Leaked source code of windows server 2003
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9.5 KiB

//*************************************************************
//
// Events.cpp - Routines to handle the event log
//
// Microsoft Confidential
// Copyright (c) Microsoft Corporation 1995
// All rights reserved
//
//*************************************************************
#include "stdafx.h"
#include "rsopdbg.h"
#include "events.h"
HANDLE hEventLog = NULL;
TCHAR EventSourceName[] = TEXT("GPDAS");
TCHAR MessageResourceFile[] = TEXT("%systemroot%\\system32\\rsopprov.exe");
//*************************************************************
//
// InitializeEvents()
//
// Purpose: Opens the event log
//
// Parameters: void
//
// Return: TRUE if successful
// FALSE if an error occurs
//
// Comments:
//
// History: Date Author Comment
// 7/17/95 ericflo Created
//
//*************************************************************
BOOL InitializeEvents (void)
{
//
// Open the event source
//
hEventLog = RegisterEventSource(NULL, EventSourceName);
if (hEventLog) {
return TRUE;
}
dbg.Msg( DEBUG_MESSAGE_WARNING, TEXT("InitializeEvents: Could not open event log. Error = %d"), GetLastError());
return FALSE;
}
//*************************************************************
//
// Implementation of CEvents
//
//*************************************************************
//*************************************************************
// CEvents::CEvents
// Purpose: Constructor
//
// Parameters:
// bError - Error or informational
// dwId - Id of the eventlog msg
//
//
// allocates a default sized array for the messages
//*************************************************************
#define DEF_ARG_SIZE 10
CEvents::CEvents(BOOL bError, DWORD dwId ) :
m_cStrings(0), m_cAllocated(0), m_bInitialised(FALSE),
m_bError(bError), m_dwId(dwId), m_bFailed(TRUE)
{
//
// Allocate a default size for the message
//
m_xlpStrings = (LPTSTR *)LocalAlloc(LPTR, sizeof(LPTSTR)*DEF_ARG_SIZE);
m_cAllocated = DEF_ARG_SIZE;
if (!m_xlpStrings) {
dbg.Msg( DEBUG_MESSAGE_WARNING, TEXT("CEvent::CEvent Cannot log event, failed to allocate memory, error %d"), GetLastError());
return;
}
//
// Initialise eventlog if it is not already initialised
//
if (!hEventLog) {
if (!InitializeEvents()) {
dbg.Msg( DEBUG_MESSAGE_WARNING, TEXT("CEvent::CEvent Cannot log event, no handle"));
return;
}
}
m_bInitialised = TRUE;
m_bFailed = FALSE;
}
//*************************************************************
// CEvents::~CEvents()
//
// Purpose: Destructor
//
// Parameters: void
//
// frees the memory
//*************************************************************
CEvents::~CEvents()
{
for (int i = 0; i < m_cStrings; i++)
if (m_xlpStrings[i])
LocalFree(m_xlpStrings[i]);
}
//*************************************************************
//
// CEvents::ReallocArgStrings
//
// Purpose: Reallocates the buffer for storing arguments in case
// the buffer runs out
//
// Parameters: void
//
// reallocates
//*************************************************************
BOOL CEvents::ReallocArgStrings()
{
XPtrLF<LPTSTR> aStringsNew;
//
// first allocate a larger buffer
//
aStringsNew = (LPTSTR *)LocalAlloc(LPTR, sizeof(LPTSTR)*(m_cAllocated+DEF_ARG_SIZE));
if (!aStringsNew) {
dbg.Msg( DEBUG_MESSAGE_WARNING, TEXT("CEvent::CEvent Couldn't allocate memory"));
m_bFailed = TRUE;
return FALSE;
}
//
// copy the arguments
//
for (int i = 0; i < (m_cAllocated); i++) {
aStringsNew[i] = m_xlpStrings[i];
}
m_xlpStrings = aStringsNew.Acquire();
m_cAllocated+= DEF_ARG_SIZE;
return TRUE;
}
//*************************************************************
//
// CEvents::AddArg
//
// Purpose: Add arguments appropriately formatted
//
// Parameters:
//
//*************************************************************
BOOL CEvents::AddArg(LPTSTR szArg)
{
if ((!m_bInitialised) || (m_bFailed)) {
dbg.Msg( DEBUG_MESSAGE_WARNING, TEXT("CEvent::AddArg: Cannot log event, not initialised or failed before"));
return FALSE;
}
if (m_cStrings == m_cAllocated) {
if (!ReallocArgStrings())
return FALSE;
}
DWORD dwLength = lstrlen(szArg) + 1;
m_xlpStrings[m_cStrings] = (LPTSTR)LocalAlloc(LPTR, sizeof(TCHAR) * (dwLength));
if (!m_xlpStrings[m_cStrings]) {
dbg.Msg( DEBUG_MESSAGE_WARNING, TEXT("CEvent::AddArg Cannot allocate memory, error = %d"), GetLastError());
m_bFailed = TRUE;
return FALSE;
}
HRESULT hr = StringCchCopy(m_xlpStrings[m_cStrings], dwLength, szArg);
if(FAILED(hr)){
dbg.Msg( DEBUG_MESSAGE_WARNING, TEXT("CEvent::StringCchCopy failed with error = %d"), hr);
m_bFailed = TRUE;
return FALSE;
}
m_cStrings++;
return TRUE;
}
//*************************************************************
//
// CEvents::AddArg
//
// Purpose: Add arguments appropriately formatted
//
// Parameters:
//
//*************************************************************
BOOL CEvents::AddArg(DWORD dwArg)
{
if ((!m_bInitialised) || (m_bFailed)) {
dbg.Msg( DEBUG_MESSAGE_WARNING, TEXT("CEvent::AddArg(dw): Cannot log event, not initialised or failed before"));
return FALSE;
}
if (m_cStrings == m_cAllocated) {
if (!ReallocArgStrings())
return FALSE;
}
// 2^32 < 10^10
DWORD dwLength = 20;
m_xlpStrings[m_cStrings] = (LPTSTR)LocalAlloc(LPTR, sizeof(TCHAR) * dwLength);
if (!m_xlpStrings[m_cStrings]) {
dbg.Msg( DEBUG_MESSAGE_WARNING, TEXT("CEvent::AddArg(dw) Cannot allocate memory, error = %d"), GetLastError());
m_bFailed = TRUE;
return FALSE;
}
HRESULT hr = StringCchPrintf(m_xlpStrings[m_cStrings], dwLength, TEXT("%d"), dwArg);
if(FAILED(hr)){
dbg.Msg( DEBUG_MESSAGE_WARNING, TEXT("CEvent::StringCchPrintf failed with error = %d"), hr);
m_bFailed = TRUE;
return FALSE;
}
m_cStrings++;
return TRUE;
}
//*************************************************************
//
// CEvents::AddArg
//
// Purpose: Add arguments appropriately formatted
//
// Parameters:
//
//*************************************************************
BOOL CEvents::AddArgHex(DWORD dwArg)
{
if ((!m_bInitialised) || (m_bFailed)) {
dbg.Msg( DEBUG_MESSAGE_WARNING, TEXT("CEvent::AddArgHex: Cannot log event, not initialised or failed before"));
return FALSE;
}
if (m_cStrings == m_cAllocated) {
if (!ReallocArgStrings())
return FALSE;
}
DWORD dwLength = 20;
m_xlpStrings[m_cStrings] = (LPTSTR)LocalAlloc(LPTR, sizeof(TCHAR) * dwLength);
if (!m_xlpStrings[m_cStrings]) {
dbg.Msg( DEBUG_MESSAGE_WARNING, TEXT("CEvent::AddArgHex Cannot allocate memory, error = %d"), GetLastError());
m_bFailed = TRUE;
return FALSE;
}
HRESULT hr = StringCchPrintf(m_xlpStrings[m_cStrings], dwLength, TEXT("%#x"), dwArg);
if(FAILED(hr)){
dbg.Msg( DEBUG_MESSAGE_WARNING, TEXT("CEvent::StringCchPrintf failed with error = %d"), hr);
m_bFailed = TRUE;
return FALSE;
}
m_cStrings++;
return TRUE;
}
//*************************************************************
//
// CEvents::Report
//
// Purpose: Actually collectes all the arguments and reports it to
// the eventlog
//
// Parameters: void
//
//*************************************************************
BOOL CEvents::Report()
{
PSID pSid = NULL; // no sid being reportewd currently
WORD wType=0;
BOOL bResult = TRUE;
if ((!m_bInitialised) || (m_bFailed)) {
dbg.Msg( DEBUG_MESSAGE_WARNING, TEXT("CEvents::Report: Cannot log event, not initialised or failed before"));
return FALSE;
}
if ( m_bError ) {
wType = EVENTLOG_ERROR_TYPE;
} else {
wType = EVENTLOG_INFORMATION_TYPE;
}
if (!ReportEvent(hEventLog, wType, 0, m_dwId, pSid, m_cStrings, 0, (LPCTSTR *)((LPTSTR *)m_xlpStrings), NULL)) {
dbg.Msg( DEBUG_MESSAGE_WARNING, TEXT("CEvents::Report: ReportEvent failed. Error = %d"), GetLastError());
bResult = FALSE;
}
return bResult;
}
//*************************************************************
//
// ShutdownEvents()
//
// Purpose: Stops the event log
//
// Parameters: void
//
// Return: TRUE if successful
// FALSE if an error occurs
//
// Comments:
//
// History: Date Author Comment
// 7/17/95 ericflo Created
//
//*************************************************************
BOOL ShutdownEvents (void)
{
BOOL bRetVal = TRUE;
if (hEventLog) {
bRetVal = DeregisterEventSource(hEventLog);
hEventLog = NULL;
}
return bRetVal;
}