mirror of
https://github.com/reactos/reactos.git
synced 2024-08-30 23:28:58 +00:00
731 lines
19 KiB
C
731 lines
19 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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* FILE: ntoskrnl/se/srm.c
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* PURPOSE: Security Reference Monitor Server
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*
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* PROGRAMMERS: Timo Kreuzer (timo.kreuzer@reactos.org)
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*/
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/* INCLUDES *******************************************************************/
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#include <ntoskrnl.h>
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#define NDEBUG
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#include <debug.h>
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extern LUID SeSystemAuthenticationId;
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extern LUID SeAnonymousAuthenticationId;
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/* PRIVATE DEFINITIONS ********************************************************/
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#define SEP_LOGON_SESSION_TAG 'sLeS'
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typedef struct _SEP_LOGON_SESSION_REFERENCES
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{
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struct _SEP_LOGON_SESSION_REFERENCES *Next;
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LUID LogonId;
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ULONG ReferenceCount;
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ULONG Flags;
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PDEVICE_MAP pDeviceMap;
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LIST_ENTRY TokenList;
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} SEP_LOGON_SESSION_REFERENCES, *PSEP_LOGON_SESSION_REFERENCES;
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VOID
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NTAPI
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SepRmCommandServerThread(
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PVOID StartContext);
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static
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NTSTATUS
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SepRmCreateLogonSession(
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PLUID LogonLuid);
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/* GLOBALS ********************************************************************/
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HANDLE SeRmCommandPort;
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HANDLE SeLsaInitEvent;
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PVOID SepCommandPortViewBase;
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PVOID SepCommandPortViewRemoteBase;
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ULONG_PTR SepCommandPortViewBaseOffset;
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static HANDLE SepRmCommandMessagePort;
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BOOLEAN SepAdtAuditingEnabled;
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ULONG SepAdtMinListLength = 0x2000;
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ULONG SepAdtMaxListLength = 0x3000;
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#define POLICY_AUDIT_EVENT_TYPE_COUNT 9 // (AuditCategoryAccountLogon - AuditCategorySystem + 1)
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UCHAR SeAuditingState[POLICY_AUDIT_EVENT_TYPE_COUNT];
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KGUARDED_MUTEX SepRmDbLock;
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PSEP_LOGON_SESSION_REFERENCES SepLogonSessions;
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/* PRIVATE FUNCTIONS **********************************************************/
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NTSTATUS
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NTAPI
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SepRegQueryHelper(
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PCWSTR KeyName,
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PCWSTR ValueName,
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ULONG ValueType,
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ULONG DataLength,
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PVOID ValueData)
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{
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UNICODE_STRING ValueNameString;
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UNICODE_STRING KeyNameString;
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ULONG ResultLength;
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OBJECT_ATTRIBUTES ObjectAttributes;
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HANDLE KeyHandle = NULL;
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struct
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{
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KEY_VALUE_PARTIAL_INFORMATION Partial;
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UCHAR Buffer[64];
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} KeyValueInformation;
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NTSTATUS Status, CloseStatus;
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PAGED_CODE();
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RtlInitUnicodeString(&KeyNameString, KeyName);
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InitializeObjectAttributes(&ObjectAttributes,
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&KeyNameString,
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OBJ_KERNEL_HANDLE | OBJ_CASE_INSENSITIVE,
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NULL,
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NULL);
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Status = ZwOpenKey(&KeyHandle, KEY_QUERY_VALUE, &ObjectAttributes);
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if (!NT_SUCCESS(Status))
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{
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return Status;
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}
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RtlInitUnicodeString(&ValueNameString, ValueName);
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Status = ZwQueryValueKey(KeyHandle,
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&ValueNameString,
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KeyValuePartialInformation,
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&KeyValueInformation.Partial,
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sizeof(KeyValueInformation),
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&ResultLength);
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if (!NT_SUCCESS(Status))
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{
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goto Cleanup;
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}
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if ((KeyValueInformation.Partial.Type != ValueType) ||
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(KeyValueInformation.Partial.DataLength != DataLength))
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{
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Status = STATUS_OBJECT_TYPE_MISMATCH;
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goto Cleanup;
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}
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if (ValueType == REG_BINARY)
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{
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RtlCopyMemory(ValueData, KeyValueInformation.Partial.Data, DataLength);
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}
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else if (ValueType == REG_DWORD)
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{
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*(PULONG)ValueData = *(PULONG)KeyValueInformation.Partial.Data;
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}
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else
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{
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Status = STATUS_INVALID_PARAMETER;
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}
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Cleanup:
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CloseStatus = ZwClose(KeyHandle);
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ASSERT(NT_SUCCESS( CloseStatus ));
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return Status;
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}
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BOOLEAN
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NTAPI
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SeRmInitPhase0(VOID)
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{
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NTSTATUS Status;
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/* Initialize the database lock */
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KeInitializeGuardedMutex(&SepRmDbLock);
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/* Create the system logon session */
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Status = SepRmCreateLogonSession(&SeSystemAuthenticationId);
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if (!NT_VERIFY(NT_SUCCESS(Status)))
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{
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return FALSE;
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}
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/* Create the anonymous logon session */
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Status = SepRmCreateLogonSession(&SeAnonymousAuthenticationId);
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if (!NT_VERIFY(NT_SUCCESS(Status)))
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{
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return FALSE;
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}
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return TRUE;
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}
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BOOLEAN
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NTAPI
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SeRmInitPhase1(VOID)
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{
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UNICODE_STRING Name;
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OBJECT_ATTRIBUTES ObjectAttributes;
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HANDLE ThreadHandle;
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NTSTATUS Status;
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/* Create the SeRm command port */
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RtlInitUnicodeString(&Name, L"\\SeRmCommandPort");
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InitializeObjectAttributes(&ObjectAttributes, &Name, 0, NULL, NULL);
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Status = ZwCreatePort(&SeRmCommandPort,
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&ObjectAttributes,
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sizeof(ULONG),
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PORT_MAXIMUM_MESSAGE_LENGTH,
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2 * PAGE_SIZE);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("Security: Rm Create Command Port failed 0x%lx\n", Status);
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return FALSE;
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}
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/* Create SeLsaInitEvent */
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RtlInitUnicodeString(&Name, L"\\SeLsaInitEvent");
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InitializeObjectAttributes(&ObjectAttributes, &Name, 0, NULL, NULL);
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Status = ZwCreateEvent(&SeLsaInitEvent,
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GENERIC_WRITE,
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&ObjectAttributes,
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NotificationEvent,
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FALSE);
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if (!NT_VERIFY((NT_SUCCESS(Status))))
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{
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DPRINT1("Security: LSA init event creation failed.0x%xl\n", Status);
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return FALSE;
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}
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/* Create the SeRm server thread */
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Status = PsCreateSystemThread(&ThreadHandle,
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THREAD_ALL_ACCESS,
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NULL,
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NULL,
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NULL,
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SepRmCommandServerThread,
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NULL);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("Security: Rm Server Thread creation failed 0x%lx\n", Status);
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return FALSE;
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}
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ObCloseHandle(ThreadHandle, KernelMode);
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return TRUE;
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}
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static
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VOID
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SepAdtInitializeBounds(VOID)
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{
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struct
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{
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ULONG MaxLength;
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ULONG MinLength;
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} ListBounds;
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NTSTATUS Status;
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PAGED_CODE();
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Status = SepRegQueryHelper(L"\\Registry\\Machine\\System\\CurrentControlSet\\Control\\Lsa",
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L"Bounds",
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REG_BINARY,
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sizeof(ListBounds),
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&ListBounds);
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if (!NT_SUCCESS(Status))
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{
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/* No registry values, so keep hardcoded defaults */
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return;
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}
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/* Check if the bounds are valid */
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if ((ListBounds.MaxLength < ListBounds.MinLength) ||
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(ListBounds.MinLength < 16) ||
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(ListBounds.MaxLength - ListBounds.MinLength < 16))
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{
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DPRINT1("ListBounds are invalid: %u, %u\n",
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ListBounds.MinLength, ListBounds.MaxLength);
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return;
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}
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/* Set the new bounds globally */
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SepAdtMinListLength = ListBounds.MinLength;
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SepAdtMaxListLength = ListBounds.MaxLength;
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}
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static
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NTSTATUS
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SepRmSetAuditEvent(
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PSEP_RM_API_MESSAGE Message)
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{
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ULONG i;
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PAGED_CODE();
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/* First re-initialize the bounds from the registry */
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SepAdtInitializeBounds();
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/* Make sure we have the right message and clear */
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ASSERT(Message->ApiNumber == RmAuditSetCommand);
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Message->ApiNumber = 0;
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/* Store the enable flag in the global variable */
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SepAdtAuditingEnabled = Message->u.SetAuditEvent.Enabled;
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/* Loop all audit event types */
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for (i = 0; i < POLICY_AUDIT_EVENT_TYPE_COUNT; i++)
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{
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/* Save the provided flags in the global array */
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SeAuditingState[i] = (UCHAR)Message->u.SetAuditEvent.Flags[i];
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}
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return STATUS_SUCCESS;
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}
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static
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NTSTATUS
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SepRmCreateLogonSession(
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PLUID LogonLuid)
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{
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PSEP_LOGON_SESSION_REFERENCES CurrentSession, NewSession;
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NTSTATUS Status;
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PAGED_CODE();
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DPRINT("SepRmCreateLogonSession(%08lx:%08lx)\n",
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LogonLuid->HighPart, LogonLuid->LowPart);
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/* Allocate a new session structure */
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NewSession = ExAllocatePoolWithTag(PagedPool,
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sizeof(SEP_LOGON_SESSION_REFERENCES),
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SEP_LOGON_SESSION_TAG);
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if (NewSession == NULL)
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{
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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/* Initialize it */
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NewSession->LogonId = *LogonLuid;
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NewSession->ReferenceCount = 0;
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NewSession->Flags = 0;
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NewSession->pDeviceMap = NULL;
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InitializeListHead(&NewSession->TokenList);
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/* Acquire the database lock */
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KeAcquireGuardedMutex(&SepRmDbLock);
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/* Loop all existing sessions */
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for (CurrentSession = SepLogonSessions;
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CurrentSession != NULL;
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CurrentSession = CurrentSession->Next)
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{
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/* Check if the LUID matches the new one */
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if (RtlEqualLuid(&CurrentSession->LogonId, LogonLuid))
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{
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Status = STATUS_LOGON_SESSION_EXISTS;
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goto Leave;
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}
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}
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/* Insert the new session */
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NewSession->Next = SepLogonSessions;
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SepLogonSessions = NewSession;
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Status = STATUS_SUCCESS;
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Leave:
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/* Release the database lock */
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KeReleaseGuardedMutex(&SepRmDbLock);
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if (!NT_SUCCESS(Status))
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{
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ExFreePoolWithTag(NewSession, SEP_LOGON_SESSION_TAG);
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}
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return Status;
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}
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static
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NTSTATUS
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SepRmDeleteLogonSession(
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PLUID LogonLuid)
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{
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DPRINT("SepRmDeleteLogonSession(%08lx:%08lx)\n",
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LogonLuid->HighPart, LogonLuid->LowPart);
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UNIMPLEMENTED;
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NT_ASSERT(FALSE);
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return STATUS_NOT_IMPLEMENTED;
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}
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NTSTATUS
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SepRmReferenceLogonSession(
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PLUID LogonLuid)
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{
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PSEP_LOGON_SESSION_REFERENCES CurrentSession;
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PAGED_CODE();
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DPRINT("SepRmReferenceLogonSession(%08lx:%08lx)\n",
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LogonLuid->HighPart, LogonLuid->LowPart);
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/* Acquire the database lock */
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KeAcquireGuardedMutex(&SepRmDbLock);
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/* Loop all existing sessions */
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for (CurrentSession = SepLogonSessions;
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CurrentSession != NULL;
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CurrentSession = CurrentSession->Next)
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{
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/* Check if the LUID matches the new one */
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if (RtlEqualLuid(&CurrentSession->LogonId, LogonLuid))
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{
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/* Reference the session */
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CurrentSession->ReferenceCount += 1;
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DPRINT("ReferenceCount: %lu\n", CurrentSession->ReferenceCount);
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/* Release the database lock */
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KeReleaseGuardedMutex(&SepRmDbLock);
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return STATUS_SUCCESS;
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}
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}
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/* Release the database lock */
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KeReleaseGuardedMutex(&SepRmDbLock);
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return STATUS_NO_SUCH_LOGON_SESSION;
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}
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NTSTATUS
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SepRmDereferenceLogonSession(
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PLUID LogonLuid)
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{
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PSEP_LOGON_SESSION_REFERENCES CurrentSession;
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DPRINT("SepRmDereferenceLogonSession(%08lx:%08lx)\n",
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LogonLuid->HighPart, LogonLuid->LowPart);
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/* Acquire the database lock */
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KeAcquireGuardedMutex(&SepRmDbLock);
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/* Loop all existing sessions */
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for (CurrentSession = SepLogonSessions;
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CurrentSession != NULL;
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CurrentSession = CurrentSession->Next)
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{
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/* Check if the LUID matches the new one */
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if (RtlEqualLuid(&CurrentSession->LogonId, LogonLuid))
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{
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/* Dereference the session */
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CurrentSession->ReferenceCount -= 1;
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DPRINT("ReferenceCount: %lu\n", CurrentSession->ReferenceCount);
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/* Release the database lock */
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KeReleaseGuardedMutex(&SepRmDbLock);
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return STATUS_SUCCESS;
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}
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}
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/* Release the database lock */
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KeReleaseGuardedMutex(&SepRmDbLock);
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return STATUS_NO_SUCH_LOGON_SESSION;
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}
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BOOLEAN
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NTAPI
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SepRmCommandServerThreadInit(VOID)
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{
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SECURITY_QUALITY_OF_SERVICE SecurityQos;
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SEP_RM_API_MESSAGE Message;
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UNICODE_STRING PortName;
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REMOTE_PORT_VIEW RemotePortView;
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PORT_VIEW PortView;
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LARGE_INTEGER SectionSize;
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HANDLE SectionHandle;
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HANDLE PortHandle;
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NTSTATUS Status;
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BOOLEAN Result;
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SectionHandle = NULL;
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PortHandle = NULL;
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/* Assume success */
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Result = TRUE;
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/* Wait until LSASS is ready */
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Status = ZwWaitForSingleObject(SeLsaInitEvent, FALSE, NULL);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("Security Rm Init: Waiting for LSA Init Event failed 0x%lx\n", Status);
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goto Cleanup;
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}
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/* We don't need this event anymore */
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ObCloseHandle(SeLsaInitEvent, KernelMode);
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|
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/* Initialize the connection message */
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Message.Header.u1.s1.TotalLength = sizeof(Message);
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Message.Header.u1.s1.DataLength = 0;
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|
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/* Only LSASS can connect, so handle the connection right now */
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Status = ZwListenPort(SeRmCommandPort, &Message.Header);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("Security Rm Init: Listen to Command Port failed 0x%lx\n", Status);
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goto Cleanup;
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}
|
|
|
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/* Set the Port View structure length */
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RemotePortView.Length = sizeof(RemotePortView);
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|
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/* Accept the connection */
|
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Status = ZwAcceptConnectPort(&SepRmCommandMessagePort,
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NULL,
|
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&Message.Header,
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TRUE,
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NULL,
|
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&RemotePortView);
|
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("Security Rm Init: Accept Connect to Command Port failed 0x%lx\n", Status);
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goto Cleanup;
|
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}
|
|
|
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/* Complete the connection */
|
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Status = ZwCompleteConnectPort(SepRmCommandMessagePort);
|
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if (!NT_SUCCESS(Status))
|
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{
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DPRINT1("Security Rm Init: Complete Connect to Command Port failed 0x%lx\n", Status);
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goto Cleanup;
|
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}
|
|
|
|
/* Create a section for messages */
|
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SectionSize.QuadPart = PAGE_SIZE;
|
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Status = ZwCreateSection(&SectionHandle,
|
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SECTION_ALL_ACCESS,
|
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NULL,
|
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&SectionSize,
|
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PAGE_READWRITE,
|
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SEC_COMMIT,
|
|
NULL);
|
|
if (!NT_SUCCESS(Status))
|
|
{
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DPRINT1("Security Rm Init: Create Memory Section for LSA port failed: %X\n", Status);
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goto Cleanup;
|
|
}
|
|
|
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/* Setup the PORT_VIEW structure */
|
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PortView.Length = sizeof(PortView);
|
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PortView.SectionHandle = SectionHandle;
|
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PortView.SectionOffset = 0;
|
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PortView.ViewSize = SectionSize.LowPart;
|
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PortView.ViewBase = NULL;
|
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PortView.ViewRemoteBase = NULL;
|
|
|
|
/* Setup security QOS */
|
|
SecurityQos.Length = sizeof(SecurityQos);
|
|
SecurityQos.ImpersonationLevel = SecurityImpersonation;
|
|
SecurityQos.ContextTrackingMode = SECURITY_DYNAMIC_TRACKING;
|
|
SecurityQos.EffectiveOnly = TRUE;
|
|
|
|
/* Connect to LSASS */
|
|
RtlInitUnicodeString(&PortName, L"\\SeLsaCommandPort");
|
|
Status = ZwConnectPort(&PortHandle,
|
|
&PortName,
|
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&SecurityQos,
|
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&PortView,
|
|
NULL,
|
|
0,
|
|
0,
|
|
0);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
DPRINT1("Security Rm Init: Connect to LSA Port failed 0x%lx\n", Status);
|
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goto Cleanup;
|
|
}
|
|
|
|
/* Remember section base and view offset */
|
|
SepCommandPortViewBase = PortView.ViewBase;
|
|
SepCommandPortViewRemoteBase = PortView.ViewRemoteBase;
|
|
SepCommandPortViewBaseOffset = (ULONG_PTR)SepCommandPortViewRemoteBase -
|
|
(ULONG_PTR)SepCommandPortViewBase;
|
|
|
|
DPRINT("SepRmCommandServerThreadInit: done\n");
|
|
|
|
Cleanup:
|
|
/* Check for failure */
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
if (PortHandle != NULL)
|
|
{
|
|
ObCloseHandle(PortHandle, KernelMode);
|
|
}
|
|
|
|
Result = FALSE;
|
|
}
|
|
|
|
/* Did we create a section? */
|
|
if (SectionHandle != NULL)
|
|
{
|
|
ObCloseHandle(SectionHandle, KernelMode);
|
|
}
|
|
|
|
return Result;
|
|
}
|
|
|
|
VOID
|
|
NTAPI
|
|
SepRmCommandServerThread(
|
|
PVOID StartContext)
|
|
{
|
|
SEP_RM_API_MESSAGE Message;
|
|
PPORT_MESSAGE ReplyMessage;
|
|
HANDLE DummyPortHandle;
|
|
NTSTATUS Status;
|
|
|
|
/* Initialize the server thread */
|
|
if (!SepRmCommandServerThreadInit())
|
|
{
|
|
DPRINT1("Security: Terminating Rm Command Server Thread\n");
|
|
return;
|
|
}
|
|
|
|
/* No reply yet */
|
|
ReplyMessage = NULL;
|
|
|
|
/* Start looping */
|
|
while (TRUE)
|
|
{
|
|
/* Wait for a message */
|
|
Status = ZwReplyWaitReceivePort(SepRmCommandMessagePort,
|
|
NULL,
|
|
ReplyMessage,
|
|
&Message.Header);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
DPRINT1("Failed to get message: 0x%lx", Status);
|
|
ReplyMessage = NULL;
|
|
continue;
|
|
}
|
|
|
|
/* Check if this is a connection request */
|
|
if (Message.Header.u2.s2.Type == LPC_CONNECTION_REQUEST)
|
|
{
|
|
/* Reject connection request */
|
|
ZwAcceptConnectPort(&DummyPortHandle,
|
|
NULL,
|
|
&Message.Header,
|
|
FALSE,
|
|
NULL,
|
|
NULL);
|
|
|
|
/* Start over */
|
|
ReplyMessage = NULL;
|
|
continue;
|
|
}
|
|
|
|
/* Check if the port died */
|
|
if ((Message.Header.u2.s2.Type == LPC_PORT_CLOSED) ||
|
|
(Message.Header.u2.s2.Type == LPC_CLIENT_DIED))
|
|
{
|
|
/* LSASS is dead, so let's quit as well */
|
|
break;
|
|
}
|
|
|
|
/* Check if this is an actual request */
|
|
if (Message.Header.u2.s2.Type != LPC_REQUEST)
|
|
{
|
|
DPRINT1("SepRmCommandServerThread: unexpected message type: 0x%lx\n",
|
|
Message.Header.u2.s2.Type);
|
|
|
|
/* Restart without replying */
|
|
ReplyMessage = NULL;
|
|
continue;
|
|
}
|
|
|
|
ReplyMessage = &Message.Header;
|
|
|
|
switch (Message.ApiNumber)
|
|
{
|
|
case RmAuditSetCommand:
|
|
Status = SepRmSetAuditEvent(&Message);
|
|
break;
|
|
|
|
case RmCreateLogonSession:
|
|
Status = SepRmCreateLogonSession(&Message.u.LogonLuid);
|
|
break;
|
|
|
|
case RmDeleteLogonSession:
|
|
Status = SepRmDeleteLogonSession(&Message.u.LogonLuid);
|
|
break;
|
|
|
|
default:
|
|
DPRINT1("SepRmDispatchRequest: invalid API number: 0x%lx\n",
|
|
Message.ApiNumber);
|
|
ReplyMessage = NULL;
|
|
}
|
|
|
|
Message.u.ResultStatus = Status;
|
|
}
|
|
|
|
/* Close the port handles */
|
|
ObCloseHandle(SepRmCommandMessagePort, KernelMode);
|
|
ObCloseHandle(SeRmCommandPort, KernelMode);
|
|
}
|
|
|
|
|
|
/* PUBLIC FUNCTIONS ***********************************************************/
|
|
|
|
/*
|
|
* @unimplemented
|
|
*/
|
|
NTSTATUS
|
|
NTAPI
|
|
SeMarkLogonSessionForTerminationNotification(
|
|
IN PLUID LogonId)
|
|
{
|
|
UNIMPLEMENTED;
|
|
return STATUS_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
|
|
/*
|
|
* @unimplemented
|
|
*/
|
|
NTSTATUS
|
|
NTAPI
|
|
SeRegisterLogonSessionTerminatedRoutine(
|
|
IN PSE_LOGON_SESSION_TERMINATED_ROUTINE CallbackRoutine)
|
|
{
|
|
UNIMPLEMENTED;
|
|
return STATUS_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
|
|
/*
|
|
* @unimplemented
|
|
*/
|
|
NTSTATUS
|
|
NTAPI
|
|
SeUnregisterLogonSessionTerminatedRoutine(
|
|
IN PSE_LOGON_SESSION_TERMINATED_ROUTINE CallbackRoutine)
|
|
{
|
|
UNIMPLEMENTED;
|
|
return STATUS_NOT_IMPLEMENTED;
|
|
}
|