#include <iostream>
#include <string>
#include <cstring>
#include <windows.h>
#include <evntrace.h>
#include <psapi.h>
#include <direct.h>
#include <evntcons.h>
using namespace std;

char SESSION_NAME_FILE[] = "Sample_Process";

const UCHAR _Flag[] = { 173, 74, 129, 158, 4, 50, 210, 17, 154, 130, 0, 96, 8, 168, 105, 57 };

EVENT_TRACE_PROPERTIES m_TraceConfig;

UCHAR m_pTraceConfig[2048];

char m_File[256];

BOOL m_DoWhile;

TRACEHANDLE m_hTraceHandle;

ULONG64 m_hTraceHandle_econt[1];

TRACEHANDLE m_hSessionHandle;

string Unicode_To_Ansi(wstring strValue)
{
    static CHAR sBuff[1024] = { 0 };
    int iRet = WideCharToMultiByte(CP_ACP, 0, strValue.c_str(), -1, sBuff, sizeof(sBuff), NULL, NULL);
    if (iRet > 0) {
        return string(sBuff);
    }
    return "";
}

VOID WINAPI MyProcessRecordEvents(PEVENT_RECORD EventRecord)
{
    switch (EventRecord->EventHeader.EventDescriptor.Id)
    {
    case 1://創建進程
        cout << "創建進程！進行創建進行的進程ID：" <<
            EventRecord->EventHeader.ProcessId <<
            "，線程ID：" <<
            EventRecord->EventHeader.ThreadId <<
            "，進程SessionID：" <<
            *(ULONG*)(((PUCHAR)EventRecord->UserData)+32)<<
            "，創建的進程ID："<<
            *(ULONG*)(((PUCHAR)EventRecord->UserData) + 0) <<
            "，創建的進程路徑："<<
            Unicode_To_Ansi(  wstring((wchar_t*)(((PUCHAR)EventRecord->UserData) + 60)))
            <<endl;
        break;
    case 2://進程退出
        cout << "進程退出！進程ID：" <<
            EventRecord->EventHeader.ProcessId <<
            "，線程ID：" <<
            EventRecord->EventHeader.ThreadId <<
            ", 進程名："<<
            ((LPSTR)EventRecord->UserData) + 84
            <<endl;
        break;
        cout << "進程ID：" << EventRecord->EventHeader.ProcessId << "，未知的行為：0x"<<hex<<EventRecord->EventHeader.EventDescriptor.Id << endl;
    default:

        break;
    }
}

void CloseEtw()
{
    ULONG l_result = StopTraceA(m_hSessionHandle, SESSION_NAME_FILE, (PEVENT_TRACE_PROPERTIES)(m_pTraceConfig + 8));
    if (m_hTraceHandle != NULL)
    {
        CloseTrace(m_hTraceHandle);
    }
}

DWORD WINAPI OpenEtw(LPVOID lpThreadParameter)
{
    m_DoWhile = TRUE;

    _getcwd(m_File, sizeof(m_File));

    strcat(m_File, "\\MyFile.etl");
    m_TraceConfig.Wnode.BufferSize = 1024;
    m_TraceConfig.Wnode.Flags = WNODE_FLAG_TRACED_GUID;
    m_TraceConfig.Wnode.ClientContext = 3;
    m_TraceConfig.BufferSize = 1;
    m_TraceConfig.MinimumBuffers = 16;
    m_TraceConfig.LogFileMode = EVENT_TRACE_REAL_TIME_MODE;

    m_TraceConfig.LoggerNameOffset = 120;
    m_TraceConfig.FlushTimer = 1;

    RtlMoveMemory(m_pTraceConfig + 8, &m_TraceConfig, 120);
    RtlCopyMemory(m_pTraceConfig + 128, SESSION_NAME_FILE, sizeof(SESSION_NAME_FILE));
    RtlCopyMemory(m_pTraceConfig + 128 + sizeof(SESSION_NAME_FILE), m_File, strlen(m_File));
    RtlCopyMemory(m_pTraceConfig + 28, _Flag, sizeof(_Flag));

    ULONG l_result = StartTraceA(&m_hSessionHandle, SESSION_NAME_FILE, (PEVENT_TRACE_PROPERTIES)(m_pTraceConfig + 8));
    
    if (m_hSessionHandle == NULL && l_result == ERROR_ACCESS_DENIED)
    {
        cout << "StartTraceA失敗！原因：無管理員權限！" << endl;
        return 0;
    }
    else if (m_hSessionHandle == NULL && l_result == ERROR_ALREADY_EXISTS)
    {

     m_hSessionHandle = 44;//輸入上一次終止時候的句柄
        CloseEtw();
     
        cout << "StartTraceA失敗！原因：已經有Etw事件進行數據跟蹤！請使用上方屏蔽代碼關閉事件或者使用 計算機管理 停用事件：Sample_Process" << endl;
        ControlTraceA(m_hSessionHandle, SESSION_NAME_FILE, (PEVENT_TRACE_PROPERTIES)(m_pTraceConfig + 8), 1);
        return 0;
    }
    cout << "hSessionHandle： " << m_hSessionHandle << endl;
    const UCHAR m_ProcessGUID[] = { 214, 44, 251, 34, 123, 14, 43, 66, 160, 199, 47, 173, 31, 208, 231, 22 }; // PsProvGuid
    l_result = EnableTraceEx((LPCGUID)(m_ProcessGUID), 0, m_hSessionHandle, 1, 0, 16, 0, 0, 0);         //這里MatchAnyKeyword的64其實是0x40，表示 #KERNEL_KEYWORDS_IMAGE

    EVENT_TRACE_LOGFILEA m_Logfile;
    ZeroMemory(&m_Logfile, sizeof(m_Logfile));
    m_Logfile.LoggerName = SESSION_NAME_FILE;
    *((ULONG*)((PUCHAR)&m_Logfile + 20)) = 268439808;
    m_Logfile.EventRecordCallback = MyProcessRecordEvents;
    m_Logfile.Context = (PVOID)0x114514;//隨便輸入一個數就好了
    SetLastError(0);
    m_hTraceHandle = OpenTraceA(&m_Logfile);

    cout << "開始監視！" << endl;
    m_hTraceHandle_econt[0] = m_hTraceHandle;
    ULONG rc = ProcessTrace(m_hTraceHandle_econt, 1, 0, 0);
    return 0;
}

int main()
{
    CreateThread(NULL, NULL, OpenEtw, NULL, NULL, NULL);
    //Sleep(10000);
    system("pause");
    CloseEtw();
    return 0;
}