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518 lines
12 KiB
518 lines
12 KiB
/*++
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Copyright (c) 1998 Microsoft Corporation
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Module Name:
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LSAWMI.C
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Abstract:
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Implement LSA Server event tracing by using WMI trace infrastructure.
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Author:
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16-March-1999 kumarp
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Revision History:
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--*/
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#include <lsapch2.h>
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#include <wmistr.h>
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#define INITGUID
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#include <lsawmi.h>
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//
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// Globals
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//
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ULONG LsapEventTraceFlag = FALSE;
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TRACEHANDLE LsapTraceRegistrationHandle = (TRACEHANDLE) 0;
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TRACEHANDLE LsapTraceLoggerHandle = (TRACEHANDLE) 0;
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//
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// Forward declaration
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//
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ULONG
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LsapTraceControlCallBack(
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IN WMIDPREQUESTCODE RequestCode,
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IN PVOID RequestContext,
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IN OUT ULONG *InOutBufferSize,
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IN OUT PVOID Buffer
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);
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LPWSTR
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LsapMakeNullTerminatedString(
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IN PUNICODE_STRING u
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);
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//
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// before you change the elements of the following structure,
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// read notes in lsawmi.h file
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//
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TRACE_GUID_REGISTRATION LsapTraceGuids[] =
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{
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{&LsapTraceEventGuid_QuerySecret, NULL},
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{&LsaTraceEventGuid_Close, NULL},
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{&LsaTraceEventGuid_OpenPolicy, NULL},
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{&LsaTraceEventGuid_QueryInformationPolicy, NULL},
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{&LsaTraceEventGuid_SetInformationPolicy, NULL},
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{&LsaTraceEventGuid_EnumerateTrustedDomains, NULL},
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{&LsaTraceEventGuid_LookupNames, NULL},
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{&LsaTraceEventGuid_LookupSids, NULL},
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{&LsaTraceEventGuid_OpenTrustedDomain, NULL},
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{&LsaTraceEventGuid_QueryInfoTrustedDomain, NULL},
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{&LsaTraceEventGuid_SetInformationTrustedDomain, NULL},
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{&LsaTraceEventGuid_QueryTrustedDomainInfoByName, NULL},
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{&LsaTraceEventGuid_SetTrustedDomainInfoByName, NULL},
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{&LsaTraceEventGuid_EnumerateTrustedDomainsEx, NULL},
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{&LsaTraceEventGuid_CreateTrustedDomainEx, NULL},
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{&LsaTraceEventGuid_QueryDomainInformationPolicy, NULL},
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{&LsaTraceEventGuid_SetDomainInformationPolicy, NULL},
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{&LsaTraceEventGuid_OpenTrustedDomainByName, NULL},
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{&LsaTraceEventGuid_QueryForestTrustInformation, NULL},
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{&LsaTraceEventGuid_SetForestTrustInformation, NULL},
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{&LsaTraceEventGuid_LookupIsolatedNameInTrustedDomains, NULL},
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};
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#define LsapTraceGuidCount (sizeof(LsapTraceGuids) / sizeof(TRACE_GUID_REGISTRATION))
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ULONG
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_stdcall
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LsapInitializeWmiTrace( LPVOID ThreadParams )
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/*++
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Routine Description:
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Register WMI Trace Guids.
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This routine is called during LSA initialization. LSA gets initialized
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before WMI therefore we call this from a seaprate thread. This
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thread can then wait on WMI.
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Parameters:
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ThreadParams - Currently ignored.
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Reture Values:
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NTSTATUS - Standard Nt Result Code
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--*/
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{
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ULONG Status = ERROR_SUCCESS;
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HMODULE hModule;
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TCHAR FileName[MAX_PATH+1];
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DWORD nLen = 0;
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#define RESOURCE_NAME TEXT("LsaMofResource")
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#define IMAGE_PATH TEXT("lsass.exe")
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LsapEnterFunc("LsapInitializeWmiTrace");
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hModule = GetModuleHandle(IMAGE_PATH);
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if (hModule != NULL) {
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nLen = GetModuleFileName(hModule, FileName, MAX_PATH);
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}
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if (nLen == 0) {
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lstrcpy(FileName, IMAGE_PATH);
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}
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//
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// Register Trace GUIDs
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//
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Status = RegisterTraceGuids(
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LsapTraceControlCallBack,
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NULL,
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&LsapTraceControlGuid,
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LsapTraceGuidCount,
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LsapTraceGuids,
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FileName,
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RESOURCE_NAME,
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&LsapTraceRegistrationHandle);
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#if DBG
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if (Status != ERROR_SUCCESS)
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{
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DebugLog(( DEB_ERROR, "LsapInitializeWmiTrace failed: 0x%x\n", Status));
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}
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#endif // DBG
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return Status;
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}
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ULONG
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LsapTraceControlCallBack(
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IN WMIDPREQUESTCODE RequestCode,
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IN PVOID RequestContext,
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IN OUT ULONG *InOutBufferSize,
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IN OUT PVOID Buffer
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)
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/*++
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Routine Description:
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Call back function called by the WMI module to enable or
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disable LSA tracing.
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Arguments:
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RequestCode - WMI_ENABLE_EVENTS or WMI_DISABLE_EVENTS
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RequestContext - currently ignored
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InOutBufferSize - size of data returned by this call back.
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Currently always set to 0.
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Buffer - pointer to data received. In case of WMI_ENABLE_EVENTS,
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this is a pointer to the trace handle.
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Return Value:
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Win32 error code.
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Notes:
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--*/
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{
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ULONG Status = ERROR_SUCCESS;
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LsapEnterFunc("LsapTraceControlCallBack");
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switch (RequestCode)
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{
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case WMI_ENABLE_EVENTS:
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{
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LsapTraceLoggerHandle = GetTraceLoggerHandle(Buffer);
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LsapEventTraceFlag = TRUE; // enable flag
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break;
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}
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case WMI_DISABLE_EVENTS:
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{
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LsapTraceLoggerHandle = (TRACEHANDLE) 0;
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LsapEventTraceFlag = FALSE; // disable flag
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break;
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}
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default:
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{
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Status = ERROR_INVALID_PARAMETER;
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break;
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}
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}
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*InOutBufferSize = 0;
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return Status;
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}
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NTSTATUS
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LsapStartWmiTraceInitThread(void)
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/*++
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Routine Description:
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Start the thread that registers WMI trace guids.
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Parameters:
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None
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Return Values:
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NTSTATUS - Standard Nt Result Code
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--*/
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{
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NTSTATUS Status=STATUS_SUCCESS;
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HANDLE ThreadHandle;
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ULONG ThreadId = 0;
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ULONG WinError;
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ThreadHandle = CreateThread(NULL,
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0,
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LsapInitializeWmiTrace,
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NULL,
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0,
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&ThreadId);
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if (NULL == ThreadHandle)
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{
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Status = STATUS_UNSUCCESSFUL;
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WinError = GetLastError();
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DebugLog((DEB_ERROR, "Failed to create thread for LsapInitializeWmiTrace: 0x%x", WinError));
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}
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else
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{
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CloseHandle(ThreadHandle);
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}
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return Status;
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}
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VOID
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LsapTraceEvent(
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IN ULONG WmiEventType,
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IN LSA_TRACE_EVENT_TYPE LsaTraceEventType
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)
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/*++
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Routine Description:
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This routine will do a WMI event trace.
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Parameters:
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WmiEventType - Event Type, valid values are:
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EVENT_TRACE_TYPE_START
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EVENT_TRACE_TYPE_END
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TraceGuid - Index in LsapTraceGuids[]
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Return Values:
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None.
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--*/
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{
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LsapTraceEventWithData(WmiEventType,
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LsaTraceEventType,
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0,
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NULL);
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}
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VOID
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LsapTraceEventWithData(
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IN ULONG WmiEventType,
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IN LSA_TRACE_EVENT_TYPE LsaTraceEventType,
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IN ULONG ItemCount,
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IN PUNICODE_STRING Items OPTIONAL
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)
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/*++
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Routine Description:
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This routine will do a WMI event trace.
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Parameters:
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WmiEventType - Event Type, valid values are:
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EVENT_TRACE_TYPE_START
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EVENT_TRACE_TYPE_END
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EVENT_TRACE_TYPE_INFO
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TraceGuid - Index in LsapTraceGuids[]
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ItemCount - the number of elements in Items
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Items - an array of information. The unicode strings don't have
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to represent strings -- can be binary data whose length
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is denoted by the Length field.
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Return Values:
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None.
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--*/
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{
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#if DBG
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ULONG WinError;
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#endif
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WCHAR NullChar = UNICODE_NULL;
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PVOID BuffersToFree[10];
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ULONG BuffersToFreeCount = 0;
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ULONG i;
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struct
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{
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EVENT_TRACE_HEADER EventTrace;
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MOF_FIELD EventInfo[2];
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} Event;
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//
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// Theoretically, only test LsapEventTraceFlag would be enough, since
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// LsapEventTraceFlag will remain FALSE in Registry Mode, because
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// LsapInitializeTrace() will never been called in Registry Mode.
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// Thus nobody will change the value of LsapEventTraceFlag
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//
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if (!LsapEventTraceFlag) {
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return;
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}
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//
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// Fill the event information.
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//
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ZeroMemory(&Event, sizeof(Event));
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Event.EventTrace.GuidPtr = (ULONGLONG) LsapTraceGuids[LsaTraceEventType].Guid;
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Event.EventTrace.Class.Type = (UCHAR) WmiEventType;
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Event.EventTrace.Flags |= (WNODE_FLAG_USE_GUID_PTR | // GUID is actually a pointer
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WNODE_FLAG_TRACED_GUID); // denotes a trace
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Event.EventTrace.Size = sizeof(Event.EventTrace); // no other parameters/information
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if ( (LsaTraceEventType == LsaTraceEvent_LookupIsolatedNameInTrustedDomains) ) {
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//
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// Add the flag that indicates that there is more data
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//
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Event.EventTrace.Flags |= WNODE_FLAG_USE_MOF_PTR;
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//
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// Make sure enough space has been allocated on the stack for us
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//
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ASSERT(sizeof(Event.EventInfo) >= (sizeof(MOF_FIELD) * 2));
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ASSERT( (ItemCount == 2) && (Items != NULL) );
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//
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// Fill in the data requested
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//
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for (i = 0; i < ItemCount; i++) {
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LPWSTR String = NULL;
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ULONG Length;
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//
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// Re'alloc to get a NULL terminated string
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//
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String = LsapMakeNullTerminatedString(&Items[i]);
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if (NULL == String) {
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String = &NullChar;
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Length = sizeof(NullChar);
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} else {
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Length = Items[i].Length + sizeof(WCHAR);
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}
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Event.EventInfo[i].Length = Length;
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Event.EventInfo[i].DataPtr = (ULONGLONG)String;
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Event.EventTrace.Size += sizeof(Event.EventInfo[i]);
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if (&NullChar != String) {
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ASSERT(BuffersToFreeCount < sizeof(BuffersToFree)/sizeof(BuffersToFree[0]));
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BuffersToFree[BuffersToFreeCount++] = String;
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}
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}
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}
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#if DBG
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WinError =
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#endif
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TraceEvent(LsapTraceLoggerHandle, (PEVENT_TRACE_HEADER) &Event);
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#if DBG
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if (WinError != ERROR_SUCCESS)
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{
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DebugLog(( DEB_ERROR, "WMI TraceEvent failed, status %x\n", WinError));
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}
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#endif
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for (i = 0; i < BuffersToFreeCount; i++) {
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LsapFreeLsaHeap(BuffersToFree[i]);
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}
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}
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LPWSTR
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LsapGetClientNetworkAddress(
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VOID
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)
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/*++
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Routine Description:
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This routine returns a NULL terminated string that represents the network
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address of the client. If the address cannot be obtained, NULL is returned.
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If the return value is non-NULL, the string must be freed with
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RpcStringFreeW.
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Parameters:
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None.
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Return Values:
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See description.
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--*/
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{
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ULONG RpcStatus;
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RPC_BINDING_HANDLE ServerBinding = NULL;
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PWSTR StringBinding = NULL;
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LPWSTR NetworkAddr = NULL;
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RpcStatus = RpcBindingServerFromClient(NULL, &ServerBinding);
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if (RPC_S_OK == RpcStatus) {
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RpcStatus = RpcBindingToStringBindingW(ServerBinding, &StringBinding);
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if (RPC_S_OK == RpcStatus) {
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RpcStatus = RpcStringBindingParseW(StringBinding,
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NULL,
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NULL,
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&NetworkAddr,
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NULL,
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NULL
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);
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RpcStringFreeW(&StringBinding);
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}
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RpcBindingFree(&ServerBinding);
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}
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return NetworkAddr;
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}
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LPWSTR
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LsapMakeNullTerminatedString(
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IN PUNICODE_STRING u
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)
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/*++
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Routine Description:
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This routine returns a NULL terminated string composed of the data in
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u. The string must be freed with LsapFreeLsaHeap().
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If u->Length is 0, a non-NULL string with the NULL character as the first
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character is returned.
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Parameters:
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u -- a unicode string
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Return Values:
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See description.
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--*/
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{
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LPWSTR String = NULL;
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ULONG Length;
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if (u) {
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Length = u->Length + sizeof(WCHAR);
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String = LsapAllocateLsaHeap(Length);
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if (String != NULL) {
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RtlCopyMemory(String, u->Buffer, u->Length);
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String[u->Length / sizeof(WCHAR)] = UNICODE_NULL;
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}
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}
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return String;
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}
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