
else
Status = ObReferenceObjectByHandle(ObjectCreateInfo->RootDirectory,
0,
NULL,
- UserMode,
+ ObjectCreateInfo->ProbeMode,
&CurrentObject,
NULL);
if (!NT_SUCCESS(Status))
ObReferenceObjectByPointer(NextObject,
DIRECTORY_TRAVERSE,
NULL,
- UserMode);
+ ObjectCreateInfo->ProbeMode);
}
if (NextObject == NULL)
/* Capture all the info */
DPRINT("Capturing Create Info\n");
Status = ObpCaptureObjectAttributes(ObjectAttributes,
- AccessMode,
+ ObjectAttributesAccessMode,
Type,
ObjectCreateInfo,
&ObjectName);
return Status;
}
- Status = ObpCreateHandle(PsGetCurrentProcess(),
- Object,
- DesiredAccess,
- (BOOLEAN)(HandleAttributes & OBJ_INHERIT),
- Handle);
+ Status = ObpCreateHandle(Object,
+ DesiredAccess,
+ HandleAttributes,
+ Handle);
ObDereferenceObject(Object);
* Reference count.
*/
ULONG
+NTAPI
ObGetObjectHandleCount(PVOID Object)
{
POBJECT_HEADER Header;
projects / reactos.git / blobdiff