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crashlog_win.cpp
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1 /* $Id: crashlog_win.cpp 27380 2015-08-10 20:21:29Z michi_cc $ */
2
3 /*
4 * This file is part of OpenTTD.
5 * 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.
6 * 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.
7 * 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/>.
8 */
9
12 #include "../../stdafx.h"
13 #include "../../crashlog.h"
14 #include "win32.h"
15 #include "../../core/alloc_func.hpp"
16 #include "../../core/math_func.hpp"
17 #include "../../string_func.h"
18 #include "../../fileio_func.h"
19 #include "../../strings_func.h"
20 #include "../../gamelog.h"
21 #include "../../saveload/saveload.h"
22 #include "../../video/video_driver.hpp"
23
24 #include <windows.h>
25 #include <signal.h>
26
27 #include "../../safeguards.h"
28
29 static const uint MAX_SYMBOL_LEN = 512;
30 static const uint MAX_FRAMES = 64;
31
32 /* printf format specification for 32/64-bit addresses. */
33 #ifdef _M_AMD64
34 #define PRINTF_PTR "0x%016IX"
35 #else
36 #define PRINTF_PTR "0x%08X"
37 #endif
38
42 class CrashLogWindows : public CrashLog {
44 EXCEPTION_POINTERS *ep;
45
46 /* virtual */ char *LogOSVersion(char *buffer, const char *last) const;
47 /* virtual */ char *LogError(char *buffer, const char *last, const char *message) const;
48 /* virtual */ char *LogStacktrace(char *buffer, const char *last) const;
49 /* virtual */ char *LogRegisters(char *buffer, const char *last) const;
50 /* virtual */ char *LogModules(char *buffer, const char *last) const;
51 public:
52 #if defined(_MSC_VER)
53 /* virtual */ int WriteCrashDump(char *filename, const char *filename_last) const;
54 char *AppendDecodedStacktrace(char *buffer, const char *last) const;
55 #else
56 char *AppendDecodedStacktrace(char *buffer, const char *last) const { return buffer; }
57 #endif /* _MSC_VER */
58
60 char crashlog[65536];
62 char crashlog_filename[MAX_PATH];
64 char crashdump_filename[MAX_PATH];
66 char screenshot_filename[MAX_PATH];
67
72 CrashLogWindows(EXCEPTION_POINTERS *ep = NULL) :
73 ep(ep)
74 {
75 this->crashlog[0] = '\0';
76 this->crashlog_filename[0] = '\0';
77 this->crashdump_filename[0] = '\0';
78 this->screenshot_filename[0] = '\0';
79 }
80
84 static CrashLogWindows *current;
85 };
86
87 /* static */ CrashLogWindows *CrashLogWindows::current = NULL;
88
89 /* virtual */ char *CrashLogWindows::LogOSVersion(char *buffer, const char *last) const
90 {
91 _OSVERSIONINFOA os;
92 os.dwOSVersionInfoSize = sizeof(os);
93 GetVersionExA(&os);
94
95 return buffer + seprintf(buffer, last,
96 "Operating system:\n"
97 " Name: Windows\n"
98 " Release: %d.%d.%d (%s)\n",
99 (int)os.dwMajorVersion,
100 (int)os.dwMinorVersion,
101 (int)os.dwBuildNumber,
102 os.szCSDVersion
103 );
104
105 }
106
107 /* virtual */ char *CrashLogWindows::LogError(char *buffer, const char *last, const char *message) const
108 {
109 return buffer + seprintf(buffer, last,
110 "Crash reason:\n"
111 " Exception: %.8X\n"
112 #ifdef _M_AMD64
113 " Location: %.16IX\n"
114 #else
115 " Location: %.8X\n"
116 #endif
117 " Message: %s\n\n",
118 (int)ep->ExceptionRecord->ExceptionCode,
119 (size_t)ep->ExceptionRecord->ExceptionAddress,
120 message == NULL ? "<none>" : message
121 );
122 }
123
124 struct DebugFileInfo {
125 uint32 size;
126 uint32 crc32;
127 SYSTEMTIME file_time;
128 };
129
130 static uint32 *_crc_table;
131
132 static void MakeCRCTable(uint32 *table)
133 {
134 uint32 crc, poly = 0xEDB88320L;
135 int i;
136 int j;
137
138 _crc_table = table;
139
140 for (i = 0; i != 256; i++) {
141 crc = i;
142 for (j = 8; j != 0; j--) {
143 crc = (crc & 1 ? (crc >> 1) ^ poly : crc >> 1);
144 }
145 table[i] = crc;
146 }
147 }
148
149 static uint32 CalcCRC(byte *data, uint size, uint32 crc)
150 {
151 for (; size > 0; size--) {
152 crc = ((crc >> 8) & 0x00FFFFFF) ^ _crc_table[(crc ^ *data++) & 0xFF];
153 }
154 return crc;
155 }
156
157 static void GetFileInfo(DebugFileInfo *dfi, const TCHAR *filename)
158 {
159 HANDLE file;
160 memset(dfi, 0, sizeof(*dfi));
161
162 file = CreateFile(filename, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0);
163 if (file != INVALID_HANDLE_VALUE) {
164 byte buffer[1024];
165 DWORD numread;
166 uint32 filesize = 0;
167 FILETIME write_time;
168 uint32 crc = (uint32)-1;
169
170 for (;;) {
171 if (ReadFile(file, buffer, sizeof(buffer), &numread, NULL) == 0 || numread == 0) {
172 break;
173 }
174 filesize += numread;
175 crc = CalcCRC(buffer, numread, crc);
176 }
177 dfi->size = filesize;
178 dfi->crc32 = crc ^ (uint32)-1;
179
180 if (GetFileTime(file, NULL, NULL, &write_time)) {
181 FileTimeToSystemTime(&write_time, &dfi->file_time);
182 }
183 CloseHandle(file);
184 }
185 }
186
187
188 static char *PrintModuleInfo(char *output, const char *last, HMODULE mod)
189 {
190 TCHAR buffer[MAX_PATH];
191 DebugFileInfo dfi;
192
193 GetModuleFileName(mod, buffer, MAX_PATH);
194 GetFileInfo(&dfi, buffer);
195 output += seprintf(output, last, " %-20s handle: %p size: %d crc: %.8X date: %d-%.2d-%.2d %.2d:%.2d:%.2d\n",
196 FS2OTTD(buffer),
197 mod,
198 dfi.size,
199 dfi.crc32,
200 dfi.file_time.wYear,
201 dfi.file_time.wMonth,
202 dfi.file_time.wDay,
203 dfi.file_time.wHour,
204 dfi.file_time.wMinute,
205 dfi.file_time.wSecond
206 );
207 return output;
208 }
209
210 /* virtual */ char *CrashLogWindows::LogModules(char *output, const char *last) const
211 {
212 MakeCRCTable(AllocaM(uint32, 256));
213 BOOL (WINAPI *EnumProcessModules)(HANDLE, HMODULE*, DWORD, LPDWORD);
214
215 output += seprintf(output, last, "Module information:\n");
216
217 if (LoadLibraryList((Function*)&EnumProcessModules, "psapi.dll\0EnumProcessModules\0\0")) {
218 HMODULE modules[100];
219 DWORD needed;
220 BOOL res;
221
222 HANDLE proc = OpenProcess(PROCESS_ALL_ACCESS, FALSE, GetCurrentProcessId());
223 if (proc != NULL) {
224 res = EnumProcessModules(proc, modules, sizeof(modules), &needed);
225 CloseHandle(proc);
226 if (res) {
227 size_t count = min(needed / sizeof(HMODULE), lengthof(modules));
228
229 for (size_t i = 0; i != count; i++) output = PrintModuleInfo(output, last, modules[i]);
230 return output + seprintf(output, last, "\n");
231 }
232 }
233 }
234 output = PrintModuleInfo(output, last, NULL);
235 return output + seprintf(output, last, "\n");
236 }
237
238 /* virtual */ char *CrashLogWindows::LogRegisters(char *buffer, const char *last) const
239 {
240 buffer += seprintf(buffer, last, "Registers:\n");
241 #ifdef _M_AMD64
242 buffer += seprintf(buffer, last,
243 " RAX: %.16I64X RBX: %.16I64X RCX: %.16I64X RDX: %.16I64X\n"
244 " RSI: %.16I64X RDI: %.16I64X RBP: %.16I64X RSP: %.16I64X\n"
245 " R8: %.16I64X R9: %.16I64X R10: %.16I64X R11: %.16I64X\n"
246 " R12: %.16I64X R13: %.16I64X R14: %.16I64X R15: %.16I64X\n"
247 " RIP: %.16I64X EFLAGS: %.8lX\n",
248 ep->ContextRecord->Rax,
249 ep->ContextRecord->Rbx,
250 ep->ContextRecord->Rcx,
251 ep->ContextRecord->Rdx,
252 ep->ContextRecord->Rsi,
253 ep->ContextRecord->Rdi,
254 ep->ContextRecord->Rbp,
255 ep->ContextRecord->Rsp,
256 ep->ContextRecord->R8,
257 ep->ContextRecord->R9,
258 ep->ContextRecord->R10,
259 ep->ContextRecord->R11,
260 ep->ContextRecord->R12,
261 ep->ContextRecord->R13,
262 ep->ContextRecord->R14,
263 ep->ContextRecord->R15,
264 ep->ContextRecord->Rip,
265 ep->ContextRecord->EFlags
266 );
267 #else
268 buffer += seprintf(buffer, last,
269 " EAX: %.8X EBX: %.8X ECX: %.8X EDX: %.8X\n"
270 " ESI: %.8X EDI: %.8X EBP: %.8X ESP: %.8X\n"
271 " EIP: %.8X EFLAGS: %.8X\n",
272 (int)ep->ContextRecord->Eax,
273 (int)ep->ContextRecord->Ebx,
274 (int)ep->ContextRecord->Ecx,
275 (int)ep->ContextRecord->Edx,
276 (int)ep->ContextRecord->Esi,
277 (int)ep->ContextRecord->Edi,
278 (int)ep->ContextRecord->Ebp,
279 (int)ep->ContextRecord->Esp,
280 (int)ep->ContextRecord->Eip,
281 (int)ep->ContextRecord->EFlags
282 );
283 #endif
284
285 buffer += seprintf(buffer, last, "\n Bytes at instruction pointer:\n");
286 #ifdef _M_AMD64
287 byte *b = (byte*)ep->ContextRecord->Rip;
288 #else
289 byte *b = (byte*)ep->ContextRecord->Eip;
290 #endif
291 for (int i = 0; i != 24; i++) {
292 if (IsBadReadPtr(b, 1)) {
293 buffer += seprintf(buffer, last, " ??"); // OCR: WAS: , 0);
294 } else {
295 buffer += seprintf(buffer, last, " %.2X", *b);
296 }
297 b++;
298 }
299 return buffer + seprintf(buffer, last, "\n\n");
300 }
301
302 /* virtual */ char *CrashLogWindows::LogStacktrace(char *buffer, const char *last) const
303 {
304 buffer += seprintf(buffer, last, "Stack trace:\n");
305 #ifdef _M_AMD64
306 uint32 *b = (uint32*)ep->ContextRecord->Rsp;
307 #else
308 uint32 *b = (uint32*)ep->ContextRecord->Esp;
309 #endif
310 for (int j = 0; j != 24; j++) {
311 for (int i = 0; i != 8; i++) {
312 if (IsBadReadPtr(b, sizeof(uint32))) {
313 buffer += seprintf(buffer, last, " ????????"); // OCR: WAS - , 0);
314 } else {
315 buffer += seprintf(buffer, last, " %.8X", *b);
316 }
317 b++;
318 }
319 buffer += seprintf(buffer, last, "\n");
320 }
321 return buffer + seprintf(buffer, last, "\n");
322 }
323
324 #if defined(_MSC_VER)
325 #pragma warning(disable:4091)
326 #include <dbghelp.h>
327 #pragma warning(default:4091)
328
329 char *CrashLogWindows::AppendDecodedStacktrace(char *buffer, const char *last) const
330 {
331 #define M(x) x "\0"
332 static const char dbg_import[] =
333 M("dbghelp.dll")
334 M("SymInitialize")
335 M("SymSetOptions")
336 M("SymCleanup")
337 M("StackWalk64")
338 M("SymFunctionTableAccess64")
339 M("SymGetModuleBase64")
340 M("SymGetModuleInfo64")
341 M("SymGetSymFromAddr64")
342 M("SymGetLineFromAddr64")
343 M("")
344 ;
345 #undef M
346
347 struct ProcPtrs {
348 BOOL (WINAPI * pSymInitialize)(HANDLE, PCSTR, BOOL);
349 BOOL (WINAPI * pSymSetOptions)(DWORD);
350 BOOL (WINAPI * pSymCleanup)(HANDLE);
351 BOOL (WINAPI * pStackWalk64)(DWORD, HANDLE, HANDLE, LPSTACKFRAME64, PVOID, PREAD_PROCESS_MEMORY_ROUTINE64, PFUNCTION_TABLE_ACCESS_ROUTINE64, PGET_MODULE_BASE_ROUTINE64, PTRANSLATE_ADDRESS_ROUTINE64);
352 PVOID (WINAPI * pSymFunctionTableAccess64)(HANDLE, DWORD64);
353 DWORD64 (WINAPI * pSymGetModuleBase64)(HANDLE, DWORD64);
354 BOOL (WINAPI * pSymGetModuleInfo64)(HANDLE, DWORD64, PIMAGEHLP_MODULE64);
355 BOOL (WINAPI * pSymGetSymFromAddr64)(HANDLE, DWORD64, PDWORD64, PIMAGEHLP_SYMBOL64);
356 BOOL (WINAPI * pSymGetLineFromAddr64)(HANDLE, DWORD64, PDWORD, PIMAGEHLP_LINE64);
357 } proc;
358
359 buffer += seprintf(buffer, last, "\nDecoded stack trace:\n");
360
361 /* Try to load the functions from the DLL, if that fails because of a too old dbghelp.dll, just skip it. */
362 if (LoadLibraryList((Function*)&proc, dbg_import)) {
363 /* Initialize symbol handler. */
364 HANDLE hCur = GetCurrentProcess();
365 proc.pSymInitialize(hCur, NULL, TRUE);
366 /* Load symbols only when needed, fail silently on errors, demangle symbol names. */
367 proc.pSymSetOptions(SYMOPT_DEFERRED_LOADS | SYMOPT_FAIL_CRITICAL_ERRORS | SYMOPT_UNDNAME);
368
369 /* Initialize starting stack frame from context record. */
370 STACKFRAME64 frame;
371 memset(&frame, 0, sizeof(frame));
372 #ifdef _M_AMD64
373 frame.AddrPC.Offset = ep->ContextRecord->Rip;
374 frame.AddrFrame.Offset = ep->ContextRecord->Rbp;
375 frame.AddrStack.Offset = ep->ContextRecord->Rsp;
376 #else
377 frame.AddrPC.Offset = ep->ContextRecord->Eip;
378 frame.AddrFrame.Offset = ep->ContextRecord->Ebp;
379 frame.AddrStack.Offset = ep->ContextRecord->Esp;
380 #endif
381 frame.AddrPC.Mode = AddrModeFlat;
382 frame.AddrFrame.Mode = AddrModeFlat;
383 frame.AddrStack.Mode = AddrModeFlat;
384
385 /* Copy context record as StackWalk64 may modify it. */
386 CONTEXT ctx;
387 memcpy(&ctx, ep->ContextRecord, sizeof(ctx));
388
389 /* Allocate space for symbol info. */
390 IMAGEHLP_SYMBOL64 *sym_info = (IMAGEHLP_SYMBOL64*)alloca(sizeof(IMAGEHLP_SYMBOL64) + MAX_SYMBOL_LEN - 1);
391 sym_info->SizeOfStruct = sizeof(IMAGEHLP_SYMBOL64);
392 sym_info->MaxNameLength = MAX_SYMBOL_LEN;
393
394 /* Walk stack at most MAX_FRAMES deep in case the stack is corrupt. */
395 for (uint num = 0; num < MAX_FRAMES; num++) {
396 if (!proc.pStackWalk64(
397 #ifdef _M_AMD64
398 IMAGE_FILE_MACHINE_AMD64,
399 #else
400 IMAGE_FILE_MACHINE_I386,
401 #endif
402 hCur, GetCurrentThread(), &frame, &ctx, NULL, proc.pSymFunctionTableAccess64, proc.pSymGetModuleBase64, NULL)) break;
403
404 if (frame.AddrPC.Offset == frame.AddrReturn.Offset) {
405 buffer += seprintf(buffer, last, " <infinite loop>\n");
406 break;
407 }
408
409 /* Get module name. */
410 const char *mod_name = "???";
411
412 IMAGEHLP_MODULE64 module;
413 module.SizeOfStruct = sizeof(module);
414 if (proc.pSymGetModuleInfo64(hCur, frame.AddrPC.Offset, &module)) {
415 mod_name = module.ModuleName;
416 }
417
418 /* Print module and instruction pointer. */
419 buffer += seprintf(buffer, last, "[%02d] %-20s " PRINTF_PTR, num, mod_name, frame.AddrPC.Offset);
420
421 /* Get symbol name and line info if possible. */
422 DWORD64 offset;
423 if (proc.pSymGetSymFromAddr64(hCur, frame.AddrPC.Offset, &offset, sym_info)) {
424 buffer += seprintf(buffer, last, " %s + %I64u", sym_info->Name, offset);
425
426 DWORD line_offs;
427 IMAGEHLP_LINE64 line;
428 line.SizeOfStruct = sizeof(IMAGEHLP_LINE64);
429 if (proc.pSymGetLineFromAddr64(hCur, frame.AddrPC.Offset, &line_offs, &line)) {
430 buffer += seprintf(buffer, last, " (%s:%d)", line.FileName, line.LineNumber);
431 }
432 }
433 buffer += seprintf(buffer, last, "\n");
434 }
435
436 proc.pSymCleanup(hCur);
437 }
438
439 return buffer + seprintf(buffer, last, "\n*** End of additional info ***\n");
440 }
441
442 /* virtual */ int CrashLogWindows::WriteCrashDump(char *filename, const char *filename_last) const
443 {
444 int ret = 0;
445 HMODULE dbghelp = LoadLibrary(_T("dbghelp.dll"));
446 if (dbghelp != NULL) {
447 typedef BOOL (WINAPI *MiniDumpWriteDump_t)(HANDLE, DWORD, HANDLE,
448 MINIDUMP_TYPE,
449 CONST PMINIDUMP_EXCEPTION_INFORMATION,
450 CONST PMINIDUMP_USER_STREAM_INFORMATION,
451 CONST PMINIDUMP_CALLBACK_INFORMATION);
452 MiniDumpWriteDump_t funcMiniDumpWriteDump = (MiniDumpWriteDump_t)GetProcAddress(dbghelp, "MiniDumpWriteDump");
453 if (funcMiniDumpWriteDump != NULL) {
454 seprintf(filename, filename_last, "%scrash.dmp", _personal_dir);
455 HANDLE file = CreateFile(OTTD2FS(filename), GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, 0, 0);
456 HANDLE proc = GetCurrentProcess();
457 DWORD procid = GetCurrentProcessId();
458 MINIDUMP_EXCEPTION_INFORMATION mdei;
459 MINIDUMP_USER_STREAM userstream;
460 MINIDUMP_USER_STREAM_INFORMATION musi;
461
462 userstream.Type = LastReservedStream + 1;
463 userstream.Buffer = (void*)this->crashlog;
464 userstream.BufferSize = (ULONG)strlen(this->crashlog) + 1;
465
466 musi.UserStreamCount = 1;
467 musi.UserStreamArray = &userstream;
468
469 mdei.ThreadId = GetCurrentThreadId();
470 mdei.ExceptionPointers = ep;
471 mdei.ClientPointers = false;
472
473 funcMiniDumpWriteDump(proc, procid, file, MiniDumpWithDataSegs, &mdei, &musi, NULL);
474 ret = 1;
475 } else {
476 ret = -1;
477 }
478 FreeLibrary(dbghelp);
479 }
480 return ret;
481 }
482 #endif /* _MSC_VER */
483
484 extern bool CloseConsoleLogIfActive();
485 static void ShowCrashlogWindow();
486
491 void *_safe_esp = NULL;
492
493 static LONG WINAPI ExceptionHandler(EXCEPTION_POINTERS *ep)
494 {
495 if (CrashLogWindows::current != NULL) {
496 CrashLog::AfterCrashLogCleanup();
497 ExitProcess(2);
498 }
499
500 if (GamelogTestEmergency()) {
501 static const TCHAR _emergency_crash[] =
502 _T("A serious fault condition occurred in the game. The game will shut down.\n")
503 _T("As you loaded an emergency savegame no crash information will be generated.\n");
504 MessageBox(NULL, _emergency_crash, _T("Fatal Application Failure"), MB_ICONERROR);
505 ExitProcess(3);
506 }
507
508 if (SaveloadCrashWithMissingNewGRFs()) {
509 static const TCHAR _saveload_crash[] =
510 _T("A serious fault condition occurred in the game. The game will shut down.\n")
511 _T("As you loaded an savegame for which you do not have the required NewGRFs\n")
512 _T("no crash information will be generated.\n");
513 MessageBox(NULL, _saveload_crash, _T("Fatal Application Failure"), MB_ICONERROR);
514 ExitProcess(3);
515 }
516
517 CrashLogWindows *log = new CrashLogWindows(ep);
518 CrashLogWindows::current = log;
519 char *buf = log->FillCrashLog(log->crashlog, lastof(log->crashlog));
520 log->WriteCrashDump(log->crashdump_filename, lastof(log->crashdump_filename));
521 log->AppendDecodedStacktrace(buf, lastof(log->crashlog));
522 log->WriteCrashLog(log->crashlog, log->crashlog_filename, lastof(log->crashlog_filename));
523 log->WriteScreenshot(log->screenshot_filename, lastof(log->screenshot_filename));
524
525 /* Close any possible log files */
526 CloseConsoleLogIfActive();
527
528 if ((VideoDriver::GetInstance() == NULL || VideoDriver::GetInstance()->HasGUI()) && _safe_esp != NULL) {
529 #ifdef _M_AMD64
530 ep->ContextRecord->Rip = (DWORD64)ShowCrashlogWindow;
531 ep->ContextRecord->Rsp = (DWORD64)_safe_esp;
532 #else
533 ep->ContextRecord->Eip = (DWORD)ShowCrashlogWindow;
534 ep->ContextRecord->Esp = (DWORD)_safe_esp;
535 #endif
536 return EXCEPTION_CONTINUE_EXECUTION;
537 }
538
539 CrashLog::AfterCrashLogCleanup();
540 return EXCEPTION_EXECUTE_HANDLER;
541 }
542
543 static void CDECL CustomAbort(int signal)
544 {
545 RaiseException(0xE1212012, 0, 0, NULL);
546 }
547
548 /* static */ void CrashLog::InitialiseCrashLog()
549 {
550 #ifdef _M_AMD64
551 CONTEXT ctx;
552 RtlCaptureContext(&ctx);
553
554 /* The stack pointer for AMD64 must always be 16-byte aligned inside a
555 * function. As we are simulating a function call with the safe ESP value,
556 * we need to subtract 8 for the imaginary return address otherwise stack
557 * alignment would be wrong in the called function. */
558 _safe_esp = (void *)(ctx.Rsp - 8);
559 #else
560 #if defined(_MSC_VER)
561 _asm {
562 mov _safe_esp, esp
563 }
564 #else
565 asm("movl %esp, __safe_esp");
566 #endif
567 #endif
568
569 /* SIGABRT is not an unhandled exception, so we need to intercept it. */
570 signal(SIGABRT, CustomAbort);
571 #if defined(_MSC_VER)
572 /* Don't show abort message as we will get the crashlog window anyway. */
573 _set_abort_behavior(0, _WRITE_ABORT_MSG);
574 #endif
575 SetUnhandledExceptionFilter(ExceptionHandler);
576 }
577
578 /* The crash log GUI */
579
580 static bool _expanded;
581
582 static const TCHAR _crash_desc[] =
583 _T("A serious fault condition occurred in the game. The game will shut down.\n")
584 _T("Please send the crash information and the crash.dmp file (if any) to the developers.\n")
585 _T("This will greatly help debugging. The correct place to do this is http://bugs.openttd.org. ")
586 _T("The information contained in the report is displayed below.\n")
587 _T("Press \"Emergency save\" to attempt saving the game. Generated file(s):\n")
588 _T("%s");
589
590 static const TCHAR _save_succeeded[] =
591 _T("Emergency save succeeded.\nIts location is '%s'.\n")
592 _T("Be aware that critical parts of the internal game state may have become ")
593 _T("corrupted. The saved game is not guaranteed to work.");
594
595 static const TCHAR * const _expand_texts[] = {_T("S&how report >>"), _T("&Hide report <<") };
596
597 static void SetWndSize(HWND wnd, int mode)
598 {
599 RECT r, r2;
600
601 GetWindowRect(wnd, &r);
602 SetDlgItemText(wnd, 15, _expand_texts[mode == 1]);
603
604 if (mode >= 0) {
605 GetWindowRect(GetDlgItem(wnd, 11), &r2);
606 int offs = r2.bottom - r2.top + 10;
607 if (mode == 0) offs = -offs;
608 SetWindowPos(wnd, HWND_TOPMOST, 0, 0,
609 r.right - r.left, r.bottom - r.top + offs, SWP_NOMOVE | SWP_NOZORDER);
610 } else {
611 SetWindowPos(wnd, HWND_TOPMOST,
612 (GetSystemMetrics(SM_CXSCREEN) - (r.right - r.left)) / 2,
613 (GetSystemMetrics(SM_CYSCREEN) - (r.bottom - r.top)) / 2,
614 0, 0, SWP_NOSIZE);
615 }
616 }
617
618 /* When TCHAR is char, then _sntprintf becomes snprintf. When TCHAR is wchar it doesn't. Likewise for strcat. */
619 #undef snprintf
620 #undef strcat
621
622 static INT_PTR CALLBACK CrashDialogFunc(HWND wnd, UINT msg, WPARAM wParam, LPARAM lParam)
623 {
624 switch (msg) {
625 case WM_INITDIALOG: {
626 /* We need to put the crash-log in a separate buffer because the default
627 * buffer in MB_TO_WIDE is not large enough (512 chars) */
628 TCHAR crash_msgW[lengthof(CrashLogWindows::current->crashlog)];
629 /* Convert unix -> dos newlines because the edit box only supports that properly :( */
630 const char *unix_nl = CrashLogWindows::current->crashlog;
631 char dos_nl[lengthof(CrashLogWindows::current->crashlog)];
632 char *p = dos_nl;
633 WChar c;
634 while ((c = Utf8Consume(&unix_nl)) && p < lastof(dos_nl) - 4) { // 4 is max number of bytes per character
635 if (c == '\n') p += Utf8Encode(p, '\r');
636 p += Utf8Encode(p, c);
637 }
638 *p = '\0';
639
640 /* Add path to crash.log and crash.dmp (if any) to the crash window text */
641 size_t len = _tcslen(_crash_desc) + 2;
642 len += _tcslen(OTTD2FS(CrashLogWindows::current->crashlog_filename)) + 2;
643 len += _tcslen(OTTD2FS(CrashLogWindows::current->crashdump_filename)) + 2;
644 len += _tcslen(OTTD2FS(CrashLogWindows::current->screenshot_filename)) + 1;
645
646 TCHAR *text = AllocaM(TCHAR, len);
647 _sntprintf(text, len, _crash_desc, OTTD2FS(CrashLogWindows::current->crashlog_filename));
648 if (OTTD2FS(CrashLogWindows::current->crashdump_filename)[0] != _T('\0')) {
649 _tcscat(text, _T("\n"));
650 _tcscat(text, OTTD2FS(CrashLogWindows::current->crashdump_filename));
651 }
652 if (OTTD2FS(CrashLogWindows::current->screenshot_filename)[0] != _T('\0')) {
653 _tcscat(text, _T("\n"));
654 _tcscat(text, OTTD2FS(CrashLogWindows::current->screenshot_filename));
655 }
656
657 SetDlgItemText(wnd, 10, text);
658 SetDlgItemText(wnd, 11, convert_to_fs(dos_nl, crash_msgW, lengthof(crash_msgW)));
659 SendDlgItemMessage(wnd, 11, WM_SETFONT, (WPARAM)GetStockObject(ANSI_FIXED_FONT), FALSE);
660 SetWndSize(wnd, -1);
661 } return TRUE;
662 case WM_COMMAND:
663 switch (wParam) {
664 case 12: // Close
665 CrashLog::AfterCrashLogCleanup();
666 ExitProcess(2);
667 case 13: // Emergency save
668 char filename[MAX_PATH];
669 if (CrashLogWindows::current->WriteSavegame(filename, lastof(filename))) {
670 size_t len = _tcslen(_save_succeeded) + _tcslen(OTTD2FS(filename)) + 1;
671 TCHAR *text = AllocaM(TCHAR, len);
672 _sntprintf(text, len, _save_succeeded, OTTD2FS(filename));
673 MessageBox(wnd, text, _T("Save successful"), MB_ICONINFORMATION);
674 } else {
675 MessageBox(wnd, _T("Save failed"), _T("Save failed"), MB_ICONINFORMATION);
676 }
677 break;
678 case 15: // Expand window to show crash-message
679 _expanded ^= 1;
680 SetWndSize(wnd, _expanded);
681 break;
682 }
683 return TRUE;
684 case WM_CLOSE:
685 CrashLog::AfterCrashLogCleanup();
686 ExitProcess(2);
687 }
688
689 return FALSE;
690 }
691
692 static void ShowCrashlogWindow()
693 {
694 ShowCursor(TRUE);
695 ShowWindow(GetActiveWindow(), FALSE);
696 DialogBox(GetModuleHandle(NULL), MAKEINTRESOURCE(100), NULL, CrashDialogFunc);
697 }