+
−/* $Id$ */
+
−
+
−/*
+
− * 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 <http://www.gnu.org/licenses/>.
+
− */
+
−
+
−/** @file crashlog_win.cpp Implementation of a crashlogger for Windows */
+
−
+
−#include "../../stdafx.h"
+
−#if defined(_MSC_VER) && defined(_M_AMD64)
+
−/* Redefine WinNT version to get RtlCaptureContext prototype. */
+
−#undef _WIN32_WINNT
+
−#undef NTDDI_VERSION
+
−#define _WIN32_WINNT _WIN32_WINNT_WINXP
+
−#endif /* defined(_MSC_VER) && defined(_M_AMD64) */
+
−#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 <windows.h>
+
−#include <signal.h>
+
−
+
−static const uint MAX_SYMBOL_LEN = 512;
+
−static const uint MAX_FRAMES     = 64;
+
−
+
−/* 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;
+
−
+
−	/* virtual */ char *LogOSVersion(char *buffer, const char *last) const;
+
−	/* virtual */ char *LogError(char *buffer, const char *last, const char *message) const;
+
−	/* virtual */ char *LogStacktrace(char *buffer, const char *last) const;
+
−	/* virtual */ char *LogRegisters(char *buffer, const char *last) const;
+
−	/* virtual */ char *LogModules(char *buffer, const char *last) const;
+
−public:
+
−#if defined(_MSC_VER)
+
−	/* virtual */ int WriteCrashDump(char *filename, const char *filename_last) const;
+
−	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 = NULL) :
+
−		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 = NULL;
+
−
+
−/* 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 == NULL ? "<none>" : 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, NULL, 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, NULL) == 0 || numread == 0) {
+
−				break;
+
−			}
+
−			filesize += numread;
+
−			crc = CalcCRC(buffer, numread, crc);
+
−		}
+
−		dfi->size = filesize;
+
−		dfi->crc32 = crc ^ (uint32)-1;
+
−
+
−		if (GetFileTime(file, NULL, NULL, &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",
+
−		WIDE_TO_MB(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 != NULL) {
+
−			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, NULL);
+
−	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: %.16llX RBX: %.16llX RCX: %.16llX RDX: %.16llX\n"
+
−		" RSI: %.16llX RDI: %.16llX RBP: %.16llX RSP: %.16llX\n"
+
−		" R8:  %.16llX R9:  %.16llX R10: %.16llX R11: %.16llX\n"
+
−		" R12: %.16llX R13: %.16llX R14: %.16llX R15: %.16llX\n"
+
−		" RIP: %.16llX EFLAGS: %.8X\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
+
−	);
+
−#else
+
−	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
+
−	);
+
−#endif
+
−
+
−	buffer += seprintf(buffer, last, "\n Bytes at instruction pointer:\n");
+
−#ifdef _M_AMD64
+
−	byte *b = (byte*)ep->ContextRecord->Rip;
+
−#else
+
−	byte *b = (byte*)ep->ContextRecord->Eip;
+
−#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;
+
−#else
+
−	uint32 *b = (uint32*)ep->ContextRecord->Esp;
+
−#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)
+
−#include <dbghelp.h>
+
−
+
−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, NULL, 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;
+
−#else
+
−		frame.AddrPC.Offset = ep->ContextRecord->Eip;
+
−		frame.AddrFrame.Offset = ep->ContextRecord->Ebp;
+
−		frame.AddrStack.Offset = ep->ContextRecord->Esp;
+
−#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, NULL, proc.pSymFunctionTableAccess64, proc.pSymGetModuleBase64, NULL)) break;
+
−
+
−			if (frame.AddrPC.Offset == frame.AddrReturn.Offset) {
+
−				buffer += seprintf(buffer, last, " <infinite loop>\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 != NULL) {
+
−		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 != NULL) {
+
−			seprintf(filename, filename_last, "%scrash.dmp", _personal_dir);
+
−			HANDLE file  = CreateFile(OTTD2FS(filename), GENERIC_WRITE, 0, NULL, 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, NULL);
+
−			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 = NULL;
+
−
+
−static LONG WINAPI ExceptionHandler(EXCEPTION_POINTERS *ep)
+
−{
+
−	if (CrashLogWindows::current != NULL) {
+
−		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(NULL, _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(NULL, _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 (_safe_esp) {
+
−#ifdef _M_AMD64
+
−		ep->ContextRecord->Rip = (DWORD64)ShowCrashlogWindow;
+
−		ep->ContextRecord->Rsp = (DWORD64)_safe_esp;
+
−#else
+
−		ep->ContextRecord->Eip = (DWORD)ShowCrashlogWindow;
+
−		ep->ContextRecord->Esp = (DWORD)_safe_esp;
+
−#endif
+
−		return EXCEPTION_CONTINUE_EXECUTION;
+
−	}
+
−
+
−	CrashLog::AfterCrashLogCleanup();
+
−	return EXCEPTION_EXECUTE_HANDLER;
+
−}
+
−
+
−static void CDECL CustomAbort(int signal)
+
−{
+
−	RaiseException(0xE1212012, 0, 0, NULL);
+
−}
+
−
+
−/* static */ void CrashLog::InitialiseCrashLog()
+
−{
+
−#if defined(_MSC_VER)
+
−#ifdef _M_AMD64
+
−	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. */
+
−	_safe_esp = (void *)(ctx.Rsp - 8);
+
−#else
+
−	_asm {
+
−		mov _safe_esp, esp
+
−	}
+
−#endif
+
−#else
+
−	asm("movl %esp, __safe_esp");
+
−#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 http://bugs.openttd.org. ")
+
−	_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) 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);
+
−	}
+
−}
+
−
+
−static INT_PTR CALLBACK CrashDialogFunc(HWND wnd, UINT msg, WPARAM wParam, LPARAM lParam)
+
−{
+
−	switch (msg) {
+
−		case WM_INITDIALOG: {
+
−#if defined(UNICODE)
+
−			/* We need to put the crash-log in a seperate buffer because the default
+
−			 * buffer in MB_TO_WIDE is not large enough (512 chars) */
+
−			wchar_t crash_msgW[lengthof(CrashLogWindows::current->crashlog)];
+
−#endif
+
−			/* 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, MB_TO_WIDE_BUFFER(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(NULL), MAKEINTRESOURCE(100), NULL, CrashDialogFunc);
+
−}