mirror of
https://github.com/reactos/reactos.git
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616 lines
16 KiB
C
616 lines
16 KiB
C
/*
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* PROJECT: Local Security Authority Server DLL
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* LICENSE: GPL - See COPYING in the top level directory
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* FILE: dll/win32/samsrv/database.c
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* PURPOSE: SAM object database
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* COPYRIGHT: Copyright 2012 Eric Kohl
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*/
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#include "samsrv.h"
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/* GLOBALS *****************************************************************/
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static HANDLE SamKeyHandle = NULL;
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/* FUNCTIONS ***************************************************************/
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NTSTATUS
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SampInitDatabase(VOID)
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{
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NTSTATUS Status;
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TRACE("SampInitDatabase()\n");
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Status = SampRegOpenKey(NULL,
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L"\\Registry\\Machine\\SAM",
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KEY_READ | KEY_CREATE_SUB_KEY | KEY_ENUMERATE_SUB_KEYS,
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&SamKeyHandle);
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if (!NT_SUCCESS(Status))
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{
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ERR("Failed to open the SAM key (Status: 0x%08lx)\n", Status);
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return Status;
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}
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TRACE("SampInitDatabase() done\n");
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return STATUS_SUCCESS;
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}
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NTSTATUS
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SampCreateDbObject(IN PSAM_DB_OBJECT ParentObject,
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IN LPWSTR ContainerName,
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IN LPWSTR ObjectName,
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IN ULONG RelativeId,
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IN SAM_DB_OBJECT_TYPE ObjectType,
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IN ACCESS_MASK DesiredAccess,
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OUT PSAM_DB_OBJECT *DbObject)
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{
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PSAM_DB_OBJECT NewObject = NULL;
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HANDLE ParentKeyHandle;
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HANDLE ContainerKeyHandle = NULL;
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HANDLE ObjectKeyHandle = NULL;
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HANDLE MembersKeyHandle = NULL;
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NTSTATUS Status;
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if (DbObject == NULL)
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return STATUS_INVALID_PARAMETER;
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*DbObject = NULL;
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if (ParentObject == NULL)
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ParentKeyHandle = SamKeyHandle;
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else
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ParentKeyHandle = ParentObject->KeyHandle;
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if (ContainerName != NULL)
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{
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/* Open the container key */
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Status = SampRegOpenKey(ParentKeyHandle,
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ContainerName,
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KEY_ALL_ACCESS,
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&ContainerKeyHandle);
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if (!NT_SUCCESS(Status))
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{
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goto done;
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}
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/* Create the object key */
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Status = SampRegCreateKey(ContainerKeyHandle,
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ObjectName,
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KEY_ALL_ACCESS,
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&ObjectKeyHandle);
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if (!NT_SUCCESS(Status))
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{
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goto done;
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}
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if (ObjectType == SamDbAliasObject)
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{
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/* Create the object key */
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Status = SampRegCreateKey(ContainerKeyHandle,
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L"Members",
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KEY_ALL_ACCESS,
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&MembersKeyHandle);
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if (!NT_SUCCESS(Status))
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{
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goto done;
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}
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}
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}
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else
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{
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/* Create the object key */
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Status = SampRegCreateKey(ParentKeyHandle,
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ObjectName,
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KEY_ALL_ACCESS,
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&ObjectKeyHandle);
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if (!NT_SUCCESS(Status))
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{
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goto done;
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}
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}
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NewObject = RtlAllocateHeap(RtlGetProcessHeap(),
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HEAP_ZERO_MEMORY,
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sizeof(SAM_DB_OBJECT));
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if (NewObject == NULL)
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{
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Status = STATUS_INSUFFICIENT_RESOURCES;
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goto done;
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}
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NewObject->Name = RtlAllocateHeap(RtlGetProcessHeap(),
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0,
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(wcslen(ObjectName) + 1) * sizeof(WCHAR));
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if (NewObject->Name == NULL)
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{
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Status = STATUS_INSUFFICIENT_RESOURCES;
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goto done;
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}
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wcscpy(NewObject->Name, ObjectName);
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NewObject->Signature = SAMP_DB_SIGNATURE;
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NewObject->RefCount = 1;
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NewObject->ObjectType = ObjectType;
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NewObject->Access = DesiredAccess;
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NewObject->KeyHandle = ObjectKeyHandle;
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NewObject->MembersKeyHandle = MembersKeyHandle;
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NewObject->RelativeId = RelativeId;
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NewObject->ParentObject = ParentObject;
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if (ParentObject != NULL)
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NewObject->Trusted = ParentObject->Trusted;
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*DbObject = NewObject;
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done:
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if (!NT_SUCCESS(Status))
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{
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if (NewObject != NULL)
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{
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if (NewObject->Name != NULL)
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RtlFreeHeap(RtlGetProcessHeap(), 0, NewObject->Name);
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RtlFreeHeap(RtlGetProcessHeap(), 0, NewObject);
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}
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SampRegCloseKey(&MembersKeyHandle);
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SampRegCloseKey(&ObjectKeyHandle);
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}
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SampRegCloseKey(&ContainerKeyHandle);
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return Status;
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}
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NTSTATUS
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SampOpenDbObject(IN PSAM_DB_OBJECT ParentObject,
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IN LPWSTR ContainerName,
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IN LPWSTR ObjectName,
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IN ULONG RelativeId,
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IN SAM_DB_OBJECT_TYPE ObjectType,
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IN ACCESS_MASK DesiredAccess,
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OUT PSAM_DB_OBJECT *DbObject)
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{
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PSAM_DB_OBJECT NewObject = NULL;
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HANDLE ParentKeyHandle;
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HANDLE ContainerKeyHandle = NULL;
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HANDLE ObjectKeyHandle = NULL;
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HANDLE MembersKeyHandle = NULL;
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NTSTATUS Status;
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if (DbObject == NULL)
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return STATUS_INVALID_PARAMETER;
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*DbObject = NULL;
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if (ParentObject == NULL)
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ParentKeyHandle = SamKeyHandle;
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else
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ParentKeyHandle = ParentObject->KeyHandle;
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if (ContainerName != NULL)
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{
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/* Open the container key */
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Status = SampRegOpenKey(ParentKeyHandle,
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ContainerName,
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KEY_ALL_ACCESS,
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&ContainerKeyHandle);
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if (!NT_SUCCESS(Status))
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{
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goto done;
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}
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/* Open the object key */
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Status = SampRegOpenKey(ContainerKeyHandle,
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ObjectName,
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KEY_ALL_ACCESS,
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&ObjectKeyHandle);
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if (!NT_SUCCESS(Status))
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{
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goto done;
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}
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if (ObjectType == SamDbAliasObject)
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{
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/* Open the object key */
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Status = SampRegOpenKey(ContainerKeyHandle,
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L"Members",
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KEY_ALL_ACCESS,
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&MembersKeyHandle);
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if (!NT_SUCCESS(Status))
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{
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goto done;
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}
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}
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}
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else
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{
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/* Open the object key */
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Status = SampRegOpenKey(ParentKeyHandle,
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ObjectName,
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KEY_ALL_ACCESS,
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&ObjectKeyHandle);
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if (!NT_SUCCESS(Status))
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{
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goto done;
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}
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}
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NewObject = RtlAllocateHeap(RtlGetProcessHeap(),
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HEAP_ZERO_MEMORY,
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sizeof(SAM_DB_OBJECT));
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if (NewObject == NULL)
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{
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Status = STATUS_INSUFFICIENT_RESOURCES;
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goto done;
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}
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NewObject->Name = RtlAllocateHeap(RtlGetProcessHeap(),
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0,
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(wcslen(ObjectName) + 1) * sizeof(WCHAR));
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if (NewObject->Name == NULL)
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{
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Status = STATUS_INSUFFICIENT_RESOURCES;
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goto done;
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}
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wcscpy(NewObject->Name, ObjectName);
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NewObject->Signature = SAMP_DB_SIGNATURE;
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NewObject->RefCount = 1;
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NewObject->ObjectType = ObjectType;
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NewObject->Access = DesiredAccess;
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NewObject->KeyHandle = ObjectKeyHandle;
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NewObject->MembersKeyHandle = MembersKeyHandle;
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NewObject->RelativeId = RelativeId;
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NewObject->ParentObject = ParentObject;
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if (ParentObject != NULL)
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NewObject->Trusted = ParentObject->Trusted;
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*DbObject = NewObject;
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done:
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if (!NT_SUCCESS(Status))
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{
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if (NewObject != NULL)
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{
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if (NewObject->Name != NULL)
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RtlFreeHeap(RtlGetProcessHeap(), 0, NewObject->Name);
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RtlFreeHeap(RtlGetProcessHeap(), 0, NewObject);
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}
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SampRegCloseKey(&MembersKeyHandle);
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SampRegCloseKey(&ObjectKeyHandle);
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}
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SampRegCloseKey(&ContainerKeyHandle);
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return Status;
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}
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NTSTATUS
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SampValidateDbObject(SAMPR_HANDLE Handle,
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SAM_DB_OBJECT_TYPE ObjectType,
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ACCESS_MASK DesiredAccess,
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PSAM_DB_OBJECT *DbObject)
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{
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PSAM_DB_OBJECT LocalObject = (PSAM_DB_OBJECT)Handle;
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BOOLEAN bValid = FALSE;
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_SEH2_TRY
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{
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if (LocalObject->Signature == SAMP_DB_SIGNATURE)
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{
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if ((ObjectType == SamDbIgnoreObject) ||
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(LocalObject->ObjectType == ObjectType))
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bValid = TRUE;
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}
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}
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_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
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{
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bValid = FALSE;
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}
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_SEH2_END;
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if (bValid == FALSE)
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return STATUS_INVALID_HANDLE;
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if (DesiredAccess != 0)
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{
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/* Check for granted access rights */
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if ((LocalObject->Access & DesiredAccess) != DesiredAccess)
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{
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ERR("SampValidateDbObject access check failed %08lx %08lx\n",
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LocalObject->Access, DesiredAccess);
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return STATUS_ACCESS_DENIED;
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}
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}
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if (DbObject != NULL)
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*DbObject = LocalObject;
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return STATUS_SUCCESS;
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}
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NTSTATUS
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SampCloseDbObject(PSAM_DB_OBJECT DbObject)
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{
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NTSTATUS Status = STATUS_SUCCESS;
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DbObject->RefCount--;
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if (DbObject->RefCount > 0)
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return STATUS_SUCCESS;
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SampRegCloseKey(&DbObject->KeyHandle);
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SampRegCloseKey(&DbObject->MembersKeyHandle);
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if (DbObject->Name != NULL)
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RtlFreeHeap(RtlGetProcessHeap(), 0, DbObject->Name);
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RtlFreeHeap(RtlGetProcessHeap(), 0, DbObject);
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return Status;
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}
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NTSTATUS
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SampDeleteAccountDbObject(PSAM_DB_OBJECT DbObject)
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{
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LPCWSTR ContainerName;
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LPWSTR AccountName = NULL;
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HANDLE ContainerKey = NULL;
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HANDLE NamesKey = NULL;
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ULONG Length = 0;
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NTSTATUS Status = STATUS_SUCCESS;
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TRACE("(%p)\n", DbObject);
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/* Server and Domain objects cannot be deleted */
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switch (DbObject->ObjectType)
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{
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case SamDbAliasObject:
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ContainerName = L"Aliases";
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break;
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case SamDbGroupObject:
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ContainerName = L"Groups";
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break;
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case SamDbUserObject:
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ContainerName = L"Users";
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break;
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default:
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return STATUS_INVALID_PARAMETER;
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}
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/* Get the account name */
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Status = SampGetObjectAttribute(DbObject,
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L"Name",
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NULL,
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NULL,
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&Length);
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if (!NT_SUCCESS(Status) && Status != STATUS_BUFFER_OVERFLOW)
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{
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TRACE("SampGetObjectAttribute failed (Status 0x%08lx)\n", Status);
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goto done;
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}
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AccountName = RtlAllocateHeap(RtlGetProcessHeap(),
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HEAP_ZERO_MEMORY,
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Length);
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if (AccountName == NULL)
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{
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Status = STATUS_INSUFFICIENT_RESOURCES;
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goto done;
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}
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Status = SampGetObjectAttribute(DbObject,
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L"Name",
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NULL,
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(PVOID)AccountName,
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&Length);
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if (!NT_SUCCESS(Status))
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{
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TRACE("SampGetObjectAttribute failed (Status 0x%08lx)\n", Status);
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goto done;
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}
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SampRegCloseKey(&DbObject->KeyHandle);
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if (DbObject->ObjectType == SamDbAliasObject)
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{
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SampRegCloseKey(&DbObject->MembersKeyHandle);
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SampRegDeleteKey(DbObject->KeyHandle,
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L"Members");
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}
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/* Open the domain container key */
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Status = SampRegOpenKey(DbObject->ParentObject->KeyHandle,
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ContainerName,
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DELETE | KEY_SET_VALUE,
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&ContainerKey);
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if (!NT_SUCCESS(Status))
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{
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TRACE("SampRegOpenKey failed (Status 0x%08lx)\n", Status);
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goto done;
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}
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/* Open the Names key */
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Status = SampRegOpenKey(ContainerKey,
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L"Names",
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KEY_SET_VALUE,
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&NamesKey);
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if (!NT_SUCCESS(Status))
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{
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TRACE("SampRegOpenKey failed (Status 0x%08lx)\n", Status);
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goto done;
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}
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/* Remove the account from the Names key */
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Status = SampRegDeleteValue(NamesKey,
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AccountName);
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if (!NT_SUCCESS(Status))
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{
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TRACE("SampRegDeleteValue failed (Status 0x%08lx)\n", Status);
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goto done;
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}
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/* Remove the account key from the container */
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Status = SampRegDeleteKey(ContainerKey,
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DbObject->Name);
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if (!NT_SUCCESS(Status))
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{
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TRACE("SampRegDeleteKey failed (Status 0x%08lx)\n", Status);
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goto done;
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}
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/* Release the database object name */
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if (DbObject->Name != NULL)
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RtlFreeHeap(RtlGetProcessHeap(), 0, DbObject->Name);
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/* Release the database object */
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RtlFreeHeap(RtlGetProcessHeap(), 0, DbObject);
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Status = STATUS_SUCCESS;
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done:
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SampRegCloseKey(&NamesKey);
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SampRegCloseKey(&ContainerKey);
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if (AccountName != NULL)
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RtlFreeHeap(RtlGetProcessHeap(), 0, AccountName);
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return Status;
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}
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NTSTATUS
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SampSetObjectAttribute(PSAM_DB_OBJECT DbObject,
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LPWSTR AttributeName,
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ULONG AttributeType,
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LPVOID AttributeData,
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ULONG AttributeSize)
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{
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return SampRegSetValue(DbObject->KeyHandle,
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AttributeName,
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AttributeType,
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AttributeData,
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AttributeSize);
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}
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NTSTATUS
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SampGetObjectAttribute(PSAM_DB_OBJECT DbObject,
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LPWSTR AttributeName,
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PULONG AttributeType,
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LPVOID AttributeData,
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PULONG AttributeSize)
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{
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return SampRegQueryValue(DbObject->KeyHandle,
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AttributeName,
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AttributeType,
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AttributeData,
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AttributeSize);
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}
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NTSTATUS
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SampGetObjectAttributeString(PSAM_DB_OBJECT DbObject,
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LPWSTR AttributeName,
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PRPC_UNICODE_STRING String)
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{
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ULONG Length = 0;
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NTSTATUS Status;
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Status = SampGetObjectAttribute(DbObject,
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AttributeName,
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NULL,
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NULL,
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&Length);
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if (!NT_SUCCESS(Status) && Status != STATUS_BUFFER_OVERFLOW)
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{
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TRACE("Status 0x%08lx\n", Status);
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goto done;
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}
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if (Length == 0)
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{
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String->Length = 0;
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String->MaximumLength = 0;
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String->Buffer = NULL;
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Status = STATUS_SUCCESS;
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goto done;
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}
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String->Length = (USHORT)(Length - sizeof(WCHAR));
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String->MaximumLength = (USHORT)Length;
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String->Buffer = midl_user_allocate(Length);
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if (String->Buffer == NULL)
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{
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Status = STATUS_INSUFFICIENT_RESOURCES;
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goto done;
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}
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TRACE("Length: %lu\n", Length);
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Status = SampGetObjectAttribute(DbObject,
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AttributeName,
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NULL,
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(PVOID)String->Buffer,
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&Length);
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if (!NT_SUCCESS(Status))
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{
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TRACE("Status 0x%08lx\n", Status);
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goto done;
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}
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done:
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if (!NT_SUCCESS(Status))
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{
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if (String->Buffer != NULL)
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{
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midl_user_free(String->Buffer);
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String->Buffer = NULL;
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}
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}
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return Status;
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}
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NTSTATUS
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SampSetObjectAttributeString(PSAM_DB_OBJECT DbObject,
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LPWSTR AttributeName,
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PRPC_UNICODE_STRING String)
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{
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PWCHAR Buffer = NULL;
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USHORT Length = 0;
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if ((String != NULL) && (String->Buffer != NULL))
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{
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Buffer = String->Buffer;
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Length = String->Length + sizeof(WCHAR);
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}
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return SampSetObjectAttribute(DbObject,
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AttributeName,
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REG_SZ,
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Buffer,
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Length);
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}
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/* EOF */
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|