ApfelTeeSaft/UniversalSlashingSimulator
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UniversalSlashingSimulator/Core/Diagnostics/CrashHandler.cpp
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/**
* UniversalSlashingSimulator - Crash Handler Implementation
*/
#include "CrashHandler.h"
#include "../Logging/Log.h"
#include <DbgHelp.h>
#include <cstdio>
#include <ctime>
#pragma comment(lib, "DbgHelp.lib")
namespace USS
{
// Static member initialization
bool FCrashHandler::s_bInitialized = false;
bool FCrashHandler::s_bShowMessageBox = true;
bool FCrashHandler::s_bWriteMinidump = true;
LPTOP_LEVEL_EXCEPTION_FILTER FCrashHandler::s_pPreviousFilter = nullptr;
std::terminate_handler FCrashHandler::s_pPreviousTerminate = nullptr;
// Maximum frames to capture in callstack
constexpr int MAX_CALLSTACK_FRAMES = 64;
// ========================================================================
// Exception Type Conversion
// ========================================================================
const char* ExceptionTypeToString(EExceptionType Type)
{
switch (Type)
{
case EExceptionType::CPlusPlusException: return "C++ Exception";
case EExceptionType::AccessViolation: return "Access Violation";
case EExceptionType::StackOverflow: return "Stack Overflow";
case EExceptionType::DivideByZero: return "Divide By Zero";
case EExceptionType::IllegalInstruction: return "Illegal Instruction";
case EExceptionType::PrivilegedInstruction: return "Privileged Instruction";
case EExceptionType::InvalidHandle: return "Invalid Handle";
case EExceptionType::HeapCorruption: return "Heap Corruption";
case EExceptionType::PureVirtualCall: return "Pure Virtual Call";
case EExceptionType::InvalidParameter: return "Invalid Parameter";
case EExceptionType::Other: return "Other Exception";
default: return "Unknown Exception";
}
}
EExceptionType FCrashHandler::GetExceptionType(DWORD ExceptionCode)
{
switch (ExceptionCode)
{
case EXCEPTION_ACCESS_VIOLATION: return EExceptionType::AccessViolation;
case EXCEPTION_STACK_OVERFLOW: return EExceptionType::StackOverflow;
case EXCEPTION_INT_DIVIDE_BY_ZERO: return EExceptionType::DivideByZero;
case EXCEPTION_ILLEGAL_INSTRUCTION: return EExceptionType::IllegalInstruction;
case EXCEPTION_PRIV_INSTRUCTION: return EExceptionType::PrivilegedInstruction;
case EXCEPTION_INVALID_HANDLE: return EExceptionType::InvalidHandle;
case STATUS_HEAP_CORRUPTION: return EExceptionType::HeapCorruption;
case 0xE06D7363: return EExceptionType::CPlusPlusException; // MSVC C++ exception
default: return EExceptionType::Other;
}
}
// ========================================================================
// Initialization / Shutdown
// ========================================================================
EResult FCrashHandler::Initialize()
{
if (s_bInitialized)
return EResult::AlreadyInitialized;
SymSetOptions(SYMOPT_UNDNAME | SYMOPT_DEFERRED_LOADS | SYMOPT_LOAD_LINES);
if (!SymInitialize(GetCurrentProcess(), nullptr, TRUE))
{
// Non-fatal - callstacks just won't have symbol names
OutputDebugStringA("[USS] Warning: SymInitialize failed, callstacks will not have symbol names\n");
}
s_pPreviousFilter = SetUnhandledExceptionFilter(UnhandledExceptionHandler);
s_pPreviousTerminate = std::set_terminate(TerminateHandler);
_set_purecall_handler(PureCallHandler);
_set_invalid_parameter_handler(InvalidParameterHandler);
s_bInitialized = true;
USS_LOG("Crash handler initialized");
return EResult::Success;
}
void FCrashHandler::Shutdown()
{
if (!s_bInitialized)
return;
if (s_pPreviousFilter)
SetUnhandledExceptionFilter(s_pPreviousFilter);
if (s_pPreviousTerminate)
std::set_terminate(s_pPreviousTerminate);
SymCleanup(GetCurrentProcess());
s_bInitialized = false;
}
// ========================================================================
// Callstack Capture
// ========================================================================
void FCrashHandler::CaptureAndLogCallstack(CONTEXT* pContext)
{
void* Stack[MAX_CALLSTACK_FRAMES];
WORD FrameCount = 0;
if (pContext)
{
// Use StackWalk64 for more accurate results when we have a context
STACKFRAME64 StackFrame = {};
DWORD MachineType;
#ifdef _M_X64
MachineType = IMAGE_FILE_MACHINE_AMD64;
StackFrame.AddrPC.Offset = pContext->Rip;
StackFrame.AddrPC.Mode = AddrModeFlat;
StackFrame.AddrFrame.Offset = pContext->Rbp;
StackFrame.AddrFrame.Mode = AddrModeFlat;
StackFrame.AddrStack.Offset = pContext->Rsp;
StackFrame.AddrStack.Mode = AddrModeFlat;
#else
MachineType = IMAGE_FILE_MACHINE_I386;
StackFrame.AddrPC.Offset = pContext->Eip;
StackFrame.AddrPC.Mode = AddrModeFlat;
StackFrame.AddrFrame.Offset = pContext->Ebp;
StackFrame.AddrFrame.Mode = AddrModeFlat;
StackFrame.AddrStack.Offset = pContext->Esp;
StackFrame.AddrStack.Mode = AddrModeFlat;
#endif
HANDLE hProcess = GetCurrentProcess();
HANDLE hThread = GetCurrentThread();
// Make a copy of context since StackWalk64 can modify it
CONTEXT ContextCopy = *pContext;
for (WORD i = 0; i < MAX_CALLSTACK_FRAMES; ++i)
{
if (!StackWalk64(MachineType, hProcess, hThread, &StackFrame, &ContextCopy,
nullptr, SymFunctionTableAccess64, SymGetModuleBase64, nullptr))
{
break;
}
if (StackFrame.AddrPC.Offset == 0)
break;
Stack[FrameCount++] = reinterpret_cast<void*>(StackFrame.AddrPC.Offset);
}
}
else
{
// No context provided, capture current callstack
FrameCount = CaptureStackBackTrace(0, MAX_CALLSTACK_FRAMES, Stack, nullptr);
}
// Log callstack header
Log::Write(ELogLevel::Fatal, "========== CALLSTACK ==========");
if (FrameCount == 0)
{
Log::Write(ELogLevel::Fatal, " (No frames captured)");
return;
}
// Prepare symbol info buffer
constexpr size_t MaxNameLen = 256;
char SymbolBuffer[sizeof(SYMBOL_INFO) + MaxNameLen];
SYMBOL_INFO* pSymbol = reinterpret_cast<SYMBOL_INFO*>(SymbolBuffer);
pSymbol->SizeOfStruct = sizeof(SYMBOL_INFO);
pSymbol->MaxNameLen = MaxNameLen;
IMAGEHLP_LINE64 LineInfo = {};
LineInfo.SizeOfStruct = sizeof(IMAGEHLP_LINE64);
HANDLE hProcess = GetCurrentProcess();
for (WORD i = 0; i < FrameCount; ++i)
{
DWORD64 Address = reinterpret_cast<DWORD64>(Stack[i]);
// Get module name
HMODULE hModule = nullptr;
char ModuleName[MAX_PATH] = "<unknown>";
if (GetModuleHandleExA(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS | GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
reinterpret_cast<LPCSTR>(Address), &hModule))
{
GetModuleFileNameA(hModule, ModuleName, MAX_PATH);
char* LastSlash = strrchr(ModuleName, '\\');
if (LastSlash)
memmove(ModuleName, LastSlash + 1, strlen(LastSlash));
}
DWORD64 Displacement64 = 0;
const char* SymbolName = "<unknown>";
if (SymFromAddr(hProcess, Address, &Displacement64, pSymbol))
{
SymbolName = pSymbol->Name;
}
DWORD Displacement32 = 0;
char LocationBuffer[512];
if (SymGetLineFromAddr64(hProcess, Address, &Displacement32, &LineInfo))
{
snprintf(LocationBuffer, sizeof(LocationBuffer),
" [%02d] 0x%llX %s!%s + 0x%llX (%s:%lu)",
i, Address, ModuleName, SymbolName, Displacement64,
LineInfo.FileName, LineInfo.LineNumber);
}
else
{
snprintf(LocationBuffer, sizeof(LocationBuffer),
" [%02d] 0x%llX %s!%s + 0x%llX",
i, Address, ModuleName, SymbolName, Displacement64);
}
Log::Write(ELogLevel::Fatal, "%s", LocationBuffer);
}
Log::Write(ELogLevel::Fatal, "================================");
}
// ========================================================================
// Exception Info Logging
// ========================================================================
void FCrashHandler::LogExceptionInfo(EXCEPTION_POINTERS* pExceptionInfo)
{
if (!pExceptionInfo || !pExceptionInfo->ExceptionRecord)
return;
EXCEPTION_RECORD* pRecord = pExceptionInfo->ExceptionRecord;
EExceptionType Type = GetExceptionType(pRecord->ExceptionCode);
Log::Write(ELogLevel::Fatal, "");
Log::Write(ELogLevel::Fatal, "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
Log::Write(ELogLevel::Fatal, "!! UNHANDLED EXCEPTION !!");
Log::Write(ELogLevel::Fatal, "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
Log::Write(ELogLevel::Fatal, "");
Log::Write(ELogLevel::Fatal, "Exception Type: %s", ExceptionTypeToString(Type));
Log::Write(ELogLevel::Fatal, "Exception Code: 0x%08X", pRecord->ExceptionCode);
Log::Write(ELogLevel::Fatal, "Exception Address: 0x%llX", reinterpret_cast<uint64>(pRecord->ExceptionAddress));
if (pRecord->ExceptionCode == EXCEPTION_ACCESS_VIOLATION && pRecord->NumberParameters >= 2)
{
const char* AccessType = (pRecord->ExceptionInformation[0] == 0) ? "reading" :
(pRecord->ExceptionInformation[0] == 1) ? "writing" : "executing";
Log::Write(ELogLevel::Fatal, "Access Type: %s address 0x%llX", AccessType, pRecord->ExceptionInformation[1]);
}
if (pExceptionInfo->ContextRecord)
{
CONTEXT* pCtx = pExceptionInfo->ContextRecord;
Log::Write(ELogLevel::Fatal, "");
Log::Write(ELogLevel::Fatal, "========== REGISTERS ==========");
#ifdef _M_X64
Log::Write(ELogLevel::Fatal, "RAX: 0x%016llX RBX: 0x%016llX", pCtx->Rax, pCtx->Rbx);
Log::Write(ELogLevel::Fatal, "RCX: 0x%016llX RDX: 0x%016llX", pCtx->Rcx, pCtx->Rdx);
Log::Write(ELogLevel::Fatal, "RSI: 0x%016llX RDI: 0x%016llX", pCtx->Rsi, pCtx->Rdi);
Log::Write(ELogLevel::Fatal, "RBP: 0x%016llX RSP: 0x%016llX", pCtx->Rbp, pCtx->Rsp);
Log::Write(ELogLevel::Fatal, "R8: 0x%016llX R9: 0x%016llX", pCtx->R8, pCtx->R9);
Log::Write(ELogLevel::Fatal, "R10: 0x%016llX R11: 0x%016llX", pCtx->R10, pCtx->R11);
Log::Write(ELogLevel::Fatal, "R12: 0x%016llX R13: 0x%016llX", pCtx->R12, pCtx->R13);
Log::Write(ELogLevel::Fatal, "R14: 0x%016llX R15: 0x%016llX", pCtx->R14, pCtx->R15);
Log::Write(ELogLevel::Fatal, "RIP: 0x%016llX", pCtx->Rip);
#else
Log::Write(ELogLevel::Fatal, "EAX: 0x%08X EBX: 0x%08X", pCtx->Eax, pCtx->Ebx);
Log::Write(ELogLevel::Fatal, "ECX: 0x%08X EDX: 0x%08X", pCtx->Ecx, pCtx->Edx);
Log::Write(ELogLevel::Fatal, "ESI: 0x%08X EDI: 0x%08X", pCtx->Esi, pCtx->Edi);
Log::Write(ELogLevel::Fatal, "EBP: 0x%08X ESP: 0x%08X", pCtx->Ebp, pCtx->Esp);
Log::Write(ELogLevel::Fatal, "EIP: 0x%08X", pCtx->Eip);
#endif
Log::Write(ELogLevel::Fatal, "================================");
}
Log::Write(ELogLevel::Fatal, "");
CaptureAndLogCallstack(pExceptionInfo->ContextRecord);
}
// ========================================================================
// Minidump Writing
// ========================================================================
void FCrashHandler::WriteMinidumpFile(EXCEPTION_POINTERS* pExceptionInfo)
{
if (!s_bWriteMinidump)
return;
char DumpPath[MAX_PATH];
time_t Now = time(nullptr);
struct tm TimeInfo;
localtime_s(&TimeInfo, &Now);
char Timestamp[64];
strftime(Timestamp, sizeof(Timestamp), "%Y%m%d_%H%M%S", &TimeInfo);
snprintf(DumpPath, sizeof(DumpPath), "USS_Crash_%s.dmp", Timestamp);
HANDLE hFile = CreateFileA(DumpPath, GENERIC_WRITE, 0, nullptr, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, nullptr);
if (hFile == INVALID_HANDLE_VALUE)
{
Log::Write(ELogLevel::Fatal, "Failed to create minidump file: %s", DumpPath);
return;
}
MINIDUMP_EXCEPTION_INFORMATION ExInfo = {};
ExInfo.ThreadId = GetCurrentThreadId();
ExInfo.ExceptionPointers = pExceptionInfo;
ExInfo.ClientPointers = FALSE;
BOOL bSuccess = MiniDumpWriteDump(
GetCurrentProcess(),
GetCurrentProcessId(),
hFile,
static_cast<MINIDUMP_TYPE>(MiniDumpWithDataSegs | MiniDumpWithHandleData | MiniDumpWithThreadInfo),
pExceptionInfo ? &ExInfo : nullptr,
nullptr,
nullptr);
CloseHandle(hFile);
if (bSuccess)
{
Log::Write(ELogLevel::Fatal, "Minidump written to: %s", DumpPath);
}
else
{
Log::Write(ELogLevel::Fatal, "Failed to write minidump (error: %lu)", GetLastError());
}
}
// ========================================================================
// Exception Handlers
// ========================================================================
LONG WINAPI FCrashHandler::UnhandledExceptionHandler(EXCEPTION_POINTERS* pExceptionInfo)
{
LogExceptionInfo(pExceptionInfo);
WriteMinidumpFile(pExceptionInfo);
if (s_bShowMessageBox)
{
char Message[512];
EExceptionType Type = GetExceptionType(pExceptionInfo->ExceptionRecord->ExceptionCode);
snprintf(Message, sizeof(Message),
"UniversalSlashingSimulator has crashed!\n\n"
"Exception: %s (0x%08X)\n\n"
"A crash dump has been written.\n"
"Check the log file for detailed callstack information.",
ExceptionTypeToString(Type),
pExceptionInfo->ExceptionRecord->ExceptionCode);
MessageBoxA(nullptr, Message, "USS Crash", MB_OK | MB_ICONERROR);
}
if (s_pPreviousFilter)
return s_pPreviousFilter(pExceptionInfo);
return EXCEPTION_EXECUTE_HANDLER;
}
void FCrashHandler::TerminateHandler()
{
Log::Write(ELogLevel::Fatal, "");
Log::Write(ELogLevel::Fatal, "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
Log::Write(ELogLevel::Fatal, "!! std::terminate() CALLED !!");
Log::Write(ELogLevel::Fatal, "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
Log::Write(ELogLevel::Fatal, "");
std::exception_ptr pException = std::current_exception();
if (pException)
{
try
{
std::rethrow_exception(pException);
}
catch (const std::exception& e)
{
Log::Write(ELogLevel::Fatal, "C++ Exception: %s", e.what());
}
catch (...)
{
Log::Write(ELogLevel::Fatal, "Unknown C++ exception");
}
}
CaptureAndLogCallstack(nullptr);
if (s_bShowMessageBox)
{
MessageBoxA(nullptr,
"UniversalSlashingSimulator has terminated unexpectedly!\n\n"
"An unhandled C++ exception occurred.\n\n"
"Check the log file for detailed callstack information.",
"USS Crash", MB_OK | MB_ICONERROR);
}
if (s_pPreviousTerminate)
s_pPreviousTerminate();
else
std::abort();
}
void FCrashHandler::PureCallHandler()
{
Log::Write(ELogLevel::Fatal, "");
Log::Write(ELogLevel::Fatal, "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
Log::Write(ELogLevel::Fatal, "!! PURE VIRTUAL FUNCTION CALL !!");
Log::Write(ELogLevel::Fatal, "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
Log::Write(ELogLevel::Fatal, "");
CaptureAndLogCallstack(nullptr);
if (s_bShowMessageBox)
{
MessageBoxA(nullptr,
"UniversalSlashingSimulator has crashed!\n\n"
"A pure virtual function was called.\n\n"
"Check the log file for detailed callstack information.",
"USS Crash", MB_OK | MB_ICONERROR);
}
std::abort();
}
void FCrashHandler::InvalidParameterHandler(
const wchar_t* Expression,
const wchar_t* Function,
const wchar_t* File,
unsigned int Line,
uintptr_t Reserved)
{
(void)Reserved;
Log::Write(ELogLevel::Fatal, "");
Log::Write(ELogLevel::Fatal, "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
Log::Write(ELogLevel::Fatal, "!! INVALID CRT PARAMETER !!");
Log::Write(ELogLevel::Fatal, "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
Log::Write(ELogLevel::Fatal, "");
if (Expression)
Log::Write(ELogLevel::Fatal, "Expression: %ls", Expression);
if (Function)
Log::Write(ELogLevel::Fatal, "Function: %ls", Function);
if (File)
Log::Write(ELogLevel::Fatal, "File: %ls:%u", File, Line);
CaptureAndLogCallstack(nullptr);
if (s_bShowMessageBox)
{
MessageBoxA(nullptr,
"UniversalSlashingSimulator has crashed!\n\n"
"An invalid parameter was passed to a CRT function.\n\n"
"Check the log file for detailed callstack information.",
"USS Crash", MB_OK | MB_ICONERROR);
}
std::abort();
}
// ========================================================================
// Manual Dump
// ========================================================================
void FCrashHandler::DumpCallstack(const char* Reason)
{
Log::Write(ELogLevel::Warning, "");
Log::Write(ELogLevel::Warning, "========== MANUAL CALLSTACK DUMP ==========");
if (Reason)
Log::Write(ELogLevel::Warning, "Reason: %s", Reason);
Log::Write(ELogLevel::Warning, "");
CaptureAndLogCallstack(nullptr);
}
}
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