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731 lines
22 KiB
731 lines
22 KiB
/*******************************************************************************
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* AUDIT.C
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*
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* This module contains the routines for logging audit events
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*
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* Copyright (C) 1997-1999 Microsoft Corp.
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*******************************************************************************/
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#include "precomp.h"
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#pragma hdrstop
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#include <rpc.h>
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#include <msaudite.h>
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#include <ntlsa.h>
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#include <authz.h>
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#include <authzi.h>
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#include <winsock2.h>
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HANDLE AuditLogHandle = NULL;
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HANDLE SystemLogHandle = NULL;
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#define MAX_INSTANCE_MEMORYERR 20
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/*
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* Global data
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*/
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//Authz Changes
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AUTHZ_RESOURCE_MANAGER_HANDLE hRM = NULL;
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extern RTL_CRITICAL_SECTION g_AuthzCritSection;
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//END Authz Changes
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/*
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* External procedures defined
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*/
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VOID
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AuditEvent( PWINSTATION pWinstation, ULONG EventId );
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NTSTATUS
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AuthzReportEventW( IN PAUTHZ_AUDIT_EVENT_TYPE_HANDLE pHAET,
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IN DWORD Flags,
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IN ULONG EventId,
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IN PSID pUserID,
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IN USHORT NumStrings,
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IN ULONG DataSize OPTIONAL, //Future - DO NOT USE
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IN PWSTR* Strings,
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IN PVOID Data OPTIONAL //Future - DO NOT USE
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);
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BOOL AuthzInit( IN DWORD Flags,
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IN USHORT CategoryID,
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IN USHORT AuditID,
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IN USHORT ParameterCount,
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OUT PAUTHZ_AUDIT_EVENT_TYPE_HANDLE phAuditEventType
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);
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BOOLEAN
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AuditingEnabled ();
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VOID
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AuditEnd();
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/*
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* Internal procedures defined
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*/
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NTSTATUS
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AdtBuildLuidString(
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IN PLUID Value,
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OUT PUNICODE_STRING ResultantString
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);
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BOOLEAN
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IsAuditLogFull(
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HANDLE LogHandle
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)
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{
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BOOLEAN retval = TRUE;
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EVENTLOG_FULL_INFORMATION EventLogFullInformation;
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DWORD dwBytesNeeded;
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if (GetEventLogInformation(LogHandle,
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EVENTLOG_FULL_INFO,
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&EventLogFullInformation,
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sizeof(EventLogFullInformation),
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&dwBytesNeeded ) ) {
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if (EventLogFullInformation.dwFull == FALSE) {
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retval = FALSE;
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}
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}
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return retval;
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}
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NTSTATUS
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AdtBuildLuidString(
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IN PLUID Value,
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OUT PUNICODE_STRING ResultantString
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)
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/*++
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Routine Description:
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This function builds a unicode string representing the passed LUID.
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The resultant string will be formatted as follows:
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(0x00005678,0x12340000)
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Arguments:
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Value - The value to be transformed to printable format (Unicode string).
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ResultantString - Points to the unicode string header. The body of this
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unicode string will be set to point to the resultant output value
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if successful. Otherwise, the Buffer field of this parameter
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will be set to NULL.
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FreeWhenDone - If TRUE, indicates that the body of the ResultantString
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must be freed to process heap when no longer needed.
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Return Values:
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STATUS_NO_MEMORY - indicates memory could not be allocated
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for the string body.
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All other Result Codes are generated by called routines.
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--*/
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{
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NTSTATUS Status;
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UNICODE_STRING IntegerString;
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ULONG Buffer[(16*sizeof(WCHAR))/sizeof(ULONG)];
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IntegerString.Buffer = (PWCHAR)&Buffer[0];
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IntegerString.MaximumLength = 16*sizeof(WCHAR);
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//
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// Length (in WCHARS) is 3 for (0x
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// 10 for 1st hex number
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// 3 for ,0x
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// 10 for 2nd hex number
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// 1 for )
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// 1 for null termination
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//
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ResultantString->Length = 0;
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ResultantString->MaximumLength = 28 * sizeof(WCHAR);
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ResultantString->Buffer = RtlAllocateHeap( RtlProcessHeap(), 0,
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ResultantString->MaximumLength);
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if (ResultantString->Buffer == NULL) {
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return(STATUS_NO_MEMORY);
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}
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Status = RtlAppendUnicodeToString( ResultantString, L"(0x" );
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Status = RtlIntegerToUnicodeString( Value->HighPart, 16, &IntegerString );
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Status = RtlAppendUnicodeToString( ResultantString, IntegerString.Buffer );
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Status = RtlAppendUnicodeToString( ResultantString, L",0x" );
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Status = RtlIntegerToUnicodeString( Value->LowPart, 16, &IntegerString );
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Status = RtlAppendUnicodeToString( ResultantString, IntegerString.Buffer );
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Status = RtlAppendUnicodeToString( ResultantString, L")" );
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return(STATUS_SUCCESS);
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}
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VOID
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AuditEvent( PWINSTATION pWinstation, ULONG EventId )
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{
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NTSTATUS Status;
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UNICODE_STRING LuidString;
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PWSTR StringPointerArray[6];
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USHORT StringIndex = 0;
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TOKEN_STATISTICS TokenInformation;
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ULONG ReturnLength;
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LUID LogonId = {0,0};
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AUTHZ_AUDIT_EVENT_TYPE_HANDLE hAET = NULL;
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if (!AuditingEnabled() )
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return;
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// Initialize LuidString.
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LuidString.Length = 0;
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LuidString.Buffer = NULL;
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//
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//AUTHZ Changes
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//
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if( !AuthzInit( 0, SE_CATEGID_LOGON, (USHORT)EventId, 6, &hAET ))
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goto badAuthzInit;
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if (pWinstation->UserName && (wcslen(pWinstation->UserName) > 0)) {
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StringPointerArray[StringIndex] = pWinstation->UserName;
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} else {
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StringPointerArray[StringIndex] = L"Unknown";
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}
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StringIndex++;
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if (pWinstation->Domain && (wcslen(pWinstation->Domain) > 0)) {
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StringPointerArray[StringIndex] = pWinstation->Domain;
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} else {
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StringPointerArray [StringIndex] = L"Unknown";
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}
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StringIndex++;
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if (pWinstation->UserToken != NULL) {
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Status = NtQueryInformationToken (
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pWinstation->UserToken,
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TokenStatistics,
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&TokenInformation,
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sizeof(TokenInformation),
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&ReturnLength
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);
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if (NT_SUCCESS(Status)) {
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Status = AdtBuildLuidString( &(TokenInformation.AuthenticationId), &LuidString );
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} else {
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Status = AdtBuildLuidString( &LogonId, &LuidString );
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}
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} else {
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Status = AdtBuildLuidString( &LogonId, &LuidString );
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}
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StringPointerArray[StringIndex] = LuidString.Buffer;
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StringIndex++;
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if (pWinstation->WinStationName && (wcslen(pWinstation->WinStationName) > 0)) {
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StringPointerArray[StringIndex] = pWinstation->WinStationName;
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} else {
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StringPointerArray[StringIndex] = L"Unknown" ;
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}
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StringIndex++;
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if (pWinstation->Client.ClientName && (wcslen(pWinstation->Client.ClientName) > 0)) {
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StringPointerArray[StringIndex] = pWinstation->Client.ClientName;
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} else {
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StringPointerArray[StringIndex] = L"Unknown";
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}
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StringIndex++;
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StringPointerArray[StringIndex] = L"Unknown";
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if( pWinstation->pLastClientAddress != NULL )
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{
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PSTR szIPV4 = NULL;
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TCHAR tchWideIP[ 80 ];
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int cchWideIP = sizeof( tchWideIP ) / sizeof( TCHAR );
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if( pWinstation->pLastClientAddress->length < 16 )
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{
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/* currently only ipv4 apis are in use */
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struct in_addr Ipv4;
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RtlCopyMemory( &Ipv4 , &pWinstation->pLastClientAddress->addr[0] , pWinstation->pLastClientAddress->length );
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szIPV4 = inet_ntoa( Ipv4 );
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// convert ansi to wide
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if( MultiByteToWideChar(
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CP_ACP, // code page
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0, // character-type options
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szIPV4, // string to map
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-1, // number of bytes in string
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tchWideIP, // wide-character buffer
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cchWideIP // size of buffer
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) != 0 )
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{
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StringPointerArray[StringIndex] = tchWideIP;
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}
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}
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}
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StringIndex++;
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//Authz Changes
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Status = AuthzReportEventW( &hAET,
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APF_AuditSuccess,
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EventId,
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pWinstation->pUserSid,
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StringIndex,
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0,
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StringPointerArray,
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NULL
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);
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//end authz changes
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if ( !NT_SUCCESS(Status))
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DBGPRINT(("Termsrv - failed to report event \n" ));
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badAuthzInit:
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if( hAET != NULL )
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AuthziFreeAuditEventType( hAET );
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if (LuidString.Buffer != NULL) {
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RtlFreeHeap(RtlProcessHeap(), 0, LuidString.Buffer);
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}
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}
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/***************************************************************************\
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* AuditingEnabled
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*
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* Purpose : Check auditing via LSA.
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*
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* Returns: TRUE on success, FALSE on failure
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*
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* History:
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* 5-6-92 DaveHart Created.
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\***************************************************************************/
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BOOLEAN
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AuditingEnabled()
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{
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NTSTATUS Status, IgnoreStatus;
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PPOLICY_AUDIT_EVENTS_INFO AuditInfo;
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OBJECT_ATTRIBUTES ObjectAttributes;
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SECURITY_QUALITY_OF_SERVICE SecurityQualityOfService;
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LSA_HANDLE PolicyHandle;
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BOOLEAN ReturnValue;
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|
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//
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// Set up the Security Quality Of Service for connecting to the
|
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// LSA policy object.
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//
|
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SecurityQualityOfService.Length = sizeof(SECURITY_QUALITY_OF_SERVICE);
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SecurityQualityOfService.ImpersonationLevel = SecurityImpersonation;
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SecurityQualityOfService.ContextTrackingMode = SECURITY_DYNAMIC_TRACKING;
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SecurityQualityOfService.EffectiveOnly = FALSE;
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|
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//
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// Set up the object attributes to open the Lsa policy object
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//
|
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|
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InitializeObjectAttributes(
|
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&ObjectAttributes,
|
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NULL,
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0L,
|
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NULL,
|
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NULL
|
|
);
|
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ObjectAttributes.SecurityQualityOfService = &SecurityQualityOfService;
|
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|
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//
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// Open the local LSA policy object
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//
|
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|
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Status = LsaOpenPolicy(
|
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NULL,
|
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&ObjectAttributes,
|
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POLICY_VIEW_AUDIT_INFORMATION | POLICY_SET_AUDIT_REQUIREMENTS,
|
|
&PolicyHandle
|
|
);
|
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if (!NT_SUCCESS(Status)) {
|
|
DBGPRINT(("Termsrv: Failed to open LsaPolicyObject Status = 0x%lx", Status));
|
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return FALSE;
|
|
}
|
|
|
|
Status = LsaQueryInformationPolicy(
|
|
PolicyHandle,
|
|
PolicyAuditEventsInformation,
|
|
(PVOID *)&AuditInfo
|
|
);
|
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IgnoreStatus = LsaClose(PolicyHandle);
|
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ASSERT(NT_SUCCESS(IgnoreStatus));
|
|
|
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if (!NT_SUCCESS(Status)) {
|
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DBGPRINT(("Termsrv: Failed to query audit event info Status = 0x%lx", Status));
|
|
return FALSE;
|
|
}
|
|
|
|
ReturnValue = (AuditInfo->AuditingMode &&
|
|
((AuditInfo->EventAuditingOptions)[AuditCategoryLogon] &
|
|
POLICY_AUDIT_EVENT_SUCCESS));
|
|
|
|
LsaFreeMemory(AuditInfo);
|
|
|
|
return ReturnValue;
|
|
}
|
|
|
|
|
|
VOID WriteErrorLogEntry(
|
|
IN NTSTATUS NtStatusCode,
|
|
IN PVOID pRawData,
|
|
IN ULONG RawDataLength
|
|
)
|
|
{
|
|
NTSTATUS Status;
|
|
ULONG Length;
|
|
|
|
|
|
if ( !SystemLogHandle ) {
|
|
UNICODE_STRING ModuleName;
|
|
|
|
RtlInitUnicodeString( &ModuleName, L"TermService");
|
|
|
|
Status = ElfRegisterEventSourceW( NULL, &ModuleName, &SystemLogHandle );
|
|
|
|
if (!NT_SUCCESS(Status)) {
|
|
DBGPRINT(("Termsrv - failed to open System log file\n"));
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (IsAuditLogFull(SystemLogHandle))
|
|
return;
|
|
|
|
Status = ElfReportEventW( SystemLogHandle,
|
|
EVENTLOG_ERROR_TYPE,
|
|
0,
|
|
NtStatusCode,
|
|
NULL,
|
|
0,
|
|
RawDataLength,
|
|
NULL,
|
|
pRawData,
|
|
0,
|
|
NULL,
|
|
NULL );
|
|
if ( !NT_SUCCESS(Status))
|
|
DBGPRINT(("Termsrv - failed to report event \n" ));
|
|
}
|
|
|
|
|
|
// This function is duplicated in \nt\termsrv\sessdir\dis\tssdis.cpp.
|
|
/****************************************************************************/
|
|
// PostErrorValueEvent
|
|
//
|
|
// Utility function used to create a system log error event containing one
|
|
// hex DWORD error code value.
|
|
/****************************************************************************/
|
|
void PostErrorValueEvent(unsigned EventCode, DWORD ErrVal)
|
|
{
|
|
HANDLE hLog;
|
|
WCHAR hrString[128];
|
|
PWSTR String = NULL;
|
|
extern WCHAR gpszServiceName[];
|
|
static DWORD numInstances = 0;
|
|
//
|
|
//count the numinstances of out of memory error, if this is more than
|
|
//a specified number, we just won't log them
|
|
//
|
|
if( STATUS_COMMITMENT_LIMIT == ErrVal )
|
|
{
|
|
if( numInstances > MAX_INSTANCE_MEMORYERR )
|
|
return;
|
|
//
|
|
//if applicable, tell the user that we won't log any more of the out of memory errors
|
|
//
|
|
if( numInstances >= MAX_INSTANCE_MEMORYERR - 1 ) {
|
|
wsprintfW(hrString, L"0x%X. This type of error will not be logged again to avoid clutter.", ErrVal);
|
|
String = hrString;
|
|
}
|
|
numInstances++;
|
|
}
|
|
|
|
hLog = RegisterEventSource(NULL, gpszServiceName);
|
|
if (hLog != NULL) {
|
|
if( NULL == String ) {
|
|
wsprintfW(hrString, L"0x%X", ErrVal);
|
|
String = hrString;
|
|
}
|
|
ReportEvent(hLog, EVENTLOG_ERROR_TYPE, 0, EventCode, NULL, 1, 0,
|
|
(const WCHAR **)&String, NULL);
|
|
DeregisterEventSource(hLog);
|
|
}
|
|
}
|
|
|
|
/*************************************************************
|
|
* AuthzInit Purpose : Initialize authz for logging an event to the security log
|
|
*Flags - unused
|
|
*Category Id - Security Category to which this event belongs
|
|
*Audit Id - An id for the event
|
|
*PArameter count - Number of parameters that will be passed to the logging function later
|
|
****************************************************************/
|
|
|
|
BOOL AuthzInit( IN DWORD Flags,
|
|
IN USHORT CategoryID,
|
|
IN USHORT AuditID,
|
|
IN USHORT ParameterCount,
|
|
OUT PAUTHZ_AUDIT_EVENT_TYPE_HANDLE phAuditEventType
|
|
)
|
|
{
|
|
BOOL fAuthzInit = TRUE;
|
|
BOOLEAN WasEnabled = FALSE;
|
|
NTSTATUS Status;
|
|
|
|
if( NULL == phAuditEventType )
|
|
goto badAuthzInit;
|
|
|
|
Status = RtlAdjustPrivilege(
|
|
SE_SECURITY_PRIVILEGE | SE_AUDIT_PRIVILEGE,
|
|
TRUE, // Enable the PRIVILEGE
|
|
FALSE, // Don't Use Thread token (under impersonation)
|
|
&WasEnabled
|
|
);
|
|
|
|
if ( Status == STATUS_NO_TOKEN ) {
|
|
DBGPRINT(("TERMSRV: AuditEvent: RtlAdjustPrivilege failure 0x%x\n",Status));
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
*phAuditEventType = NULL;
|
|
|
|
//
|
|
//only one thread can create hRM
|
|
//
|
|
RtlEnterCriticalSection( &g_AuthzCritSection );
|
|
if( NULL == hRM )
|
|
{
|
|
fAuthzInit = AuthzInitializeResourceManager( 0,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
L"Terminal Server",
|
|
&hRM
|
|
);
|
|
|
|
}
|
|
RtlLeaveCriticalSection( &g_AuthzCritSection );
|
|
|
|
if ( !fAuthzInit )
|
|
{
|
|
DBGPRINT(("TERMSRV: AuditEvent: AuthzInitializeResourceManager failed with %d\n", GetLastError()));
|
|
goto badAuthzInit;
|
|
}
|
|
|
|
|
|
fAuthzInit = AuthziInitializeAuditEventType( Flags,
|
|
CategoryID,
|
|
AuditID,
|
|
ParameterCount,
|
|
phAuditEventType
|
|
);
|
|
|
|
if ( !fAuthzInit )
|
|
{
|
|
DBGPRINT(("TERMSRV: AuditEvent: AuthziInitializeAuditEventType failed with %d\n", GetLastError()));
|
|
goto badAuthzInit;
|
|
}
|
|
|
|
badAuthzInit:
|
|
if( !fAuthzInit )
|
|
{
|
|
if( NULL != *phAuditEventType )
|
|
{
|
|
if( !AuthziFreeAuditEventType( *phAuditEventType ))
|
|
DBGPRINT(("TERMSRV: AuditEvent: AuthziFreeAuditEventType failed with %d\n", GetLastError()));
|
|
*phAuditEventType = NULL;
|
|
}
|
|
}
|
|
|
|
if( !WasEnabled ) {
|
|
|
|
/*
|
|
* Principle of least rights says to not go around with privileges
|
|
* held you do not need. So we must disable the privilege.
|
|
*/
|
|
RtlAdjustPrivilege(
|
|
SE_SECURITY_PRIVILEGE | SE_AUDIT_PRIVILEGE,
|
|
FALSE, // Disable the PRIVILEGE
|
|
FALSE, // Don't Use Thread token
|
|
&WasEnabled
|
|
);
|
|
|
|
}
|
|
|
|
// if( fAuthzInit )
|
|
// DBGPRINT(("TERMSRV: Successfully initialized authz = %d\n", AuditID));
|
|
return fAuthzInit;
|
|
}
|
|
|
|
|
|
/*********************************************************
|
|
* Purpose : Log an Event to the security log
|
|
* In pHAET
|
|
* Audit Event type obtained from a call to AuthzInit() above
|
|
* In Flags
|
|
* APF_AuditSuccess or others as listed in the header file
|
|
* pUserSID - Unused
|
|
* NumStrings - Number of strings contained within "Strings"
|
|
* DataSize - unused
|
|
* Strings- Pointer to a sequence of unicode strings
|
|
* Data - unused
|
|
*
|
|
**********************************************************/
|
|
NTSTATUS
|
|
AuthzReportEventW( IN PAUTHZ_AUDIT_EVENT_TYPE_HANDLE pHAET,
|
|
IN DWORD Flags,
|
|
IN ULONG EventId,
|
|
IN PSID pUserSID,
|
|
IN USHORT NumStrings,
|
|
IN ULONG DataSize OPTIONAL, //Future - DO NOT USE
|
|
IN PWSTR* Strings,
|
|
IN PVOID Data OPTIONAL //Future - DO NOT USE
|
|
)
|
|
{
|
|
NTSTATUS status = STATUS_ACCESS_DENIED;
|
|
AUTHZ_AUDIT_EVENT_HANDLE hAE = NULL;
|
|
BOOL fSuccess = FALSE;
|
|
PAUDIT_PARAMS pParams = NULL;
|
|
|
|
if( NULL == hRM || NULL == pHAET || *pHAET == NULL )
|
|
return status;
|
|
|
|
fSuccess = AuthziAllocateAuditParams( &pParams, NumStrings );
|
|
|
|
if ( !fSuccess )
|
|
{
|
|
DBGPRINT(("TERMSRV: AuditEvent: AuthzAllocateAuditParams failed with %d\n", GetLastError()));
|
|
goto BadAuditEvent;
|
|
}
|
|
|
|
|
|
if( 6 == NumStrings )
|
|
{
|
|
fSuccess = AuthziInitializeAuditParamsWithRM( Flags,
|
|
hRM,
|
|
NumStrings,
|
|
pParams,
|
|
APT_String, Strings[0],
|
|
APT_String, Strings[1],
|
|
APT_String, Strings[2],
|
|
APT_String, Strings[3],
|
|
APT_String, Strings[4],
|
|
APT_String, Strings[5]
|
|
);
|
|
}
|
|
else if( 0 == NumStrings )
|
|
{
|
|
fSuccess = AuthziInitializeAuditParamsWithRM( Flags,
|
|
hRM,
|
|
NumStrings,
|
|
pParams
|
|
);
|
|
}
|
|
else
|
|
{
|
|
//we don't support anything else
|
|
fSuccess = FALSE;
|
|
DBGPRINT(("TERMSRV: AuditEvent: unsupported audit type \n"));
|
|
goto BadAuditEvent;
|
|
}
|
|
|
|
if ( !fSuccess )
|
|
{
|
|
DBGPRINT(("TERMSRV: AuditEvent: AuthziInitializeAuditParamsWithRM failed with %d\n", GetLastError()));
|
|
goto BadAuditEvent;
|
|
}
|
|
|
|
fSuccess = AuthziInitializeAuditEvent( 0,
|
|
hRM,
|
|
*pHAET,
|
|
pParams,
|
|
NULL,
|
|
INFINITE,
|
|
L"",
|
|
L"",
|
|
L"",
|
|
L"",
|
|
&hAE
|
|
);
|
|
|
|
if ( !fSuccess )
|
|
{
|
|
DBGPRINT(("TERMSRV: AuditEvent: AuthziInitializeAuditEvent failed with %d\n", GetLastError()));
|
|
goto BadAuditEvent;
|
|
}
|
|
|
|
fSuccess = AuthziLogAuditEvent( 0,
|
|
hAE,
|
|
NULL
|
|
);
|
|
|
|
if ( !fSuccess )
|
|
{
|
|
DBGPRINT(("TERMSRV: AuditEvent: AuthziLogAuditEvent failed with %d\n", GetLastError()));
|
|
goto BadAuditEvent;
|
|
}
|
|
|
|
BadAuditEvent:
|
|
|
|
if( hAE )
|
|
AuthzFreeAuditEvent( hAE );
|
|
|
|
if( pParams )
|
|
AuthziFreeAuditParams( pParams );
|
|
|
|
if( fSuccess )
|
|
status = STATUS_SUCCESS;
|
|
|
|
//if( fSuccess )
|
|
// DBGPRINT(("TERMSRV: Successfully audited event with authz= %d\n", EventId));
|
|
return status;
|
|
}
|
|
|
|
|
|
//
|
|
//should only be called once per our process
|
|
//
|
|
VOID AuditEnd()
|
|
{
|
|
if( NULL != hRM )
|
|
{
|
|
if( !AuthzFreeResourceManager( hRM ))
|
|
DBGPRINT(("TERMSRV: AuditEvent: AuthzFreeResourceManager failed with %d\n", GetLastError()));
|
|
hRM = NULL;
|
|
}
|
|
}
|