/* * This file is part of OpenTTD. * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2. * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see . */ /** @file crashlog_win.cpp Implementation of a crashlogger for Windows */ #include "../../stdafx.h" #include "../../crashlog.h" #include "win32.h" #include "../../core/alloc_func.hpp" #include "../../core/math_func.hpp" #include "../../string_func.h" #include "../../fileio_func.h" #include "../../strings_func.h" #include "../../gamelog.h" #include "../../saveload/saveload.h" #include "../../video/video_driver.hpp" #include #include #include "../../safeguards.h" /* printf format specification for 32/64-bit addresses. */ #ifdef _M_AMD64 #define PRINTF_PTR "0x%016IX" #else #define PRINTF_PTR "0x%08X" #endif /** * Windows implementation for the crash logger. */ class CrashLogWindows : public CrashLog { /** Information about the encountered exception */ EXCEPTION_POINTERS *ep; char *LogOSVersion(char *buffer, const char *last) const override; char *LogError(char *buffer, const char *last, const char *message) const override; char *LogStacktrace(char *buffer, const char *last) const override; char *LogRegisters(char *buffer, const char *last) const override; char *LogModules(char *buffer, const char *last) const override; public: #if defined(_MSC_VER) int WriteCrashDump(char *filename, const char *filename_last) const override; char *AppendDecodedStacktrace(char *buffer, const char *last) const; #else char *AppendDecodedStacktrace(char *buffer, const char *last) const { return buffer; } #endif /* _MSC_VER */ /** Buffer for the generated crash log */ char crashlog[65536]; /** Buffer for the filename of the crash log */ char crashlog_filename[MAX_PATH]; /** Buffer for the filename of the crash dump */ char crashdump_filename[MAX_PATH]; /** Buffer for the filename of the crash screenshot */ char screenshot_filename[MAX_PATH]; /** * A crash log is always generated when it's generated. * @param ep the data related to the exception. */ CrashLogWindows(EXCEPTION_POINTERS *ep = nullptr) : ep(ep) { this->crashlog[0] = '\0'; this->crashlog_filename[0] = '\0'; this->crashdump_filename[0] = '\0'; this->screenshot_filename[0] = '\0'; } /** * Points to the current crash log. */ static CrashLogWindows *current; }; /* static */ CrashLogWindows *CrashLogWindows::current = nullptr; /* virtual */ char *CrashLogWindows::LogOSVersion(char *buffer, const char *last) const { _OSVERSIONINFOA os; os.dwOSVersionInfoSize = sizeof(os); GetVersionExA(&os); return buffer + seprintf(buffer, last, "Operating system:\n" " Name: Windows\n" " Release: %d.%d.%d (%s)\n", (int)os.dwMajorVersion, (int)os.dwMinorVersion, (int)os.dwBuildNumber, os.szCSDVersion ); } /* virtual */ char *CrashLogWindows::LogError(char *buffer, const char *last, const char *message) const { return buffer + seprintf(buffer, last, "Crash reason:\n" " Exception: %.8X\n" #ifdef _M_AMD64 " Location: %.16IX\n" #else " Location: %.8X\n" #endif " Message: %s\n\n", (int)ep->ExceptionRecord->ExceptionCode, (size_t)ep->ExceptionRecord->ExceptionAddress, message == nullptr ? "" : message ); } struct DebugFileInfo { uint32 size; uint32 crc32; SYSTEMTIME file_time; }; static uint32 *_crc_table; static void MakeCRCTable(uint32 *table) { uint32 crc, poly = 0xEDB88320L; int i; int j; _crc_table = table; for (i = 0; i != 256; i++) { crc = i; for (j = 8; j != 0; j--) { crc = (crc & 1 ? (crc >> 1) ^ poly : crc >> 1); } table[i] = crc; } } static uint32 CalcCRC(byte *data, uint size, uint32 crc) { for (; size > 0; size--) { crc = ((crc >> 8) & 0x00FFFFFF) ^ _crc_table[(crc ^ *data++) & 0xFF]; } return crc; } static void GetFileInfo(DebugFileInfo *dfi, const TCHAR *filename) { HANDLE file; memset(dfi, 0, sizeof(*dfi)); file = CreateFile(filename, GENERIC_READ, FILE_SHARE_READ, nullptr, OPEN_EXISTING, 0, 0); if (file != INVALID_HANDLE_VALUE) { byte buffer[1024]; DWORD numread; uint32 filesize = 0; FILETIME write_time; uint32 crc = (uint32)-1; for (;;) { if (ReadFile(file, buffer, sizeof(buffer), &numread, nullptr) == 0 || numread == 0) { break; } filesize += numread; crc = CalcCRC(buffer, numread, crc); } dfi->size = filesize; dfi->crc32 = crc ^ (uint32)-1; if (GetFileTime(file, nullptr, nullptr, &write_time)) { FileTimeToSystemTime(&write_time, &dfi->file_time); } CloseHandle(file); } } static char *PrintModuleInfo(char *output, const char *last, HMODULE mod) { TCHAR buffer[MAX_PATH]; DebugFileInfo dfi; GetModuleFileName(mod, buffer, MAX_PATH); GetFileInfo(&dfi, buffer); output += seprintf(output, last, " %-20s handle: %p size: %d crc: %.8X date: %d-%.2d-%.2d %.2d:%.2d:%.2d\n", FS2OTTD(buffer), mod, dfi.size, dfi.crc32, dfi.file_time.wYear, dfi.file_time.wMonth, dfi.file_time.wDay, dfi.file_time.wHour, dfi.file_time.wMinute, dfi.file_time.wSecond ); return output; } /* virtual */ char *CrashLogWindows::LogModules(char *output, const char *last) const { MakeCRCTable(AllocaM(uint32, 256)); BOOL (WINAPI *EnumProcessModules)(HANDLE, HMODULE*, DWORD, LPDWORD); output += seprintf(output, last, "Module information:\n"); if (LoadLibraryList((Function*)&EnumProcessModules, "psapi.dll\0EnumProcessModules\0\0")) { HMODULE modules[100]; DWORD needed; BOOL res; HANDLE proc = OpenProcess(PROCESS_ALL_ACCESS, FALSE, GetCurrentProcessId()); if (proc != nullptr) { res = EnumProcessModules(proc, modules, sizeof(modules), &needed); CloseHandle(proc); if (res) { size_t count = min(needed / sizeof(HMODULE), lengthof(modules)); for (size_t i = 0; i != count; i++) output = PrintModuleInfo(output, last, modules[i]); return output + seprintf(output, last, "\n"); } } } output = PrintModuleInfo(output, last, nullptr); return output + seprintf(output, last, "\n"); } /* virtual */ char *CrashLogWindows::LogRegisters(char *buffer, const char *last) const { buffer += seprintf(buffer, last, "Registers:\n"); #ifdef _M_AMD64 buffer += seprintf(buffer, last, " RAX: %.16I64X RBX: %.16I64X RCX: %.16I64X RDX: %.16I64X\n" " RSI: %.16I64X RDI: %.16I64X RBP: %.16I64X RSP: %.16I64X\n" " R8: %.16I64X R9: %.16I64X R10: %.16I64X R11: %.16I64X\n" " R12: %.16I64X R13: %.16I64X R14: %.16I64X R15: %.16I64X\n" " RIP: %.16I64X EFLAGS: %.8lX\n", ep->ContextRecord->Rax, ep->ContextRecord->Rbx, ep->ContextRecord->Rcx, ep->ContextRecord->Rdx, ep->ContextRecord->Rsi, ep->ContextRecord->Rdi, ep->ContextRecord->Rbp, ep->ContextRecord->Rsp, ep->ContextRecord->R8, ep->ContextRecord->R9, ep->ContextRecord->R10, ep->ContextRecord->R11, ep->ContextRecord->R12, ep->ContextRecord->R13, ep->ContextRecord->R14, ep->ContextRecord->R15, ep->ContextRecord->Rip, ep->ContextRecord->EFlags ); #elif defined(_M_IX86) buffer += seprintf(buffer, last, " EAX: %.8X EBX: %.8X ECX: %.8X EDX: %.8X\n" " ESI: %.8X EDI: %.8X EBP: %.8X ESP: %.8X\n" " EIP: %.8X EFLAGS: %.8X\n", (int)ep->ContextRecord->Eax, (int)ep->ContextRecord->Ebx, (int)ep->ContextRecord->Ecx, (int)ep->ContextRecord->Edx, (int)ep->ContextRecord->Esi, (int)ep->ContextRecord->Edi, (int)ep->ContextRecord->Ebp, (int)ep->ContextRecord->Esp, (int)ep->ContextRecord->Eip, (int)ep->ContextRecord->EFlags ); #elif defined(_M_ARM64) buffer += seprintf(buffer, last, " X0: %.16I64X X1: %.16I64X X2: %.16I64X X3: %.16I64X\n" " X4: %.16I64X X5: %.16I64X X6: %.16I64X X7: %.16I64X\n" " X8: %.16I64X X9: %.16I64X X10: %.16I64X X11: %.16I64X\n" " X12: %.16I64X X13: %.16I64X X14: %.16I64X X15: %.16I64X\n" " X16: %.16I64X X17: %.16I64X X18: %.16I64X X19: %.16I64X\n" " X20: %.16I64X X21: %.16I64X X22: %.16I64X X23: %.16I64X\n" " X24: %.16I64X X25: %.16I64X X26: %.16I64X X27: %.16I64X\n" " X28: %.16I64X Fp: %.16I64X Lr: %.16I64X\n", ep->ContextRecord->X0, ep->ContextRecord->X1, ep->ContextRecord->X2, ep->ContextRecord->X3, ep->ContextRecord->X4, ep->ContextRecord->X5, ep->ContextRecord->X6, ep->ContextRecord->X7, ep->ContextRecord->X8, ep->ContextRecord->X9, ep->ContextRecord->X10, ep->ContextRecord->X11, ep->ContextRecord->X12, ep->ContextRecord->X13, ep->ContextRecord->X14, ep->ContextRecord->X15, ep->ContextRecord->X16, ep->ContextRecord->X17, ep->ContextRecord->X18, ep->ContextRecord->X19, ep->ContextRecord->X20, ep->ContextRecord->X21, ep->ContextRecord->X22, ep->ContextRecord->X23, ep->ContextRecord->X24, ep->ContextRecord->X25, ep->ContextRecord->X26, ep->ContextRecord->X27, ep->ContextRecord->X28, ep->ContextRecord->Fp, ep->ContextRecord->Lr ); #endif buffer += seprintf(buffer, last, "\n Bytes at instruction pointer:\n"); #ifdef _M_AMD64 byte *b = (byte*)ep->ContextRecord->Rip; #elif defined(_M_IX86) byte *b = (byte*)ep->ContextRecord->Eip; #elif defined(_M_ARM64) byte *b = (byte*)ep->ContextRecord->Pc; #endif for (int i = 0; i != 24; i++) { if (IsBadReadPtr(b, 1)) { buffer += seprintf(buffer, last, " ??"); // OCR: WAS: , 0); } else { buffer += seprintf(buffer, last, " %.2X", *b); } b++; } return buffer + seprintf(buffer, last, "\n\n"); } /* virtual */ char *CrashLogWindows::LogStacktrace(char *buffer, const char *last) const { buffer += seprintf(buffer, last, "Stack trace:\n"); #ifdef _M_AMD64 uint32 *b = (uint32*)ep->ContextRecord->Rsp; #elif defined(_M_IX86) uint32 *b = (uint32*)ep->ContextRecord->Esp; #elif defined(_M_ARM64) uint32 *b = (uint32*)ep->ContextRecord->Sp; #endif for (int j = 0; j != 24; j++) { for (int i = 0; i != 8; i++) { if (IsBadReadPtr(b, sizeof(uint32))) { buffer += seprintf(buffer, last, " ????????"); // OCR: WAS - , 0); } else { buffer += seprintf(buffer, last, " %.8X", *b); } b++; } buffer += seprintf(buffer, last, "\n"); } return buffer + seprintf(buffer, last, "\n"); } #if defined(_MSC_VER) static const uint MAX_SYMBOL_LEN = 512; static const uint MAX_FRAMES = 64; #pragma warning(disable:4091) #include #pragma warning(default:4091) char *CrashLogWindows::AppendDecodedStacktrace(char *buffer, const char *last) const { #define M(x) x "\0" static const char dbg_import[] = M("dbghelp.dll") M("SymInitialize") M("SymSetOptions") M("SymCleanup") M("StackWalk64") M("SymFunctionTableAccess64") M("SymGetModuleBase64") M("SymGetModuleInfo64") M("SymGetSymFromAddr64") M("SymGetLineFromAddr64") M("") ; #undef M struct ProcPtrs { BOOL (WINAPI * pSymInitialize)(HANDLE, PCSTR, BOOL); BOOL (WINAPI * pSymSetOptions)(DWORD); BOOL (WINAPI * pSymCleanup)(HANDLE); BOOL (WINAPI * pStackWalk64)(DWORD, HANDLE, HANDLE, LPSTACKFRAME64, PVOID, PREAD_PROCESS_MEMORY_ROUTINE64, PFUNCTION_TABLE_ACCESS_ROUTINE64, PGET_MODULE_BASE_ROUTINE64, PTRANSLATE_ADDRESS_ROUTINE64); PVOID (WINAPI * pSymFunctionTableAccess64)(HANDLE, DWORD64); DWORD64 (WINAPI * pSymGetModuleBase64)(HANDLE, DWORD64); BOOL (WINAPI * pSymGetModuleInfo64)(HANDLE, DWORD64, PIMAGEHLP_MODULE64); BOOL (WINAPI * pSymGetSymFromAddr64)(HANDLE, DWORD64, PDWORD64, PIMAGEHLP_SYMBOL64); BOOL (WINAPI * pSymGetLineFromAddr64)(HANDLE, DWORD64, PDWORD, PIMAGEHLP_LINE64); } proc; buffer += seprintf(buffer, last, "\nDecoded stack trace:\n"); /* Try to load the functions from the DLL, if that fails because of a too old dbghelp.dll, just skip it. */ if (LoadLibraryList((Function*)&proc, dbg_import)) { /* Initialize symbol handler. */ HANDLE hCur = GetCurrentProcess(); proc.pSymInitialize(hCur, nullptr, TRUE); /* Load symbols only when needed, fail silently on errors, demangle symbol names. */ proc.pSymSetOptions(SYMOPT_DEFERRED_LOADS | SYMOPT_FAIL_CRITICAL_ERRORS | SYMOPT_UNDNAME); /* Initialize starting stack frame from context record. */ STACKFRAME64 frame; memset(&frame, 0, sizeof(frame)); #ifdef _M_AMD64 frame.AddrPC.Offset = ep->ContextRecord->Rip; frame.AddrFrame.Offset = ep->ContextRecord->Rbp; frame.AddrStack.Offset = ep->ContextRecord->Rsp; #elif defined(_M_IX86) frame.AddrPC.Offset = ep->ContextRecord->Eip; frame.AddrFrame.Offset = ep->ContextRecord->Ebp; frame.AddrStack.Offset = ep->ContextRecord->Esp; #elif defined(_M_ARM64) frame.AddrPC.Offset = ep->ContextRecord->Pc; frame.AddrFrame.Offset = ep->ContextRecord->Fp; frame.AddrStack.Offset = ep->ContextRecord->Sp; #endif frame.AddrPC.Mode = AddrModeFlat; frame.AddrFrame.Mode = AddrModeFlat; frame.AddrStack.Mode = AddrModeFlat; /* Copy context record as StackWalk64 may modify it. */ CONTEXT ctx; memcpy(&ctx, ep->ContextRecord, sizeof(ctx)); /* Allocate space for symbol info. */ IMAGEHLP_SYMBOL64 *sym_info = (IMAGEHLP_SYMBOL64*)alloca(sizeof(IMAGEHLP_SYMBOL64) + MAX_SYMBOL_LEN - 1); sym_info->SizeOfStruct = sizeof(IMAGEHLP_SYMBOL64); sym_info->MaxNameLength = MAX_SYMBOL_LEN; /* Walk stack at most MAX_FRAMES deep in case the stack is corrupt. */ for (uint num = 0; num < MAX_FRAMES; num++) { if (!proc.pStackWalk64( #ifdef _M_AMD64 IMAGE_FILE_MACHINE_AMD64, #else IMAGE_FILE_MACHINE_I386, #endif hCur, GetCurrentThread(), &frame, &ctx, nullptr, proc.pSymFunctionTableAccess64, proc.pSymGetModuleBase64, nullptr)) break; if (frame.AddrPC.Offset == frame.AddrReturn.Offset) { buffer += seprintf(buffer, last, " \n"); break; } /* Get module name. */ const char *mod_name = "???"; IMAGEHLP_MODULE64 module; module.SizeOfStruct = sizeof(module); if (proc.pSymGetModuleInfo64(hCur, frame.AddrPC.Offset, &module)) { mod_name = module.ModuleName; } /* Print module and instruction pointer. */ buffer += seprintf(buffer, last, "[%02d] %-20s " PRINTF_PTR, num, mod_name, frame.AddrPC.Offset); /* Get symbol name and line info if possible. */ DWORD64 offset; if (proc.pSymGetSymFromAddr64(hCur, frame.AddrPC.Offset, &offset, sym_info)) { buffer += seprintf(buffer, last, " %s + %I64u", sym_info->Name, offset); DWORD line_offs; IMAGEHLP_LINE64 line; line.SizeOfStruct = sizeof(IMAGEHLP_LINE64); if (proc.pSymGetLineFromAddr64(hCur, frame.AddrPC.Offset, &line_offs, &line)) { buffer += seprintf(buffer, last, " (%s:%d)", line.FileName, line.LineNumber); } } buffer += seprintf(buffer, last, "\n"); } proc.pSymCleanup(hCur); } return buffer + seprintf(buffer, last, "\n*** End of additional info ***\n"); } /* virtual */ int CrashLogWindows::WriteCrashDump(char *filename, const char *filename_last) const { int ret = 0; HMODULE dbghelp = LoadLibrary(_T("dbghelp.dll")); if (dbghelp != nullptr) { typedef BOOL (WINAPI *MiniDumpWriteDump_t)(HANDLE, DWORD, HANDLE, MINIDUMP_TYPE, CONST PMINIDUMP_EXCEPTION_INFORMATION, CONST PMINIDUMP_USER_STREAM_INFORMATION, CONST PMINIDUMP_CALLBACK_INFORMATION); MiniDumpWriteDump_t funcMiniDumpWriteDump = (MiniDumpWriteDump_t)GetProcAddress(dbghelp, "MiniDumpWriteDump"); if (funcMiniDumpWriteDump != nullptr) { seprintf(filename, filename_last, "%scrash.dmp", _personal_dir.c_str()); HANDLE file = CreateFile(OTTD2FS(filename), GENERIC_WRITE, 0, nullptr, CREATE_ALWAYS, 0, 0); HANDLE proc = GetCurrentProcess(); DWORD procid = GetCurrentProcessId(); MINIDUMP_EXCEPTION_INFORMATION mdei; MINIDUMP_USER_STREAM userstream; MINIDUMP_USER_STREAM_INFORMATION musi; userstream.Type = LastReservedStream + 1; userstream.Buffer = (void*)this->crashlog; userstream.BufferSize = (ULONG)strlen(this->crashlog) + 1; musi.UserStreamCount = 1; musi.UserStreamArray = &userstream; mdei.ThreadId = GetCurrentThreadId(); mdei.ExceptionPointers = ep; mdei.ClientPointers = false; funcMiniDumpWriteDump(proc, procid, file, MiniDumpWithDataSegs, &mdei, &musi, nullptr); ret = 1; } else { ret = -1; } FreeLibrary(dbghelp); } return ret; } #endif /* _MSC_VER */ extern bool CloseConsoleLogIfActive(); static void ShowCrashlogWindow(); /** * Stack pointer for use when 'starting' the crash handler. * Not static as gcc's inline assembly needs it that way. */ void *_safe_esp = nullptr; static LONG WINAPI ExceptionHandler(EXCEPTION_POINTERS *ep) { /* Disable our event loop. */ SetWindowLongPtr(GetActiveWindow(), GWLP_WNDPROC, (LONG_PTR)&DefWindowProc); if (CrashLogWindows::current != nullptr) { CrashLog::AfterCrashLogCleanup(); ExitProcess(2); } if (GamelogTestEmergency()) { static const TCHAR _emergency_crash[] = _T("A serious fault condition occurred in the game. The game will shut down.\n") _T("As you loaded an emergency savegame no crash information will be generated.\n"); MessageBox(nullptr, _emergency_crash, _T("Fatal Application Failure"), MB_ICONERROR); ExitProcess(3); } if (SaveloadCrashWithMissingNewGRFs()) { static const TCHAR _saveload_crash[] = _T("A serious fault condition occurred in the game. The game will shut down.\n") _T("As you loaded an savegame for which you do not have the required NewGRFs\n") _T("no crash information will be generated.\n"); MessageBox(nullptr, _saveload_crash, _T("Fatal Application Failure"), MB_ICONERROR); ExitProcess(3); } CrashLogWindows *log = new CrashLogWindows(ep); CrashLogWindows::current = log; char *buf = log->FillCrashLog(log->crashlog, lastof(log->crashlog)); log->WriteCrashDump(log->crashdump_filename, lastof(log->crashdump_filename)); log->AppendDecodedStacktrace(buf, lastof(log->crashlog)); log->WriteCrashLog(log->crashlog, log->crashlog_filename, lastof(log->crashlog_filename)); log->WriteScreenshot(log->screenshot_filename, lastof(log->screenshot_filename)); /* Close any possible log files */ CloseConsoleLogIfActive(); if ((VideoDriver::GetInstance() == nullptr || VideoDriver::GetInstance()->HasGUI()) && _safe_esp != nullptr) { #ifdef _M_AMD64 ep->ContextRecord->Rip = (DWORD64)ShowCrashlogWindow; ep->ContextRecord->Rsp = (DWORD64)_safe_esp; #elif defined(_M_IX86) ep->ContextRecord->Eip = (DWORD)ShowCrashlogWindow; ep->ContextRecord->Esp = (DWORD)_safe_esp; #elif defined(_M_ARM64) ep->ContextRecord->Pc = (DWORD64)ShowCrashlogWindow; ep->ContextRecord->Sp = (DWORD64)_safe_esp; #endif return EXCEPTION_CONTINUE_EXECUTION; } CrashLog::AfterCrashLogCleanup(); return EXCEPTION_EXECUTE_HANDLER; } static void CDECL CustomAbort(int signal) { RaiseException(0xE1212012, 0, 0, nullptr); } /* static */ void CrashLog::InitialiseCrashLog() { #if defined(_M_AMD64) || defined(_M_ARM64) CONTEXT ctx; RtlCaptureContext(&ctx); /* The stack pointer for AMD64 must always be 16-byte aligned inside a * function. As we are simulating a function call with the safe ESP value, * we need to subtract 8 for the imaginary return address otherwise stack * alignment would be wrong in the called function. */ #if defined(_M_ARM64) _safe_esp = (void *)(ctx.Sp - 8); #else _safe_esp = (void *)(ctx.Rsp - 8); #endif #else #if defined(_MSC_VER) _asm { mov _safe_esp, esp } #else asm("movl %esp, __safe_esp"); #endif #endif /* SIGABRT is not an unhandled exception, so we need to intercept it. */ signal(SIGABRT, CustomAbort); #if defined(_MSC_VER) /* Don't show abort message as we will get the crashlog window anyway. */ _set_abort_behavior(0, _WRITE_ABORT_MSG); #endif SetUnhandledExceptionFilter(ExceptionHandler); } /* The crash log GUI */ static bool _expanded; static const TCHAR _crash_desc[] = _T("A serious fault condition occurred in the game. The game will shut down.\n") _T("Please send the crash information and the crash.dmp file (if any) to the developers.\n") _T("This will greatly help debugging. The correct place to do this is https://github.com/OpenTTD/OpenTTD/issues. ") _T("The information contained in the report is displayed below.\n") _T("Press \"Emergency save\" to attempt saving the game. Generated file(s):\n") _T("%s"); static const TCHAR _save_succeeded[] = _T("Emergency save succeeded.\nIts location is '%s'.\n") _T("Be aware that critical parts of the internal game state may have become ") _T("corrupted. The saved game is not guaranteed to work."); static const TCHAR * const _expand_texts[] = {_T("S&how report >>"), _T("&Hide report <<") }; static void SetWndSize(HWND wnd, int mode) { RECT r, r2; GetWindowRect(wnd, &r); SetDlgItemText(wnd, 15, _expand_texts[mode == 1]); if (mode >= 0) { GetWindowRect(GetDlgItem(wnd, 11), &r2); int offs = r2.bottom - r2.top + 10; if (mode == 0) offs = -offs; SetWindowPos(wnd, HWND_TOPMOST, 0, 0, r.right - r.left, r.bottom - r.top + offs, SWP_NOMOVE | SWP_NOZORDER); } else { SetWindowPos(wnd, HWND_TOPMOST, (GetSystemMetrics(SM_CXSCREEN) - (r.right - r.left)) / 2, (GetSystemMetrics(SM_CYSCREEN) - (r.bottom - r.top)) / 2, 0, 0, SWP_NOSIZE); } } /* When TCHAR is char, then _sntprintf becomes snprintf. When TCHAR is wchar it doesn't. Likewise for strcat. */ #undef snprintf #undef strcat static INT_PTR CALLBACK CrashDialogFunc(HWND wnd, UINT msg, WPARAM wParam, LPARAM lParam) { switch (msg) { case WM_INITDIALOG: { /* We need to put the crash-log in a separate buffer because the default * buffer in MB_TO_WIDE is not large enough (512 chars) */ TCHAR crash_msgW[lengthof(CrashLogWindows::current->crashlog)]; /* Convert unix -> dos newlines because the edit box only supports that properly :( */ const char *unix_nl = CrashLogWindows::current->crashlog; char dos_nl[lengthof(CrashLogWindows::current->crashlog)]; char *p = dos_nl; WChar c; while ((c = Utf8Consume(&unix_nl)) && p < lastof(dos_nl) - 4) { // 4 is max number of bytes per character if (c == '\n') p += Utf8Encode(p, '\r'); p += Utf8Encode(p, c); } *p = '\0'; /* Add path to crash.log and crash.dmp (if any) to the crash window text */ size_t len = _tcslen(_crash_desc) + 2; len += _tcslen(OTTD2FS(CrashLogWindows::current->crashlog_filename)) + 2; len += _tcslen(OTTD2FS(CrashLogWindows::current->crashdump_filename)) + 2; len += _tcslen(OTTD2FS(CrashLogWindows::current->screenshot_filename)) + 1; TCHAR *text = AllocaM(TCHAR, len); _sntprintf(text, len, _crash_desc, OTTD2FS(CrashLogWindows::current->crashlog_filename)); if (OTTD2FS(CrashLogWindows::current->crashdump_filename)[0] != _T('\0')) { _tcscat(text, _T("\n")); _tcscat(text, OTTD2FS(CrashLogWindows::current->crashdump_filename)); } if (OTTD2FS(CrashLogWindows::current->screenshot_filename)[0] != _T('\0')) { _tcscat(text, _T("\n")); _tcscat(text, OTTD2FS(CrashLogWindows::current->screenshot_filename)); } SetDlgItemText(wnd, 10, text); SetDlgItemText(wnd, 11, convert_to_fs(dos_nl, crash_msgW, lengthof(crash_msgW))); SendDlgItemMessage(wnd, 11, WM_SETFONT, (WPARAM)GetStockObject(ANSI_FIXED_FONT), FALSE); SetWndSize(wnd, -1); } return TRUE; case WM_COMMAND: switch (wParam) { case 12: // Close CrashLog::AfterCrashLogCleanup(); ExitProcess(2); case 13: // Emergency save char filename[MAX_PATH]; if (CrashLogWindows::current->WriteSavegame(filename, lastof(filename))) { size_t len = _tcslen(_save_succeeded) + _tcslen(OTTD2FS(filename)) + 1; TCHAR *text = AllocaM(TCHAR, len); _sntprintf(text, len, _save_succeeded, OTTD2FS(filename)); MessageBox(wnd, text, _T("Save successful"), MB_ICONINFORMATION); } else { MessageBox(wnd, _T("Save failed"), _T("Save failed"), MB_ICONINFORMATION); } break; case 15: // Expand window to show crash-message _expanded ^= 1; SetWndSize(wnd, _expanded); break; } return TRUE; case WM_CLOSE: CrashLog::AfterCrashLogCleanup(); ExitProcess(2); } return FALSE; } static void ShowCrashlogWindow() { ShowCursor(TRUE); ShowWindow(GetActiveWindow(), FALSE); DialogBox(GetModuleHandle(nullptr), MAKEINTRESOURCE(100), nullptr, CrashDialogFunc); }