1

/* $Id$ */

     2

     3

/** @file win32.cpp Implementation of MS Windows system calls */

     4

     5

#include "stdafx.h"

     6

#include "openttd.h"

     7

#include "debug.h"

     8

#include "functions.h"

     9

#include "macros.h"

    10

#include "helpers.hpp"

    11

#include "saveload.h"

    12

#include "string.h"

    13

#include "gfx.h"

    14

#include "window.h"

    15

#include "fileio.h"

    16

#include <windows.h>

    17

#include <winnt.h>

    18

#include <wininet.h>

    19

#include <io.h>

    20

#include <fcntl.h>

    21

#include <shlobj.h> // SHGetFolderPath

    22

#include "variables.h"

    23

#include "win32.h"

    24

#include "fios.h" // opendir/readdir/closedir

    25

#include "fileio.h"

    26

#include <ctype.h>

    27

#include <tchar.h>

    28

#include <errno.h>

    29

#include <sys/types.h>

    30

#include <sys/stat.h>

    31

#include <shlobj.h>

    32

    33

static bool _has_console;

    34

    35

#if defined(__MINGW32__)

    36

	#include <stdint.h>

    37

#endif

    38

    39

static bool cursor_visible = true;

    40

    41

bool MyShowCursor(bool show)

    42

{

    43

	if (cursor_visible == show) return show;

    44

    45

	cursor_visible = show;

    46

	ShowCursor(show);

    47

    48

	return !show;

    49

}

    50

    51

/** Helper function needed by dynamically loading libraries

    52

 * XXX: Hurray for MS only having an ANSI GetProcAddress function

    53

 * on normal windows and no Wide version except for in Windows Mobile/CE */

    54

bool LoadLibraryList(Function proc[], const char *dll)

    55

{

    56

	while (*dll != '\0') {

    57

		HMODULE lib;

    58

		lib = LoadLibrary(MB_TO_WIDE(dll));

    59

    60

		if (lib == NULL) return false;

    61

		for (;;) {

    62

			FARPROC p;

    63

    64

			while (*dll++ != '\0');

    65

			if (*dll == '\0') break;

    66

#if defined(WINCE)

    67

			p = GetProcAddress(lib, MB_TO_WIDE(dll));

    68

#else

    69

			p = GetProcAddress(lib, dll);

    70

#endif

    71

			if (p == NULL) return false;

    72

			*proc++ = (Function)p;

    73

		}

    74

		dll++;

    75

	}

    76

	return true;

    77

}

    78

    79

#ifdef _MSC_VER

    80

static const char *_exception_string = NULL;

    81

#endif

    82

    83

void ShowOSErrorBox(const char *buf)

    84

{

    85

	MyShowCursor(true);

    86

	MessageBox(GetActiveWindow(), MB_TO_WIDE(buf), _T("Error!"), MB_ICONSTOP);

    87

    88

/* if exception tracker is enabled, we crash here to let the exception handler handle it. */

    89

#if defined(WIN32_EXCEPTION_TRACKER) && !defined(_DEBUG)

    90

	if (*buf == '!') {

    91

		_exception_string = buf;

    92

		*(byte*)0 = 0;

    93

	}

    94

#endif

    95

}

    96

    97

#ifdef _MSC_VER

    98

    99

static void *_safe_esp;

   100

static char *_crash_msg;

   101

static bool _expanded;

   102

static bool _did_emerg_save;

   103

static int _ident;

   104

   105

struct DebugFileInfo {

   106

	uint32 size;

   107

	uint32 crc32;

   108

	SYSTEMTIME file_time;

   109

};

   110

   111

static uint32 *_crc_table;

   112

   113

static void MakeCRCTable(uint32 *table)

   114

{

   115

	uint32 crc, poly = 0xEDB88320L;

   116

	int i;

   117

	int j;

   118

   119

	_crc_table = table;

   120

   121

	for (i = 0; i != 256; i++) {

   122

		crc = i;

   123

		for (j = 8; j != 0; j--) {

   124

			crc = (crc & 1 ? (crc >> 1) ^ poly : crc >> 1);

   125

		}

   126

		table[i] = crc;

   127

	}

   128

}

   129

   130

static uint32 CalcCRC(byte *data, uint size, uint32 crc)

   131

{

   132

	for (; size > 0; size--) {

   133

		crc = ((crc >> 8) & 0x00FFFFFF) ^ _crc_table[(crc ^ *data++) & 0xFF];

   134

	}

   135

	return crc;

   136

}

   137

   138

static void GetFileInfo(DebugFileInfo *dfi, const TCHAR *filename)

   139

{

   140

	HANDLE file;

   141

	memset(dfi, 0, sizeof(dfi));

   142

   143

	file = CreateFile(filename, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0);

   144

	if (file != INVALID_HANDLE_VALUE) {

   145

		byte buffer[1024];

   146

		DWORD numread;

   147

		uint32 filesize = 0;

   148

		FILETIME write_time;

   149

		uint32 crc = (uint32)-1;

   150

   151

		for (;;) {

   152

			if (ReadFile(file, buffer, sizeof(buffer), &numread, NULL) == 0 || numread == 0)

   153

				break;

   154

			filesize += numread;

   155

			crc = CalcCRC(buffer, numread, crc);

   156

		}

   157

		dfi->size = filesize;

   158

		dfi->crc32 = crc ^ (uint32)-1;

   159

   160

		if (GetFileTime(file, NULL, NULL, &write_time)) {

   161

			FileTimeToSystemTime(&write_time, &dfi->file_time);

   162

		}

   163

		CloseHandle(file);

   164

	}

   165

}

   166

   167

   168

static char *PrintModuleInfo(char *output, HMODULE mod)

   169

{

   170

	TCHAR buffer[MAX_PATH];

   171

	DebugFileInfo dfi;

   172

   173

	GetModuleFileName(mod, buffer, MAX_PATH);

   174

	GetFileInfo(&dfi, buffer);

   175

	output += sprintf(output, " %-20s handle: %p size: %d crc: %.8X date: %d-%.2d-%.2d %.2d:%.2d:%.2d\r\n",

   176

		WIDE_TO_MB(buffer),

   177

		mod,

   178

		dfi.size,

   179

		dfi.crc32,

   180

		dfi.file_time.wYear,

   181

		dfi.file_time.wMonth,

   182

		dfi.file_time.wDay,

   183

		dfi.file_time.wHour,

   184

		dfi.file_time.wMinute,

   185

		dfi.file_time.wSecond

   186

	);

   187

	return output;

   188

}

   189

   190

static char *PrintModuleList(char *output)

   191

{

   192

	BOOL (WINAPI *EnumProcessModules)(HANDLE, HMODULE*, DWORD, LPDWORD);

   193

   194

	if (LoadLibraryList((Function*)&EnumProcessModules, "psapi.dll\0EnumProcessModules\0\0")) {

   195

		HMODULE modules[100];

   196

		DWORD needed;

   197

		BOOL res;

   198

		int count, i;

   199

   200

		HANDLE proc = OpenProcess(PROCESS_ALL_ACCESS, FALSE, GetCurrentProcessId());

   201

		if (proc != NULL) {

   202

			res = EnumProcessModules(proc, modules, sizeof(modules), &needed);

   203

			CloseHandle(proc);

   204

			if (res) {

   205

				count = min(needed / sizeof(HMODULE), lengthof(modules));

   206

   207

				for (i = 0; i != count; i++) output = PrintModuleInfo(output, modules[i]);

   208

				return output;

   209

			}

   210

		}

   211

	}

   212

	output = PrintModuleInfo(output, NULL);

   213

	return output;

   214

}

   215

   216

static const TCHAR _crash_desc[] =

   217

	_T("A serious fault condition occured in the game. The game will shut down.\n")

   218

	_T("Please send the crash information and the crash.dmp file (if any) to the developers.\n")

   219

	_T("This will greatly help debugging. The correct place to do this is http://bugs.openttd.org. ")

   220

	_T("The information contained in the report is displayed below.\n")

   221

	_T("Press \"Emergency save\" to attempt saving the game.");

   222

   223

static const TCHAR _save_succeeded[] =

   224

	_T("Emergency save succeeded.\n")

   225

	_T("Be aware that critical parts of the internal game state may have become ")

   226

	_T("corrupted. The saved game is not guaranteed to work.");

   227

   228

static bool EmergencySave()

   229

{

   230

	SaveOrLoad("crash.sav", SL_SAVE, BASE_DIR);

   231

	return true;

   232

}

   233

   234

/* Disable the crash-save submit code as it's not used */

   235

#if 0

   236

   237

struct WinInetProcs {

   238

	HINTERNET (WINAPI *InternetOpen)(LPCTSTR,DWORD, LPCTSTR, LPCTSTR, DWORD);

   239

	HINTERNET (WINAPI *InternetConnect)(HINTERNET, LPCTSTR, INTERNET_PORT, LPCTSTR, LPCTSTR, DWORD, DWORD, DWORD);

   240

	HINTERNET (WINAPI *HttpOpenRequest)(HINTERNET, LPCTSTR, LPCTSTR, LPCTSTR, LPCTSTR, LPCTSTR *, DWORD, DWORD);

   241

	BOOL (WINAPI *HttpSendRequest)(HINTERNET, LPCTSTR, DWORD, LPVOID, DWORD);

   242

	BOOL (WINAPI *InternetCloseHandle)(HINTERNET);

   243

	BOOL (WINAPI *HttpQueryInfo)(HINTERNET, DWORD, LPVOID, LPDWORD, LPDWORD);

   244

};

   245

   246

#define M(x) x "\0"

   247

#if defined(UNICODE)

   248

# define W(x) x "W"

   249

#else

   250

# define W(x) x "A"

   251

#endif

   252

static const char wininet_files[] =

   253

	M("wininet.dll")

   254

	M(W("InternetOpen"))

   255

	M(W("InternetConnect"))

   256

	M(W("HttpOpenRequest"))

   257

	M(W("HttpSendRequest"))

   258

	M("InternetCloseHandle")

   259

	M(W("HttpQueryInfo"))

   260

	M("");

   261

#undef W

   262

#undef M

   263

   264

static WinInetProcs _wininet;

   265

   266

static const TCHAR *SubmitCrashReport(HWND wnd, void *msg, size_t msglen, const TCHAR *arg)

   267

{

   268

	HINTERNET inet, conn, http;

   269

	const TCHAR *err = NULL;

   270

	DWORD code, len;

   271

	static TCHAR buf[100];

   272

	TCHAR buff[100];

   273

   274

	if (_wininet.InternetOpen == NULL && !LoadLibraryList((Function*)&_wininet, wininet_files)) return _T("can't load wininet.dll");

   275

   276

	inet = _wininet.InternetOpen(_T("OTTD"), INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL, 0 );

   277

	if (inet == NULL) { err = _T("internetopen failed"); goto error1; }

   278

   279

	conn = _wininet.InternetConnect(inet, _T("www.openttd.org"), INTERNET_DEFAULT_HTTP_PORT, _T(""), _T(""), INTERNET_SERVICE_HTTP, 0, 0);

   280

	if (conn == NULL) { err = _T("internetconnect failed"); goto error2; }

   281

   282

	_sntprintf(buff, lengthof(buff), _T("/crash.php?file=%s&ident=%d"), arg, _ident);

   283

   284

	http = _wininet.HttpOpenRequest(conn, _T("POST"), buff, NULL, NULL, NULL, INTERNET_FLAG_NO_CACHE_WRITE , 0);

   285

	if (http == NULL) { err = _T("httpopenrequest failed"); goto error3; }

   286

   287

	if (!_wininet.HttpSendRequest(http, _T("Content-type: application/binary"), -1, msg, (DWORD)msglen)) { err = _T("httpsendrequest failed"); goto error4; }

   288

   289

	len = sizeof(code);

   290

	if (!_wininet.HttpQueryInfo(http, HTTP_QUERY_STATUS_CODE | HTTP_QUERY_FLAG_NUMBER, &code, &len, 0)) { err = _T("httpqueryinfo failed"); goto error4; }

   291

   292

	if (code != 200) {

   293

		int l = _sntprintf(buf, lengthof(buf), _T("Server said: %d "), code);

   294

		len = sizeof(buf) - l;

   295

		_wininet.HttpQueryInfo(http, HTTP_QUERY_STATUS_TEXT, buf + l, &len, 0);

   296

		err = buf;

   297

	}

   298

   299

error4:

   300

	_wininet.InternetCloseHandle(http);

   301

error3:

   302

	_wininet.InternetCloseHandle(conn);

   303

error2:

   304

	_wininet.InternetCloseHandle(inet);

   305

error1:

   306

	return err;

   307

}

   308

   309

static void SubmitFile(HWND wnd, const TCHAR *file)

   310

{

   311

	HANDLE h;

   312

	unsigned long size;

   313

	unsigned long read;

   314

	void *mem;

   315

   316

	h = CreateFile(file, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);

   317

	if (h == NULL) return;

   318

   319

	size = GetFileSize(h, NULL);

   320

	if (size > 500000) goto error1;

   321

   322

	mem = malloc(size);

   323

	if (mem == NULL) goto error1;

   324

   325

	if (!ReadFile(h, mem, size, &read, NULL) || read != size) goto error2;

   326

   327

	SubmitCrashReport(wnd, mem, size, file);

   328

   329

error2:

   330

	free(mem);

   331

error1:

   332

	CloseHandle(h);

   333

}

   334

   335

#endif /* Disabled crash-submit procedures */

   336

   337

static const TCHAR * const _expand_texts[] = {_T("S&how report >>"), _T("&Hide report <<") };

   338

   339

static void SetWndSize(HWND wnd, int mode)

   340

{

   341

	RECT r, r2;

   342

	int offs;

   343

   344

	GetWindowRect(wnd, &r);

   345

   346

	SetDlgItemText(wnd, 15, _expand_texts[mode == 1]);

   347

   348

	if (mode >= 0) {

   349

		GetWindowRect(GetDlgItem(wnd, 11), &r2);

   350

		offs = r2.bottom - r2.top + 10;

   351

		if (!mode) offs = -offs;

   352

		SetWindowPos(wnd, HWND_TOPMOST, 0, 0,

   353

			r.right - r.left, r.bottom - r.top + offs, SWP_NOMOVE | SWP_NOZORDER);

   354

	} else {

   355

		SetWindowPos(wnd, HWND_TOPMOST,

   356

			(GetSystemMetrics(SM_CXSCREEN) - (r.right - r.left)) / 2,

   357

			(GetSystemMetrics(SM_CYSCREEN) - (r.bottom - r.top)) / 2,

   358

			0, 0, SWP_NOSIZE);

   359

	}

   360

}

   361

   362

static bool DoEmergencySave(HWND wnd)

   363

{

   364

	bool b = false;

   365

   366

	EnableWindow(GetDlgItem(wnd, 13), FALSE);

   367

	_did_emerg_save = true;

   368

	__try {

   369

		b = EmergencySave();

   370

	} __except (1) {}

   371

	return b;

   372

}

   373

   374

static INT_PTR CALLBACK CrashDialogFunc(HWND wnd, UINT msg, WPARAM wParam, LPARAM lParam)

   375

{

   376

	switch (msg) {

   377

		case WM_INITDIALOG: {

   378

#if defined(UNICODE)

   379

			/* We need to put the crash-log in a seperate buffer because the default

   380

			 * buffer in MB_TO_WIDE is not large enough (512 chars) */

   381

			wchar_t crash_msgW[8096];

   382

#endif

   383

			SetDlgItemText(wnd, 10, _crash_desc);

   384

			SetDlgItemText(wnd, 11, MB_TO_WIDE_BUFFER(_crash_msg, crash_msgW, lengthof(crash_msgW)));

   385

			SendDlgItemMessage(wnd, 11, WM_SETFONT, (WPARAM)GetStockObject(ANSI_FIXED_FONT), FALSE);

   386

			SetWndSize(wnd, -1);

   387

		} return TRUE;

   388

		case WM_COMMAND:

   389

			switch (wParam) {

   390

				case 12: /* Close */

   391

					ExitProcess(0);

   392

				case 13: /* Emergency save */

   393

					if (DoEmergencySave(wnd)) {

   394

						MessageBox(wnd, _save_succeeded, _T("Save successful"), MB_ICONINFORMATION);

   395

					} else {

   396

						MessageBox(wnd, _T("Save failed"), _T("Save failed"), MB_ICONINFORMATION);

   397

					}

   398

					break;

   399

/* Disable the crash-save submit code as it's not used */

   400

#if 0

   401

				case 14: { /* Submit crash report */

   402

					const TCHAR *s;

   403

   404

					SetCursor(LoadCursor(NULL, IDC_WAIT));

   405

   406

					s = SubmitCrashReport(wnd, _crash_msg, strlen(_crash_msg), _T(""));

   407

					if (s != NULL) {

   408

						MessageBox(wnd, s, _T("Error"), MB_ICONSTOP);

   409

						break;

   410

					}

   411

   412

					// try to submit emergency savegame

   413

					if (_did_emerg_save || DoEmergencySave(wnd)) SubmitFile(wnd, _T("crash.sav"));

   414

   415

					// try to submit the autosaved game

   416

					if (_opt.autosave) {

   417

						TCHAR buf[40];

   418

						_sntprintf(buf, lengthof(buf), _T("autosave%d.sav"), (_autosave_ctr - 1) & 3);

   419

						SubmitFile(wnd, buf);

   420

					}

   421

					EnableWindow(GetDlgItem(wnd, 14), FALSE);

   422

					SetCursor(LoadCursor(NULL, IDC_ARROW));

   423

					MessageBox(wnd, _T("Crash report submitted. Thank you."), _T("Crash Report"), MB_ICONINFORMATION);

   424

				} break;

   425

#endif /* Disabled crash-submit procedures */

   426

				case 15: /* Expand window to show crash-message */

   427

					_expanded ^= 1;

   428

					SetWndSize(wnd, _expanded);

   429

					break;

   430

			}

   431

			return TRUE;

   432

		case WM_CLOSE: ExitProcess(0);

   433

	}

   434

   435

	return FALSE;

   436

}

   437

   438

static void Handler2()

   439

{

   440

	ShowCursor(TRUE);

   441

	ShowWindow(GetActiveWindow(), FALSE);

   442

	DialogBox(GetModuleHandle(NULL), MAKEINTRESOURCE(100), NULL, CrashDialogFunc);

   443

}

   444

   445

extern bool CloseConsoleLogIfActive();

   446

   447

static LONG WINAPI ExceptionHandler(EXCEPTION_POINTERS *ep)

   448

{

   449

	extern const char _openttd_revision[];

   450

	char *output;

   451

	static bool had_exception = false;

   452

   453

	if (had_exception) ExitProcess(0);

   454

	had_exception = true;

   455

   456

	_ident = GetTickCount(); // something pretty unique

   457

   458

	MakeCRCTable((uint32*)alloca(256 * sizeof(uint32)));

   459

	_crash_msg = output = (char*)LocalAlloc(LMEM_FIXED, 8192);

   460

   461

	{

   462

		SYSTEMTIME time;

   463

		GetLocalTime(&time);

   464

		output += sprintf(output,

   465

			"*** OpenTTD Crash Report ***\r\n"

   466

			"Date: %d-%.2d-%.2d %.2d:%.2d:%.2d\r\n"

   467

			"Build: %s built on " __DATE__ " " __TIME__ "\r\n",

   468

			time.wYear,

   469

			time.wMonth,

   470

			time.wDay,

   471

			time.wHour,

   472

			time.wMinute,

   473

			time.wSecond,

   474

			_openttd_revision

   475

		);

   476

	}

   477

   478

	if (_exception_string)

   479

		output += sprintf(output, "Reason: %s\r\n", _exception_string);

   480

   481

#ifdef _M_AMD64

   482

	output += sprintf(output, "Exception %.8X at %.16IX\r\n"

   483

		"Registers:\r\n"

   484

		"RAX: %.16llX RBX: %.16llX RCX: %.16llX RDX: %.16llX\r\n"

   485

		"RSI: %.16llX RDI: %.16llX RBP: %.16llX RSP: %.16llX\r\n"

   486

		"R8:  %.16llX R9:  %.16llX R10: %.16llX R11: %.16llX\r\n"

   487

		"R12: %.16llX R13: %.16llX R14: %.16llX R15: %.16llX\r\n"

   488

		"RIP: %.16llX EFLAGS: %.8X\r\n"

   489

		"\r\nBytes at CS:RIP:\r\n",

   490

		ep->ExceptionRecord->ExceptionCode,

   491

		ep->ExceptionRecord->ExceptionAddress,

   492

		ep->ContextRecord->Rax,

   493

		ep->ContextRecord->Rbx,

   494

		ep->ContextRecord->Rcx,

   495

		ep->ContextRecord->Rdx,

   496

		ep->ContextRecord->Rsi,

   497

		ep->ContextRecord->Rdi,