494 lines
14 KiB
C++
494 lines
14 KiB
C++
|
/////////////////////////////////////////////////////////////////////////////
|
||
|
|
//
|
||
|
|
// Copyright: Microsoft Corp. 1997-1999. All rights reserved
|
||
|
|
//
|
||
|
|
/////////////////////////////////////////////////////////////////////////////
|
||
|
|
// Event.cpp : Implementation of CEvent
|
||
|
|
|
||
|
|
#include "stdafx.h"
|
||
|
|
#include "Evntutl.h"
|
||
|
|
#include "Event.h"
|
||
|
|
|
||
|
|
/////////////////////////////////////////////////////////////////////////////
|
||
|
|
// CEvent
|
||
|
|
|
||
|
|
STDMETHODIMP CEvent::InterfaceSupportsErrorInfo(REFIID riid)
|
||
|
|
{
|
||
|
|
static const IID* arr[] =
|
||
|
|
{
|
||
|
|
&IID_IEvent
|
||
|
|
};
|
||
|
|
for (int i=0; i < sizeof(arr) / sizeof(arr[0]); i++)
|
||
|
|
{
|
||
|
|
if (InlineIsEqualGUID(*arr[i],riid))
|
||
|
|
return S_OK;
|
||
|
|
}
|
||
|
|
return S_FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
Function: get_Server
|
||
|
|
Inputs: empty BSTR
|
||
|
|
Outputs: BSTR containing the Description for the Event (calculated)
|
||
|
|
Purpose: Allows user to access the description for an Event
|
||
|
|
*/
|
||
|
|
STDMETHODIMP CEvent::get_Description(BSTR *pVal)
|
||
|
|
{
|
||
|
|
HRESULT hr = S_OK;
|
||
|
|
unsigned int i;
|
||
|
|
|
||
|
|
if (pVal)
|
||
|
|
{
|
||
|
|
if (m_Description.length() == 0)
|
||
|
|
{
|
||
|
|
hr = CheckDefaultDescription(m_ppArgList);
|
||
|
|
if (SUCCEEDED(hr)) *pVal = m_Description.copy();
|
||
|
|
|
||
|
|
if (m_ppArgList)
|
||
|
|
{
|
||
|
|
// delete the ArgList
|
||
|
|
for (i=0;i<m_NumberOfStrings;i++)
|
||
|
|
delete [] m_ppArgList[i];
|
||
|
|
delete []m_ppArgList;
|
||
|
|
m_ppArgList = NULL;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else hr = E_POINTER;
|
||
|
|
|
||
|
|
return hr;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
Function: get_Source
|
||
|
|
Inputs: empty BSTR
|
||
|
|
Outputs: BSTR containing the name of the component which caused the Event
|
||
|
|
Purpose: Allows user to access the name of the component which caused the Event
|
||
|
|
*/
|
||
|
|
STDMETHODIMP CEvent::get_Source(BSTR *pVal)
|
||
|
|
{
|
||
|
|
HRESULT hr = S_OK;
|
||
|
|
|
||
|
|
if (pVal) *pVal = m_SourceName.copy();
|
||
|
|
else hr = E_POINTER;
|
||
|
|
|
||
|
|
return hr;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
Function: get_User
|
||
|
|
Inputs: empty BSTR
|
||
|
|
Outputs: BSTR containing the name and domain of the user who caused the Event
|
||
|
|
Purpose: Allows user to access the name and domain of the user who caused the Event
|
||
|
|
Notes: The first time this function is called, it will do a SID lookup
|
||
|
|
*/
|
||
|
|
STDMETHODIMP CEvent::get_User(BSTR *pVal)
|
||
|
|
{
|
||
|
|
HRESULT hr = S_OK;
|
||
|
|
|
||
|
|
if (pVal)
|
||
|
|
{
|
||
|
|
if (m_UserName.length() == 0)
|
||
|
|
{
|
||
|
|
SetUser();
|
||
|
|
}
|
||
|
|
*pVal = m_UserName.copy();
|
||
|
|
}
|
||
|
|
else hr = E_POINTER;
|
||
|
|
|
||
|
|
return hr;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
Function: get_ComputerName
|
||
|
|
Inputs: empty BSTR
|
||
|
|
Outputs: BSTR containing the name of the server on which the Event occured
|
||
|
|
Purpose: Allows user to access the name of the the server on which the Event occured
|
||
|
|
*/
|
||
|
|
STDMETHODIMP CEvent::get_ComputerName(BSTR *pVal)
|
||
|
|
{
|
||
|
|
HRESULT hr = S_OK;
|
||
|
|
|
||
|
|
if (pVal) *pVal = m_ComputerName.copy();
|
||
|
|
else hr = E_POINTER;
|
||
|
|
|
||
|
|
return hr;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
Function: get_EventID
|
||
|
|
Inputs: empty long
|
||
|
|
Outputs: long containing the ID of the Event
|
||
|
|
Purpose: Allows user to access the ID which can be used to lookup a message for the event
|
||
|
|
Notes: Since description is provided, this function is not very useful, however,
|
||
|
|
it is provided for completeness
|
||
|
|
*/
|
||
|
|
STDMETHODIMP CEvent::get_EventID(long *pVal)
|
||
|
|
{
|
||
|
|
HRESULT hr = S_OK;
|
||
|
|
// m_EventID = m_EventID & 0xFFFF; // The EventLog viewer uses this mask before displaying ID's
|
||
|
|
if (pVal) *pVal = m_EventID;
|
||
|
|
else hr = E_POINTER;
|
||
|
|
|
||
|
|
return hr;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
Function: get_Category
|
||
|
|
Inputs: empty long
|
||
|
|
Outputs: long containing the category ID for the event
|
||
|
|
Purpose: Allows user to access the category ID for the event
|
||
|
|
*/
|
||
|
|
STDMETHODIMP CEvent::get_Category(long *pVal)
|
||
|
|
{
|
||
|
|
HRESULT hr = S_OK;
|
||
|
|
|
||
|
|
if (pVal) *pVal = m_EventCategory;
|
||
|
|
else hr = E_POINTER;
|
||
|
|
|
||
|
|
return hr;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
Function: get_EventType
|
||
|
|
Inputs: empty enumeration
|
||
|
|
Outputs: enumeration containing the type of event that occured
|
||
|
|
Purpose: Allows user to access the type of event that occured
|
||
|
|
*/
|
||
|
|
STDMETHODIMP CEvent::get_EventType(eEventType *pVal)
|
||
|
|
{
|
||
|
|
HRESULT hr = S_OK;
|
||
|
|
|
||
|
|
if (pVal) *pVal = m_EventType;
|
||
|
|
else hr = E_POINTER;
|
||
|
|
|
||
|
|
return hr;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
Function: get_OccurenceTime
|
||
|
|
Inputs: empty DATE structure
|
||
|
|
Outputs: DATE structure containing the local system time when the event occured
|
||
|
|
Purpose: Allows user to access the time when the event occured
|
||
|
|
*/
|
||
|
|
STDMETHODIMP CEvent::get_OccurrenceTime(DATE *pVal)
|
||
|
|
{
|
||
|
|
HRESULT hr = S_OK;
|
||
|
|
|
||
|
|
if (pVal) *pVal = m_OccurrenceTime;
|
||
|
|
else hr = E_POINTER;
|
||
|
|
|
||
|
|
return hr;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
Function: get_Data
|
||
|
|
Inputs: empty variant
|
||
|
|
Outputs: variant containing an array of bytes
|
||
|
|
Purpose: Allows user to access the data set by the event. This may or may not be set,
|
||
|
|
and is frequently not useful
|
||
|
|
*/
|
||
|
|
STDMETHODIMP CEvent::get_Data(VARIANT *pVal)
|
||
|
|
{
|
||
|
|
HRESULT hr = S_OK;
|
||
|
|
|
||
|
|
if (pVal)
|
||
|
|
{
|
||
|
|
pVal->vt = VT_ARRAY | VT_UI1;
|
||
|
|
pVal->parray = m_pDataArray;
|
||
|
|
}
|
||
|
|
else hr = E_POINTER;
|
||
|
|
|
||
|
|
return hr;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
Function: Init
|
||
|
|
Inputs: pointer to an EVENTLOGRECORD structure
|
||
|
|
Outputs: does not modify input
|
||
|
|
Purpose: fill Event object properties which do not require loading external libs
|
||
|
|
*/
|
||
|
|
HRESULT CEvent::Init(EVENTLOGRECORD* pEventStructure, const LPCTSTR szEventLogName)
|
||
|
|
{
|
||
|
|
HRESULT hr = S_OK;
|
||
|
|
m_EventLogName = szEventLogName;
|
||
|
|
hr = ParseEventBlob(pEventStructure);
|
||
|
|
|
||
|
|
return hr;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
Function: ParseEventBlob
|
||
|
|
Inputs: pointer to an EVENTLOGRECORD structure
|
||
|
|
Outputs: does not modify input
|
||
|
|
Purpose: Parse an EVENTLOGRECORD and set the appropriate internal structures of Event
|
||
|
|
*/
|
||
|
|
HRESULT CEvent::ParseEventBlob(EVENTLOGRECORD* pEventStructure)
|
||
|
|
{
|
||
|
|
HRESULT hr = S_OK;
|
||
|
|
wchar_t* wTempString;
|
||
|
|
BYTE* pSourceName;
|
||
|
|
BYTE* pComputerName;
|
||
|
|
SAFEARRAYBOUND rgsabound[1];
|
||
|
|
ULONG StringsToRetrieve = 0, CharsRead = 0, i = 0;
|
||
|
|
long Index[1];
|
||
|
|
BYTE pTemp;
|
||
|
|
|
||
|
|
m_EventID = pEventStructure->EventID;
|
||
|
|
m_EventCategory = pEventStructure->EventCategory;
|
||
|
|
|
||
|
|
switch (pEventStructure->EventType)
|
||
|
|
{
|
||
|
|
case EVENTLOG_ERROR_TYPE:
|
||
|
|
m_EventType = ErrorEvent;
|
||
|
|
break;
|
||
|
|
case EVENTLOG_WARNING_TYPE:
|
||
|
|
m_EventType = WarningEvent;
|
||
|
|
break;
|
||
|
|
case EVENTLOG_INFORMATION_TYPE:
|
||
|
|
m_EventType = InformationEvent;
|
||
|
|
break;
|
||
|
|
case EVENTLOG_AUDIT_SUCCESS:
|
||
|
|
m_EventType = AuditSuccess;
|
||
|
|
break;
|
||
|
|
case EVENTLOG_AUDIT_FAILURE:
|
||
|
|
m_EventType = AuditFailure;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
hr = E_FAIL;
|
||
|
|
}
|
||
|
|
|
||
|
|
// parse strings from the memory blob
|
||
|
|
// Set source name
|
||
|
|
pSourceName = (BYTE*) &(pEventStructure->DataOffset) + sizeof(pEventStructure->DataOffset);
|
||
|
|
wTempString = (wchar_t*)pSourceName;
|
||
|
|
m_SourceName = wTempString;
|
||
|
|
// Set computer name
|
||
|
|
pComputerName = (BYTE*)pSourceName + ((wcslen(wTempString)+1) * sizeof(wchar_t));
|
||
|
|
wTempString = (wchar_t*)pComputerName;
|
||
|
|
m_ComputerName = wTempString;
|
||
|
|
|
||
|
|
// Set SID
|
||
|
|
if ((pEventStructure->StringOffset - pEventStructure->UserSidOffset) != 0)
|
||
|
|
{
|
||
|
|
m_pSid = new BYTE[pEventStructure->UserSidLength]; // scope = CEvent, deleted in ~CEvent() or SetSID() whichever comes first
|
||
|
|
if (m_pSid != NULL) {
|
||
|
|
for (i = 0; i<pEventStructure->UserSidLength; i++)
|
||
|
|
m_pSid[i] = (BYTE)(*((BYTE*)pEventStructure + pEventStructure->UserSidOffset + i * sizeof(BYTE)));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Set Occurence time
|
||
|
|
// this code is copied from MSDN
|
||
|
|
FILETIME FileTime, LocalFileTime;
|
||
|
|
SYSTEMTIME SysTime;
|
||
|
|
__int64 lgTemp;
|
||
|
|
__int64 SecsTo1970 = 116444736000000000;
|
||
|
|
|
||
|
|
lgTemp = Int32x32To64(pEventStructure->TimeGenerated,10000000) + SecsTo1970;
|
||
|
|
|
||
|
|
FileTime.dwLowDateTime = (DWORD) lgTemp;
|
||
|
|
FileTime.dwHighDateTime = (DWORD)(lgTemp >> 32);
|
||
|
|
|
||
|
|
FileTimeToLocalFileTime(&FileTime, &LocalFileTime);
|
||
|
|
FileTimeToSystemTime(&LocalFileTime, &SysTime);
|
||
|
|
if(!SystemTimeToVariantTime(&SysTime, &m_OccurrenceTime)) hr = GetLastError();
|
||
|
|
|
||
|
|
// Set Data (create and fill a SafeArray)
|
||
|
|
if (pEventStructure->DataLength>0)
|
||
|
|
{
|
||
|
|
rgsabound[0].lLbound = 0;
|
||
|
|
rgsabound[0].cElements = pEventStructure->DataLength;
|
||
|
|
m_pDataArray = SafeArrayCreate(VT_UI1, 1, rgsabound);
|
||
|
|
|
||
|
|
for (i=0;i<pEventStructure->DataLength;i++)
|
||
|
|
{
|
||
|
|
Index[0] = i;
|
||
|
|
pTemp = (BYTE) (pEventStructure->DataOffset + i * sizeof(BYTE));
|
||
|
|
hr = SafeArrayPutElement(m_pDataArray, Index, &pTemp);
|
||
|
|
if (FAILED(hr)) i = pEventStructure->DataLength;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Set the description
|
||
|
|
m_Description = "";
|
||
|
|
if (m_SourceName.length() != 0)
|
||
|
|
{
|
||
|
|
// prepare the ArgList
|
||
|
|
m_NumberOfStrings = pEventStructure->NumStrings;
|
||
|
|
m_ppArgList = new wchar_t*[m_NumberOfStrings]; // scope = CEvent, deleted when ~CEvent or get_Description is called whichever is first
|
||
|
|
for (i=0;i<m_NumberOfStrings;i++)
|
||
|
|
m_ppArgList[i] = new wchar_t[(pEventStructure->DataOffset - pEventStructure->StringOffset)]; // can't be larger than the length of all the strings we got
|
||
|
|
for (i=0;i<m_NumberOfStrings;i++)
|
||
|
|
{
|
||
|
|
wTempString = (wchar_t*) (((BYTE*)(pEventStructure)) + pEventStructure->StringOffset + CharsRead * sizeof(wchar_t));
|
||
|
|
wcscpy(m_ppArgList[i], wTempString);
|
||
|
|
CharsRead = CharsRead + wcslen(wTempString) + 1; // + 1 for the null
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else // if there is no module to load a default description, just put all the string args in the description
|
||
|
|
{
|
||
|
|
StringsToRetrieve = pEventStructure->NumStrings;
|
||
|
|
while (StringsToRetrieve > 0)
|
||
|
|
{
|
||
|
|
wTempString = (wchar_t*) (((BYTE*)(pEventStructure)) + pEventStructure->StringOffset + CharsRead * sizeof(wchar_t));
|
||
|
|
m_Description = m_Description + " " + wTempString;
|
||
|
|
CharsRead = CharsRead + wcslen(wTempString) + 1; // + 1 for the null
|
||
|
|
StringsToRetrieve--;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return hr;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
Function: CheckDefaultDescription
|
||
|
|
Inputs: pointer pointer to a wide character
|
||
|
|
Outputs: does not modify input
|
||
|
|
Purpose: format a message from an EventID, set of input strings, and a source module
|
||
|
|
*/
|
||
|
|
HRESULT CEvent::CheckDefaultDescription(wchar_t** Arguments)
|
||
|
|
{
|
||
|
|
HRESULT hr = S_OK;
|
||
|
|
BYTE* wMessagePath = NULL;
|
||
|
|
ULONG BufferSize = 40000;
|
||
|
|
ULONG* lPathLength = NULL;
|
||
|
|
wchar_t* wOrigionalPath = NULL;
|
||
|
|
wchar_t* wExpandedPath = NULL;
|
||
|
|
wchar_t* pBuffer = NULL;
|
||
|
|
_bstr_t btRegKey;
|
||
|
|
_bstr_t btTempString;
|
||
|
|
HMODULE hiLib;
|
||
|
|
HKEY hKey;
|
||
|
|
try{
|
||
|
|
lPathLength = new ULONG;
|
||
|
|
if (lPathLength)
|
||
|
|
{
|
||
|
|
*lPathLength = 256*2;
|
||
|
|
wMessagePath = new BYTE[*lPathLength];
|
||
|
|
if (wMessagePath)
|
||
|
|
{
|
||
|
|
// get registry value for Source module path
|
||
|
|
btRegKey = "SYSTEM\\CurrentControlSet\\Services\\Eventlog\\" + m_EventLogName;
|
||
|
|
btRegKey = btRegKey + "\\";
|
||
|
|
btRegKey = btRegKey + m_SourceName;
|
||
|
|
hr = RegOpenKey(HKEY_LOCAL_MACHINE, btRegKey, &hKey);
|
||
|
|
if (hKey)
|
||
|
|
{
|
||
|
|
hr = RegQueryValueEx(hKey, L"EventMessageFile", NULL, NULL, wMessagePath, lPathLength);
|
||
|
|
if (hr == 0)
|
||
|
|
{
|
||
|
|
wOrigionalPath = (wchar_t*) wMessagePath;
|
||
|
|
wExpandedPath = new wchar_t[(int)*lPathLength];
|
||
|
|
if (wExpandedPath)
|
||
|
|
{
|
||
|
|
ExpandEnvironmentStrings(wOrigionalPath, wExpandedPath, *lPathLength);
|
||
|
|
btTempString = wExpandedPath;
|
||
|
|
|
||
|
|
// open the Source module
|
||
|
|
hiLib = LoadLibraryEx(btTempString, NULL, LOAD_LIBRARY_AS_DATAFILE);
|
||
|
|
hr = GetLastError();
|
||
|
|
if (hiLib)
|
||
|
|
{
|
||
|
|
pBuffer = new wchar_t[BufferSize];
|
||
|
|
if (pBuffer)
|
||
|
|
{
|
||
|
|
SetLastError(0);
|
||
|
|
FormatMessage(FORMAT_MESSAGE_FROM_HMODULE | FORMAT_MESSAGE_FROM_SYSTEM |
|
||
|
|
FORMAT_MESSAGE_ARGUMENT_ARRAY,
|
||
|
|
hiLib, m_EventID, 0, pBuffer, BufferSize,
|
||
|
|
reinterpret_cast<va_list*>(Arguments));
|
||
|
|
hr = HRESULT_FROM_WIN32(GetLastError());
|
||
|
|
m_Description = m_Description + pBuffer;
|
||
|
|
|
||
|
|
delete []pBuffer;
|
||
|
|
pBuffer = NULL;
|
||
|
|
}
|
||
|
|
else hr = E_OUTOFMEMORY;
|
||
|
|
|
||
|
|
FreeLibrary(hiLib);
|
||
|
|
}
|
||
|
|
delete [] wExpandedPath;
|
||
|
|
wExpandedPath = NULL;
|
||
|
|
}
|
||
|
|
else hr = E_OUTOFMEMORY;
|
||
|
|
}
|
||
|
|
else hr = HRESULT_FROM_WIN32(hr);
|
||
|
|
|
||
|
|
RegCloseKey(hKey);
|
||
|
|
}
|
||
|
|
else hr = HRESULT_FROM_WIN32(hr);
|
||
|
|
|
||
|
|
delete []wMessagePath;
|
||
|
|
wMessagePath = NULL;
|
||
|
|
}
|
||
|
|
else hr = E_OUTOFMEMORY;
|
||
|
|
|
||
|
|
delete lPathLength;
|
||
|
|
lPathLength = NULL;
|
||
|
|
}
|
||
|
|
else hr = E_OUTOFMEMORY;
|
||
|
|
|
||
|
|
} catch(...){
|
||
|
|
if (lPathLength != NULL) {
|
||
|
|
delete lPathLength;
|
||
|
|
}
|
||
|
|
if (wMessagePath != NULL) {
|
||
|
|
delete []wMessagePath;
|
||
|
|
}
|
||
|
|
if (wExpandedPath != NULL) {
|
||
|
|
delete [] wExpandedPath;
|
||
|
|
}
|
||
|
|
if (pBuffer != NULL) {
|
||
|
|
delete []pBuffer;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return hr;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
Function: SetUser
|
||
|
|
Inputs: none
|
||
|
|
Outputs: HRESULT indicating what error if any occured
|
||
|
|
Purpose: finds alias and domain for a given SID
|
||
|
|
*/
|
||
|
|
HRESULT CEvent::SetUser()
|
||
|
|
{
|
||
|
|
HRESULT hr = S_OK;
|
||
|
|
SID_NAME_USE SidNameUse;
|
||
|
|
wchar_t* wUserName;
|
||
|
|
wchar_t* wDomainName;
|
||
|
|
SID* pSid;
|
||
|
|
unsigned long UserNameLength = 256;
|
||
|
|
|
||
|
|
// Set user name and sid
|
||
|
|
if (m_pSid !=NULL)
|
||
|
|
{
|
||
|
|
pSid = (SID*)m_pSid;
|
||
|
|
wUserName = new wchar_t[UserNameLength];
|
||
|
|
if (wUserName)
|
||
|
|
{
|
||
|
|
wDomainName = new wchar_t[UserNameLength];
|
||
|
|
if (wDomainName)
|
||
|
|
{
|
||
|
|
m_UserName = "";
|
||
|
|
if (LookupAccountSid(NULL, pSid, wUserName, &UserNameLength, wDomainName,
|
||
|
|
&UserNameLength, &SidNameUse))
|
||
|
|
m_UserName = m_UserName + wDomainName + L"\\" + wUserName;
|
||
|
|
else hr = HRESULT_FROM_WIN32(GetLastError());
|
||
|
|
delete []wDomainName;
|
||
|
|
}
|
||
|
|
else hr = E_OUTOFMEMORY;
|
||
|
|
delete []wUserName;
|
||
|
|
}
|
||
|
|
else hr = E_OUTOFMEMORY;
|
||
|
|
delete []m_pSid;
|
||
|
|
m_pSid = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
return hr;
|
||
|
|
}
|
||
|
|
|